Alert archive / Illinois / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 204, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Aug 15, 2024, 11:22 PM CDT for 5 counties in 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
- Aug 15, 2024, 11:22 PM CDT (04:22 UTC)
- Expired
- Aug 16, 2024, 12:00 AM CDT
- In force
- 38 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Marshall County, IL, Peoria County, IL, Stark County, IL, Tazewell County, IL, Woodford County, IL
The radar
The Lincoln radar (KILX), 79 km from the middle of the area, began a volume at 04:22 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 15, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 4.4 hours before the alert went out and 110 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
- 1642 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 897 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 9.9
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 15, 11:21 PM CDT, 1 minute earlier.
Area forecast discussion, Aug 15, 11:21 PM CDT, 1 minute before
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</html>Hazardous weather outlook, Aug 15, 2:58 PM CDT, 8 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 258 PM CDT Thu Aug 15 2024 ILZ027>031-036-037-040>042-047>051-162000- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-Schuyler-Mason- Logan-Cass-Menard-Scott-Morgan-Sangamon- 258 PM CDT Thu Aug 15 2024 This Hazardous Weather Outlook is for central Illinois and west central Illinois. .DAY ONE...Tonight. Scattered thunderstorms tonight will pose a risk for strong to locally damaging wind gusts, hail, and a low chance for a tornado. In addition, torrential rains may lead to rapid onset urban and street flooding. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed between 9 pm and 1 am. Expected storm motion is toward the east around 30 mph. ILZ052>054-061-062-066>068-071>073-162000- Christian-Macon-Moultrie-Shelby-Cumberland-Effingham-Jasper-Crawford- Clay-Richland-Lawrence- 258 PM CDT Thu Aug 15 2024 This Hazardous Weather Outlook is for central Illinois, east central Illinois and southeast Illinois. .DAY ONE...Tonight. Scattered thunderstorms tonight will pose a risk for strong to locally damaging wind gusts, hail, and a low risk for a tornado. In addition, torrential rains may lead to rapid onset urban and street flooding. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed between 10 pm and 3 am. Expected storm motion is toward the east around 30 mph. ILZ038-043>046-055>057-063-162000- McLean-De Witt-Piatt-Champaign-Vermilion-Douglas-Coles-Edgar-Clark- 258 PM CDT Thu Aug 15 2024 This Hazardous Weather Outlook is for central Illinois and east central Illinois. .DAY ONE...Tonight. Scattered thunderstorms tonight will pose a risk for strong to locally damaging wind gusts, hail, and a low risk for a tornado. In addition, torrential rains may lead to rapid onset urban and street flooding. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a 20 percent chance for an isolated storm along a cold front Friday. Any storm could turn severe, with localized damaging wind gusts and hail the main concerns. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed between 10 pm and 3 am. Expected storm motion is toward the east around 30 mph. Bumgardner
In the hours before
Local storm report, Aug 15, 6:55 PM CDT, 4 hours 27 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
655 PM CDT Thu Aug 15 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM Rain 3 NE Dunlap 40.89N 89.64W
08/15/2024 M1.33 Inch Peoria IL Cocorahs
Cocorahs station IL-PR-4 Dunlap 2.6 NE.
0545 PM Rain 2 WSW Rochester 39.74N 89.57W
08/15/2024 M1.25 Inch Sangamon IL Mesonet
Mesonet station ROCI2 1.5 W Rochester.
0400 PM Rain 2 W Decatur 39.84N 88.99W
08/15/2024 M1.20 Inch Macon IL Cocorahs
Cocorahs station IL-MA-36 Decatur 3.3 WSW.
0700 AM Rain 3 SE Edelstein 40.91N 89.59W
08/15/2024 M1.19 Inch Peoria IL Cocorahs
Cocorahs station IL-PR-34 2 ESE Edelstein.
0800 AM Rain 2 E Southern View 39.76N 89.60W
08/15/2024 M1.18 Inch Sangamon IL CO-OP Observer
CO-OP Observer station SPNI2 Lake
Springfield.
0648 PM Rain 2 SSE Grandview 39.79N 89.62W
08/15/2024 M1.15 Inch Sangamon IL Mesonet
Mesonet station SPLLC 1 SSE Grandview.
0645 PM Rain 5 ENE Waynesville 40.26N 89.04W
08/15/2024 M1.14 Inch De Witt IL Mesonet
Mesonet station DW9761 Waynesville.
0646 PM Rain 2 WSW Henry 41.10N 89.40W
08/15/2024 M1.13 Inch Marshall IL Mesonet
Mesonet station CW9319 Henry.
0700 AM Rain 4 SSW Alta 40.77N 89.67W
08/15/2024 M1.10 Inch Peoria IL Cocorahs
Cocorahs station IL-PR-8 Peoria 3.4 WNW.
