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Remnants of ALLISON Advisory Number 49
 
Issued 15:00Z Jun 17, 2001
 
Advisory Selection
View advisory number:  52   51   50   49   48   47   46   45   44   43   42   41   40   39   38   37   36   35   34   33   32   31   30   29   28   
27   26   25   24   23   22   21   20   19   18   17   16   15   14   13   12   11   10   9   8   7   6   5   

STORM SUMMARY NUMBER 49 FOR THE REMAINS OF "ALLISON" 
NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION
HYDROMETEOROLOGICAL PREDICTION CENTER...NWS...CAMP SPRINGS MD
1100 AM EDT SUN JUN 17 2001

THE SURFACE LOW ASSOCIATED WITH THE REMAINS OF "ALLISON" WAS
LOCATED NEAR 39.3N 74.0W...JUST EAST OF ATLANTIC CITY NEW JERSEY.  DURING THE
PAST FEW HOURS...WINDS HAVE BEEN STRENGTHENING NEAR THE CENTER...AT
1000 AM...ATLANTIC CITY REPORTED SUSTAINED WINDS OF 29 MPH WITH GUSTS
TO 39 MPH.  NEAR THE CENTER...AND 25 TO 30 MPH JUST OFFSHORE.  THE
ESTIMATED CENTRAL PRESSURE OF THE SYSTEM REMAINS 1004 MB...29.64
INCHES OF MERCURY.  THE CIRCULATION CENTER OF THIS SYSTEM IS CLEARLY VISIBLE
ON RADAR.  VERY HEAVY RAINS ARE FALLING TO THE NORTH OF ALLISON'S
REMNANTS. THE LOW IS INTERACTING WITH AND BEGINNING TO MERGE WITH A COLD
FRONT IMMEDIATELY TO ITS WEST...WHICH IS HELPING TO AUGMENT AND FOCUS THE
ASSOCIATED RAINS...ESPECIALLY TO THE NORTH OF THE CENTER.  THIS SYSTEM
SEEMS TO BE ACCELERATING ON ANIMATED RADAR AND SATELLITE IMAGERY.
DURING THE PAST 6 HOURS...THE CENTER OF THIS SYSTEM HAS MOVED
NORTHEASTWARD AT 13 MPH.  IF THIS TREND IN THE MOVEMENT OF THIS
SYSTEM CONTINUES...THE SURFACE LOW SHOULD CROSS LONG ISLAND LATER THIS
AFTERNOON.

24-HOUR DOPPLER RADAR ESTIMATES PLACE THE MOST RAINFALL IN A BAND
RUNNING FROM THE DELMARVA PENINSULA INTO SOUTHWESTERN
CONNECTICUT...WHERE 2 OR MORE INCHES FELL.  HOWEVER...SOUTHEASTERN
PENNSYLVANIA APPEARS TO HAVE BEEN VERY HARD HIT...WITH MORE THAN 6
INCHES OF ESTIMATED RAINFALL OCCURRING.  IN FACT...AN EXAMINATION OF
SURFACE OBSERVATION DATA FROM WILLOW GROVE NAVAL AIR STATION
SHOWS THAT AT LEAST 8.5 INCHES OF RAIN HAS FALLEN THERE FROM 800 AM
SATURDAY MORNING TO 1100 PM SATURDAY EVENING.  THE REMNANTS OF "ALLISON" WILL
CONTINUE SPREADING VERY HEAVY RAINS NORTHWARD...LOCALES FROM NEW
JERSEY NORTHWARD INTO NEW ENGLAND CAN EXPECT RAINFALL RATES OF UP
TO TWO INCHES PER HOUR...WITH ISOLATED RAINFALL ACCUMULATIONS OF 5
INCHES
OR MORE.

FLASH FLOOD WATCHES EXTEND FROM EXTREME NORTHEASTERN MARYLAND
AND DELAWARE NORTHWARD THROUGH NEW JERSEY AND NEW YORK INTO
WESTERN CONNECTICUT...MASSACHUSETTS...AND VERMONT.  FLASH FLOOD WARNINGS
ARE IN EFFECT FOR MONMOUTH COUNTY IN NEW JERSEY UNTIL 12:15 PM EDT. 
ADDITIONAL FLASH FLOOD WARNINGS ARE IN EFFECT FOR BERGEN...ESSEX...PASSAIC...AND
UNION COUNTIES IN NORTHEAST NEW JERSEY...AS WELL AS ROCKLAND COUNTY
IN SOUTHEAST NEW YORK....UNTIL 1:30 PM EDT.  A FLASH FLOOD WARNING HAS
BEEN ISSUED FOR LITCHFIELD COUNTY IN NORTHERN CONNECTICUT UNTIL 3:30 PM.


SELECTED 24 HOUR RAINFALL TOTALS INCLUDE:

NORTH CAROLINA (THROUGH 8 AM EDT, IN INCHES)

ROCKY MOUNT-WILSON....................1.92

VIRGINIA (THROUGH 8 AM EDT, IN INCHES)

NORFOLK...............................4.27
NEWPORT NEWS..........................2.10
NATIONAL AIRPORT/CRYSTAL CITY.........1.64
LURAY.................................1.23

MARYLAND (THROUGH 8 AM EDT, IN INCHES)

DAMASCUS..............................1.38 

PENNSYLVANIA (THROUGH 8 AM EDT, IN INCHES)

DYLESTOWN-NESHAMINY CREEK.............9.18 
WILLOW GROVE NAVAL AIR STATION........8.47 THROUGH 10 PM 
DOYLESTOWN............................4.57 
PHILADELPHIA..........................3.05
PHILADELPHIA NE.......................2.75

DELAWARE (THROUGH 8 AM EDT, IN INCHES)

WILMINGTON............................2.77 
DOVER.................................3.94
GEORGETOWN............................2.58 

NEW JERSEY (THROUGH 8 AM EDT, IN INCHES)

CALDWELL/ESSEX COUNTY AP..............5.10 
WILDWOOD..............................3.14                             
 
NEW YORK (THROUGH 8 AM EDT, IN INCHES)

BINGHAMTON............................3.57
SLIDE MT..............................3.24 

CONNECTICUT (THROUGH 8 AM EDT, IN INCHES)

DANBURY...............................3.92 

THE NEXT STORM SUMMARY WILL BE ISSUED AT 5 PM EDT.     

MCELROY/FORECAST OPERATIONS BRANCH