Tornado Watch 63

Issued

Mar 26, 2011, 3:27 PM CDT (20:27 UTC)

Expired

Mar 26, 2011, 10:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Jackson/Brandon,MS radar (KDGX), 142 km from the middle of the area, began a volume at 20:27 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

40%

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

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 279Mar 26, 2:27 PM CDT
• Mesoscale Discussion 286Mar 26, 8:32 PM CDT
• Mesoscale Discussion 287Mar 26, 9:33 PM CDT

735 
WWUS20 KWNS 262029
SEL3
SPC WW 262029
ARZ000-LAZ000-MSZ000-270300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 63
NWS STORM PREDICTION CENTER NORMAN OK
330 PM CDT SAT MAR 26 2011

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

       PARTS OF SOUTHERN ARKANSAS
       PARTS OF NORTHEASTERN LOUISIANA
       PARTS OF CENTRAL AND NORTHERN MISSISSIPPI

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH OF EL DORADO
ARKANSAS TO 20 MILES EAST NORTHEAST OF COLUMBUS MISSISSIPPI.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 62...

DISCUSSION...AHEAD OF THE COLD FRONT ACROSS NWRN MS AND SRN AR THE
AIR MASS HAS BECOME QUITE UNSTABLE WITH MLCAPES AOA 2500 J/KG WITH
LITTLE REMAINING CINH.  THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY
ALONG AND JUST AHEAD OF THE COLD FRONT AS IT MOVES SEWD THRU THE
WATCH.  40-50 KT OF DEEP LAYER SHEAR AND STEEP LAPSE RATES FAVOR
SUPERCELL POTENTIAL.  IN ADDITION TO VERY LARGE HAIL THERE IS A
TORNADO THREAT WITH ANY SUPERCELL THAT FORMS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27030.


...HALES

Tornado Watches in Mississippi, 2011Tornado Watches in Louisiana, 2011Tornado Watches in Arkansas, 2011Every tornado watch in 2011

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.