Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Sat Sep 18 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Odette, located a few hundred miles southeast of Nantucket, Massachusetts. 1. Showers and thunderstorms associated with an area of low pressure located about 650 miles east-southeast of the northern Leeward Islands continue to show signs of organization. However, satellite-derived wind data from a few hours ago indicated that the system does not yet have a well-defined surface circulation. Only a slight increase in organization of this system would lead to the formation of a tropical depression or tropical storm, which is expected to occur later today or tonight while the low moves toward the west-northwest at about 15 mph. This system is expected to be near the northern Leeward Islands on Monday and Tuesday, and interests there should monitor its progress. Upper-level winds are likely to become less conducive for development when the system reaches the southwestern Atlantic by the early to middle part of next week. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. 2. A low pressure system located over the far eastern Atlantic a few hundred miles south-southwest of the Cabo Verde Islands continues to show some signs of organization. Environmental conditions appear conducive for further development of this system, and a tropical depression could form over the next couple of days while moving toward the northwest at 10 to 15 mph to the west of the Cabo Verde Islands. This system is expected to reach cooler waters and an area of stronger upper-level winds early next week, which could limit its development. * Formation chance through 48 hours...medium...50 percent. * Formation chance through 5 days...medium...50 percent. Public Advisories on Tropical Storm Odette are issued under WMO header WTNT35 KNHC and under AWIPS header MIATCPAT5. Forecast/Advisories on Tropical Storm Odette are issued under WMO header WTNT25 KNHC and under AWIPS header MIATCMAT5. High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
Category Archives: Weather
Tropical Outlook 9/18
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Sat Sep 18 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Odette, located a couple of hundred miles south-southeast of Nantucket, Massachusetts. 1. Showers and thunderstorms continue to become better organized in association with an area of low pressure located about 650 miles miles east-southeast of the northern Leeward Islands. Environmental conditions are expected to be conducive for further development during the next day or two, and a tropical depression or tropical storm is expected to form later today or tonight while the system moves toward the west-northwest at about 15 mph. This system is expected to be near the northern Leeward Islands on Monday and Tuesday, and interests there should monitor its progress. Upper-level winds are likely to become less conducive for development when the system reaches the southwestern Atlantic by the early to middle part of next week. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. 2. A broad area of low pressure is located over the far eastern Atlantic a few hundred miles south of the Cabo Verde Islands. The associated shower and thunderstorm activity has become a little better organized since yesterday, and environmental conditions appear conducive for further development during the next couple of days. A tropical depression could form while the system moves northwestward at about 10 mph to the west of the Cabo Verde Islands before it reaches cooler waters and stronger upper-level winds early next week. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...medium...40 percent. Public Advisories on Tropical Storm Odette are issued under WMO header WTNT35 KNHC and under AWIPS header MIATCPAT5. Forecast/Advisories on Tropical Storm Odette are issued under WMO header WTNT25 KNHC and under AWIPS header MIATCMAT5. High Seas Forecasts issued by the National Weather Service can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
T.S. Odette Advisory #1
BULLETIN Tropical Storm Odette Advisory Number 1 NWS National Hurricane Center Miami FL AL152021 500 PM EDT Fri Sep 17 2021 ...TROPICAL STORM ODETTE FORMS OFF THE U.S. MID-ATLANTIC COAST... ...FORECAST TO BECOME POST-TROPICAL BY SATURDAY NIGHT SOUTH OF ATLANTIC CANADA... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...36.7N 71.8W ABOUT 225 MI...365 KM SE OF CAPE MAY NEW JERSEY ABOUT 325 MI...525 KM SSW OF NANTUCKET MASSACHUSETTS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NE OR 45 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Please refer to products issued by Environment Canada for Odette's potential impacts to Newfoundland as a post-tropical cyclone. DISCUSSION AND OUTLOOK ---------------------- At 500 PM EDT (2100 UTC), the center of Tropical Storm Odette was located near latitude 36.7 North, longitude 71.8 West. Odette is moving toward the northeast near 15 mph (24 km/h), and this general motion is expected to continue into tonight. A turn toward the east-northeast with an increase in forward speed is expected to begin on Saturday and continue through Monday. On the forecast track, the center of Odette will move away from the U.S. Mid-Atlantic coast and pass south of Atlantic Canada over the weekend. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Strengthening is forecast during the next couple of days, and Odette is expected to become a strong post-tropical low by Saturday night. Tropical-storm-force winds extend outward up to 115 miles (185 km) to the north of the center. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Odette are affecting portions of the United States Mid-Atlantic coast and are expected to spread northward to portions of the U.S. Northeast and Atlantic Canada coasts during the weekend. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.
