WATCHES: Tornado Watch Number 87

WWUS20 KWNS 240359
SEL7
SPC WW 240359
IAZ000-KSZ000-MOZ000-NEZ000-240900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 87
NWS STORM PREDICTION CENTER NORMAN OK
1100 PM CDT FRI APR 23 2010

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

SOUTHWEST IOWA
FAR NORTHEAST KANSAS
NORTHEAST MISSOURI
EASTERN NEBRASKA

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1100 PM
UNTIL 400 AM CDT.

TORNADOES...HAIL TO 1.5 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF TEKAMAH
NEBRASKA TO 40 MILES EAST SOUTHEAST OF KANSAS CITY 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 82...WW 83...WW 84...WW
85...WW 86...

DISCUSSION...SUSTAINED STORMS/POSSIBLE SUPERCELLS EXPECTED TO
CONTINUE FORMING IN CONFLUENCE ZONE S OF NW/SE WARM FRONT ACROSS SW
IA/N CNTRL MO... WITH ACTIVITY POSSIBLY ENHANCED BY SHORTWAVE
IMPULSE NOW MOVING NNE ACROSS ERN KS. ENHANCED LOW LVL DIRECTIONAL
SHEAR AND MOISTURE AXIS NEAR WARM FRONT...IN ADDITION TO 50 KT SLY
LLJ...SUGGEST POTENTIAL FOR TORNADOES...SVR HAIL AND WIND AS STORMS
CROSS THE BOUNDARY.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 19035.

...CORFIDI

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