

551 

WWUS20 KWNS 231757

SEL8

SPC WW 231757

ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-240100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 58

NWS STORM PREDICTION CENTER NORMAN OK

100 PM CDT SAT MAR 23 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN ALABAMA

       FLORIDA PANHANDLE

       SOUTHWEST GEORGIA

       SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 100 PM UNTIL

800 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH

SOUTHWEST OF MERIDIAN MISSISSIPPI TO 30 MILES SOUTH OF VALDOSTA

GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 57...



DISCUSSION...THUNDERSTORMS ARE INTENSIFYING IN A REGION OF WEAK LOW

LEVEL WARM ADVECTION ALONG THE CENTRAL GULF COAST.  SLOW

DESTABILIZATION AND STEEP MID LEVEL LAPSE RATES...COUPLED WITH

FAVORABLE DEEP LAYER VERTICAL SHEAR...WILL PROMOTE A RISK OF

ROTATING STORMS CAPABLE OF LARGE HAIL AND PERHAPS DAMAGING WINDS.



AVIATION...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 450. MEAN STORM

MOTION VECTOR 26030.





...HART



935 

WWUS20 KWNS 231757

SEL8

SPC WW 231757

ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-240100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 58

NWS STORM PREDICTION CENTER NORMAN OK

100 PM CDT SAT MAR 23 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN ALABAMA

       FLORIDA PANHANDLE

       SOUTHWEST GEORGIA

       SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 100 PM UNTIL

800 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH

SOUTHWEST OF MERIDIAN MISSISSIPPI TO 30 MILES SOUTH OF VALDOSTA

GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 57...



DISCUSSION...THUNDERSTORMS ARE INTENSIFYING IN A REGION OF WEAK LOW

LEVEL WARM ADVECTION ALONG THE CENTRAL GULF COAST.  SLOW

DESTABILIZATION AND STEEP MID LEVEL LAPSE RATES...COUPLED WITH

FAVORABLE DEEP LAYER VERTICAL SHEAR...WILL PROMOTE A RISK OF

ROTATING STORMS CAPABLE OF LARGE HAIL AND PERHAPS DAMAGING WINDS.



AVIATION...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 450. MEAN STORM

MOTION VECTOR 26030.





...HART

