Alert archive / Illinois / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 11, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at May 7, 2004, 6:12 AM CDT for Grundy County, Illinois. It was in force for 48 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 7, 2004, 6:12 AM CDT (11:12 UTC)
- Expired
- May 7, 2004, 7:00 AM CDT
- In force
- 48 min
- Issued by
- NWS Chicago, IL
- Area
- Counties, with a storm outline in the text
County Grundy County, IL
The radar
The Chicago radar (KLOT), 45 km from the middle of the area, began a volume at 11:13 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 7, 5:00 AM CDT | Severe Thunderstorm Watch | SPC | 4 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 6, 6:32 PM CDT, 11 hours 40 minutes earlier.
Area forecast discussion, May 6, 6:32 PM CDT, 11 hours 40 minutes before
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</html>Hazardous weather outlook, May 6, 5:00 PM CDT, 13 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO IL 500 PM CDT THU MAY 6 2004 ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-019 -071100- WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD- LAKE IN-PORTER-NEWTON-JASPER-BENTON- 500 PM CDT THU MAY 6 2004 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE...TONIGHT THERE WILL BE ISOLATED THUNDERSTORMS THIS EVENING...WITH A SLIGHT RISK OF THEM PRODUCING SEVERE WEATHER. IF STRONG STORMS DEVELOP...THE PRIMARY THREAT WOULD BE LARGE HAIL AND DAMAGING WINDS. THERE IS A CHANCE OF MORE THUNDERSTORMS OVERNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS THROUGH THE PERIOD. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER FRIDAY AND SATURDAY. THE POTENTIAL FOR SIGNIFICANT RAINFALL ACCUMULATIONS EXISTS FOR THE FRIDAY THROUGH WEDNESDAY PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THIS EVENING...LATER FRIDAY...AND POSSIBLY AGAIN ON SATURDAY. && NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE) LMZ740>746-766-071100- WINTHROP HARBOR IL TO NEW BUFFALO MI- LAKE MICHIGAN- 500 PM CDT THU MAY 6 2004 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT THERE WILL BE ISOLATED THUNDERSTORMS THIS EVENING...WITH A SLIGHT RISK OF THEM PRODUCING SEVERE WEATHER. IF STRONG STORMS DEVELOP...THE PRIMARY THREAT WOULD BE LARGE HAIL AND DAMAGING WINDS. THERE IS A CHANCE OF MORE THUNDERSTORMS OVERNIGHT. A SMALL CRAFT ADVISORY IS IN EFFECT FOR HAZARDOUS WINDS AND WAVES. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS THROUGH THE PERIOD. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER FRIDAY AND SATURDAY. HAZARDOUS WINDS AND WAVES FOR SMALL CRAFT ARE EXPECTED FRIDAY. && NWS CHICAGO WEBPAGE: WWW.CRH.NOAA.GOV/LOT (LOWER CASE)
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 5:43 AM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 32 min |
| May 7, 6:17 AM CDT | Severe Thunderstorm Warning | LOT | Livingston | 43 min |
| May 7, 1:36 PM CDT | Severe Thunderstorm Warning | LOT | Kendall | 39 min |
| May 7, 3:05 PM CDT | Severe Thunderstorm Warning | LOT | Will | 40 min |
| May 7, 7:56 AM CDT | Severe Thunderstorm Warning | LOT | Benton, Jasper, Newton | 49 min |
| May 7, 3:33 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 27 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 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.