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Henri Still a Hurricane

| August 22, 2021 @ 4:15 am

Henri is still a hurricane this morning, but it is likely to weaken to just below hurricane strength before making landfall around noon in Rhode Island after passing near Block Island. It appears that the center will miss eastern Long Island, but Montauk will be in the western eyewall or core.

It is carrying dangerous storm surge of 3-5 feet on its eastern side.

BULLETIN
Hurricane Henri Advisory Number 26
NWS National Hurricane Center Miami FL AL082021
500 AM EDT Sun Aug 22 2021

…OUTER BANDS OF HENRI MOVING ONSHORE IN EASTERN LONG ISLAND AND
SOUTHERN NEW ENGLAND…
…A DANGEROUS STORM SURGE, HURRICANE CONDITIONS, AND FLOODING
RAINFALL ARE EXPECTED IN PORTIONS OF THE NORTHEAST UNITED STATES…

SUMMARY OF 500 AM EDT…0900 UTC…INFORMATION
———————————————-
LOCATION…40.1N 71.2W
ABOUT 80 MI…125 KM SSE OF MONTAUK POINT NEW YORK
ABOUT 120 MI…190 KM S OF PROVIDENCE RHODE ISLAND
MAXIMUM SUSTAINED WINDS…75 MPH…120 KM/H
PRESENT MOVEMENT…N OR 350 DEGREES AT 18 MPH…30 KM/H
MINIMUM CENTRAL PRESSURE…986 MB…29.12 INCHES

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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for…
* South shore of Long Island from Mastic Beach to Montauk Point New
York
* North shore of Long Island from Montauk Point to Flushing New York
* Flushing New York to Chatham Massachusetts
* Nantucket, Martha’s Vineyard, and Block Island

A Storm Surge Watch is in effect for…
* East Rockaway Inlet to Mastic New York
* North of Chatham Massachusetts to Sagamore Beach Massachusetts
* Cape Cod Bay

A Hurricane Warning is in effect for…
* South shore of Long Island from Fire Island Inlet to Montauk Point
* North shore of Long Island from Port Jefferson Harbor to Montauk
Point
* New Haven Connecticut to west of Westport Massachusetts
* Block Island

A Tropical Storm Warning is in effect for…
* Port Jefferson Harbor to west of New Haven Connecticut
* South shore of Long Island from west of Fire Island Inlet to East
Rockaway Inlet
* Westport Massachusetts to Chatham Massachusetts, including
Martha’s Vineyard and Nantucket
* Coastal New York and New Jersey west of East Rockaway Inlet to
Manasquan Inlet, including New York City

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 Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area.

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.

Interests elsewhere in the northeastern U.S. should monitor the
progress of Henri.

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 AM EDT (0900 UTC), the center of Hurricane Henri was located
near latitude 40.1 North, longitude 71.2 West. Henri is moving
toward the north near 18 mph (30 km/h). A decrease in forward
speed and a turn toward the north-northwest is expected this
morning. On the forecast track, Henri is expected to make landfall
in southern New England or on Long Island late this morning or
early this afternoon. After landfall, a turn to the north and a
slower forward speed are expected as Henri moves over southern New
England.

Maximum sustained winds are near 75 mph (120 km/h) with higher
gusts. Little change in strength is expected this morning, and
Henri is forecast to be at or near hurricane strength when it
reaches the coasts of southern New England and Long island. Rapid
weakening is expected after Henri makes landfall.

Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 125 miles
(205 km).

The latest minimum central pressure estimated from Air Force
Hurricane Hunter data is 986 mb (29.12 inches).

HAZARDS AFFECTING LAND
———————-
Key messages for Henri can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC
and on the web at
www.hurricanes.gov/graphics_at3.shtml?key_messages.

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…

Flushing, NY to Chatham, MA including Narragansett Bay, Buzzards
Bay, Vineyard Sound, and Nantucket Sound…3-5 ft
North shore of Long Island from Flushing to Montauk Point, NY
including Long Island Sound…3-5 ft
South shore of Long Island from Mastic Beach to Montauk Point,
NY…3-5 ft
Chatham, MA to Sagamore Beach, MA including Cape Cod Bay…2-4 ft
South shore of Long Island from East Rockaway Inlet to Mastic Beach,
NY…2-4 ft
Cape May, NJ to East Rockaway Inlet, NY…1-3 ft
Sagamore Beach, MA to Merrimack River including Massachusetts
Bay…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: Hurricane conditions are expected in the hurricane warning
area today, with tropical storm conditions beginning within the
next hour or two. Tropical storm conditions are expected
in the tropical storm warning area beginning this morning and
continuing into tonight.

RAINFALL: Henri is expected to produce rainfall amounts of 3 to 6
inches over portions of Long Island, New England, southeast New
York, New Jersey, and northeast Pennsylvania today into Monday, with
isolated maximum totals near 10 inches. Heavy rainfall from Henri
may result in considerable flash, urban, and small stream flooding,
along with the potential for widespread minor to isolated moderate
river flooding.

TORNADOES: A tornado or two may occur today over southern
New England.

SURF: Swells generated by Henri should continue to affect Bermuda
today. Swells are expected to increase across much of the east
coast of the U.S. and Atlantic Canada today and continue into
Monday. These swells could cause life-threatening surf and rip
current conditions. Please consult products from your local
weather office.

NEXT ADVISORY
————-
Next intermediate advisory at 800 AM EDT.
Next complete advisory at 1100 AM EDT.

$$
Forecaster Brown

Category: ALL POSTS, Headlines, Tropical

About the Author ()

Bill Murray is the President of The Weather Factory. He is the site's official weather historian and a weekend forecaster. He also anchors the site's severe weather coverage. Bill Murray is the proud holder of National Weather Association Digital Seal #0001 @wxhistorian

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