National Hurricane Center Advisories

	
248 
WTNT31 KWNH 180852
TCPAT1

BULLETIN
Post-Tropical Cyclone Florence Advisory Number  76
NWS Weather Prediction Center College Park MD   AL062018
500 AM EDT Tue Sep 18 2018

...FLORENCE IS AN ELONGATED LOW PRESSURE AREA AS IT CONTINUES TO
PRODUCE HEAVY RAIN OVER NORTHERN PORTIONS OF THE MID-ATLANTIC STATES
INTO SOUTHERN NEW ENGLAND...


SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...41.3N 75.9W
ABOUT 105 MI...170 KM WNW OF NEW YORK CITY
ABOUT 100 MI...165 KM NNW OF PHILADELPHIA PENNSYLVANIA
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...E OR 100 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES


WATCHES AND WARNINGS
--------------------

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

There are no coastal watches or warnings in effect.

Flash flood watches are in effect from Maryland and northern
Virginia northward into southern New York then eastward across
portions of southern New England.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone
Florence was located near latitude 41.3 North, longitude 75.9 West.
The post-tropical cyclone is moving toward the east near 13 mph (20
km/h) and this motion is expected to turn more east-southeasterly
later Tuesday into Wednesday before Florence becomes absorbed by
another low pressure area on Thursday.

Maximum sustained winds are near 25 mph (35 km/h) with higher gusts.
Some strengthening is forecast during the next 48 hours as the
system transitions into an extratropical cyclone.

The estimated minimum central pressure is 1006 mb (29.71 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL: The remnants of Florence are expected to produce heavy to
potentially excessive rainfall through Tuesday. Portions of the
northern mid-Atlantic states northeast through southern New England
are expected to receive an additional 1 to 2 inches of rain, with
isolated maximum amounts of 4 inches possible.


For more information on rainfall totals please see the Storm Summary
available at www.wpc.ncep.noaa.gov/discussions/nfdscc1.html

NEXT ADVISORY
-------------
Next complete advisory at 1100 AM EDT.

$$
Forecaster Hurley

FORECAST POSITIONS AND MAX WINDS

INIT  18/0900Z 41.3N  75.9W   20 KT  25 MPH...POST-TROPICAL
 12H  18/1800Z 40.9N  73.9W   20 KT  25 MPH...POST-TROP/EXTRATROP
 24H  19/0600Z 39.6N  71.5W   25 KT  30 MPH...POST-TROP/EXTRATROP
 36H  19/1800Z 38.5N  67.5W   30 KT  35 MPH...POST-TROP/EXTRATROP
 48H  20/0600Z 38.0N  64.5W   35 KT  40 MPH...POST-TROP/EXTRATROP


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