BULLETIN
Tropical Depression Eleven Advisory Number   3
NWS National Hurricane Center Miami FL       AL112020
500 AM AST Wed Aug 12 2020

...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM LATER TODAY...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...12.2N 42.9W
ABOUT 1405 MI...2265 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM AST (0900 UTC), the center of Tropical Depression Eleven 
was located near latitude 12.2 North, longitude 42.9 West. The 
depression is moving toward the west near 15 mph (24 km/h), and this 
general motion is expected to continue through today. A motion 
toward the west-northwest at a similar forward speed is forecast to 
begin tonight and continue through the rest of the week.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. 
Gradual strengthening is forecast during the next 48 hours, and the 
depression is expected to become a tropical storm later today.

The estimated minimum central pressure is 1008 mb (29.77 inches).


HAZARDS AFFECTING LAND
----------------------
None.

BULLETIN
Tropical Depression Eleven Advisory Number   1
NWS National Hurricane Center Miami FL       AL112020
500 PM AST Tue Aug 11 2020

...NEW TROPICAL DEPRESSION FORMS OVER THE TROPICAL ATLANTIC OCEAN...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...11.7N 40.0W
ABOUT 1110 MI...1790 KM WSW OF THE CABO VERDE ISLANDS
ABOUT 1450 MI...2335 KM E OF THE LESSER ANTILLES
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Tropical Depression Eleven
was located near latitude 11.7 North, longitude 40.0 West. The
depression is moving toward the west near 16 mph (26 km/h), and this
general motion is expected to continue through Wednesday.  A
west-northwestward motion at a similar forward speed is forecast to
begin Wednesday night and continue through the rest of the week.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Some strengthening is forecast during the next 48 hours, and the
depression is expected to become a tropical storm by Wednesday
night.

The estimated minimum central pressure is 1007 mb (29.74 inches).


HAZARDS AFFECTING LAND
----------------------
None

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Tue Aug 11 2020

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

First-light visible satellite imagery shows that a better-defined 
center of circulation is forming in association with a low pressure 
system located about 900 miles west-southwest of the Cabo Verde 
Islands.  In addition, the associated shower and thunderstorm 
activity has become more organized since yesterday.  Environmental 
conditions are expected to become more conducive for additional 
development, and advisories could be initiated on a tropical 
depression as early as later today if these development trends 
continue.  The disturbance is forecast to move west-northwestward 
at around 15 mph across the tropical Atlantic during the next few 
days, and conditions are expected to become less conducive for 
development by the end of the week.
* Formation chance through 48 hours...high...90 percent.
* Formation chance through 5 days...high...90 percent.

TCPAT4

BULLETIN
Post-Tropical Cyclone Isaias Advisory Number 33
NWS National Hurricane Center Miami FL AL092020
500 AM EDT Wed Aug 05 2020

…RAIN AND GUSTY WINDS CONTINUE TO SPREAD OVER EASTERN QUEBEC…
…THIS IS THE LAST NHC ADVISORY…

SUMMARY OF 500 AM EDT…0900 UTC…INFORMATION
———————————————-
LOCATION…47.5N 71.8W
ABOUT 55 MI…90 KM NNW OF QUEBEC CITY
MAXIMUM SUSTAINED WINDS…40 MPH…65 KM/H
PRESENT MOVEMENT…NNE OR 15 DEGREES AT 28 MPH…44 KM/H
MINIMUM CENTRAL PRESSURE…1000 MB…29.53 INCHES

WATCHES AND WARNINGS
——————–
There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK
———————-
At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Isaias
was located near latitude 47.5 North, longitude 71.8 West. The
post-tropical cyclone is moving toward the north-northeast near 28
mph (44 km/h), and this general motion is expected with a decrease
in forward speed through tonight.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Weakening is expected, and the winds are expected to drop below
tropical-storm force this morning. The post-tropical cyclone is
expected to dissipate over southeastern Canada on Thursday.

Tropical-storm-force winds extend outward up to 140 miles (220 km)
to the northeast and east of the center primarily over and near
the St. Lawrence River.

The estimated minimum central pressure is 1000 mb (29.53 inches).

HAZARDS AFFECTING LAND
———————-
WIND: Gale-force winds will continue over and near the St.
Lawrence River this morning. Gale-force wind gusts are possible
elsewhere over southeastern Quebec today. See products issued by
Environment Canada for more information.

RAINFALL: Rainfall accumulations of 1 to 3 inches are expected along
and near the track of Isaias across southern Quebec.

Even though the rainfall has ended, scattered minor to moderate and
isolated major river flooding is ongoing across portions of the
Mid-Atlantic with most rivers expected to fall below flood stage
by later today.

