Tornado Watch 683

Issued

Jun 27, 1998, 4:00 PM CDT (21:00 UTC)

Expired

Jun 27, 1998, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

241 
WWUS9 KMKC 272030
SEL3  
MKC WW 272030
SDZ000-MNZ000-IAZ000-NEZ000-WIZ000-280300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 683
STORM PREDICTION CENTER NORMAN OK
330 PM CDT SAT JUN 27 1998

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

   EXTREME SOUTHEAST SOUTH DAKOTA                       
   CENTRAL AND SOUTHERN MINNESOTA                          
   NORTHERN AND WESTERN IOWA                               
   EXTREME NORTHEAST NEBRASKA                           
   EXTREME WESTERN WISCONSIN                          

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 400 PM UNTIL
1000 PM CDT.

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

THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES SOUTHEAST OF SIOUX CITY IOWA TO 55 MILES
NORTHWEST OF MINNEAPOLIS MINNESOTA.

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 682...

DISCUSSION...THREAT FOR SUPERCELLS AND A FEW TORNADOES WILL
INCREASE THIS AFTERNOON AND EVENING AHEAD OF COLD FRONT AND
ESPECIALLY ALONG WARM FRONT LOCATED ALONG THE MN/IA BORDER. LARGE
HAIL AND DAMAGING WINDS ARE ALSO LIKELY GIVEN EXTREME INSTABILITY.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. 
MEAN STORM MOTION VECTOR 25030.


...VESCIO

415,0973 452,0955 452,0920 415,0935

Tornado Watches in Minnesota, 1998Tornado Watches in Iowa, 1998Tornado Watches in Nebraska, 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.