Tropical Outlook 9/17
Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 AM EDT Fri Sep 17 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The Weather Prediction Center is issuing advisories on Post-Tropical Cyclone Nicholas, located over Louisiana. 1. Showers and thunderstorms remain disorganized in association with a tropical wave and broad area of low pressure located about 1100 miles west-southwest of the Cabo Verde Islands. However, environmental conditions are expected to be conducive for development during the next few days, and a tropical depression could still form over the weekend. This system is expected to move westward to west-northwestward at 15 to 20 mph across the tropical Atlantic during the next several days. * Formation chance through 48 hours...medium...60 percent. * Formation chance through 5 days...high...70 percent. 2. A broad area of low pressure is located about 100 miles southeast of the Outer Banks of North Carolina. Although the circulation of this system has become a little better defined since yesterday, the associated showers and thunderstorms remain disorganized and located mainly well to the east of the center. Environmental conditions are becoming more conducive for development, and a tropical depression is likely to form during the next day or so while the system moves northward to north-northeastward off the southeast and mid-Atlantic U.S. coasts. Regardless of development, this system could bring high surf to portions of the southeast and mid-Atlantic U.S. coasts through this weekend. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the NOAA Ocean Prediction Center. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...70 percent. 3. Disorganized cloudiness and thunderstorms over the far eastern tropical Atlantic are associated with a tropical wave located a few hundred miles southeast of the Cabo Verde Islands. Environmental conditions are forecast to be only marginally conducive, and development, if any, of this system should be slow to occur over the next few days while the system moves west-northwestward to northwestward over the far eastern Atlantic. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...20 percent. Public advisories issued by the Weather Prediction Center on Post-Tropical Cyclone Nicholas can be found under AWIPS header TCPAT4, WMO header WTNT34 KWNH, and on the web at https://www.wpc.ncep.noaa.gov or hurricanes.gov High Seas Forecasts for the system off the Outer Banks of North Carolina issued by the NOAA Ocean Prediction Center can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
Tropical Outlook 9/16
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Thu Sep 16 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The Weather Prediction Center is issuing advisories on Post-Tropical Cyclone Nicholas, located near the central coast of Louisiana. 1. Showers and thunderstorms have become slightly less organized in association with a tropical wave located a little more than 800 miles west-southwest of the Cabo Verde Islands. However, environmental conditions are expected to be conducive for development during the next few days, and a tropical depression is still likely to form late this week or this weekend. This system is expected to move westward to west-northwestward across the tropical Atlantic during the next several days. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...80 percent. 2. Shower and thunderstorm activity has increased this morning over the eastern portion of a broad area of low pressure located about 250 miles south-southeast of the Outer Banks of North Carolina. Environmental conditions are expected to become more conducive for development, and a tropical depression is still likely to form during the next day or two while the system moves northward to north-northeastward off the southeast and mid-Atlantic U.S. coasts. Regardless of development, this system could bring high surf to portions of the southeast and mid-Atlantic U.S. coasts later this week and this weekend. Additional information on this system, including gale warnings, can be found in High Seas Forecasts issued by the NOAA Ocean Prediction Center. An Air Force Reserve reconnaissance aircraft is scheduled to investigate the disturbance this afternoon. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...70 percent. 3. Showers and thunderstorms over the far eastern tropical Atlantic are associated with a tropical wave that will move off the west coast of Africa today. Environmental conditions are forecast to be marginally conducive for some gradual development over the next few days while the system moves west-northwestward to northwestward over the far eastern Atlantic. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...20 percent. Public advisories issued by the Weather Prediction Center on Post-Tropical Cyclone Nicholas can be found under AWIPS header TCPAT4, WMO header WTNT34 KWNH, and on the web at https://www.wpc.ncep.noaa.gov or hurricanes.gov High Seas Forecasts for the system off the Outer Banks of North Carolina issued by the NOAA Ocean Prediction Center can be found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php
Tropical Outlook 9/15
