Tornado Watch 10

Issued

Feb 1, 2011, 1:03 PM CST (19:03 UTC)

Expired

Feb 1, 2011, 7:45 PM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 19:06 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 69Feb 1, 12:00 PM CST
• Mesoscale Discussion 73Feb 1, 3:44 PM CST
• Mesoscale Discussion 75Feb 1, 5:54 PM CST

900 
WWUS20 KWNS 011906
SEL0
SPC WW 011906
ALZ000-FLZ000-MSZ000-CWZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 10
NWS STORM PREDICTION CENTER NORMAN OK
105 PM CST TUE FEB 1 2011

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

       SOUTHWEST ALABAMA
       THE WESTERN FLORIDA PANHANDLE
       PARTS OF EAST CENTRAL AND SOUTHEAST MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 105 PM UNTIL
800 PM CST.

TORNADOES...HAIL TO 1 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 85 MILES NORTHWEST OF
EVERGREEN ALABAMA TO 40 MILES SOUTH SOUTHEAST OF GULFPORT
MISSISSIPPI.  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 9...

DISCUSSION...A BROKEN SQUALL LINE WILL CONTINUE EWD ACROSS SE LA AND
SRN MS THROUGH THE AFTERNOON...REACHING SW AL AROUND 23Z.  OTHER
CONVECTION IS DEVELOPING IN ADVANCE OF THE LINE FROM SE LA INTO SE
MS ALONG THE LLJ AND MOIST AXIS.  A SPECIAL 18Z SOUNDING FROM LIX
SHOWED THAT THE PRIMARY INSTABILITY IS STILL BASED JUST ABOVE THE
SURFACE...BUT VERY STRONG LOW-LEVEL SHEAR IS STILL SUPPORTIVE OF
DAMAGING WINDS AND A COUPLE OF TORNADOES...ESPECIALLY GIVEN THE MORE
CELLULAR CONVECTIVE MODES NOW OBSERVED.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 24045.


...THOMPSON

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