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Remnants of DENNIS Advisory Number 56
 
Issued 17:00Z Sep 06, 1999
 
Advisory Selection
View advisory number:  61   60   59   58   57   56   54   53   52   

ZCZC NFDSCCNS5 ALL
TTAA00 KNFD DDHHMM

STORM SUMMARY NUMBER 56 FOR THE REMNANTS OF "DENNIS"
NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION
HYDROMETEOROLOGICAL PREDICTION CENTER...NWS...CAMP SPRINGS MD
100 PM EDT MON SEP 06 1999

AT 100 PM EDT... THE CENTER OF THE LOW THAT WAS ONCE CALLED DENNIS
WAS LOCATED AT LATITUDE 37.6 NORTH 79.6 WEST...OR 5 MILES NE OF
BUCHANAN, VA. WINDS OF ONLY 10 MPH SURROUND THE REMNANT LOW
CENTER...WITH SUSTAINED WINDS OF 15 TO 20 MPH REPORTED IN THE DC
METROPOLITAN AREA AND THE DELMARVA PENINSULA. IN HIGHER
ELEVATIONS...WINDS GUSTING TO 35 MPH ARE STILL POSSIBLE ACCORDING TO
DOPPLER RADAR VAD WIND PROFILES. THE MINIMUM CENTRAL PRESSURE HAS
RISEN TO 1008 MB...29.77 INCHES. DENNIS IS MOVING NORTH NORTHEAST AT 12
MPH. FURTHER ACCELERATION OF THE LOW IS EXPECTED AS DENNIS MOVES IN
THE FLOW AHEAD OF A COLD FRONT...NOW LOCATED IN THE OHIO VALLEY. 

A FLOOD WATCH REMAINS IN EFFECT TODAY FOR THE MOUNTAINS OF
VA...EASTERN WV...AND WESTERN MD. A FLASH FLOOD WATCH IS IN EFFECT A
SMALL AREA FOR EXTREME SOUTHERN NY STATE. FLASH FLOOD WATCHES
HAVE ALSO BEEN POSTED THROUGH TUESDAY MORNING FOR SOUTHERN
PA...EXTREME SOUTHWEST NJ...AND NORTHERN DE. 

RIVER FLOOD WARNINGS ARE IN EFFECT IN NC FOR THE HAW...NEUSE...AND TAR
RIVERS...ALONG WITH FISHING CREEK. IN VA...RIVER FLOOD WARNINGS WERE IN
EFFECT FOR MEHERRIN AND NOTTOWAY RIVERS...WHICH ROSE ABOVE THEIR
FLOOD STAGES OVERNIGHT. LEVELS WERE EXPECTED TO FALL BELOW FLOOD
STAGE TODAY. DUE TO RAINFALL AMOUNTS NEAR TWO INCHES OVERNIGHT
...VALLEY CREEK IN VALLEY FORGE PA ROSE ABOVE FLOOD STAGE.

SMALL CRAFT ADVISORIES REMAIN IN EFFECT...MAINLY FOR ROUGH SEAS
ALONG THE EASTERN SEABOARD...FROM CHATHAM MA SOUTHWARD TO
SLAUGHTER BEACH DE.

AS THE LOW CONTINUES TO WEAKEN...THE MAIN THREAT FROM THE SYSTEM
THE NEXT 24 HOURS WILL BE FROM LOCALLY HEAVY RAINFALL...RESULTING IN
A CONTINUED THREAT OF FLOODING AND FLASH FLOODING.

RAINFALL AMOUNTS IN EXCESS OF THREE INCHES HAVE FALLEN ACROSS THE
UPSLOPE AREAS OF THE MOUNTAINS OF VA AND WV SINCE YESTERDAY.
RAINFALL IN THE 24-HOUR PERIOD ENDING AT 8 AM EDT AT SUGAR GROVE WV
TOTALED 5.30 INCHES. RAINFALL AMOUNTS AVERAGED ONE INCH ACROSS
MD....3.11 INCHES FELL AT RIVERA BEACH. RAINFALL AMOUNTS NEAR TWO
INCHES IN CHESTER COUNTY PA PUT VALLEY CREEK INTO FLOOD AT VALLEY
FORGE.

RAIN AND THUNDERSTORMS AGAIN DEVELOPED ACROSS EASTERN NC THIS
MORNING.  SATELLITE ESTIMATES OF THIS RAINFALL WERE BETWEEN 1 AND 1.5
INCHES. SHOWERS AND THUNDERSTORMS ALSO ERUPTED NEAR STAUNTON VA.
RAINS FROM THE FORMER FEEDER BAND HAVE SHIFTED NORTH INTO EASTERN
NY.... PROMPTING A FLASH FLOOD WATCH. AN AREA OF SHOWERS AND
THUNDERSTORMS NOW STRETCHES FROM CENTRAL VA NORTHWARD TO THE
PANHANDLE OF WV.

THROUGH TONIGHT...THE HEAVIEST RAINFALL IS EXPECTED TO FALL ALONG
THE TRACK OF DENNIS FROM THE MOUNTAINS OF VA...MD...INTO SOUTHEAST
PA...WHERE 3 TO 5 INCHES OF RAIN IS EXPECTED. A FEW PLACES CAN EXPECT
EVEN GREATER AMOUNTS.

ON TUESDAY....THE HEAVIEST RAINS WILL SPREAD NORTH AND EXTEND FROM
CENTRAL PA SOUTHEAST TO THE EASTERN SHORE OF MARYLAND. RAINFALL
AMOUNTS OF 2 TO 4 INCHES CAN BE EXPECTED IN THAT REGION.

THE MOVEMENT OF THE REMNANTS OF DENNIS SHOULD CONTINUE TO THE
NORTH AND ARE EXPECTED TO BE CENTERED JUST AHEAD OF THE COLD FRONT
IN CENTRAL NY BY NOON TUESDAY.

FOR PUBLIC DISSEMINATION....THE WMO HEADER FOR THIS PRODUCT IS ACUS45
KWBC.

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

ROTH/FORECAST OPERATIONS BRANCH