WATCHES: Severe Thunderstorm Watch Number 492

WWUS20 KWNS 152019
SEL2
SPC WW 152019
KSZ000-OKZ000-TXZ000-160400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 492
NWS STORM PREDICTION CENTER NORMAN OK
320 PM CDT THU AUG 15 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTH-CENTRAL KANSAS
WESTERN OKLAHOMA
NORTHWEST TEXAS

* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 320 PM UNTIL
1100 PM CDT.

* PRIMARY THREATS INCLUDE...
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF
MEDICINE LODGE KANSAS TO 75 MILES SOUTH SOUTHEAST OF CHILDRESS
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

DISCUSSION...ISOLATED SEVERE STORMS HAVE DEVELOPED WITHIN
INCREASINGLY UNSTABLE AIRMASS FROM NW TX TO SRN KS THIS AFTERNOON.
REGION LIES WITHIN WEAK MID-LEVEL HEIGHT FALLS AND EXPECT CONTINUED
BACKGROUND ASCENT TO PROMOTE ADDITIONAL STORMS GIVEN GRADUAL
AMPLIFICATION OF THE LARGE SCALE TROUGH ACROSS THE GREAT PLAINS.
MID-LEVEL SPEED MAX SPREADING SEWD FROM WRN KS WILL ALSO AID IN
INTENSIFICATION OF DEEP-LAYER SHEAR ACROSS THE REGION THROUGH THE
EVENING SO THAT STORMS MAY BECOME BETTER ORGANIZED AND PERSISTENT
WITH TIME. MODEST LAPSE RATES AND SHEAR WILL SUPPORT MUTLICELLS AND
SUPERCELLS CAPABLE OF PRODUCING LARGE HAIL AND LOCALLY DAMAGING WIND
GUSTS. IT REMAINS POSSIBLE THAT A MORE ORGANIZED MCS WILL EVOLVE
ACROSS WRN KS THROUGH THIS EVENING WITH MORE WIDESPREAD WIND AND
HAIL POTENTIAL SPREADING INTO PARTS OF THE TX PNHDL AND WRN OK
THROUGH THE LATE EVENING.

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 500. MEAN STORM
MOTION VECTOR 34020.


...CARBIN

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