

792 

WWUS20 KWNS 302334

SEL4

SPC WW 302334

DCZ000-MDZ000-VAZ000-CWZ000-310700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 24

NWS STORM PREDICTION CENTER NORMAN OK

630 PM EST WED JAN 30 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       DISTRICT OF COLUMBIA

       CENTRAL AND SOUTHERN MARYLAND

       CENTRAL AND NORTHERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 630 PM

UNTIL 200 AM EST.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF BALTIMORE

MARYLAND TO 45 MILES WEST OF RICHMOND VIRGINIA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU4).



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 21...WW 22...WW 23...



DISCUSSION...PRE-FRONTAL SQLN WITH EMBEDDED SUSTAINED STORMS/LEWPS

NOW NEAR CHARLOTTESVILLE VA EXPECTED TO MOVE RAPIDLY NEWD AHEAD OF

EJECTING SHORTWAVE TROUGH NOW OVER THE LWR TN VLY. SUFFICIENT

BUOYANCY LIKELY WILL REMAIN PRESENT TO MAINTAIN STRENGTH OF PRESENT

ACTIVITY...WITH SOME INTENSIFICATION POSSIBLE A BIT LATER AS

SHORTWAVE IMPULSE DRAWS CLOSER TO SQLN/AXIS OF LOW-LVL ASCENT.

SHALLOW WSW-ENE BOUNDARY LEFT BY EARLIER WAVE OF STORMS IN THE

BALTIMORE AREA EXPECTED TO EDGE SLIGHTLY NWD THROUGH THE

EVE...THEREBY EXTENDING THE THREAT SOMEWHAT NWD ACROSS THE UPR

CHESAPEAKE BAY INTO AREA NOW BLANKETED BY SHALLOW LAYER OF COOL AIR.



ADDITIONAL STORMS MAY MOVE INTO S CNTRL/SE VA LATER TNGT AS STORMS

MOVE/ACCELERATE ENE FROM NC. THIS AREA MAY REQUIRE A SEPARATE WW

LATER IN THE EVE.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

350. MEAN STORM MOTION VECTOR 22055.





...CORFIDI

