Alert archive / Illinois / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 207, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Aug 18, 2025, 7:40 PM CDT for Fulton County, Knox County, Illinois. It was in force for 35 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
- Aug 18, 2025, 7:40 PM CDT (00:40 UTC)
- Expired
- Aug 18, 2025, 8:15 PM CDT
- In force
- 35 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Fulton County, IL, Knox County, IL
The radar
The Lincoln radar (KILX), 96 km from the middle of the area, began a volume at 00:41 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 00:00Z, 0.7 hours before the alert went out and 105 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
- 749 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1256 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.0
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 Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 6:13 PM CDT, 1 hour 27 minutes earlier.
Area forecast discussion, Aug 18, 6:13 PM CDT, 1 hour 27 minutes before
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</html>Hazardous weather outlook, Aug 18, 2:05 PM CDT, 5 hours 35 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 205 PM CDT Mon Aug 18 2025 ILZ027>031-036>038-040>057-061>063-066>068-191915- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Schuyler- Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-Scott- Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-Shelby- Cumberland-Clark-Effingham-Jasper-Crawford- 205 PM CDT Mon Aug 18 2025 This Hazardous Weather Outlook is for central Illinois, east central Illinois, southeast Illinois and west central Illinois. .DAY ONE...Tonight. Heat indices will slowly fall from the triple digits early this evening into the mid 70s overnight. Scattered thunderstorms are possible this evening into tonight (30 to 40% chance). Any storm that develops will be capable of frequent lightning, heavy rain, and locally strong winds. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There is a 30-50% chance of thunderstorms Tuesday, with the highest chances during the morning. Severe weather is not expected, but locally heavy rain and frequent lightning are possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated tonight. ILZ071>073-191915- Clay-Richland-Lawrence- 205 PM CDT Mon Aug 18 2025 This Hazardous Weather Outlook is for southeast Illinois. .DAY ONE...Tonight. Heat indices will slowly fall from the triple digits early this evening into the mid 70s overnight. Scattered thunderstorms are possible this evening into tonight (20 to 30% chance). Any storm that develops will be capable of frequent lightning, heavy rain, and locally strong winds. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The combination of heat and humidity is forecast to result in heat indices of 100 to 105 Tuesday afternoon. There is a 30-40% chance of thunderstorms Tuesday. Severe weather is not expected, but locally heavy rain and frequent lightning are possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated tonight. Bumgardner
In the hours before
Special weather statement, Aug 18, 6:26 PM CDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Lincoln IL
626 PM CDT Mon Aug 18 2025
ILZ028-190000-
Stark-
626 PM CDT Mon Aug 18 2025
...STRONG THUNDERSTORMS WILL IMPACT STARK...NORTHEASTERN KNOX AND
NORTHWESTERN PEORIA COUNTIES THROUGH 700 PM CDT...
At 624 PM CDT, Doppler radar was tracking wind gusts along a line
extending from near Osceola to near La Fayette, ahead of strong
thunderstorms. Movement was east at 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Wyoming, Toulon, Osceola, Bradford, Elmira, La Fayette, Castleton,
West Jersey, and Duncan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4097 8964 4097 8997 4098 8999 4115 8998
4115 8987 4123 8986 4124 8964
TIME...MOT...LOC 2324Z 290DEG 27KT 4125 8976 4109 9002
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
AATSpecial weather statement, Aug 18, 7:30 PM CDT, 10 minutes before
Special Weather Statement
National Weather Service Lincoln IL
730 PM CDT Mon Aug 18 2025
ILZ027-036-190100-
Knox-Fulton-
730 PM CDT Mon Aug 18 2025
...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN FULTON AND SOUTHERN
KNOX COUNTIES THROUGH 800 PM CDT...
At 729 PM CDT, Doppler radar was tracking a gust front along a line
extending from near Abingdon to near Bushnell, ahead of strong
thunderstorms. Movement was southeast at 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Abingdon, Cuba, Avon, Fairview, London Mills, Maquon, St. Augustine,
Smithfield, Marietta, Ellisville, Fiatt, Delong, and Middle Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4085 9044 4080 9005 4039 9022 4047 9045
TIME...MOT...LOC 0029Z 295DEG 25KT 4077 9046 4058 9055
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
AATThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:30 PM CDT | Special Weather Statement | ILX | Fulton | 30 min |
| Aug 18, 7:52 PM CDT | Special Weather Statement | ILX | Marshall | 23 min |
| Aug 18, 8:14 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria | 31 min |
| Aug 18, 8:38 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria, Tazewell | 52 min |
| Aug 18, 9:11 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Logan, McLean, Mason, Peoria, Tazewell and 1 more | 34 min |
| Aug 19, 2:07 AM CDT | Special Weather Statement | ILX | Logan | 23 min |
| Aug 19, 2:10 AM CDT | Heat Advisory | ILX | Clay, Crawford, Effingham, Jasper, Lawrence, Richland | 17 hr |
| Aug 19, 2:19 AM CDT | Special Weather Statement | ILX | Logan | 26 min |
| Aug 19, 2:31 AM CDT | Special Weather Statement | ILX | DeWitt | 29 min |
| Aug 19, 2:39 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon | 36 min |
| Aug 19, 3:14 AM CDT | Severe Thunderstorm Warning | ILX | Macon, Piatt | 31 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2025Every severe thunderstorm warning in 2025
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.