

000 

WWUS20 KWNS 242201

SEL7

SPC WW 242201

KSZ000-MOZ000-NEZ000-250500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 747

NWS STORM PREDICTION CENTER NORMAN OK

500 PM CDT THU JUL 24 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEAST KANSAS

       NORTHWEST MISSOURI

       EXTREME SOUTHEAST NEBRASKA



EFFECTIVE THIS THURSDAY AFTERNOON FROM 500 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 2 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 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTHWEST OF

BEATRICE NEBRASKA TO 50 MILES SOUTH OF CHILLICOTHE MISSOURI.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 744...WW 745...WW 746...



DISCUSSION...RAPID AND ROBUST THUNDERSTORM DEVELOPMENT APPEARS

POSSIBLE THROUGH THIS EVENING ALONG RESIDUAL OUTFLOW BOUNDARY

EXTENDING FROM SERN NEB ACROSS NERN KS AND INTO WRN MO. AIR MASS

ALONG AND S OF THIS BOUNDARY HAS BECOME VERY HOT WITH TEMPERATURES

OF 90-100 F. WHEN COMBINED WITH DEWPOINTS IN THE UPPER 60S TO

LOWER/MID 70S... ENVIRONMENT IS MODERATE TO STRONGLY UNSTABLE WITH

MLCAPES OF 2000-3000 J/KG. MOREOVER...CURRENT FAIRBURY NEB PROFILER

AND KANSAS CITY VWP INDICATE MODERATELY STRONG VERTICAL SHEAR /BOTH

IN THE LOW LEVELS AND THROUGH A DEEPER LAYER/...SUGGESTING THE

POTENTIAL FOR SUPERCELLS. WHILE LARGE HAIL AND DAMAGING WINDS WOULD

BE THE PRIMARY SEVERE THREATS...A TORNADO OR TWO WILL BE

POSSIBLE...ESPECIALLY WITH ANY DISCRETE CELLS ABLE TO ANCHOR ON

RESIDUAL OUTFLOW BOUNDARY AND TRACK PREFERENTIALLY SSEWD WITHIN

STRONG LOW LEVEL SHEAR AND HIGH CAPE ENVIRONMENT INTO THIS EVENING.



AVIATION...TORNADOES AND 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 32015.





...CARBIN

