BULLETIN
Tropical Storm Beta Advisory Number 8…Corrected
NWS National Hurricane Center Miami FL AL222020
1000 AM CDT Sat Sep 19 2020
Corrected Storm Surge amounts
…BETA STARTING ITS WESTWARD TURN…
…TROPICAL STORM WARNING ISSUED FOR PORTIONS OF THE TEXAS AND
LOUISIANA COASTS…
SUMMARY OF 1000 AM CDT…1500 UTC…INFORMATION
———————————————–
LOCATION…26.6N 92.6W
ABOUT 305 MI…495 KM ESE OF CORPUS CHRISTI TEXAS
ABOUT 245 MI…395 KM S OF LAKE CHARLES LOUISIANA
MAXIMUM SUSTAINED WINDS…60 MPH…95 KM/H
PRESENT MOVEMENT…NW OR 315 DEGREES AT 3 MPH…6 KM/H
MINIMUM CENTRAL PRESSURE…994 MB…29.36 INCHES
WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:
A Tropical Storm Warning is now in effect from Port Aransas, Texas
to Intracoastal City, Louisiana.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Watch is in effect for…
* Port Mansfield, TX to Cameron, LA including Baffin Bay, Corpus
Christi Bay, Copano Bay, Aransas Bay, San Antonio Bay, Matagorda
Bay, Galveston Bay, Sabine Lake and Calcasieu Lake
A Hurricane Watch is in effect for…
* Port Aransas Texas to High Island Texas
A Tropical Storm Warning is in effect for…
* Port Aransas Texas to Intracoastal City Louisiana
A Tropical Storm Watch is in effect for…
* South of Port Aransas Texas to the Mouth of the Rio Grande
* East of Intracoastal City Louisiana to Morgan City Louisiana
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.
A Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours
before the anticipated first occurrence of tropical-storm-force
winds, conditions that make outside preparations difficult or
dangerous.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
A Hurricane Warning may be required for portions of the Texas coast
later today or tonight.
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 Beta was
located near latitude 26.6 North, longitude 92.6 West. Beta is
moving toward the northwest near 3 mph (6 km/h). A slow westward
motion is expected to begin later today, with a slow northwestward
motion forecast to begin late Sunday or Sunday night and continue
through late Monday. On the forecast track, the center of Beta
will slowly approach the Texas coast into early next week.
Maximum sustained winds are near 60 mph (95 km/h) with higher gusts.
Little change in strength is expected today. After that, slow
strengthening is forecast, and Beta is expected to be at or near
hurricane strength Sunday night or Monday.
Tropical-storm-force winds extend outward up to 175 miles (280 km)
from the center.
The estimated minimum central pressure is 994 mb (29.36 inches).
HAZARDS AFFECTING LAND
———————-
Key messages for Beta can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC.
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 Mansfield, TX to Cameron, LA including Baffin Bay, Corpus
Christi Bay, Copano Bay, Aransas Bay, San Antonio Bay, Matagorda
Bay, Galveston Bay, Sabine Lake, and Calcasieu Lake…2-4 ft
Mouth of the Rio Grande, TX to Port Mansfield, TX…1-3 ft
Cameron, LA to Ocean Springs, MS including Vermilion Bay…1-3 ft
Lake Maurepas, Lake Pontchartrain, and Lake Borgne…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 in the tropical storm
Warning area by late Sunday or Sunday night. Hurricane conditions
are possible within the hurricane watch area by late Monday or
Monday night. Tropical storm conditions are possible within the
tropical storm watch area along the southwestern Louisiana coast as
early as tonight. Tropical storm conditions are possible within
the tropical storm watch area along the south Texas coast Sunday
night
RAINFALL: Beta has the potential to produce a long-lived rainfall
event along the western Gulf Coast. Today through Tuesday, Beta is
expected to produce rainfall accumulations of 3 to 5 inches with
isolated totals of 10 inches beginning Saturday across southern
Louisiana and spreading into coastal Texas on Sunday. Flash and
urban flooding is likely as well as minor river flooding. Additional
heavy rainfall amounts across the western Gulf Coast are possible
through late week as Beta is expected to move slowly near the Texas
coast.
SURF: Swells are expected to increase and reach the coast of Texas
and the Gulf Coast of Mexico later today, generated by a combination
of Beta and a cold front entering the northern Gulf of Mexico.
These swells are likely to cause life-threatening surf and rip
current conditions. Please consult products from your local weather
office.The