Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 87, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Aug 12, 2021, 2:43 PM CDT for Christian County, Macon County, Sangamon County, Illinois. It was in force for 47 min. 18 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 12, 2021, 2:43 PM CDT (19:43 UTC)
- Expired
- Aug 12, 2021, 3:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Christian County, IL, Macon County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 19:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 12, 2:44 PM CDT | TSTM WND DMG | 1 Ene Southern View, IL | TREE LIMB DOWN ON NORTH SIDE OF INTERSTATE. |
| Aug 12, 2:44 PM CDT | TSTM WND DMG | 1 Nne Grandview, IL | TREE LIMB DOWN. TIME ESTIMATED FROM RADAR. |
| Aug 12, 2:47 PM CDT | TSTM WND DMG | 1 S Riverton, IL | 16 IN DIAMETER HEALTHY TREE SNAPPED. SEVERAL BRANCHES DOWN IN THE SAME AREA AS WELL. TIME ESTIMATED FROM RADAR. |
| Aug 12, 2:47 PM CDT | TSTM WND DMG | 1 S Springfield, IL | 16 IN DIAMETER HEALTHY TREE SNAPPED. SEVERAL BRANCHES DOWN IN THE SAME AREA AS WELL. TIME ESTIMATED FROM RADAR. |
| Aug 12, 2:48 PM CDT | TSTM WND DMG | 2 Nw Grandview, IL | POWER POLE SNAPPED AND TENTS DAMAGED AT STATE FAIRGROUNDS |
| Aug 12, 2:48 PM CDT | TSTM WND DMG | 3 E Chatham, IL | LARGE TREE DOWN IN BRIDGEVIEW PARK. |
| Aug 12, 2:48 PM CDT | TSTM WND DMG | 3 E Chatham, IL | LARGE TREE LIMB 1.5 FT IN DIAMETER BLOWN DOWN ON LAKEWOOD DR NEAR SUGAR CREEK STABLES. |
| Aug 12, 2:48 PM CDT | TSTM WND DMG | 3 S Southern View, IL | LARGE TREE SPLIT AND BLOWN DOWN SOUTH OF TORONTO RD ON NORTH COTTON HILL RD. |
| Aug 12, 2:48 PM CDT | TSTM WND GST 60 | 2 Nw Grandview, IL | |
| Aug 12, 3:01 PM CDT | TSTM WND DMG | 1 E Grandview, IL | POWER OUTAGES REPORTED. |
| Aug 12, 3:06 PM CDT | TSTM WND DMG | Riverton, IL | TREES UPROOTED, EXTENSIVE TREE DAMAGE |
| Aug 12, 3:06 PM CDT | TSTM WND DMG | Riverton, IL | TREES UPROOTED, EXTENSIVE TREE DAMAGE. |
| Aug 12, 3:10 PM CDT | TSTM WND DMG | Stonington, IL | A FEW TREES BROKEN IN TWO, SEVERAL LIMBS DOWN. WEATHER STATION RECORDED GUSTS OF 50 TO 75 MPH. |
| Aug 12, 3:10 PM CDT | TSTM WND GST 58 | Taylorville, IL | PERSONAL WEATHER EQUIPMENT READ 58 MPH BEFORE FAILING. |
| Aug 12, 3:15 PM CDT | TSTM WND DMG | 1 Nw Taylorville, IL | BRANCHES DOWN NORTH SILVER ST 800 BLOCK BLOCKING ROAD. |
| Aug 12, 3:16 PM CDT | TSTM WND GST 70 | Taylorville Airport, IL | |
| Aug 12, 3:20 PM CDT | TSTM WND GST 70 | Taylorville, IL | TRAINED SPOTTER REPORTED 70-75 MPH WIND GUSTS. |
| Aug 12, 3:27 PM CDT | TSTM WND DMG | 3 E Chatham, IL | SEVERAL LARGE TREE BRANCHES DOWN AND POWER OUTAGE. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 91 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
- 1191 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1149 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted.