SURF: Swells generated by Isaias will affect the coast of the
Northeast United States through this morning. These swells are
likely to cause life-threatening surf and rip current conditions.
Please consult products from your local weather office.

BULLETIN
Tropical Storm Isaias Intermediate Advisory Number 31A
NWS National Hurricane Center Miami FL AL092020
800 PM EDT Tue Aug 04 2020

…CENTER OF ISAIAS NOW MOVING THROUGH THE NEW ENGLAND STATES…

SUMMARY OF 800 PM EDT…0000 UTC…INFORMATION
———————————————-
LOCATION…43.6N 73.0W
ABOUT 5 MI…10 KM NNW OF RUTLAND VERMONT
MAXIMUM SUSTAINED WINDS…50 MPH…80 KM/H
PRESENT MOVEMENT…NNE OR 20 DEGREES AT 40 MPH…65 KM/H
MINIMUM CENTRAL PRESSURE…997 MB…29.44 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

The Tropical Storm Warning has been discontinued west of Watch
Hill, Rhode Island, including Long Island and Long Island Sound.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for…
* Watch Hill Rhode Island to Stonington Maine
* Martha’s Vineyard, Nantucket, and Block Island

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case
within the next 6 to 12 hours.

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 800 PM EDT (0000 UTC), the center of Tropical Storm Isaias was
located by NOAA Doppler weather radars and surface observations near
latitude 43.6 North, longitude 73.0 West. Isaias is moving toward
the north-northeast near 40 mph (65 km/h), and this general motion
is expected through tonight. On the forecast track, the center of
Isaias will continue to move farther inland over eastern New York
and Vermont this afternoon and evening, and over southern Canada
tonight.

Data from Doppler weather radars along with surface observations
indicate that maximum sustained winds have decreased to near 50 mph
(80 km/h) with higher gusts. Continued weakening is expected this
evening, and Isaias is forecast to become post-tropical tonight or
early Wednesday.

Tropical-storm-force winds extend outward up to 205 miles (335 km)
from the center. During the past few hours, there have been numerous
reports of wind gusts of 40-50 mph (65-80 km/h) across portions of
Rhode Island, eastern Massachusetts, and southeastern New Hampshire.

The estimated minimum central pressure based on surface
observations is 997 mb (29.44 inches).

HAZARDS AFFECTING LAND
———————-
Key messages for Isaias can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC,
and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml.

WIND: Widespread tropical-storm conditions are expected tonight in
the tropical storm warning area in southern New England. These
winds could cause significant tree damage and power outages.

Gale-force winds are expected to spread into southeastern Quebec
tonight and Wednesday. See products issued by Environment
Canada for more information.

RAINFALL: Rainfall accumulations of 1 to 3 inches are expected along
and near the track of Isaias across northeast New York, northern
Vermont, northern New Hampshire, and Southern Quebec.

Heavy rainfall near the path of Isaias could result in flash
flooding, particularly through urban areas and the surrounding
terrain of the Adirondack and Green Mountain Ranges through tonight.
Scattered minor to moderate and isolated major river flooding is
ongoing or forecast across portions of the Mid-Atlantic.
Quick-responding rivers in the Northeast will also be susceptible to
minor and possible moderate river flooding.

TORNADOES: A couple of tornadoes are possible across southern New
England through this evening.

SURF: Swells generated by Isaias will spread northward along the
mid-Atlantic and Northeast coasts of the United States through
tonight. These swells are likely to cause life-threatening surf and
rip current conditions. Please consult products from your local
weather office.

BULLETIN
Tropical Storm Isaias Advisory Number 31…Corrected
NWS National Hurricane Center Miami FL AL092020
500 PM EDT Tue Aug 04 2020

Corrected Watches and Warnings summary.

…ISAIAS RACING NORTH-NORTHEASTWARD ACROSS EASTERN NEW YORK…
…STRONG GUSTY WINDS…HEAVY RAINFALL…AND THE THREAT OF
TORNADOES WILL SPREAD NORTHWARD ACROSS SOUTHERN AND CENTRAL NEW
ENGLAND…

SUMMARY OF 500 PM EDT…2100 UTC…INFORMATION
———————————————-
LOCATION…42.7N 74.2W
ABOUT 20 MI…35 KM W OF ALBANY NEW YORK
MAXIMUM SUSTAINED WINDS…65 MPH…100 KM/H
PRESENT MOVEMENT…NNE OR 20 DEGREES AT 40 MPH…65 KM/H
MINIMUM CENTRAL PRESSURE…995 MB…29.39 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

The Tropical Storm Warning has been discontinued south of
Sandy Point, New Jersey, including all of the Chesapeake Bay,
the Tidal Potomac River, and Delaware Bay. The Tropical Storm
Warning has also been discontinued north of Stonington, Maine.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for…
* Sandy Point New Jersey to Stonington Maine
* Long Island and Long Island Sound
* Martha’s Vineyard, Nantucket, and Block Island

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case
within the next 6 to 12 hours.

