Alert archive / Illinois / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 187, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 30, 2024, 5:45 PM CDT for 5 counties in Illinois. It was in force for 36 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 30, 2024, 5:45 PM CDT (22:45 UTC)
- Expired
- Jul 30, 2024, 6:21 PM CDT
- In force
- 36 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clay County, IL, Crawford County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL
The radar
The Evansville,IN radar (KVWX), 70 km from the middle of the area, began a volume at 22:46 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 |
|---|---|---|---|
| Jul 30, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 153 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
- 695 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1102 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
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 30, 2:06 PM CDT, 3 hours 39 minutes earlier. Its key messages:
- Multiple rounds of severe storms are expected across the Midwest through Thursday. There is an Enhanced Risk (level 3 of 5) for severe storms along and west of a Canton to Taylorville line today.
- Heat and Humidity also continue through Thursday with afternoon highs in the 90s and heat indices peaking each day between 95-110 degrees.
Area forecast discussion, Jul 30, 2:06 PM CDT, 3 hours 39 minutes before
Area Forecast Discussion National Weather Service Lincoln IL 206 PM CDT Tue Jul 30 2024 .KEY MESSAGES... - Multiple rounds of severe storms are expected across the Midwest through Thursday. There is an Enhanced Risk (level 3 of 5) for severe storms along and west of a Canton to Taylorville line today. - Heat and Humidity also continue through Thursday with afternoon highs in the 90s and heat indices peaking each day between 95-110 degrees. && .DISCUSSION... Issued at 200 PM CDT Tue Jul 30 2024 THROUGH TONIGHT... The line of storms that rolled through portions of central Illinois this morning has continued southeast across the Ohio Valley this afternoon. This has overworked portions of central Illinois where temps are slowly recovering, rising into the mid to upper 80s early this afternoon. Satellite imagery shows the western edge of the cold pool interacting with the warm sector across portions of north central MO SE across the St Louis area where dew points have been pooling in the mid to upper 70s. MLCAPE values are peaking around 3500 J/kg in the vicinity of that boundary but quickly drop off to 1000 J/kg or less across most of central Illinois where MLCin is also 100-200 J/kg. As such, the ongoing cluster of storms moving into the Illinois River Valley are expected to continue to struggle with the highest severe threat currently along the aforementioned boundary just to our west where upscale growth is expected. This boundary is very slowly trying to lift northeast so would not completely rule out the severe storms clipping the far SW/S portions of the forecast area where the enhanced risk is currently depicted by the SPC. Overnight the low level jet is expected to strengthen to our west with the strongest convergence across portions of western Iowa initially, but gradually spreading east across central Illinois overnight as the low level jet veers. This will support continued chances for thunderstorms overnight including a potential third MCS for the region. WEDNESDAY... A warm front will remain draped over northern Illinois Wednesday with a broad warm sector across the remainder of Illinois characterized by dew points in the lower to mid 70s and strong instability with MLCAPE near 4000 J/kg in spots. Convective evolution again contains a lot of uncertainty, but models have the general idea of an ongoing MCS Wednesday morning (initiating off of overnight LLJ over Iowa) will be tracking E/SE across portions of northern and/or central Illinois. Strong recovery is expected after this morning round of storms with additional storms firing in the vicinity of the warm front Wednesday afternoon and quickly growing upscale. Deep layer shear remains seasonably strong Wednesday afternoon, around 40-45 kt supporting storm organization. 0-3km shear vectors are progged to be stronger than today, closer to 30- 35kt which will be better for mesocyclone genesis. Meanwhile, temperatures in the low to mid 90s and dew points well into the 70s will result in heat indices of 100-110 area wide. Convective debris and cloud cover complicates confidence levels in these details enough to preclude additional heat headlines at this time, but at least portions of the area will need a new heat advisory Wednesday. THURSDAY AND FRIDAY... A closed upper low is expected to develop Thursday over Iowa and slowly track east across central Illinois Thursday night into Friday. Moderately strong instability is once again expected across central Illinois Thursday ahead of this low and will support additional strong to severe storms, especially late in the afternoon and into the evening. Attendant surface low and cold front will work across central Illinois Thursday night into Friday morning. Additional showers and storms will be possible during the day Friday as the upper low passes through the area, but precip chances will diminish from the west behind the departing low through the latter half of the day. Highs in the low to mid 90s ahead of the low Thursday will give way to more seasonable highs in the mid 80s Friday. SATURDAY THROUGH TUESDAY... High pressure builds over the region this weekend with dry weather favored and temperatures continuing to run closer to the seasonal