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Wed Sep 15 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The Weather Prediction Center is issuing advisories on Tropical Depression Nicholas, located near the Texas/Louisiana border. 1. Showers and thunderstorms associated with a low pressure area located a few hundred miles south-southwest of the Cabo Verde Islands continue to show signs of organization. Environmental conditions are expected to remain conducive for development, and a tropical depression is likely to form within the next couple of days. This system is expected to move westward to west-northwestward across the tropical Atlantic during the next several days. * Formation chance through 48 hours...high...80 percent. * Formation chance through 5 days...high...90 percent. 2. A broad area of low pressure located a few hundred miles northeast of the central Bahamas is producing a large area of disorganized showers and thunderstorms. Environmental conditions appear marginally conducive for development, and a tropical depression is likely to form during the next couple of days while the system moves north-northwestward to northward off the southeast U.S. coast. Regardless of development, this system could bring high surf to portions of the southeast and mid-Atlantic U.S. coasts later this week. * Formation chance through 48 hours...medium...60 percent. * Formation chance through 5 days...high...70 percent. 3. A tropical wave is expected to emerge off the west coast of Africa in a day or two. Thereafter, environmental conditions are forecast to be conducive for development while the system moves generally west-northwestward to northwestward over the far eastern Atlantic. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent. Public advisories issued by the Weather Prediction Center on Tropical Depression Nicholas can be found under AWIPS header TCPAT4, WMO header WTNT34 KWNH, and on the web at http://www.wpc.ncep.noaa.gov.
Tropical Outlook 9/14
Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Tue Sep 14 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Nicholas, located over the upper Texas coastal plain near Houston. 1. Showers and thunderstorms associated with a low pressure area located a few hundred miles south-southeast of the Cabo Verde Islands continues to show signs of organization. Environmental conditions are expected to remain conducive for development, and a tropical depression is likely to form during the next couple of days while system moves generally westward at about 15 mph across the eastern tropical Atlantic Ocean. * Formation chance through 48 hours...high...70 percent. * Formation chance through 5 days...high...90 percent. 2. A trough of low pressure located a couple of hundred miles northeast of the southeastern Bahamas is producing a large area of disorganized showers and thunderstorms. Environmental conditions are forecast to be conducive for gradual development during the next few days, and a tropical depression could form while the system moves north-northwestward to northward across the western Atlantic. * Formation chance through 48 hours...medium...40 percent. * Formation chance through 5 days...medium...60 percent.
T.S. Nicholas Advisory # 10A
BULLETIN Tropical Storm Nicholas Intermediate Advisory Number 10A NWS National Hurricane Center Miami FL AL142021 100 PM CDT Tue Sep 14 2021 ...NICHOLAS MOVING SLOWLY EAST-NORTHEASTWARD ACROSS SOUTHERN PORTIONS OF THE HOUSTON METROPOLITAN AREA... ...LIFE-THREATENING FLASH FLOODS EXPECTED ACROSS PORTIONS OF THE DEEP SOUTH DURING THE NEXT COUPLE OF DAYS... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...29.4N 95.0W ABOUT 30 MI...55 KM SE OF HOUSTON TEXAS ABOUT 60 MI...95 KM WSW OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...ENE OR 75 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Storm Surge Warning has been discontinued west of High Island including Galveston Bay. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * High Island Texas to Sabine Pass A Tropical Storm Warning is in effect for... * High Island Texas to Cameron Louisiana A Storm Surge Watch is in effect for... * Sabine Pass to Cameron Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Storm Surge Watch means there is a possibility of life-threatening inundation, from rising water moving inland from the coastline. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 100 PM CDT (1800 UTC), the center of Tropical Storm Nicholas was located near latitude 29.4 North, longitude 95.0 West. Nicholas is moving toward the east-northeast near 7 mph (11 km/h) and this general motion should continue through tonight. An eastward turn is expected over Louisiana by Wednesday. Little motion is anticipated on Thursday. NOAA Doppler weather radar and surface observations indicate that maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Additional weakening is forecast during the next couple of days, and the storm is forecast to become a tropical depression by tonight. Tropical-storm-force winds extend outward up to 140 miles (220 km), mainly over water to the southeast of the center. A TCOON observing station at Texas Point, Sabine Pass, Texas, recently measured a 1-minute sustained wind of 40 mph (65 km/h) and a gust to 53 mph (85 km/h) while a NOAA Ocean Service observing station at Calcasieu Pass, Louisiana, recently reported a 1-minute sustained wind of 39 mph (63 km/h) and a gust to 47 mph (76 km/h). The estimated minimum central pressure is 1003 mb (29.62 inches) based on nearby surface observations. HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce additional rainfall of 5 to 10 inches from the upper Texas coastal area into central to southern Louisiana, far southern Mississippi, far southern Alabama and the western Florida Panhandle through Thursday, with isolated storm totals of 20 inches across southern Louisiana. Life-threatening flash flooding impacts, especially in urbanized metropolitan areas, are possible across these regions. Widespread minor to isolated major river flooding is expected across portions of the upper Texas Gulf Coast and southern Louisiana and Mississippi. For the latest rainfall reports and wind gusts associated with Hurricane Nicholas see the companion storm summary at WBCSCCNS4 with the WMO header ACUS44KWBC or at the following link https://www.wpc.ncep.noaa.gov/discussions/nfdscc4.html STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... High Island, TX to Cameron, LA...2-4 ft San Luis Pass to High Island, TX...1-3 ft Galveston Bay...1-3 ft Cameron, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to continue along the Louisiana coast into this afternoon. Tropical storm conditions in the warning area across the upper Texas coast will diminish this afternoon as Nicholas moves farther to the east. TORNADOES: A tornado or two will be possible today into tonight across southern Louisiana. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.
T.S. Nicholas Advisory # 10
BULLETIN Tropical Storm Nicholas Advisory Number 10 NWS National Hurricane Center Miami FL AL142021 1000 AM CDT Tue Sep 14 2021 ...NICHOLAS MOVING SLOWLY ACROSS THE HOUSTON METROPOLITAN AREA... ...LIFE-THREATENING FLASH FLOODS EXPECTED ACROSS PORTIONS OF THE DEEP SOUTH DURING THE NEXT COUPLE OF DAYS... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...29.6N 95.3W ABOUT 10 MI...15 KM SE OF HOUSTON TEXAS ABOUT 85 MI...140 KM WSW OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...NE OR 40 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued west of High Island, Texas. The Storm Surge Warning has been discontinued south of Port Bolivar, Texas. The Storm Surge Watch has been discontinued east of Cameron, Louisiana. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Bolivar Texas to Sabine Pass including Galveston Bay A Tropical Storm Warning is in effect for... * High Island Texas to Cameron Louisiana A Storm Surge Watch is in effect for... * Sabine Pass to Cameron Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Storm Surge Watch means there is a possibility of life-threatening inundation, from rising water moving inland from the coastline. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Storm Nicholas was located near latitude 29.6 North, longitude 95.3 West. Nicholas is moving toward the northeast near 6 mph (9 km/h) and this general motion should continue today. The storm should move more slowly toward the east-northeast by tonight, and then turn eastward on Wednesday over Louisiana. Little motion is anticipated on Thursday. NOAA Doppler weather radar and surface observations indicate that maximum sustained winds have decreased to near 45 mph (75 km/h) with higher gusts. Additional weakening is forecast during the next couple of days as Nicholas moves farther inland, and the storm is forecast to become a tropical depression by tonight. Tropical-storm-force winds extend outward up to 140 miles (220 km), mainly over water to the southeast of the center. A TCOON observing station at Texas Point, Sabine Pass, Texas, recently measured a 1-minute sustained wind of 40 mph (65 km/h) and a gust to 51 mph (81 km/h). The estimated minimum central pressure is 1002 mb (29.59 inches) based on nearby surface observations. HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce additional rainfall of 5 to 10 inches from the upper Texas coastal area into central to southern Louisiana, far southern Mississippi, far southern Alabama and the western Florida Panhandle through Thursday, with isolated storm totals of 20 inches across southern Louisiana. Life-threatening flash flooding impacts, especially in urbanized metropolitan areas, are possible across these regions. Widespread minor to isolated major river flooding is expected across portions of the upper Texas Gulf Coast and southern Louisiana and Mississippi. For the latest rainfall reports and wind gusts associated with Hurricane Nicholas see the companion storm summary at WBCSCCNS4 with the WMO header ACUS44KWBC or at the following link https://www.wpc.ncep.noaa.gov/discussions/nfdscc4.html STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Port Bolivar, TX to Cameron, LA including Galveston Bay...2-4 ft Port Aransas, TX to Port Bolivar, TX...1-3 ft Aransas Bay, San Antonio Bay, and Matagorda Bay...1-3 ft Cameron, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to continue along the Louisiana coast into this afternoon. Tropical storm conditions in the warning area across the upper Texas coast will diminish this afternoon as Nicholas moves farther to the northeast. TORNADOES: A tornado or two will be possible today into tonight across southern Louisiana. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.