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 500 PM EDT (2100 UTC), the center of Tropical Storm Isaias was
located by NOAA Doppler weather radars and surface observations near
latitude 42.7 North, longitude 74.2 West. Isaias is moving toward
the north-northeast near 40 mph (65 km/h), and this general motion
is expected through tonight. On the forecast track, the center of
Isaias will continue to move farther inland over eastern New York
and Vermont this afternoon and evening, and over southern Canada
tonight.

Data from Doppler weather radars along with surface observations
indicate that maximum sustained winds have decreased to near 65 mph
(100 km/h) with higher gusts. Gradual weakening is expected this
afternoon and evening, followed by a faster rate of weakening
tonight. Isaias is forecast to become post-tropical tonight or early
Wednesday.

Tropical-storm-force winds extend outward up to 205 miles (335 km)
from the center. During the past hour, a NOAA NOS observing site at
Sandy Hook, New Jersey, reported a sustained wind 41 mph (67 km/h)
and a gust to 50 mph (80 km/h). Wind gusts in excess of 50 mph (80
km/h) have also been reported at multiple sites in southeastern New
York, Connecticut, Rhode Island, and Massachusetts during the past
hour.

The estimated minimum central pressure based on surface
observations is 995 mb (29.39 inches).

HAZARDS AFFECTING LAND
———————-
Key messages for Isaias can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC,
and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml.

STORM SURGE: The combination of 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…

Sandy Hook NJ to Martha’s Vineyard MA including Long Island Sound,
Block Island Sound, Narragansett Bay, Buzzards Bay, and Vineyard
Sound…1-2 ft

WIND: Widespread tropical-storm conditions are expected in the
tropical storm warning area in eastern New York, Long Island, and
southern New England, with wind gusts to hurricane force possible.
These winds could cause significant tree damage and power outages.

Tropical storm conditions are expected to reach southern New
England by late afternoon, and reach northern New England tonight.

Gale-force winds are expected to spread into southeastern Quebec
tonight and Wednesday. See products issued by Environment
Canada for more information.

RAINFALL: The following rainfall accumulations are expected along
and near the track of Isaias:

Eastern New York into Vermont: 2 to 4 inches, isolated maximum
totals 6 inches.

Western Connecticut, western Massachusetts, New Hampshire and
western Maine: 1 to 3 inches. Southern Quebec: 1 to 3 inches.

Heavy rainfall near the path of Isaias, through the Hudson River
Valley, is likely to result in flash flooding, particularly through
urban areas and the surrounding terrain of the Catskills, Adirondack
and Green Mountain Ranges through Tuesday night. Scattered minor to
moderate river flooding is likely across portions of the
Mid-Atlantic. Quick-responding rivers in the Northeast will also be
susceptible to minor and possible moderate river flooding.

TORNADOES: A couple of tornadoes are possible across southern New
England late this afternoon. A risk for tornadoes may continue and
spread across parts of northern New England through this evening.

SURF: Swells generated by Isaias will spread northward along the
mid-Atlantic and Northeast coasts of the United States today. These
swells are likely to cause life-threatening surf and rip current
conditions. Please consult products from your local weather office.
We

TCUAT4

Tropical Storm Isaias Tropical Cyclone Update
NWS National Hurricane Center Miami FL AL092020
400 PM EDT Tue Aug 4 2020

…400 PM EDT POSITION UPDATE…
…STRONG WINDS…HEAVY RAINFALL…AND THE THREAT FOR TORNADOES
WILL CONTINUE ACROSS SOUTHEASTERN NEW YORK…THE NEW YORK CITY
METROPOLITAN AREA…AND SOUTHERN NEW ENGLAND WILL CONTINUE THROUGH
THIS AFTERNOON…

Wind gusts to 66 mph (106 km/h) were recently reported at a
National Ocean Service Site at Sandy Hook North NJ, a Weatherflow
site at Shinnecock Light on Long Island, and another Weatherflow
site at Lighthouse Point in East Haven CT.

Additional wind gusts in excess of 50 mph have been reported across
portions of southeast New York, northeast New Jersey, Connecticut
and Rhode Island during the past hour.

Strong and damaging winds that could knock down trees and power
lines will continue to spread northward across southern New England.

