Tornado Watch 45

Issued

Mar 9, 2011, 2:39 AM CST (08:39 UTC)

Expired

Mar 9, 2011, 8:00 AM CST

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

60 kt

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

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 210Mar 9, 1:28 AM CST
• Mesoscale Discussion 211Mar 9, 4:39 AM CST
• Mesoscale Discussion 212Mar 9, 6:28 AM CST

559 
WWUS20 KWNS 090840
SEL5  
SPC WW 090840
ALZ000-LAZ000-MSZ000-091400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 45
NWS STORM PREDICTION CENTER NORMAN OK
240 AM CST WED MAR 9 2011

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

       SOUTHWEST ALABAMA
       SOUTHEAST LOUISIANA
       SOUTHERN MISSISSIPPI

EFFECTIVE THIS WEDNESDAY MORNING FROM 240 AM UNTIL 800 AM 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH SOUTHEAST OF MC
COMB MISSISSIPPI TO 55 MILES NORTH NORTHEAST OF PINE BELT
MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 44...

DISCUSSION...CLUSTERS/LINES OF STRONG-SEVERE THUNDERSTORMS WILL
CONTINUE TO TRACK EASTWARD ACROSS THE WATCH AREA THROUGH THE
MORNING.  SHEAR PROFILES ARE QUITE STRONG AND FAVOR SUPERCELL STORMS
CAPABLE OF DAMAGING WINDS AND TORNADOES.  IF ANY DISCRETE CONVECTION
CAN FORM IN THE WARM SECTOR...THEY WOULD POSE THE GREATEST TORNADO
THREAT.

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 500.
MEAN STORM MOTION VECTOR 27030.


...HART

Tornado Watches in Mississippi, 2011Tornado Watches in Louisiana, 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.