Tornado Watch 130

Issued

Apr 11, 2011, 4:05 PM CDT (21:05 UTC)

Expired

Apr 11, 2011, 10:06 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Jackson/Brandon,MS radar (KDGX), 113 km from the middle of the area, began a volume at 21:06 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

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 415Apr 11, 3:56 PM CDT
• Mesoscale Discussion 417Apr 11, 5:53 PM CDT
• Mesoscale Discussion 418Apr 11, 6:42 PM CDT

340 
WWUS20 KWNS 112106
SEL0
SPC WW 112106
ALZ000-MSZ000-120400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 130
NWS STORM PREDICTION CENTER NORMAN OK
405 PM CDT MON APR 11 2011

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

       MUCH OF WESTERN AND CENTRAL ALABAMA
       PARTS OF SOUTHERN AND EASTERN MISSISSIPPI

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
PINE BELT MISSISSIPPI TO 50 MILES NORTH NORTHWEST OF BIRMINGHAM
ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 128...WW 129...

DISCUSSION...INCREASINGLY UNSTABLE AIR MASS SPREADING NEWD INTO WRN
AL AHEAD INSTABILITY LINE ACROSS CENTRAL MS.  WITH VERY STRONG SHEAR
PROFILES IN PLACE AND APPROACHING STRONG UPPER TROUGH...SEVERE
THUNDERSTORMS INCLUDING SUPERCELLS ARE EXPECTED TO DEVELOP/INCREASE
ALONG AND AHEAD OF INSTABILITY LINE.  DISCRETE SUPERCELLS ARE LIKELY
MOVING FROM SRN MS INTO AL WHICH WOULD INCREASE POTENTIAL FOR
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.


...HALES

Tornado Watches in Mississippi, 2011Tornado Watches in Alabama, 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.