0645 PM Rain 3 W Leland Grove 39.78N 89.74W
08/15/2024 M1.10 Inch Sangamon IL Mesonet
Mesonet station GW3296 Springfield.
0649 PM Rain 4 NE East Peoria 40.70N 89.52W
08/15/2024 M1.05 Inch Tazewell IL Mesonet
Mesonet station GW3458 East Peoria.
0605 AM Rain 3 S Alta 40.77N 89.64W
08/15/2024 M1.03 Inch Peoria IL Public
0645 PM Rain Peoria Heights 40.74N 89.58W
08/15/2024 M1.03 Inch Peoria IL Mesonet
Mesonet station 9089D Peoria Heights.
0800 AM Rain 2 SW White Heath 40.07N 88.54W
08/15/2024 M1.02 Inch Piatt IL Cocorahs
Cocorahs station IL-PT-1 4 NNE Monticello.
1000 AM Rain 2 W Lincoln 40.15N 89.40W
08/15/2024 M1.00 Inch Logan IL Cocorahs
Cocorahs station IL-LG-36 2 W Lincoln.
0545 PM Rain 3 ENE East Peoria 40.68N 89.53W
08/15/2024 M1.00 Inch Tazewell IL Mesonet
Mesonet station FDCI2 1.0 E East Peoria.
0553 PM Rain Willard Airport 40.03N 88.28W
08/15/2024 M1.00 Inch Champaign IL ASOS
ASOS station KCMI Willard Arpt.
&&Local storm report, Aug 15, 9:44 PM CDT, 1 hour 38 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
944 PM CDT Thu Aug 15 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 PM Rain 4 W Decatur 39.84N 89.03W
08/15/2024 M1.20 Inch Macon IL Mesonet
Rainfall this Thursday morning on far west
side of Decatur.
&&Local storm report, Aug 15, 9:47 PM CDT, 1 hour 35 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
947 PM CDT Thu Aug 15 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 PM Rain 2 NE Springfield 39.82N 89.62W
08/15/2024 M1.14 Inch Sangamon IL Mesonet
&&Local storm report, Aug 15, 9:48 PM CDT, 1 hour 34 minutes before
Preliminary Local Storm Report
National Weather Service Lincoln IL
948 PM CDT Thu Aug 15 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM Rain Knoxville 40.90N 90.29W
08/15/2024 M0.98 Inch Knox IL CO-OP Observer
CO-OP Observer station KNXI2 Knoxville.
&&Special weather statement, Aug 15, 10:19 PM CDT, 1 hour 3 minutes before
Special Weather Statement
National Weather Service Lincoln IL
1019 PM CDT Thu Aug 15 2024
ILZ027-160345-
Knox-
1019 PM CDT Thu Aug 15 2024
...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN KNOX COUNTY THROUGH
1045 PM CDT...
At 1015 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Alpha to near Rozetta. Movement was east
at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Galesburg, Abingdon, Knoxville, Wataga, Oneida, Altona, Henderson,
Rio, East Galesburg, and Galesburg Municipal Airport.
This includes Interstate 74 between mile markers 35 and 53.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
west central Illinois.
&&
LAT...LON 4115 9000 4074 9044 4115 9044
TIME...MOT...LOC 0315Z 275DEG 21KT 4124 9037 4091 9081
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH
37Local storm report, Aug 15, 11:06 PM CDT, 16 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 |
|---|---|---|---|---|
| Aug 15, 10:19 PM CDT | Special Weather Statement | ILX | Knox | 26 min |
| Aug 15, 10:40 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Stark | 37 min |
| Aug 15, 10:59 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria, Stark | 46 min |
| Aug 16, 12:04 AM CDT | Special Weather Statement | ILX | Knox | 26 min |
| Aug 16, 12:10 AM CDT | Severe Thunderstorm Warning | ILX | Marshall, Woodford | 20 min |
| Aug 16, 12:49 AM CDT | Special Weather Statement | ILX | Fulton | 11 min |
| Aug 16, 12:52 AM CDT | Special Weather Statement | ILX | Fulton | 23 min |
| Aug 16, 1:12 AM CDT | Special Weather Statement | ILX | Mason | 18 min |
| Aug 16, 1:34 AM CDT | Special Weather Statement | ILX | Logan, Menard | 26 min |
| Aug 16, 1:46 AM CDT | Special Weather Statement | ILX | McLean | 29 min |
| Aug 16, 2:09 AM CDT | Flash Flood Warning | ILX | McLean | 3 hr |
| Aug 16, 3:26 AM CDT | Severe Thunderstorm Warning | ILX | Christian | 34 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2024Every severe thunderstorm warning in 2024
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.