Alert archive / Illinois / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 104, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Sep 13, 2005, 6:52 PM CDT for Lake County, Illinois. It was in force for 16 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
- Sep 13, 2005, 6:52 PM CDT (23:52 UTC)
- Expired
- Sep 13, 2005, 7:08 PM CDT
- In force
- 16 min
- Issued by
- NWS Chicago, IL
- Area
- Counties, with a storm outline in the text
County Lake County, IL
The radar
The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 23:53 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
Davenport, (KDVN), launched 12:00Z, 11.9 hours before the alert went out and 233 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
- 126 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 1589 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 194 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 Sep 13, 6:30 PM CDT, 22 minutes earlier.
Area forecast discussion, Sep 13, 6:30 PM CDT, 22 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 430 PM CDT TUE SEP 13 2005 ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011- 019-141100- 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 PM CDT TUE SEP 13 2005 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE... TONIGHT SHOWERS AND THUNDERSTORMS ARE SPREADING ACROSS NORTHERN ILLINOIS THIS AFTERNOON. THERE IS A SLIGHT RISK THAT SOME OF THE THUNDERSTORMS MAY BECOME SEVERE LATE THIS AFTERNOON AND EARLY THIS EVENING. THE GREATEST THREAT IS FROM HAIL AND DAMAGING WINDS. SEVERAL OF THE THUNDERSTORMS THAT ARE MOVING EAST FROM THE MISSISSIPPI RIVER HAVE A HISTORY OF SMALL HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY THESE IS A CHANCE OF SOME LINGERING THUNDERSTORMS OVER THE NORTHWEST INDIANA COUNTIES THROUGH WEDNESDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY TONIGHT. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE) LMZ740>745-766-141100- WINTHROP HARBOR IL TO MICHIGAN CITY IN- LAKE MICHIGAN- 430 PM CDT TUE SEP 13 2005 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE... TONIGHT SHOWERS AND THUNDERSTORMS ARE LIKELY THIS EVENING. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS MAY BE SEVERE. THE MAIN THREAT IS STRONG WINDS. .DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS CONTINUING THROUGH THE EARLY MORNING HOURS ON WEDNESDAY. THE THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)
In the hours before
Local storm report, Sep 13, 5:52 PM CDT, 1 hour before
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</html>Local storm report, Sep 13, 6:11 PM CDT, 41 minutes before
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</html>Local storm report, Sep 13, 6:22 PM CDT, 30 minutes before
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</html>Local storm report, Sep 13, 6:30 PM CDT, 22 minutes before
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</html>Local storm report, Sep 13, 6:46 PM CDT, 6 minutes before
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</html>Local storm report, Sep 13, 6:50 PM CDT, 2 minutes before
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</html>The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 5:01 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Winnebago | 24 min |
| Sep 13, 5:22 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 53 min |
| Sep 13, 6:03 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, McHenry, Winnebago | 57 min |
| Sep 13, 6:11 PM CDT | Special Marine Warning | LOT | 94 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2005Every severe thunderstorm warning in 2005
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.