SUMMARY OF 400 PM EDT…2000 UTC…INFORMATION
———————————————–
LOCATION…42.1N 74.5W
ABOUT 50 MI…80 KM SW OF ALBANY NEW YORK
MAXIMUM SUSTAINED WINDS…65 MPH…100 KM/H
PRESENT MOVEMENT…NNE OR 20 DEGREES AT 40 MPH…65 KM/H
MINIMUM CENTRAL PRESSURE…994 MB…29.35 INCHES

BULLETIN
Tropical Storm Isaias Intermediate Advisory Number 30A
NWS National Hurricane Center Miami FL AL092020
200 PM EDT Tue Aug 04 2020

…ISAIAS RACING NORTH-NORTHEASTWARD ACROSS EASTERN PENNSYLVANIA
INTO SOUTHEASTERN NEW YORK…
…STRONG GUSTY WINDS…HEAVY RAINFALL…AND THE THREAT OF
TORNADOES WILL SPREAD NORTHWARD INTO SOUTHERN NEW ENGLAND…

SUMMARY OF 200 PM EDT…1800 UTC…INFORMATION
———————————————-
LOCATION…40.9N 75.1W
ABOUT 65 MI…105 KM w OF NEW YORK CITY
MAXIMUM SUSTAINED WINDS…65 MPH…100 KM/H
PRESENT MOVEMENT…NNE OR 20 DEGREES AT 40 MPH…65 KM/H
MINIMUM CENTRAL PRESSURE…994 MB…29.35 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

The Tropical Storm Warning has been discontinued south of
Chincoteague, Virginia, and south of Smith Point in the Chesapeake
Bay.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for…
* North of Chincoteague Virginia to Eastport Maine
* Chesapeake Bay north of Smith Point
* Tidal Potomac River
* Delaware Bay
* Long Island and Long Island Sound
* Martha’s Vineyard, Nantucket, and Block Island

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case
within the next 12 hours.

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 200 PM EDT (1800 UTC), the center of Tropical Storm Isaias was
located by NOAA Doppler weather radars and surface observations near
latitude 40.9 North, longitude 75.1 West. Isaias is moving toward
the north-northeast near 40 mph (65 km/h), and this general motion
accompanied by some increase in forward speed is expected through
tonight. On the forecast track, the center of Isaias will continue
to move near or along the coast of the mid-Atlantic states today,
and move across the northeastern United States into southern Canada
tonight.

Data from Doppler weather radars along with surface observations
indicate that maximum sustained winds have decreased to near 65 mph
(100 km/h) with higher gusts. Only slow weakening is expected this
afternoon, followed by a faster rate of weakening tonight. Isaias
is forecast to become post-tropical tonight or early Wednesday.

Tropical-storm-force winds extend outward up to 140 miles (220 km)
from the center. The New York Harbor Entrance buoy (44065) recently
reported a sustained wind of 56 mph (91 km/h) and a gust to 72 mph
(117 km/h).

The estimated minimum central pressure based on surface
observations is 994 mb (29.35 inches).

HAZARDS AFFECTING LAND
———————-
Key messages for Isaias can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC,
and on the web at www.hurricanes.gov/text/MIATCDAT4.shtml.

WIND: Widespread tropical-storm conditions are expected in the
tropical storm warning area in the mid-Atlantic states and
southern New England, including portions of the Chesapeake Bay
region today, with wind gusts to hurricane force possible. These
winds could cause significant tree damage and power outages.

Tropical storm conditions are expected to reach southern New
England this afternoon and northern New England tonight.

Gale-force winds are expected to spread into southeastern Quebec
tonight and Wednesday. See products issued by Environment
Canada for more information.

RAINFALL: The following rainfall accumulations are expected along
and near the track of Isaias:

Central and Northern Mid-Atlantic: Additional 2 to 4 inches,
isolated maximum storm totals of 8 inches.

Eastern New York into Vermont: 2 to 4 inches, isolated maximum
totals 6 inches.

Western Connecticut, western Massachusetts, New Hampshire and
western Maine: 1 to 3 inches.

Heavy rainfall along the East Coast, near the path of Isaias, will
result in flash and urban flooding, some of which may be significant
in the mid-Atlantic and Northeast through tonight. Potentially
life-threatening urban flooding remains possible Philadelphia, and
elsewhere along and just west of the I-95 corridor today. Scattered
minor to moderate river flooding is likely across portions of the
Mid-Atlantic. Quick-responding rivers in the Northeast will also be
susceptible to minor river flooding.

TORNADOES: A few tornadoes are possible across northern New Jersey
and southeastern New York, through southern New England, by late
afternoon. A risk for tornadoes may continue across northern New
England through this evening.

SURF: Swells generated by Isaias will spread northward along the
mid-Atlantic and Northeast coasts of the United States today. These
swells are likely to cause life-threatening surf and rip current
conditions. Please consult products from your local weather office.