09/06/08: 20:00 EDT/00:00 UT: Hanna Forecast to Lose Tropical Characteristics on Sunday.
National Hurricane Center

18:45:15 AST/22:45 UT, satellite images:
left: RGB Enhanced GOES; right: AVN GOES. Credit: NOAA

GOES-12 RGB satellite image of Hanna and Ike; 08:15 AST/12:15 UT

Tropical Storm Hanna Intermediate Advisory number 40a
Nws TPC/National Hurricane Center Miami Fl al082008
800 pm EDT Sat Sep 06 2008

Hanna a little stronger as it races toward New England...

At 800 pm EDT... 0000z... the tropical storm warning is discontinued south of Cape Henlopen Delaware. A tropical storm warning is now in effect from Cape Henlopen northward to Merrimack River Massachusetts... including Delaware Bay... New York Harbor... Long Island Sound... Block Island... Martha's Vineyard and Nantucket. A tropical storm warning means that tropical storm conditions are expected within the warning area within the next 24 hours.

For storm information specific to your area... including possible Inland watches and warnings... please monitor products issued By your local weather office.

At 800 pm EDT... 0000z... the center of tropical storm Hanna was located near latitude 39.5 north... longitude 74.6 west or near Atlantic New Jersey. This position is also about 110 miles... 180 km... south-southwest of New York City and 120 miles... 195 km southwest of Islip New York.

Hanna is moving toward the northeast near 28 mph... 44 km/hr. This general motion is expected to continue with an increase in forward speed during the next couple of days. On the forecast track... The center of Hanna will cross the eastern mid-Atlantic states tonight... and move near or over southern New England on Sunday morning. The center is forecast to pass near or over the Canadian maritimes on Sunday afternoon.

Information from ships... buoys... and NOAA doppler weather radars indicate maximum sustained winds have increased to near 55 mph... 93 km/hr... with higher gusts. Little change in strength is forecast during the next couple of days. However... Hanna is forecast to lose tropical characteristics on Sunday.

Tropical storm force winds extend outward up to 200 miles... 325 km ... mainly over water to the east and southeast of the center. During the past couple of hours... two ships near the mouth of Delaware Bay reported sustained winds of 49 mph... 80 km/hr and 46 mph... 74 km/hr.

The estimated minimum central pressure based on a recent report from a noaa buoy in Delaware Bay is 992 mb... 29.29 inches.

Storm surge flooding of 1 to 3 feet above normal tide levels... With locally higher levels in bays and accompanied by large and dangerous battering waves... is expected in the warning area. Coastal storm surge flooding along the Atlantic coasts of South Carolina and North Carolina... including the Pamlico and Ablemarle Sounds... should gradually subside tonight.

Hanna is expected to produce rainfall accumulations of 3 to 6 inches from the northern mid-Atlantic states northeastward through new England... with isolated maximum amounts of 8 inches possible. These rainfall amounts could produce flash flooding across these regions.

Isolated tornadoes are possible tonight over the coastal areas of southern New England.

Repeating the 800 pm EDT position... 39.5 n... 74.6 w. Movement toward... northeast near 28 mph. Maximum sustained winds... 55 mph. Minimum central pressure... 992 mb.

The next advisory will be issued by the National Hurricane Center at 1100 pm EDT.

Forecaster Stewart

- courtesy of NOAA National Hurricane Center; image credits: NOAA