NOAA Updates from the National Hurricane Center
The National Hurricane Center has launched weather updates for Tropical Storm Henri on August 20, 2021. These updates include new watch and warning areas, along with predictions for the storm expected to become a hurricane before making landfall. Here’s a rundown of the latest updates for August 20 at 6pm ET.
Location, coordinates and movement of Tropical Storm Henri
NHC starting at 5 pm ET.
As of August 20 at 5 p.m., Henri was located at 31.2N, 73.9W about 290 miles south-southeast of Cape Hatteras, North Carolina, and about 695 miles south of Montauk Point, New York.
The storm is moving north to northwest (340 degrees) at 7 mph.
The National Hurricane Center noted at 5 pm that Henri was “almost a hurricane” and added:
At 500 PM EDT (2100 UTC), the center of Tropical Storm Henri was near latitude 31.2 north, longitude 73.9 west. Henri is moving northwest at about 7 mph (11 km / h). A turn to the north is expected tonight, and Henri is forecast to accelerate in that direction until early Sunday morning. In the forecast
track, Henri is expected to make landfall on Long Island or southern New England on Sunday.
Maximum sustained winds are near 70 mph (110 km / h) with stronger gusts. Strengthening is forecast for the next day or so, and Henri is expected to become a hurricane tonight or Saturday and have or near hurricane strength when it makes landfall on Long Island or southern New England.
Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center.
The estimated minimum central pressure is 994 mb (29.36 inches).
Wind Force and Pressure from Tropical Storm Henri
At 5 p.m., the storm’s maximum sustained winds were 70 mph, with stronger gusts. Strengthening is expected and the storm is likely to become a hurricane sometime Friday night or Saturday.
The minimum central pressure is 994 mb or 29.36 inches.
The storm can produce rainfall of three to six inches, with isolated areas close to 10 inches. In addition, the NHC warned: “The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to flood with increased waters moving inland from the coast.”
In an NHC discussion, you can read here, meteorologists noted:
Henri seems to be slowly gaining strength. Deep convection has increased over the past few hours and the upper level outflow continues to better establish itself on the east side of the circulation. However, the low-level center is still near the northwestern edge of deep convection due to constant north wind shear. An ASCAT-B pass a few hours ago showed peak winds of around 55 kt, with the strongest winds on the southeast side of the circulation. Based on these data, the initial intensity is set at 60 kt. An Air Force Reserve Hurricane Hunter plane is scheduled to investigate Henri again tonight and the data the plane collects will be very helpful in estimating the strength and structure of the storm.
Current notices and notices
According to the National Hurricane Center, the following warnings and watches are in effect as of 5 pm
Hurricane Warning:
Long Island’s South Shore from Fire Island Inlet to Montauk Point
Long Island’s North Shore from Port Jefferson Harbor to Montauk
Point
New Haven Connecticut west of Watch Hill Rhode Island
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Hurricane Warning:
Look from Rhode Island Hill to Sagamore Beach, Massachusetts
Nantucket, Martha’s Vineyard and Block Island
Tropical Storm Warning:
Port Jefferson Harbor west of New Haven Connecticut
South Shore of Long Island from West Fire Island Inlet to the East
Rockaway entrance
Tropical storm watch:
Manasquan Inlet New Jersey west of East Rockaway Inlet New
York, including New York City
Storm surge warning:
Long Island’s South Shore from Mastic Beach to Montauk Point
North Shore of Long Island from Oyster Bay to Montauk Point
Greenwich Connecticut to Chatham Massachusetts
Nantucket, Martha’s Vineyard and Block Island
Storm surge monitoring:
South Shore of Long Island from west of Mastic Beach to the east
Rockaway entrance
North Shore of Long Island from West Oyster Bay to Flushing
Flushing New York west of Greenwich Connecticut
North from Chatham Massachusetts to Sagamore Beach Massachusetts
Cape cod bay
Additional alerts and warnings may be issued, so stay tuned for local news for updates in your region.
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