TORNADO WATCH NUMBER 245
STORM PREDICTION CENTER NORMAN OK
142 PM CDT MON MAY 8 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEASTERN IOWA
WEST CENTRAL AND NORTHERN ILLINOIS
NORTHERN MISSOURI
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 800
PM CDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DAMAGING TORNADOES...LARGE 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 ALONG AND 90 STATUTE MILES EAST AND WEST
OF A LINE FROM 70 MILES SOUTH OF KIRKSVILLE MISSOURI TO 25 MILES
NORTHEAST OF ROCKFORD ILLINOIS.
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...THUNDERSTORMS WILL INTENSIFY ALONG APPROACHING FRONT
AND AHEAD OF UPPER TROUGH AS THEY APPROACH WARM MOIST AIR MASS.
HIGH INSTABILITY IS PRESENT ACROSS REGION WITH MUCAPES FROM 3500 TO
5000 J/KG. 40 TO 50 KT MID LEVEL FLOW WILL RESULT IN SUFFICIENT
DEEP LAYER SHEAR FOR A FEW STRONG TORNADOES AND SCATTERED LARGE
HAIL AND WIND EVENTS.
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 500.
MEAN STORM MOTION VECTOR 24035.
...ROGASH