T.S. Nicholas Advisory # 9A
BULLETIN Tropical Storm Nicholas Intermediate Advisory Number 9A NWS National Hurricane Center Miami FL AL142021 700 AM CDT Tue Sep 14 2021 ...NICHOLAS MOVING SLOWLY TOWARD THE HOUSTON METROPOLITAN AREA... ...LIFE-THREATENING FLASH FLOODS EXPECTED ACROSS THE DEEP SOUTH DURING THE NEXT COUPLE OF DAYS... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...29.5N 95.5W ABOUT 15 MI...25 KM SSW OF HOUSTON TEXAS ABOUT 90 MI...145 KM WSW OF BEAUMONT TEXAS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NNE OR 25 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued south of San Luis Pass. The Storm Surge Warning has been discontinued south of San Luis Pass. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * San Luis Pass to Sabine Pass including Galveston Bay A Tropical Storm Warning is in effect for... * San Luis Pass Texas to Cameron Louisiana A Storm Surge Watch is in effect for... * Sabine Pass to Rutherford Beach Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Storm Surge Watch means there is a possibility of life-threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. Interests elsewhere in southwestern Louisiana should monitor the progress of Nicholas. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 700 AM CDT (1200 UTC), the center of Tropical Storm Nicholas was located near latitude 29.5 North, longitude 95.5 West. Nicholas is moving toward the north-northeast near 8 mph (13 km/h) and that general motion should continue this morning. The storm should move more slowly to the northeast later today, and then turn eastward by Wednesday over Louisiana. Little motion is anticipated on Thursday. Data from NOAA Doppler radars indicate that maximum sustained winds have decreased to near 60 mph (95 km/h) with higher gusts. Nicholas should weaken further today as it moves farther inland, and the storm is forecast to become a tropical depression by Wednesday morning. Tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. During the past couple of hours, a Weatherflow station near Galveston Bay, Texas, reported a 1-minute sustained wind of 39 mph (63 km/h) and a gust to 52 mph (84 km/h). Farther to the east, an observing station at Texas Point recently reported a 1-minute sustained wind of 37 mph (60 km/h) and a gust to 45 mph (72 km/h). The estimated minimum central pressure is 999 mb (29.50 inches) based on nearby surface observations. HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce additional rainfall of 5 to 10 inches from the upper Texas coastal area into central to southern Louisiana, far southern Mississippi and far southern Alabama, with isolated storm totals of 20 inches across central to southern Louisiana. Life-threatening flash flooding impacts, especially in urbanized metropolitan areas, are possible across these regions. Widespread minor to isolated major river flooding is expected across portions of the upper Texas Gulf Coast and southern Louisiana and Mississippi. For the latest rainfall reports and wind gusts associated with Hurricane Nicholas see the companion storm summary at WBCSCCNS4 with the WMO header ACUS44KWBC or at the following link https://www.wpc.ncep.noaa.gov/discussions/nfdscc4.html STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... San Luis Pass to High Island, TX including Galveston Bay...3-5 ft High Island, TX to Rutherford Beach, LA...2-4 ft Port Aransas, TX to San Luis Pass, TX...1-3 ft Aransas Bay, San Antonio Bay, and Matagorda Bay...1-3 ft Rutherford Beach, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to continue within the warning area across the upper Texas coast through this morning, and begin along the Louisiana coast later this morning. TORNADOES: A tornado or two will be possible today along the upper Texas Coast and southern Louisiana. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast today. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.