Tornado Watch 444

Issued

Jun 15, 1997, 6:30 PM CDT (23:30 UTC)

Expired

Jun 16, 1997, 1:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

The Des Moines radar (KDMX), 96 km from the middle of the area, began a volume at 23:31 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.

739 
WWUS9 KMKC 152256
SEL4  
MKC WW 152256
IAZ000-ILZ000-160600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 444
STORM PREDICTION CENTER NORMAN OK
556 PM CDT SUN JUN 15 1997

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

   SOUTHERN AND CENTRAL IOWA                               
   NORTHERN ILLINOIS                           

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 630 PM UNTIL
100 AM 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 135 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES EAST OF LAMONI IOWA TO DUBUQUE 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...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 439.  WATCH NUMBER 439 WILL NOT BE IN
EFFECT AFTER 630 PM CDT.  CONTINUE...WW 440...WW 441...WW 442...WW
443...

DISCUSSION...LINE OF THUNDERSTORMS INCREASING AS THEY DEVELOP IN
VERY UNSTABLE AIR WHERE CAPES ABOVE 3000 J/KG. APPROACHING SURFACE
FRONT AND UPPER LEVEL VORT AXIS WILL MAINTAIN STRONG LIFT OVER
REGION WITH WIND PROFILE FAVORING A FEW TORNADIC SUPERCELLS.


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
520.  MEAN STORM MOTION VECTOR 26040.


...ROGASH

403,0954 422,0932 422,0880 403,0903

Tornado Watches in Iowa, 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.