Tornado Watch 42

Issued

Mar 8, 2011, 1:08 PM CST (19:08 UTC)

Expired

Mar 8, 2011, 10:23 PM CST

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

Two or more tornadoes

60%

One or more EF2 to EF5 tornadoes

40%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

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

90%

• Mesoscale Discussion 204Mar 8, 9:52 AM CST
• Mesoscale Discussion 205Mar 8, 12:54 PM CST
• Mesoscale Discussion 207Mar 8, 5:46 PM CST
• Mesoscale Discussion 209Mar 8, 9:40 PM CST

078 
WWUS20 KWNS 081909
SEL2
SPC WW 081909
LAZ000-MSZ000-CWZ000-090200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 42
NWS STORM PREDICTION CENTER NORMAN OK
110 PM CST TUE MAR 8 2011

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

       LARGE PART OF CENTRAL AND SOUTHERN LOUISIANA
       LARGE PART OF SOUTHERN MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 110 PM UNTIL
800 PM CST.

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 85 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 30 MILES WEST SOUTHWEST OF
FORT POLK LOUISIANA TO 10 MILES EAST OF PINE BELT MISSISSIPPI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

DISCUSSION...VERY MOIST/UNSTABLE AIR MASS SPREADING INLAND LWR MS
VALLEY WHERE SHEAR PROFILES ALREADY FAVORABLE FOR SUPERCELLS.
EXPECT THUNDERSTORMS TO DEVELOP AND INTENSIFY THRU THE AFTERNOON AS
UPPER TROUGH AND STRONG JET APPROACH THE REGION.  SUPERCELLS
INCLUDING TORNADOES ARE LIKELY WITH THE POTENTIAL FOR A STRONG
TORNADO BY LATER THIS AFTERNOON AND EVENING.

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 22035.


...HALES

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