Severe Thunderstorm Warning 9, NWS Chicago, IL

Issued

Apr 5, 1997, 4:59 PM CST (22:59 UTC)

Expired

Apr 5, 1997, 5:30 PM CST

In force

31 min

Issued by

NWS Chicago, IL

Area

Whole counties

County DuPage County, IL

The Chicago radar (KLOT), 28 km from the middle of the area, began a volume at 23:00 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

000 
TTAA00 KCHI 052300 RRA
SVRCHI
ILC053-075-007-037-043-063-089-091-093-111-197-052330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
459 PM CST SAT APR 5 1997
 
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL ILLINOIS
 
   ...FORD COUNTY...WESTERN IROQUOIS COUNTY
 
IN NORTH CENTRAL ILLINOIS
 
   ...BOONE COUNTY...EASTERN DE KALB COUNTY
 
IN NORTHEAST ILLINOIS
 
   ...DU PAGE COUNTY...EASTERN GRUNDY COUNTY...KANE COUNTY
   ...WESTERN KANKAKEE COUNTY...KENDALL COUNTY...MCHENRY COUNTY
   ...WESTERN WILL COUNTY
 
AT 500 PM CST RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM JUST
EAST OF ROCKFORD...TO NEAR YORKVILLE AND MORRIS...TO ABOUT 5 MILES WEST
OF PAXTON.
 
THE LINE IS MOVING EAST/NORTHEAST AT 45 TO 50 MPH AND WILL BE EFFECTING
BELVIDERE...WOODSTOCK...ELGIN...AURORA...JOLI0ET...AND KANKAKEE BY 530 PM
CST.
 
 
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS.  GO INSIDE
A STURDY BUILDING AND STAY AWAY FROM WINDOWS!

In the hours before

ILZ003>006-008-010>014-019>023-032-033-039-520>523-INZ001>005-
010>016-019-020-520>522-LMZ530-061000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
1108 AM CST (1208 PM EST) SAT APR 5 1997

FOR NORTH CENTRAL AND NORTHEAST ILLINOIS AND NORTHWEST AND NORTH
CENTRAL INDIANA

THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON
AND CONTINUE INTO THIS EVENING. HOWEVER THE THUNDERSTORMS ARE NOT
EXPECTED TO BECOME SEVERE.

A WEAK COLD FRONT IS EXPECTED TO SWEEP THROUGH THE AREA THIS EVENING
BRINGING THE THREAT OF THUNDERSTORMS TO THE AREA. CONSIDERABLE
CLOUDINESS AHEAD OF THE FRONT SHOULD INHIBIT HEATING THIS AFTERNOON SO
THE THUNDERSTORMS SHOULD REMAIN BELOW THE SEVERE CATERGORY IN SPITE OF
ABUNDANT GULF MOISTURE AND A VIGOROUS UPPER LEVEL DISTURBANCE MOVING
THROUGH THE AREA.

ALM

ILZ003>006-008-010>014-019>023-032-033-039-520>523-INZ001>005-
010>016-019-020-520>522-LMZ530-061000-

HAZARDOUS WEATHER OUTLOOK/UPDATED
NATIONAL WEATHER SERVICE CHICAGO IL
2 10 PM CST (1208 PM EST) SAT APR 5 1997

FOR NORTH CENTRAL AND NORTHEAST ILLINOIS AND NORTHWEST AND NORTH
CENTRAL INDIANA

...SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA THIS EVENING...

A WEAK COLD FRONT IS EXPECTED TO SWEEP THROUGH THE AREA THIS EVENING
BRINGING THE THREAT OF SEVERE THUNDERSTORMS TO THE AREA.

AT 2 PM CST THIS AFTERNOON A LINE OF SEVERE THUNDERSTORMS HAD DEVELOPED
IN EXTREME WEST CENTRAL ILLINOIS NEAR THE MISSISSIPPI RIVER AND EXTENDED
SOUTHWARD TO NEAR ST LOUIS. THIS BAND OF THUNDERSTORMS WERE MOVING
NORTHEAST AROUND 40 MPH AND SHOULD MOVE INTO NORTHEAST AND
NORTH CENTAL ILLINOIS EARLY THIS EVENING THEN INTO NORTHWEST AND
NORTH CENTRAL INDIANA LATER THIS EVENING.

ALM

Severe Thunderstorm Warnings in Illinois, 1997Every severe thunderstorm warning in 1997

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.