

544 

WWUS20 KWNS 192207

SEL3

SPC WW 192207

KSZ000-NEZ000-200400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 353

NWS STORM PREDICTION CENTER NORMAN OK

505 PM CDT SAT JUN 19 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN KANSAS

       SOUTHERN NEBRASKA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 505 PM UNTIL

1100 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 65 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH OF MCCOOK

NEBRASKA TO 35 MILES SOUTH SOUTHEAST OF BEATRICE NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 351...WW 352...



DISCUSSION...STORMS ARE BEGINNING TO DEVELOP ALONG A BOUNDARY

LOCATED IN NRN KS...AND SHOULD INCREASE IN COVERAGE THROUGH THE

EVENING. EXTREMELY UNSTABLE AIR MASS AND 40 KT DEEP LAYER SHEAR WILL

BE FAVORABLE FOR INTENSE SUPERCELLS. VERY LARGE HAIL WILL BE THE

MAIN THREAT... THOUGH PRESENCE OF SURFACE BOUNDARY...VERY MOIST

BOUNDARY LAYER AND DEGREE OF INSTABILITY MAY SUPPORT A FEW

TORNADOES.



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

550. MEAN STORM MOTION VECTOR 26015.





...IMY