norms, though humidity levels will likely remain elevated. A cold front may sag into portions of the state early next week bringing the next chance for shower and storms. Deubelbeiss && .AVIATION... (For the 18z TAFs through 18z Wednesday Afternoon) Issued at 1225 PM CDT Tue Jul 30 2024 A modest SSW breeze and VFR conditions will prevail through mid afternoon across central Illinois in the wake of early morning storms. Another round of storms is possible across portions of central Illinois late this afternoon and evening with confidence greatest further west. Winds should settle back out of the S/SSW once any storms exit the area late this evening and overnight. Yet another round of storms is possible mid to late Wednesday morning into the afternoon. Deubelbeiss && .ILX WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for ILZ040-047>052-061- 066>068-071>073. &&
Hazardous weather outlook, Jul 30, 2:31 PM CDT, 3 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 231 PM CDT Tue Jul 30 2024 ILZ027>031-036>038-041>046-053>057-062-063-311945- Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-Mason- Logan-De Witt-Piatt-Champaign-Vermilion-Macon-Moultrie-Douglas-Coles- Edgar-Cumberland-Clark- 231 PM CDT Tue Jul 30 2024 This Hazardous Weather Outlook is for central Illinois, east central Illinois and west central Illinois. .DAY ONE...Tonight. There is a slight risk (level 2 of 5) for severe storms this evening through tonight. Damaging wind gusts is the primary hazard but isolated large hail is also possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. There is a marginal risk (level 1 of 5) for severe storms Wednesday and a marginal to slight risk (level 2 of 5) for severe storm Thursday. Heat index values of 100 to 110 degrees are expected Wednesday and Thursday. A few storms may linger into the day Friday but are not expected to be severe. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this evening and tonight. Expected storm motion is toward the southeast around 50 mph. ILZ040-047>052-061-066>068-071>073-311945- Schuyler-Cass-Menard-Scott-Morgan-Sangamon-Christian-Shelby- Effingham-Jasper-Crawford-Clay-Richland-Lawrence- 231 PM CDT Tue Jul 30 2024 This Hazardous Weather Outlook is for central Illinois, southeast Illinois and west central Illinois. .DAY ONE...Tonight. There is an enhanced risk (level 3 of 5) for severe storms late this afternoon through tonight. Damaging wind gusts is the primary hazard but isolated large hail is also possible. Heat indices of 100 to 105 are possible this afternoon and early evening. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. There is a marginal risk (level 1 of 5) for severe storms Wednesday and Thursday. Heat index values of 100 to 110 degrees are expected Wednesday and Thursday. A few storms may linger into the day Friday but are not expected to be severe. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed This evening west of a Canton to Taylorville line. Expected storm motion is toward the southeast around 50 mph. Deubelbeiss
In the hours before
Local storm report, Jul 30, 4:46 PM CDT, 59 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 29, 7:25 PM CDT | Tornado Warning | ILX | Christian | 50 min |
| Jul 29, 8:05 PM CDT | Tornado Warning | ILX | Christian, Macon, Sangamon | 40 min |
| Jul 29, 8:07 PM CDT | Tornado Warning | ILX | Christian, Shelby | 23 min |
| Jul 30, 12:53 AM CDT | Dense Fog Advisory | ILX | Cass, Champaign, Christian, DeWitt, Fulton, Logan and 13 more | 7 hr |
| Jul 30, 2:23 AM CDT | Heat Advisory | ILX | Cass, Christian, Clay, Crawford, Effingham, Jasper and 8 more | 18 hr |
| Jul 30, 6:11 AM CDT | Severe Thunderstorm Warning | ILX | Schuyler | 49 min |
| Jul 30, 6:33 AM CDT | Severe Thunderstorm Warning | ILX | Fulton | 42 min |
| Jul 30, 6:40 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Fulton, Mason, Schuyler | 35 min |
| Jul 30, 7:02 AM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard, Morgan, Sangamon | 43 min |
| Jul 30, 7:30 AM CDT | Special Weather Statement | ILX | Menard, Sangamon | 45 min |
| Jul 30, 8:05 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Sangamon, Shelby | 40 min |
| Jul 30, 8:36 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Coles, Cumberland, Effingham, Macon, Moultrie and 1 more | 24 min |
| Jul 30, 8:58 AM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Effingham, Jasper, Moultrie, Shelby | 47 min |
| Jul 30, 9:37 AM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Cumberland, Jasper, Lawrence, Richland | 38 min |
| Jul 30, 10:11 AM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Lawrence, Richland | 19 min |
| Jul 30, 1:34 PM CDT | Special Weather Statement | ILX | Fulton, Mason | 26 min |
| Jul 30, 2:17 PM CDT | Special Weather Statement | ILX | Menard | 28 min |
| Jul 30, 3:17 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Logan, Macon, Moultrie, Sangamon, Shelby | 43 min |
| Jul 30, 3:48 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Douglas, Macon, Moultrie, Shelby | 42 min |
| Jul 30, 4:22 PM CDT | Severe Thunderstorm Warning | ILX | Richland | 38 min |
| Jul 30, 4:25 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Cumberland, Effingham, Shelby | 65 min |
| Jul 30, 4:54 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence, Richland | 51 min |
| Jul 30, 5:17 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper, Lawrence, Richland | 43 min |
| Jul 30, 5:32 PM CDT | Special Weather Statement | ILX | Schuyler | 28 min |
| Jul 30, 5:54 PM CDT | Areal Flood Advisory | ILX | Effingham, Jasper, Lawrence, Richland | 3 hr |
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.