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Remnants of DENNIS Advisory Number 58
 
Issued 05:00Z Sep 07, 1999
 
Advisory Selection
View advisory number:  61   60   59   58   57   56   54   53   52   

ZCZC NFDSCCNS5 ALL
TTAA00 KNFD DDHHMM

STORM SUMMARY NUMBER 58 FOR THE REMNANTS OF "DENNIS"
NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION
HYDROMETEOROLOGICAL PREDICTION CENTER...NWS...CAMP SPRINGS MD
115 AM EDT TUE SEP 07 1999

AT 100 A.M. EDT... THE CENTER OF THE CIRCULATION THAT WAS ONCE CALLED 
DENNIS WAS LOCATED AT LATITUDE 38.8 NORTH 78.1 WEST LONGITUDE...OR 45
MILES NORTH OF CHARLOTTESVILLE, VIRGINIA.  MAXIMUM SUSTAINED WINDS
OF ONLY 10 MILES PER HOUR WERE OBSERVED. THE MINIMUM CENTRAL
PRESSURE IS UP TO 1009 MB...AND MOVEMENT CONTINUES TO BE TO THE NORTH
NORTHEAST AT 10 MILES AN HOUR.  THE SYSTEM WILL CONTINUE ON THIS
TRACK AS IT INTERACTS WITH A COLD FRONT AND A MID AND UPPER LEVEL
TROUGH IN THE OHIO VALLEY...BRINGING IT INTO CENTRAL PENNSYLVANIA BY
DAYBREAK...AND TO EASTERN LAKE ONTARIO TUESDAY NIGHT.

A LARGE RAIN BAND ON THE EAST SIDE OF THE SYSTEM...FROM CENTRAL
PENNSYLVANIA SOUTHWARD THROUGH EASTERN MARYLAND AND INTO THE
NORTHEAST PIEDMONT OF NORTH CAROLINA...HAS RESULTED IN FLASH FLOOD
WARNINGS BEING ISSUED EARLY THIS MORNING.  SATELLITE ESTIMATES
INDICATE UP TO 2 INCHES OF RAIN HAS FALLEN IN THE LAST THREE HOURS
ACROSS PORTIONS OF NORTHEAST NORTH CAROLINA. THIS AREA OF HEAVY
RAINFALL WILL AFFECT PORTIONS OF THE DELMARVA REGION THE NEXT FEW
HOURS.  DUE TO THE ALREADY HEAVY RAINFALL IN MANY LOCATIONS FROM
DENNIS THE LAST 48 HOURS ...SPECIFICALLY ACROSS NORTH CAROLINA...
SATURATED GROUNDS WILL CAUSE RAPID RUNOFF AND LOCALIZED FLASH
FLOODING.  

AS THE LOW CONTINUES TO SLOWLY WEAKEN AND INTERACT WITH A MID AND
UPPER LEVEL TROUGH ON TUESDAY....THE MAIN THREAT FROM THE SYSTEM
THE NEXT 24 HOURS WILL CONTINUE TO BE FROM LOCALLY HEAVY
RAINFALL...WHICH HAS PROMPTED THE ISSUANCE OF FLASH FLOOD WATCHES. 
DUE TO THE FORECASTED  NORTH NORTHEAST MOVEMENT...THESE FLASH
FLOOD WATCHES HAVE BEEN POSTED THROUGH TUESDAY FOR THE EASTERN
SHORE OF MARYLAND... DELAWARE...MOST OF EASTERN AND CENTRAL
PENNSYLVANIA...NEW JERSEY...PORTIONS OF CENTRAL....SOUTHERN AND
EASTERN NEW YORK STATE....LONG ISLAND AND CONNECTICUT.

RAINFALL AMOUNTS IN THESE WATCH AREAS COULD EASILY REACH 2 TO 4
INCHES...WITH SOME AMOUNTS IN EXCESS OF 4 INCHES IN THE UPSLOPE FLOW 
ACROSS SOME OF THE HIGHER TERRAIN OF PENNSYLVANIA AND NEW YORK
STATE.



FOR PUBLIC DISSEMINATION...THE WMO HEADER FOR THE STORM SUMMARIES
ON DENNIS IS ACUS45 KWBC.

THE NEXT STORM SUMMARY ON DENNIS WILL BE ISSUED AT 700 AM EDT.

WALLY/FORECAST OPERATIONS BRANCH