

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

