Severe Thunderstorm Warning 20, NWS Baltimore/Washington

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
300 PM EDT THU MAY 9 2002

.SHORT TERM /TDA-TNGT-TMRW/...TALE OF TWO AIR MASSES TDA. WRN SXNS
CLRD OUT...AND NOW QUITE UNSTBL. E OF BLU RDG IN THE MARINE
AMS...CIGS BLO 010 VSBY 3-5SM BR. QSTN IS HOW MUCH OF THE STBL AMS
WL BE GOBBLED UP AS CNVCNTN MVS EWD. SUSPECT A LN IN TSRA
IMMEDIATELY E OF PREFRNTL TROF. WND GUSTS BIGGEST CONCERN.
EXTRAPOLATION WUD SGGST TSRA E OF BLURDG BY 00Z TNGT...AND CLR AREA
BFR MIDNGT. AREAL CVRG WUD LEAN TWD CHC POPS.

GOOD DRYING THRAFTR...W/ CAA/NW FLW REIGNING. MOSUN/CLR. FWC/MAV
SIMLR AND ACCEPTED.

HTS

LONG TERM...
THIS WILL BE BRIEF DUE TO SVR WX. HI PRES MOVES EAST OF FA BY
SATURDAY AFTERNOON. AS HIGH SHIFTS E THE NEXT SYSTEM AND FNT WL MOV
IN FORM THE WEST. CHC OF TRW LATE SAT THROUGH MON. LOW PRES WL SHIFT
EAST OF REGION MONDAY NIGH AND WL TAKE PCPN WITH IT. TUE THROUGH
THUR SURFACE HIGH PRESSURE WL ZONAL FLOW A LOFT FOR QUIET WX.
OVERALL ONLY MINOR CHANGES.

ND

.LWX...NONE.

DCZ001-MDZ002>005-009-010-VAZ021-025>031-036>042-050>056-WVZ048>055-
092145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
339 PM EDT THU MAY 9 2002

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM FOR MUCH OF
NORTHERN VIRGINIA....WESTERN AND CENTRAL MARYLAND...EASTERN WEST
VIRGINIA AND THE DISTRICT OF COLUMBIA.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 7 PM FOR AREAS WEST
OF A LINE FROM CARROLL COUNTY MARYLAND THROUGH THE DISTRICT OF
COLUMBIA TO THE FREDERICKSBURG AREA.

AT 330 PM DOPPLER WEATHER RADAR INDICATED SHOWERS ACROSS CENTRAL
MARYLAND IN AN AREA NORTHWEST OF WASHINGTON DC TO JUST WEST OF
BALTIMORE. THESE SHOWERS ARE MOVING NORTHEASTWARD AND HAVE BEEN
WEAKENING OVER THE PAST COUPLE OF HOURS.

AN AREA OF SHOWERS AND THUNDERSTORMS WAS MOVING INTO WESTERN
MARYLAND...EASTERN WEST VIRGINIA AND NORTHWEST AND WEST CENTRAL
VIRGINIA. THE STRONGEST THUNDERSTORMS EXTENDED FROM WESTERN
ROCKINGHAM INTO WESTERN AUGUSTA COUNTY. THESE THUNDERSTORMS WERE
MOVING EAST AT 35 MPH AND WILL AFFECT STAUNTON AND HARRISONBURG
DURING THE NEXT HOUR. THESE THUNDERSTORMS COULD CONTAIN HEAVY
RAIN...LIGHTNING...GUSTY WINDS AND POSSIBLY SMALL HAIL.

STAY TUNED TO TV...RADIO AND NOAA WEATHER RADIO FOR UPDATES
THROUGHOUT THE AFTERNOON AND EVENING.

DMW/JLW

MDZ003-VAZ025>031-036>042-050-051-WVZ051>053-092145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
409 PM EDT THU MAY 9 2002

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM FOR MUCH OF
NORTHERN VIRGINIA....WESTERN AND CENTRAL MARYLAND...EASTERN WEST
VIRGINIA AND THE DISTRICT OF COLUMBIA.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 7 PM FOR AREAS WEST
OF A LINE FROM CARROLL COUNTY MARYLAND THROUGH THE DISTRICT OF
COLUMBIA TO THE FREDERICKSBURG AREA.

AT 405 PM DOPPLER WEATHER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM HAMPSHIRE COUNTY WEST VIRGINIA
SOUTHWARD THROUGH HARRISONBURG VIRGINIA TO STAUNTON VIRGINIA. THESE
STORMS ARE MOVING EAST AT 35 MPH. THESE STORMS HAVE BEEN
INTENSIFYING DURING THE PAST HOUR AND ARE CAPABLE OF PRODUCING
HAIL...WIND GUSTS TO 50 MPH...HEAVY RAIN AND LIGHTNING.

IF THREATENING WEATHER APPROACHES...SEEK SHELTER.

STAY TUNED TO TV...RADIO AND NOAA WEATHER RADIO FOR UPDATES.

DMW/JLS