

872 

WWUS20 KWNS 192359

SEL6

SPC WW 192359

IAZ000-KSZ000-MOZ000-NEZ000-200700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 516

NWS STORM PREDICTION CENTER NORMAN OK

655 PM CDT SUN JUN 19 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN IOWA

       NORTHEAST KANSAS

       NORTHWEST AND NORTH CENTRAL MISSOURI

       SOUTHEAST NEBRASKA



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 655 PM UNTIL

200 AM CDT.



TORNADOES...HAIL TO 4 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 125 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES EAST NORTHEAST OF

SHENANDOAH IOWA TO 25 MILES SOUTH SOUTHEAST OF TOPEKA KANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 511...WW 513...WW

514...WW 515...



DISCUSSION...TSTM RECENTLY FORMED NEAR INTERSECTION OF DRY LINE AND

WARM FRONTAL SEGMENT E OF SLN MAY CONTINUE TO STRENGTHEN AS

LLJ/MOIST INFLOW INCREASE LATER THIS EVE.  OTHER WDLY SCTD STORMS

MAY FORM EWD ALONG THE SAME FRONT...OR N OF THE FRONT...EWD INTO NRN

MO...LATER THIS EVE.  WHILE CINH ASSOCIATED WITH NERN FRINGE OF

STRONG EML CAP MAY LIMIT OVERALL COVERAGE...THOSE STORMS THAT DO

MANAGE TO BECOME SUSTAINED SHOULD QUICKLY BECOME SUPERCELLS GIVEN

REGIONAL THERMODYNAMIC ENVIRONMENT /VERY STEEP MID LVL LAPSE RATES

ATOP FAIRLY DEEP AND VERY MOIST BOUNDARY LAYER/.  BACKED LOW LVL

FLOW INVOF WARM FRONT...AND MAINTENANCE OF BACKED NEAR-SFC FLOW INTO

TONIGHT AS LEE LOW CONTINUES TO DEEPEN IN WRN KS...FURTHER SUGGEST A

THREAT FOR TORNADOES.



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

SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 22030.





...CORFIDI

