WATCHES: Tornado Watch Number 285

WWUS20 KWNS 081945
SEL5
SPC WW 081945
KSZ000-MOZ000-090200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 285
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT TUE JUN 8 2010

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

EASTERN AND SOUTHERN KANSAS
WESTERN AND NORTHERN MISSOURI

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 5 MILES WEST NORTHWEST OF
CHILLICOTHE MISSOURI TO 65 MILES SOUTHEAST OF WICHITA KANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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...STORMS ARE EXPECTED TO DEVELOP SHORTLY AHEAD OF A COLD
FRONT THAT STRETCHED FROM NWRN MO SWWD INTO SOUTHWESTERN KANSAS. AIR
MASS HAS BECOME EXTREMELY UNSTABLE WITH MLCAPES APPROACHING 4000
J/KG. THIS INSTABILITY PLUS EFFECTIVE SHEAR AT 40 KT WOULD FAVOR
INTENSE SUPERCELLS. WHILE LARGE HAIL INITIALLY WILL BE THE GREATEST
THREAT...THE VERY MOIST BOUNDARY LAYER AND STRONG LOW LEVEL SHEAR
...ESPECIALLY NEAR OUTFLOW BOUNDARY LOCATED IN WRN MO/ERN KS...
WOULD SUPPORT TORNADOES. LATER THIS EVENING...THE STORMS ARE
EXPECTED TO CONSOLIDATE INTO A LINEAR MCS...WITH WIND DAMAGE
EVENTUALLY BECOMING THE GREATER THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 28025.

...IMY

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