Flash Flood Warning 51, NWS Baltimore/Washington

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
1015 AM EDT THU AUG 30 2001

WEAK HI PRES ACRS THE AREA ATTM ALONG WITH A WEAK FRNTL BNDRY XTNDG
FM NEAR FDK TO BTWN IAD AND DCA THEN E OF EZF. SCT SHWRS AND A FEW
TSTMS HAVE BEEN ACTIVE AHEAD OF THE BNDRY. SAT IMAGERY DEPICTS GNRL
CLDINS E OF THE BLUE RDG WITH PATCHES OF DENSE FOG RMNG TO THE WEST
OF THE RDG WHICH WL DISSIPATE BY ARND NOON. OTW ERLR FCST PKG
APPEARS ON TARGET FOR THE RMNDR OF THE DAY. SLT OR 30 POP CHC WL DO
FOR ANY CONV ACTVTY WHICH WL BE DIURNALLY DRIVEN WITH LTL OR NO UPR
SUPPORT. FOG AND CONV BEING HANDLED WITH NOWS.

THATS IT FOR NOW...LATER.

FCSTID = 13...PAP
DCA   86  72  86  69 /  20  10  30  50
BWI   86  69  86  67 /  20  10  30  50
MRB   85  67  85  65 /  20  10  30  60
IAD   86  67  86  65 /  20  10  30  50
CHO   85  68  85  67 /  30  20  40  50
HGR   85  66  85  64 /  20  10  30  60
NHK   86  69  86  67 /  20  10  30  50
W99   86  68  86  66 /  20  10  30  60

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

DCZ001-MDZ002>006-009>011-013-014-016>018-VAZ021-025>031-036>042-
050>057-WVZ048>055-302345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
450 PM EDT THU AUG 30 2001

...THUNDERSTORMS WITH HAIL AND TORRENTIAL RAINS AFFECTING THE AREA...

SHOWERS AND THUNDERSTORMS...SOME WITH HAIL AND HEAVY RAINS WERE
AFFECTING A LARGE PORTION OF NORTHERN AND CENTRAL VIRGINIA...EASTERN
WEST VIRGINIA...AND CENTRAL AND SOUTHERN MARYLAND THIS AFTERNOON.
THUNDERSTORMS WERE MOST NUMEROUS OVER CENTRAL AND NORTHERN VIRGINIA
ESPECIALLY OVER THE SHENANDOAH VALLEY AND THE PIEDMONT AREAS. PARTS
OF ROCKINGHAM ALBEMARLE AND ORANGE COUNTIES WERE ESPECIALLY HARD
HIT. SEVERE THUNDERSTORM WARNINGS HAD BEEN ISSUED FOR THESE AREAS
LATE THIS AFTERNOON. HAIL TO DIME SIZE OR LARGER WAS REPORTED IN
CHARLOTTESVILLE JUST AFTER 4 PM.

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO AFFECT MUCH OF
THE AREA INTO EARLY THIS EVENING...THEN GRADUALY WEAKEN AFTER
NIGHTFALL. THE STRONGER THUNDERSTORMS MAY BE ACCOMPANIED BY HAIL AND
STRONG GUSTY WINDS. TORRENTIAL RAINS WITH 1 TO 2 INCHES POSSIBLE IN
A SHORT PERIOD MAY RESULT IN LOCALIZED FLOODING. RESIDENTS SHOULD
SEEK INDOOR SHELTER AND MOTORISTS SHOULD NOT ATTEMPT TO DRIVE INTO
WATER ON ROADS.

THE THUNDERSTORMS WERE THE RESULT OF A MOIST AND UNSTABLE AIR MASS
OVER THE AREA AND TRIGGERED PRIMARILY BY DAYTIME HEATING. THUS A
GRADUAL WEAKENING TREND IS EXPECTED AFTER DARK.

JLW