Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 75, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 15, 2021, 3:39 PM CDT for 4 counties in Illinois. It was in force for 66 min. 1 report 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
- Jul 15, 2021, 3:39 PM CDT (20:39 UTC)
- Expired
- Jul 15, 2021, 4:45 PM CDT
- In force
- 66 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Logan County, IL, Mason County, IL, Menard County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 12 km from the middle of the area, began a volume at 20:38 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 |
|---|---|---|---|
| Jul 15, 4:22 PM CDT | HAIL 1 | Mount Pulaski, IL | DIME TO QUARTER SIZE HAIL. |
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, 8.7 hours before the alert went out and 74 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
- 628 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1096 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.6
The text
As transmitted.
079
WUUS53 KILX 152039
SVRILX
ILC107-125-129-167-152145-
/O.NEW.KILX.SV.W.0075.210715T2039Z-210715T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
339 PM CDT Thu Jul 15 2021
The National Weather Service in Lincoln has issued a
* Severe Thunderstorm Warning for...
Eastern Menard County in central Illinois...
Logan County in central Illinois...
Northern Sangamon County in central Illinois...
Southeastern Mason County in central Illinois...
* Until 445 PM CDT.
* At 339 PM CDT, severe thunderstorms were located along a line
extending from near Mason City to near Greenview to 6 miles east of
Pleasant Plains, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Mason City around 345 PM CDT.
Middletown around 350 PM CDT.
Other locations in the path of these severe thunderstorms include
Sherman, Elkhart, Williamsville, Hartsburg, Lincoln, Mount Pulaski,
Cornland and Atlanta.
This includes the following highways...
Interstate 155 between mile markers 0 and 7.
Interstate 55 between mile markers 104 and 141.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4028 8921 4008 8919 3989 8923 3988 8985
4003 8978 4027 8980
TIME...MOT...LOC 2039Z 260DEG 32KT 4026 8974 4003 8971 3988 8980
HAIL...<.75IN
WIND...60MPH
$$
Barnes2 follow-up statements
771
WWUS53 KILX 152109
SVSILX
Severe Weather Statement
National Weather Service Lincoln IL
409 PM CDT Thu Jul 15 2021
ILC125-129-152118-
/O.CAN.KILX.SV.W.0075.000000T0000Z-210715T2145Z/
Menard-Mason-
409 PM CDT Thu Jul 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MENARD AND
SOUTHEASTERN MASON COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4028 8921 4008 8919 3989 8923 3988 8963
4003 8954 4027 8959
TIME...MOT...LOC 2108Z 258DEG 28KT 4028 8952 4007 8942 3992 8950
$$
ILC107-167-152145-
/O.CON.KILX.SV.W.0075.000000T0000Z-210715T2145Z/
Logan-Sangamon-
409 PM CDT Thu Jul 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR LOGAN AND NORTHEASTERN SANGAMON COUNTIES...
At 408 PM CDT, severe thunderstorms were located along a line
extending from near Emden to near Elkhart to near Williamsville,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lincoln, Atlanta and Mount Pulaski.
This includes the following highways...
Interstate 155 between mile markers 0 and 7.
Interstate 55 between mile markers 103 and 141.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4028 8921 4008 8919 3989 8923 3988 8963
4003 8954 4027 8959
TIME...MOT...LOC 2108Z 258DEG 28KT 4028 8952 4007 8942 3992 8950
HAIL...<.75IN
WIND...60MPH
$$
Barnes090
WWUS53 KILX 152137
SVSILX
Severe Weather Statement
National Weather Service Lincoln IL
437 PM CDT Thu Jul 15 2021
ILC107-167-152147-
/O.EXP.KILX.SV.W.0075.000000T0000Z-210715T2145Z/
Logan-Sangamon-
437 PM CDT Thu Jul 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR LOGAN AND NORTHEASTERN
SANGAMON COUNTIES WILL EXPIRE AT 445 PM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4028 8921 4008 8919 3989 8923 3988 8963
4003 8954 4027 8959
TIME...MOT...LOC 2137Z 260DEG 32KT 4032 8920 4011 8911 3996 8919
$$
BarnesThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 4:52 AM CDT | Flash Flood Warning | ILX | Marshall, Peoria, Stark, Woodford | 5 hr |
| Jul 15, 12:48 PM CDT | Special Weather Statement | ILX | Christian, Clark, Coles, Cumberland, Douglas, Edgar and 6 more | 117 min |
| Jul 15, 1:40 PM CDT | Tornado Warning | ILX | Coles | 34 min |
| Jul 15, 4:19 PM CDT | Special Weather Statement | ILX | DeWitt | 41 min |
| Jul 15, 4:43 PM CDT | Areal Flood Advisory | ILX | McLean | 3 hr |
| Jul 15, 4:52 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, McLean, Macon, Piatt | 38 min |
| Jul 15, 5:01 PM CDT | Flash Flood Warning | ILX | DeWitt, McLean | 3 hr |
| Jul 15, 5:26 PM CDT | Special Weather Statement | ILX | Champaign | 64 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.