Alert archive / Illinois / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 330, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 27, 2026, 5:01 AM CDT for Clay County, Effingham County, Jasper County, Illinois. It was in force for 44 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
- Jul 27, 2026, 5:01 AM CDT (10:01 UTC)
- Expired
- Jul 27, 2026, 5:45 AM CDT
- In force
- 44 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clay County, IL, Effingham County, IL, Jasper County, IL
The radar
The Evansville,IN radar (KVWX), 96 km from the middle of the area, began a volume at 10:05 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 00:00Z, 10.0 hours before the alert went out and 135 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
- 5988 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 663 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 6.4
- Supercell composite
- 28.4
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 Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 27, 4:09 AM CDT, 52 minutes earlier.
Area forecast discussion, Jul 27, 4:09 AM CDT, 52 minutes before
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</html>Hazardous weather outlook, Jul 26, 2:30 PM CDT, 14 hours 31 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 230 PM CDT Sun Jul 26 2026 ILZ027>031-036>038-040>043-047>053-271930- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler- Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-Christian- Macon- 230 PM CDT Sun Jul 26 2026 This Hazardous Weather Outlook is for central Illinois and west central Illinois. .DAY ONE...Tonight. Heat index values of 105 to 110 degrees are likely into this evening. Clusters of thunderstorms will drop southeast out of the Upper Mississippi Valley tonight. While it is uncertain how far west they may get, they would most likely arrive overnight and produce gusty winds. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional storm clusters will drop southeast into the area through Monday evening. The best chance of severe weather would be further east, but strong winds will be possible with any storms. Heat index values around 115 degrees are likely on Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed after 12 am. ILZ044>046-054>057-061>063-066>068-071>073-271930- Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby- Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence- 230 PM CDT Sun Jul 26 2026 This Hazardous Weather Outlook is for central Illinois, east central Illinois and southeast Illinois. .DAY ONE...Tonight. Heat index values of 100 to 105 degrees are likely into this evening. Clusters of thunderstorms will drop southeast out of the Upper Mississippi Valley tonight. They would most likely arrive in eastern Illinois toward daybreak and may be locally strong to severe. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional storm clusters will drop southeast into the area through Monday evening. These may also be strong to severe, with damaging winds the main concern. Heat index values around 110 degrees are likely on Monday, though they will be lower if storms end up being numerous through the day. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed overnight tonight into the early morning hours. Copple
In the hours before
Local storm report, Jul 27, 3:32 AM CDT, 1 hour 29 minutes before
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</html>The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 9:30 PM CDT | Special Weather Statement | ILX | Lawrence | 15 min |
| Jul 26, 9:46 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence | 15 min |
| Jul 26, 10:00 PM CDT | Special Weather Statement | ILX | Lawrence | 15 min |
| Jul 26, 10:15 PM CDT | Special Weather Statement | ILX | Lawrence | 15 min |
| Jul 27, 2:02 AM CDT | Heat Advisory | ILX | Clark, Edgar, Vermilion | 9 hr |
| Jul 27, 2:24 AM CDT | Flash Flood Warning | ILX | Effingham | 4 hr |
| Jul 27, 2:31 AM CDT | Areal Flood Advisory | ILX | Clay | 3 hr |
| Jul 27, 2:50 AM CDT | Flash Flood Warning | ILX | Clay | 5 hr |
| Jul 27, 4:12 AM CDT | Severe Thunderstorm Warning | ILX | Clay | 33 min |
| Jul 27, 6:27 AM CDT | Areal Flood Warning | ILX | Effingham | 3 hr |
| Jul 27, 7:11 AM CDT | Severe Thunderstorm Warning | ILX | Cumberland | 14 min |
| Jul 27, 3:58 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 29 min |
| Jul 27, 4:26 PM CDT | Special Weather Statement | ILX | Christian | 34 min |
| Jul 27, 5:17 PM CDT | Severe Thunderstorm Warning | ILX | Edgar, Vermilion | 43 min |
| Jul 27, 5:45 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 60 min |
| Jul 27, 6:07 PM CDT | Tornado Warning | ILX | Vermilion | 38 min |
| Jul 27, 6:13 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 62 min |
| Jul 27, 6:42 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford | 48 min |
| Jul 27, 6:44 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 31 min |
| Jul 27, 6:59 PM CDT | Flash Flood Warning | ILX | Clark, Edgar | 3 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2026Every severe thunderstorm warning in 2026
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.