Flash Flood Warning 31, NWS Baltimore/Washington

Issued

Sep 2, 2000, 6:33 PM EDT (22:33 UTC)

Expired

Sep 2, 2000, 7:30 PM EDT

In force

57 min

Issued by

NWS Baltimore/Washington

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Calvert County, MD, Saint Mary's County, MD

000 
WGUS51 KLWX 022236
FFWLWX
MDC009-037-022330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
633 PM EDT SAT SEP 2 2000

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALVERT COUNTY IN SOUTHERN MARYLAND
  ST. MARYS COUNTY IN SOUTHERN MARYLAND

* UNTIL 730 PM EDT

* AT 630 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
  THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER CALIFORNIA...MOVING
  SLOWLY SOUTHEAST AT 5 MPH.

TORRENTIAL RAINFALL IN THE WARNED AREA WILL CAUSE FLASH FLOODING IN
CENTRAL AND SOUTHERN ST. MARYS COUNTY AND IN SOUTHERN CALVERT COUNTY.
RAINFALL AMOUNTS IN EXCESS OF 2 INCHES IN ONE HOUR ARE LIKELY WITH
THESE STORMS.

IF WATER IS FLOWING ACROSS A ROADWAY TURN YOUR VEHICLE AROUND AND
FIND AN ALTERNATE ROUTE. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW
YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REP)ORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN STERLING VIRGINIA.

LAT...LON 3847 7654 3832 7665 3811 7631 3834 7614

SMZ/JAB

NWS Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at Sep 2, 2:00 PM EDT, 4 hours 33 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
200 PM EDT SAT SEP 2 2000

AT 18Z...SCT SHRA/TSRA CWA WIDE SLOWLY MOVING NNE WITH RAINFALL
RATES 1-2 IN/HR. UL LOW STILL SPINNING ACROSS E TN. MODELS FCST LOW
TO REMAIN FAIRLY STATIONARY THROUGH SUN NIGHT BUT DYNAMIC FOCUS...
VORT MAX AND VVEL...WILL MOVE OVER CWA LATE TONIGHT THRU SUN NIGHT.
LOOKS LIKE SHRA/TSRA WILL BE MORE NUMEROUS TOMORROW. PRECIP WATER
VALUES REMAIN AROUND 2 INCHES AND ETA FCSTS 1 IN QPF OVER CWA SUN.
WILL GO HIGH CHANCE POPS CWA WIDE TONIGHT..THEN LIKELY SUN AND SUN
NIGHT BECAUSE OF BETTER DYNAMIC FORCING. WILL CONTINUE TO MENTION
HVY RAIN THRU PERIOD SINCE WINDS WITH HEIGHT REMAIN RELATIVELY
LIGHT. WILL ALSO MENTION FOG OVERNIGHT.

BY LATE SUN NIGHT...WEAK 850MB UPSLOPE WINDS WILL SUBSIDE...DYNAMICS
WILL BE ON THE DECREASE AND LOW DRIFTS A BIT FARTHER S.  MODELS PROG
SFC FRONT CURRENTLY OVER GREAT LAKES TO MOVE SSE ACROSS CWA MON NIGHT.
BECAUSE DEEP RH WILL STILL BE HERE MON AND SFC FRONT WILL BE
APPROACHING WILL LEAVE CHANCE POPS IN MON FCST. ATTM EXPECTING FROPA
NW CWA ABOUT 00Z TUE AND AFT 06Z SE. STRONG HI PRES WILL BUILD IN
TUE THRU THU BRINGING QUITE A CHANGE...COOLER AND LESS HUMID AIR
STRAIGHT FROM CANADA.

MODELS HAVE BEEN DOING WELL WITH HI TEMPS...WILL NOT STRAY FAR.

.LWX...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.

MMARGRAF

Flash Flood Warnings in Maryland, 2000Every flash flood warning in 2000

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.