Alert archive / Illinois / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 43, NWS Chicago, IL

May 18, 2004Iroquois County, Illinois; Benton County, Indiana

NWS Chicago, IL issued this severe thunderstorm warning at May 18, 2004, 1:07 PM CDT for Iroquois County, Illinois; Benton County, Indiana. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 18, 2004, 1:07 PM CDT (18:07 UTC)
Expired
May 18, 2004, 1:45 PM CDT
In force
38 min
Issued by
NWS Chicago, IL
Area
Counties, with a storm outline in the text

Counties Iroquois County, IL, Benton County, IN

The radar

The Chicago radar (KLOT), 112 km from the middle of the area, began a volume at 18:08 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 18, 12:00 PM CDTSevere Thunderstorm WatchSPC7 hr
May 18, 12:45 PM CDTSevere Thunderstorm WatchSPC6 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 12:45 PM CDT, 22 minutes earlier.

Area forecast discussion, May 18, 12:45 PM CDT, 22 minutes before
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Hazardous weather outlook, May 18, 12:30 PM CDT, 37 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
1230 PM CDT TUE MAY 18 2004

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-
019-191100-
BENTON-BOONE-COOK-DE KALB-DU PAGE-FORD-GRUNDY-IROQUOIS-JASPER-
KANE-KANKAKEE-KENDALL-LA SALLE-LAKE-LAKE IN-LEE-LIVINGSTON-
MCHENRY-NEWTON-OGLE-PORTER-WILL-WINNEBAGO-
1230 PM CDT TUE MAY 18 2004

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH
CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 700 PM CDT FOR
FORD...IROQUOIS...AND LIVINGSTON COUNTIES IN ILLINOIS ALONG WITH
BENTON....JASPER...AND NEWTON COUNTIES IN NORTHWEST INDIANA.
SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON
ACROSS THE WATCH AREA. SOME OF THESE STORMS WILL BE CAPABLE OF
PRODUCING LARGE HAIL AND DAMAGING WINDS ACROSS THIS AREA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AND HEAVY RAIN ALL
AREAS LATE TOMORROW AFTERNOON THROUGH FRIDAY NIGHT.

TODAYS COLD FRONT WILL MOVE BACK AS A WARM FRONT LATE TOMORROW AND
THEN WOBBLE AROUND THROUGH FRIDAY NIGHT. A VERY UNSTABLE AND HUMID
AIRMASS ALONG AND SOUTH OF THE FRONT WILL LEAD TO THE POSSIBILITY OF
SEVERAL PERIODS OF SEVERE STORMS AND HEAVY RAINS BEGINNING LATE
TOMORROW AND THEN CONTINUING INTO FRIDAY NIGHT. MORE STORMS POSSIBLE
ON SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO THIS EVENING.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE)

LMZ740>746-766-191100-
WINTHROP HARBOR TO WILMETTE HARBOR-WILMETTE HARBOR TO NORTHERLY
ISLAND-NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-MICHIGAN CITY TO
NEW BUFFALO-LAKE MICHIGAN-
1230 PM CDT TUE MAY 18 2004

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS
AND INDIANA WATERS OF LAKE MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE POSSIBLE LATE TOMORROW INTO FRIDAY NIGHT.  MORE
STORMS POSSIBLE SUNDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE)

NDM

In the hours before

Local storm report, May 18, 12:56 PM CDT, 11 minutes before
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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 9:42 PM CDTSevere Thunderstorm WarningLOTBoone, Winnebago48 min
May 17, 10:34 PM CDTSpecial Marine WarningLOT86 min
May 17, 10:34 PM CDTSpecial Marine WarningLOT86 min
May 17, 11:20 PM CDTSevere Thunderstorm WarningLOTLake25 min
May 17, 11:43 PM CDTFlash Flood WarningLOTLake, McHenry6 hr
May 17, 11:53 PM CDTSpecial Marine WarningLOT97 min
May 17, 11:53 PM CDTSpecial Marine WarningLOT97 min
May 17, 11:58 PM CDTSevere Thunderstorm WarningLOTLake47 min
May 18, 12:25 AM CDTFlash Flood WarningLOTCook5 hr
May 18, 12:46 AM CDTSevere Thunderstorm WarningLOTLaSalle44 min
May 18, 1:44 PM CDTSevere Thunderstorm WarningLOTBenton46 min
May 18, 2:09 PM CDTSevere Thunderstorm WarningLOTJasper, Newton51 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2004Severe Thunderstorm Warnings in Indiana, 2004Every severe thunderstorm warning in 2004

Sources

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