Alert archive / Illinois / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 52, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Aug 9, 1995, 1:31 PM CDT for Lake County, McHenry County, Illinois. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Aug 9, 1995, 1:31 PM CDT (18:31 UTC)
- Expired
- Aug 9, 1995, 2:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Lake County, IL, McHenry County, IL
The radar
The Milwaukee radar (KMKX), 77 km from the middle of the area, began a volume at 18:34 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, 6.5 hours before the alert went out and 209 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
- 2688 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Aug 9, 11:08 AM CDT, 2 hours 23 minutes before
ILZ001>094-IAZ065>068-INZ001-101000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1100 AM CDT WED AUG 9 1995 ...SEVERE WEATHER OUTLOOK FOR ILLINOIS... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE NORTHERN HALF OF ILLINOIS THIS AFTERNOON AND TONIGHT. ZOGG/MORRISON
Special weather statement, Aug 9, 11:30 AM CDT, 2 hours 1 minute before
ILZ001>094-IAZ065>068-INZ001-101000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1130 AM CDT WED AUG 9 1995 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE CHICAGO METROPOLITAN AREA UNTIL 200 PM CDT... THE WATCH INCLUDES MCHENRY...LAKE...COOK...KANE...DUPAGE...KENDALL AND WILL COUNTIES. THE WATCH HAS BEEN CANCELLED FOR MUCH OF NORTH CENTRAL ILLINOIS INCLUDING ROCKFORD...DIXON...DEKALB AND OTTAWA. THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHEAST WISCONSIN AND MAINLY THE FAR NORTH SUBURBS OF CHICAGO. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ALLSOPP
Special weather statement, Aug 9, 11:33 AM CDT, 1 hour 58 minutes before
ILZ001>094-IAZ065>068-INZ001-101000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1130 AM CDT WED AUG 9 1995 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE CHICAGO METROPOLITAN AREA UNTIL 200 PM CDT... THE WATCH INCLUDES MCHENRY...LAKE...COOK...KANE...DUPAGE...KENDALL AND WILL COUNTIES. THE WATCH HAS BEEN CANCELLED FOR MUCH OF NORTH CENTRAL ILLINOIS INCLUDING ROCKFORD...DIXON...DEKALB AND OTTAWA. THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHEAST WISCONSIN AND MAINLY THE FAR NORTH SUBURBS OF CHICAGO. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ALLSOPP
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 1:16 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 44 min |
| Aug 9, 3:04 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 41 min |
| Aug 9, 3:29 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle | 46 min |
| Aug 9, 3:54 PM CDT | Tornado Warning | LOT | Grundy, LaSalle | 51 min |
| Aug 9, 4:09 PM CDT | Tornado Warning | LOT | LaSalle | 51 min |
| Aug 9, 5:32 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 43 min |
| Aug 9, 6:17 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 28 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1995Every severe thunderstorm warning in 1995
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.