Alert archive / Illinois / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 99, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at May 29, 2006, 2:07 PM CDT for Cook County, Illinois. 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 29, 2006, 2:07 PM CDT (19:07 UTC)
- Expired
- May 29, 2006, 2:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Chicago, IL
- Area
- Counties, with a storm outline in the text
County Cook County, IL
The radar
The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 19:07 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.1 hours before the alert went out and 210 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1535 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1017 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 29, 1:00 PM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, May 29, 1:00 PM CDT, 1 hour 7 minutes before
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</html>Hazardous weather outlook, May 29, 4:30 AM CDT, 9 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 430 AM CDT MON MAY 29 2006 ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011- 019-300930- 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- 430 AM CDT MON MAY 29 2006 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE... TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS LATE MONDAY AFTERNOON THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NECESSARY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE) LMZ740>745-766-300930- WINTHROP HARBOR IL TO MICHIGAN CITY IN- LAKE MICHIGAN- 430 AM CDT MON MAY 29 2006 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE... TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS LATE MONDAY AFTERNOON THROUGH WEDNESDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 2:37 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 38 min |
| May 29, 2:47 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 43 min |
| May 29, 3:06 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane, Lake, McHenry | 54 min |
| May 29, 3:20 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 27 min |
| May 29, 3:29 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 46 min |
| May 29, 3:39 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 37 min |
| May 29, 3:46 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 29 min |
| May 29, 3:49 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Kendall | 41 min |
| May 29, 4:11 PM CDT | Special Marine Warning | LOT | 94 min | |
| May 29, 4:26 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 64 min |
| May 29, 4:43 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 47 min |
| May 29, 5:03 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 42 min |
| May 29, 5:16 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 59 min |
| May 29, 5:24 PM CDT | Special Marine Warning | LOT | 96 min | |
| May 29, 5:49 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 56 min |
| May 29, 5:56 PM CDT | Special Marine Warning | LOT | 94 min | |
| May 29, 6:40 PM CDT | Flash Flood Warning | LOT | Kankakee | 3 hr |
| May 29, 3:53 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 42 min |
| May 29, 4:34 PM CDT | Severe Thunderstorm Warning | LOT | Benton | 39 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2006Every severe thunderstorm warning in 2006
Sources
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.