Tornado Watch 24

Issued

Jan 30, 2013, 6:31 PM EST (23:31 UTC)

Expired

Jan 31, 2013, 2:32 AM EST

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

65 kt

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 23:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

30%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 101Jan 30, 4:06 PM EST
• Mesoscale Discussion 108Jan 30, 9:38 PM EST
• Mesoscale Discussion 110Jan 31, 12:52 AM EST

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

Tornado Watches in Virginia, 2013Tornado Watches in Maryland, 2013Every tornado watch in 2013

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; radar from the NEXRAD Level II archive.