Hurricane Henri Update

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

At 500 PM EDT (2100 UTC), the center of Tropical Storm Henri was
located near latitude 31.2 North, longitude 73.9 West. Henri is
moving toward the north-northwest near 7 mph (11 km/h).  A turn
toward the north is expected by tonight, and Henri is forecast to
accelerate in that direction through early Sunday.  On the forecast
track, Henri is expected to make landfall in Long Island or 
southern New England on Sunday.

Maximum sustained winds are near 70 mph (110 km/h) with higher
gusts.  Strengthening is forecast during the next day or so, 
and Henri is expected to become a hurricane tonight or Saturday and 
be at or near hurricane strength when it makes landfall in 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).


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 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...

Watch Hill, RI to Chatham, MA including Narragansett Bay,
Buzzards Bay, Vineyard Sound, and Nantucket Sound...3-5 ft
Chatham, MA to Sagamore Beach, MA including Cape Cod Bay...2-4 ft
East Rockaway Inlet, NY to Montauk Point, NY...2-4 ft
North shore of Long Island...2-4 ft
Flushing, NY to Watch Hill, RI...2-4 ft
Cape May, NJ to East Rockaway Inlet, NY...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 on Sunday, with tropical storm conditions expected by early 
Sunday.  Hurricane conditions are possible in the hurricane watch 
area on Sunday, with tropical conditions possible by early Sunday. 
Tropical storm conditions are expected in the tropical storm warning 
area and possible in the tropical storm watch area on Sunday.

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

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