823 WUUS53 KILX 121943 SVRILX ILC021-115-167-122030- /O.NEW.KILX.SV.W.0087.210812T1943Z-210812T2030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Lincoln IL 243 PM CDT Thu Aug 12 2021 The National Weather Service in Lincoln has issued a * Severe Thunderstorm Warning for... Central Christian County in central Illinois... Central Sangamon County in central Illinois... Southwestern Macon County in central Illinois... * Until 330 PM CDT. * At 243 PM CDT, a severe thunderstorm was located over Rochester, or near Springfield, moving southeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Mechanicsburg around 250 PM CDT. Other locations in the path of this severe thunderstorm include Edinburg, Kincaid, Bulpitt, Jeisyville, Taylorville and Stonington. This includes the following highways... Interstate 55 between mile markers 88 and 107. Interstate 72 between mile markers 93 and 120. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3981 8981 3996 8961 3975 8906 3942 8935 TIME...MOT...LOC 1943Z 309DEG 27KT 3977 8956 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ SB
2 follow-up statements
270 WWUS53 KILX 122000 SVSILX Severe Weather Statement National Weather Service Lincoln IL 300 PM CDT Thu Aug 12 2021 ILC021-115-167-122030- /O.CON.KILX.SV.W.0087.000000T0000Z-210812T2030Z/ Christian-Sangamon-Macon- 300 PM CDT Thu Aug 12 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR CENTRAL CHRISTIAN...EASTERN SANGAMON AND SOUTHWESTERN MACON COUNTIES... At 300 PM CDT, a severe thunderstorm was located near Edinburg, or 12 miles southeast of Springfield, moving southeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Edinburg, Kincaid, Bulpitt, Jeisyville, Taylorville and Stonington. This includes the following highways... Interstate 55 between mile markers 88 and 97. Interstate 72 between mile markers 97 and 120. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3972 8970 3990 8946 3975 8906 3942 8935 TIME...MOT...LOC 2000Z 309DEG 27KT 3969 8943 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ SB
056
WWUS53 KILX 122032
SVSILX
Severe Weather Statement
National Weather Service Lincoln IL
332 PM CDT Thu Aug 12 2021
ILC021-115-167-122042-
/O.EXP.KILX.SV.W.0087.000000T0000Z-210812T2030Z/
Christian-Sangamon-Macon-
332 PM CDT Thu Aug 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHRISTIAN...EASTERN
SANGAMON AND SOUTHWESTERN MACON COUNTIES HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3972 8970 3990 8946 3975 8906 3942 8935
TIME...MOT...LOC 2032Z 309DEG 27KT 3954 8920
$$
37The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 2:45 AM CDT | Heat Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 15 hr |
| Aug 12, 2:59 AM CDT | Special Weather Statement | ILX | McLean | 46 min |
| Aug 12, 3:14 AM CDT | Severe Thunderstorm Warning | ILX | McLean | 31 min |
| Aug 12, 3:51 AM CDT | Special Weather Statement | ILX | McLean | 24 min |
| Aug 12, 4:02 AM CDT | Special Weather Statement | ILX | Tazewell | 43 min |
| Aug 12, 4:26 AM CDT | Severe Thunderstorm Warning | ILX | Logan, McLean, Tazewell | 21 min |
| Aug 12, 8:12 AM CDT | Special Weather Statement | ILX | McLean | 48 min |
| Aug 12, 9:13 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean | 47 min |
| Aug 12, 9:24 AM CDT | Areal Flood Advisory | ILX | DeWitt, McLean, Piatt | 3 hr |
| Aug 12, 10:04 AM CDT | Flash Flood Warning | ILX | Champaign, McLean | 5 hr |
| Aug 12, 10:52 AM CDT | Severe Thunderstorm Warning | ILX | Champaign | 38 min |
| Aug 12, 11:17 AM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 3 hr |
| Aug 12, 11:26 AM CDT | Special Weather Statement | ILX | Fulton, Tazewell | 49 min |
| Aug 12, 12:16 PM CDT | Special Weather Statement | ILX | Logan | 44 min |
| Aug 12, 1:05 PM CDT | Special Weather Statement | ILX | Vermilion | 40 min |
| Aug 12, 1:45 PM CDT | Special Weather Statement | ILX | Champaign, Piatt | 45 min |
| Aug 12, 2:16 PM CDT | Flash Flood Warning | ILX | Champaign, DeWitt, Piatt | 119 min |
| Aug 12, 2:23 PM CDT | Special Weather Statement | ILX | Champaign | 52 min |
| Aug 12, 2:35 PM CDT | Special Weather Statement | ILX | Christian, Morgan, Sangamon | 25 min |
| Aug 12, 2:53 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 37 min |
| Aug 12, 3:01 PM CDT | Areal Flood Warning | ILX | Champaign, McLean | 6 hr |
| Aug 12, 3:08 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Moultrie, Shelby | 52 min |
| Aug 12, 3:43 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Effingham, Moultrie, Shelby | 47 min |
| Aug 12, 4:15 PM CDT | Flash Flood Warning | ILX | Douglas, Moultrie, Shelby | 3 hr |
| Aug 12, 4:29 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Cumberland, Effingham, Jasper, Shelby | 46 min |
| Aug 12, 5:09 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Crawford, Jasper | 36 min |
| Aug 12, 5:28 PM CDT | Special Weather Statement | ILX | Scott | 32 min |
| Aug 12, 5:30 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Morgan, Scott | 18 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.