New Tornado Watch Coverages Parts of Maryland, West Virginia & Virginia and Washington, D.C.


A tornado watch has just been issues for most of Maryland, northern Virginia, eastern West Virginia & the Washington, DC metro area until 9 pm ET. This graphic shows this tornado watch & most of the PDS Tornado Watch in southern Virginia & most of the eastern Carolinas.

Tornado Watch 151 Graphic:

Here, you will still see damaging winds, tornadoes & large hail as well. Below is what the Storm Prediction Center is saying on this situation:

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 151
NWS STORM PREDICTION CENTER NORMAN OK
130 PM EDT SAT APR 16 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

DISTRICT OF COLUMBIA
MARYLAND
NORTHERN VIRGINIA
EASTERN WEST VIRGINIA
COASTAL WATERS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 130 PM UNTIL
900 PM EDT.

TORNADOES…HAIL TO 0.5 INCH IN DIAMETER…THUNDERSTORM WIND
GUSTS TO 70 MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF
MARTINSBURG WEST VIRGINIA TO 25 MILES WEST OF RICHMOND VIRGINIA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

REMEMBER…A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION…CONTINUE…WW 150…

DISCUSSION…A STRONGLY FORCED BAND OF TSTMS DEVELOPING ALONG
SYNOPTIC COLD FRONT IS EXPECTED TO PROGRESS EWD ACROSS THE WW AREA
THIS AFTERNOON INTO EVENING. INTENSE PRESSURE FALLS OVER THE MID
ATLANTIC STATES ARE RESULTING IN THE NWD FLUX OF AN INCREASINGLY
WARM AND MOIST BOUNDARY LAYER INTO THE AREA WHICH WILL ALLOW FOR
STORMS TO BECOME PROGRESSIVELY SURFACE-BASED. GIVEN THE VERY STRONG
WIND FIELD IN PLACE…THE POTENTIAL WILL EXIST FOR EMBEDDED BOWING
AND SUPERCELL STRUCTURES WITH A RISK FOR TORNADOES AND DAMAGING WIND
GUSTS.

AVIATION…TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
350. MEAN STORM MOTION VECTOR 21050.

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