Tornado Watch 160

Issued

Apr 20, 1997, 3:45 PM CDT (20:45 UTC)

Expired

Apr 20, 1997, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

264 
WWUS9 KMKC 202030
SEL0  
MKC WW 202030
MOZ000-OKZ000-ARZ000-210300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 160
STORM PREDICTION CENTER NORMAN OK
330 PM CDT SUN APR 20 1997

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

   PARTS OF SOUTHWEST MISSOURI                           
   PARTS OF EASTERN OKLAHOMA                           
   PARTS OF NORTHWEST ARKANSAS                           

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 345 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 1 3/4 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 5 MILES WEST SOUTHWEST OF PAGE OKLAHOMA TO 45 MILES
NORTH NORTHEAST OF SPRINGFIELD MISSOURI.

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...LINE OF THUNDERSTORMS WILL INCREASE ALONG APPROACHING
COLD FRONT. AIR MASS VERY UNSTABLE OVER REGION WITH CAPES FROM 2000
TO 3000 J/KG. 40 KT NWLY FLOW ALOFT COMBINED WITH INCREASING
SOUTHERLY FLOW NEAR SURFACE INDICATES SHEAR SUFFICIENT FOR
SUPERCELLS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO1 3/4 INCHES.  EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450.  MEAN STORM MOTION VECTOR 25040.


...ROGASH

343,0961 374,0943 374,0913 343,0931

Tornado Watches in Missouri, 1997Tornado Watches in Arkansas, 1997Tornado Watches in Oklahoma, 1997Every tornado watch in 1997

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.