WATCHES: Tornado Watch Number 162

WWUS20 KWNS 221636
SEL2
SPC WW 221636
KSZ000-MOZ000-NEZ000-230000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 162
NWS STORM PREDICTION CENTER NORMAN OK
1140 AM CDT SUN APR 22 2007

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

NORTHEAST KANSAS
EXTREME NORTHWEST MISSOURI
SOUTHEAST NEBRASKA

EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1140 AM UNTIL 700
PM 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 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF COLUMBUS
NEBRASKA TO 25 MILES EAST OF MANHATTAN KANSAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU2).

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...ENVIRONMENT EXPECTED TO BECOME INCREASINGLY SUPPORTIVE
OF RELATIVELY LOW-TOPPED ROTATING STORMS ACROSS FROM SOUTHEAST
NEB/NORTHEAST KS EAST TO EXTREME NORTHWEST MO THROUGH THE AFTERNOON
AS DEEP-LAYER CYCLONE TRANSITIONS ENEWD ACROSS THE REGION. POCKETS
OF STRONGER SURFACE HEATING WITHIN SYSTEM DRY SLOT WILL CONTRIBUTE
TO CONTINUED DESTABILIZATION AND INCREASING STORM COVERAGE AND
INTENSITY. IN ADDITION TO COOLING ALOFT AND ADEQUATE DEEP-LAYER
SHEAR FOR HAIL STORMS...ENHANCED LOW LEVEL SHEAR NEAR THE LOW...AND
UPDRAFT STRETCHING IN AREAS WITH GREATER LOW-LEVEL CAPE SHOULD LEAD
TO A GREATER CHANCE FOR SOME TORNADIC CELLS.

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
400. MEAN STORM MOTION VECTOR 20035.

..CARBIN/CORFIDI

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