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Tropical Depression FLORENCE Advisory Number 75
 
Issued 03:00Z Sep 18, 2018
 
Advisory Selection
View advisory number:  77   76   75   74   73   72   71   70   69   


BULLETIN
Post-Tropical Cyclone Florence Advisory Number  75...Corrected
NWS Weather Prediction Center College Park MD   AL062018
1100 PM EDT Mon Sep 17 2018

Corrected present movement in summary section
...FLORENCE IS AN ELONGATED LOW PRESSURE AREA AS IT CONTINUES TO
PRODUCE HEAVY RAIN OVER PORTIONS OF THE MID-ATLANTIC STATES...


SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...39.8N 80.2W
ABOUT 20 MI...30 KM NW OF MORGANTOWN WEST VIRGINIA
ABOUT 260 MI...420 KM W OF PHILADELPHIA PENNSYLVANIA
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...NE OR 35 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 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 1100 PM EDT (0300 UTC), the center of Post-Tropical Cyclone
Florence was located near latitude 39.8 North, longitude 80.2 West.
The post-tropical cyclone is moving toward the northeast near 12 mph
(19 km/h) and this motion is expected to become more easterly and
quicker on Tuesday and 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 Tuesday night and Wednesday as the
system transitions into an extratropical cyclone.

The estimated minimum central pressure is 1008 mb (29.77 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL: Florence is expected to produce heavy to excessive
rainfall through Tuesday. Portions of the northern Mid-
Atlantic states and southern New England are expected to receive an
additional 2 to 4 inches of rain...with isolated maximum amounts of
6 inches possible.


For more information on rainfall totals please see the Storm Summary
available at www.wpc.ncep.noaa.gov/discussions/nfdscc4.html

NEXT ADVISORY
-------------
Next complete advisory at 500 AM EDT.


Forecaster Roth

FORECAST POSITIONS AND MAX WINDS

INIT  18/0300Z 39.8N  80.2W   20 KT  25 MPH...POST-TROPICAL
 12H  18/1200Z 40.4N  77.2W   20 KT  25 MPH...POST-TROPICAL
 24H  19/0000Z 40.7N  73.0W   25 KT  30 MPH...POST-TROPICAL
 36H  19/1200Z 40.5N  67.5W   25 KT  30 MPH...POST-TROP/EXTRATROP
 48H  20/0000Z 39.5N  64.9W   30 KT  35 MPH...POST-TROP/EXTRATROP