Tornado Watch 577

Issued

Jun 14, 1998, 2:00 PM CDT (19:00 UTC)

Expired

Jun 14, 1998, 8:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

613 
WWUS9 KMKC 141830
SEL7  
MKC WW 141830
IAZ000-ILZ000-MOZ000-150100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 577
STORM PREDICTION CENTER NORMAN OK
130 PM CDT SUN JUN 14 1998

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

   CENTRAL AND EASTERN IOWA                               
   NORTHWEST AND WEST CENTRAL ILLINOIS                           
   NORTHEAST MISSOURI                           

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 800
PM CDT.

TORNADOES...HAIL TO 1 3/4 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES NORTHWEST OF CEDAR RAPIDS IOWA TO 50 MILES
SOUTH SOUTHEAST OF BURLINGTON IOWA.

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 576...

DISCUSSION...BAND OF LOW TOPPED THUNDERSTORMS DEVELOPING ALONG
OCCLUSION EXPECTED TO INCREASE NEXT FEW HOURS AS AMS DESTABLIZES
AHEAD OF UPPER VORTICITY MAXIMUM MOVING EASTWARD FROM SOUTHWEST
IOWA.  SMALL ISOLATED SUPERCELLS WITH POTENTIAL FOR TORNADOES
EXPECTED DURING AFTERNOON AND EARLY EVENING HOURS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 3/4 INCHES.  EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450.  MEAN STORM MOTION VECTOR 22030.


...JOHNS

422,0904 400,0891 400,0921 422,0935

Tornado Watches in Iowa, 1998Tornado Watches in Illinois, 1998Tornado Watches in Missouri, 1998Every tornado watch in 1998

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.