

695 

WWUS20 KWNS 182017 CCA

SEL0

SPC WW 182017 CCA

OKZ000-TXZ000-190300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 80...CORRECTED

NWS STORM PREDICTION CENTER NORMAN OK

315 PM CDT SUN MAR 18 2012



CORRECTED FOR TYPO IN STATE LISTING



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR WESTERN OKLAHOMA AND THE EASTERN OKLAHOMA PANHANDLE

       PARTS OF NORTHWEST TEXAS INTO THE EASTERN TEXAS PANHANDLE



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 315 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 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 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF

GAGE OKLAHOMA TO 45 MILES WEST SOUTHWEST OF ABILENE TEXAS.  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.



DISCUSSION...VISIBLE SATELLITE IMAGERY SHOWS DEEPENING CUMULUS ALONG

AND E OF THE DRYLINE FROM BIG SPRING TX NWD THROUGH THE CENTRAL/ERN

TX PANHANDLE...WITH THE MOST LIKELY AREA FOR STORM DEVELOPMENT

BETWEEN CHILDRESS AND BIG SPRING BY 21Z.  THE STORM ENVIRONMENT IS

BECOMING MORE FAVORABLE FOR SUPERCELLS AS BOTH DEEP-LAYER AND

LOW-LEVEL SHEAR INCREASE IN CONJUNCTION WITH DAYTIME HEATING/

DESTABILIZATION.  VERY LARGE HAIL WILL BE POSSIBLE WITH ANY OF THE

SUSTAINED SUPERCELLS THROUGH THE EVENING...AND A FEW TORNADOES WILL

ALSO BE POSSIBLE GIVEN TEMPERATURE-DEWPOINT SPREADS GENERALLY AOB 20

F AND INCREASING EFFECTIVE SRH THROUGH THE EVENING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24030.





...THOMPSON



163 

WWUS20 KWNS 182017

SEL0

SPC WW 182017

OKZ000-TXZ000-190300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 80

NWS STORM PREDICTION CENTER NORMAN OK

315 PM CDT SUN MAR 18 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR WESTERN OKLAHOMA AND THE EASTERN OKLAHOMA PANHANDLE

       PARTS OF WEST CENTRAL/NORTHWEST INTO THE EASTERN TEXAS

PANHANDLE

PANHANDLE



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 315 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 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 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF

GAGE OKLAHOMA TO 45 MILES WEST SOUTHWEST OF ABILENE TEXAS.  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.



DISCUSSION...VISIBLE SATELLITE IMAGERY SHOWS DEEPENING CUMULUS ALONG

AND E OF THE DRYLINE FROM BIG SPRING TX NWD THROUGH THE CENTRAL/ERN

TX PANHANDLE...WITH THE MOST LIKELY AREA FOR STORM DEVELOPMENT

BETWEEN CHILDRESS AND BIG SPRING BY 21Z.  THE STORM ENVIRONMENT IS

BECOMING MORE FAVORABLE FOR SUPERCELLS AS BOTH DEEP-LAYER AND

LOW-LEVEL SHEAR INCREASE IN CONJUNCTION WITH DAYTIME HEATING/

DESTABILIZATION.  VERY LARGE HAIL WILL BE POSSIBLE WITH ANY OF THE

SUSTAINED SUPERCELLS THROUGH THE EVENING...AND A FEW TORNADOES WILL

ALSO BE POSSIBLE GIVEN TEMPERATURE-DEWPOINT SPREADS GENERALLY AOB 20

F AND INCREASING EFFECTIVE SRH THROUGH THE EVENING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24030.





...THOMPSON

