WATCHES: Severe Thunderstorm Watch Number 315

WWUS20 KWNS 140154
SEL5
SPC WW 140154
TXZ000-140900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 315
NWS STORM PREDICTION CENTER NORMAN OK
855 PM CDT TUE MAY 13 2008

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

CENTRAL TEXAS

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 855 PM
UNTIL 400 AM CDT.

HAIL TO 2.5 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 145
STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES WEST
SOUTHWEST OF TEMPLE TEXAS TO 35 MILES NORTH NORTHEAST OF MINERAL
WELLS TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 311...WW 312...WW 314...

DISCUSSION...MCS IS EXPECTED TO EVOLVE AS STORMS MOVE ENEWD ACROSS
THE TX HILL COUNTRY THIS EVENING/OVERNIGHT. IN ADDITION...STORMS
WILL LIKELY CONTINUE DEVELOPING OVER PORTIONS OF WRN TX AS LLJ
RESPONDS TO APPROACHING UPPER LOW OVER THE SRN ROCKIES. AIR MASS
ACROSS THE REGION WILL REMAIN MODERATELY UNSTABLE UNDER STEEP MID
LEVEL LAPSE RATES AND WITHIN FEED OF RICH GULF MOISTURE. LARGE HAIL
WILL BE PRIMARY SEVERE THREAT AS SHEAR REMAINS SUPPORTIVE OF
SPLITTING SUPERCELLS. SHOULD MCS BECOME MORE LINEAR OVER CENTRAL
TX...DAMAGING WIND THREAT WOULD INCREASE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 26035.

...EVANS

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