Tornado Watch 295

Issued

May 18, 1997, 2:30 PM CDT (19:30 UTC)

Expired

May 18, 1997, 9:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

The Des Moines radar (KDMX), 86 km from the middle of the area, began a volume at 19:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
TTAA00 KCHI 181909
MKC WW 181900
IAZ000-WIZ000-190200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 295  CORRECTION TO INCLUDE A EXTREME NW IL
STORM PREDICTION CENTER NORMAN OK
200 PM CDT SUN MAY 18 1997

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

   IOWA
   SOUTHERN WISCONSIN
   EXTREME NORTHWEST ILLINOIS
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 900
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 105 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES EAST OF LAMONI IOWA TO 50 MILES WEST
NORTHWEST OF LONEROCK WISCONSIN.

OTHER WATCH INFORMATION...  CONTINUE...WW 294...

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...THUNDERSTORMS WILL DEVELOP ALONG FRONTAL BOUNDARIES AS
AIR MASS VERY UNSTABLE PER 2500 TO 4000 J/KG CAPES. VEERING WIND
PROFILE WITH 50 KT MID LEVEL FLOW INDICATES POTENTIAL FOR
SUPERCELLS...DAMAGING WINDS AND LARGE HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 3/4 INCHES.  EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500.  MEAN STORM MOTION VECTOR 25045.
...ROGASH

;403,0950 433,0931 433,0885 403,0910;

Tornado Watches in Iowa, 1997Tornado Watches in Wisconsin, 1997Tornado Watches in Illinois, 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; radar from the NEXRAD Level II archive.