Severe Thunderstorm Watch 503

Issued

Jun 25, 2000, 8:00 PM CDT (01:00 UTC)

Expired

Jun 26, 2000, 1:00 AM CDT

In force

5 hr

Issued by

the Storm Prediction Center

867 
WWUS9 KMKC 260037
SEL3  

SEL3  
MKC WW 260032
IAZ000-ILZ000-MOZ000-260600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 503
STORM PREDICTION CENTER NORMAN OK
732 PM CDT SUN JUN 25 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHEAST IOWA                               
   WEST CENTRAL ILLINOIS                           
   NORTHEAST AND CENTRAL MISSOURI                           

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 800 PM UNTIL
100 AM CDT.

HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF KNOB NOSTER
MISSOURI TO 45 MILES NORTH NORTHWEST OF BURLINGTON IOWA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 497.  WATCH NUMBER 497 WILL NOT BE IN EFFECT
AFTER 800 PM CDT.  CONTINUE...WW 495...WW 498...WW 499...WW
500...WW 501...WW 502...

DISCUSSION...LINE OF SEVERE THUNDERSTORMS CONTINUES TO SURGE SEWD
INTO NRN MO...WITH SLOWER EWD MOVEMENT INTO SERN IA.  AIR MASS
AHEAD OF THE LINE REMAINS MOIST WITH SURFACE DEW POINTS IN THE 70S
CONTRIBUTING TO MUCAPE OF 3000-5000 J/KG.  STRENGTHENING NWLY FLOW
ALOFT TO THE REAR OF THE LINE SUGGESTS THREAT FOR BOWING LINE
SEGMENTS AND DAMAGING WIND GUSTS WILL PERSIST NEXT SEVERAL HOURS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. 
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM MOTION
VECTOR 28035.


...WEISS

412,0901 382,0920 382,0941 412,0923

Severe Thunderstorm Watches in Missouri, 2000Severe Thunderstorm Watches in Iowa, 2000Severe Thunderstorm Watches in Illinois, 2000Every severe thunderstorm watch in 2000

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.