Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 98, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 25, 2021, 12:57 AM CDT for 5 counties in Illinois; Lincoln County, Pike County, Missouri. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2021, 12:57 AM CDT (05:57 UTC)
- Expired
- Jun 25, 2021, 1:45 AM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Pike County, IL, Lincoln County, MO, Pike County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 05:58 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 |
|---|---|---|---|
| Jun 24, 8:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 11:47 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 6.0 hours before the alert went out and 185 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
- 263 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 875 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 444 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.5
The text
As transmitted.
772
WUUS53 KLSX 250557
SVRLSX
ILC009-013-061-083-149-MOC113-163-250645-
/O.NEW.KLSX.SV.W.0098.210625T0557Z-210625T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1257 AM CDT Fri Jun 25 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Calhoun County in southwestern Illinois...
Greene County in southwestern Illinois...
Pike County in west central Illinois...
Brown County in west central Illinois...
Western Jersey County in southwestern Illinois...
Lincoln County in east central Missouri...
Southeastern Pike County in northeastern Missouri...
* Until 145 AM CDT.
* At 1257 AM CDT, severe thunderstorms were located along a line
extending from 7 miles southwest of Littleton to 8 miles east of
Pleasant Hill to near Hawk Point, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
White Hall, Roodhouse, Winfield, Athensville and Grafton.
This includes Interstate 72 between exits 31 and 35.
This also includes Cuivre River State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 400 AM CDT for southwestern
and west central Illinois...and northeastern and east central
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4005 9067 4002 9063 4003 9061 3998 9060
3997 9051 3988 9058 3983 9057 3971 9065
3952 9058 3952 9015 3937 9015 3898 9038
3902 9126 3911 9126 3951 9100 3976 9093
3976 9091 3983 9092 4010 9084 4010 9071
TIME...MOT...LOC 0557Z 268DEG 36KT 4015 9072 3948 9071 3902 9110
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
192 follow-up statements
754
WWUS53 KLSX 250627
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
127 AM CDT Fri Jun 25 2021
ILC009-149-250636-
/O.CAN.KLSX.SV.W.0098.000000T0000Z-210625T0645Z/
Pike IL-Brown IL-
127 AM CDT Fri Jun 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR PIKE AND BROWN COUNTIES IN
WEST CENTRAL ILLINOIS IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 400 AM CDT for southwestern
and west central Illinois...and northeastern and east central
Missouri.
LAT...LON 3952 9015 3937 9015 3898 9038 3901 9105
3940 9069 3940 9061 3952 9058
TIME...MOT...LOC 0626Z 274DEG 29KT 3964 9024 3914 9063 3901 9073
$$
ILC013-061-083-MOC113-163-250645-
/O.CON.KLSX.SV.W.0098.000000T0000Z-210625T0645Z/
Calhoun IL-Greene IL-Jersey IL-Lincoln MO-Pike MO-
127 AM CDT Fri Jun 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR CALHOUN...GREENE AND WESTERN JERSEY COUNTIES IN SOUTHWESTERN
ILLINOIS...NORTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI AND
SOUTHEASTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI...
At 126 AM CDT, severe thunderstorms were located along a line
extending from Woodson to Hardin to Winfield, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jerseyville, White Hall, Elsberry, Carrollton, Roodhouse, Winfield,
Greenfield, Hardin, Grafton, Athensville, Old Kane, Patterson, Kane,
Kampsville, Wrights, Fieldon, Batchtown, Eldred, Hillview and
Rockbridge.
This also includes Cuivre River State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 400 AM CDT for southwestern
and west central Illinois...and northeastern and east central
Missouri.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3952 9015 3937 9015 3898 9038 3901 9105
3940 9069 3940 9061 3952 9058
TIME...MOT...LOC 0626Z 274DEG 29KT 3964 9024 3914 9063 3901 9073
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
19843
WWUS53 KLSX 250643
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
143 AM CDT Fri Jun 25 2021
ILC013-061-083-MOC113-163-250653-
/O.EXP.KLSX.SV.W.0098.000000T0000Z-210625T0645Z/
Calhoun IL-Greene IL-Jersey IL-Lincoln MO-Pike MO-
143 AM CDT Fri Jun 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR CALHOUN...GREENE AND WESTERN
JERSEY COUNTIES IN SOUTHWESTERN ILLINOIS...NORTHEASTERN LINCOLN
COUNTY IN EAST CENTRAL MISSOURI AND SOUTHEASTERN PIKE COUNTIES IN
NORTHEASTERN MISSOURI WILL EXPIRE AT 145 AM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Tornado Watch remains in effect until 400 AM CDT for southwestern
Illinois...and northeastern and east central Missouri.
LAT...LON 3952 9015 3937 9015 3898 9038 3901 9105
3940 9069 3940 9061 3952 9058
TIME...MOT...LOC 0643Z 268DEG 36KT 3964 9002 3915 9042 3902 9052
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 8:11 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 49 min |
| Jun 24, 8:42 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Jun 24, 11:29 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 46 min |
| Jun 25, 12:03 AM CDT | Tornado Warning | LSX | Adams, Pike | 42 min |
| Jun 25, 12:17 AM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Calhoun, Pike | 43 min |
| Jun 24, 10:57 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Shelby | 48 min |
| Jun 24, 11:03 PM CDT | Tornado Warning | LSX | Monroe, Shelby | 42 min |
| Jun 24, 11:32 PM CDT | Tornado Warning | LSX | Lewis | 28 min |
| Jun 24, 11:35 PM CDT | Tornado Warning | LSX | Audrain, Monroe, Ralls | 40 min |
| Jun 24, 11:40 PM CDT | Tornado Warning | LSX | Marion, Monroe, Ralls, Shelby | 38 min |
| Jun 25, 12:09 AM CDT | Tornado Warning | LSX | Audrain, Pike, Ralls | 51 min |
| Jun 25, 1:27 AM CDT | River Flood Warning | LSX | Boone | 33 hr |
| Jun 25, 1:54 AM CDT | Areal Flood Advisory | LSX | Montgomery | 3 hr |
| Jun 25, 2:21 AM CDT | Areal Flood Advisory | LSX | Audrain, Boone, Callaway | 106 min |
| Jun 25, 3:07 AM CDT | Areal Flood Advisory | LSX | Boone, Callaway, Cole, Moniteau | 82 min |
| Jun 25, 3:34 AM CDT | Flash Flood Warning | LSX | Boone | 6 hr |
| Jun 25, 4:04 AM CDT | Flash Flood Warning | LSX | Audrain, Boone, Callaway | 6 hr |
| Jun 25, 4:26 AM CDT | Flash Flood Warning | LSX | Boone, Callaway, Cole, Moniteau | 6 hr |
| Jun 25, 4:28 AM CDT | Flash Flood Warning | LSX | Callaway, Lincoln, Montgomery, Osage, Warren | 6 hr |
| Jun 25, 7:48 AM CDT | River Flood Warning | LSX | Lincoln | 62 hr |
| Jun 25, 8:25 AM CDT | Areal Flood Warning | LSX | Audrain, Boone, Callaway, Cole, Moniteau | 9 hr |
| Jun 25, 10:06 AM CDT | River Flood Warning | LSX | Franklin, Warren | 9 days |
| Jun 25, 10:06 AM CDT | River Flood Warning | LSX | Saint Charles, Saint Louis | 21 days |
| Jun 25, 10:06 AM CDT | River Flood Warning | LSX | Boone, Callaway, Cole, Moniteau | 8 days |
| Jun 25, 10:06 AM CDT | River Flood Warning | LSX | Callaway, Osage | 21 days |
| Jun 25, 10:06 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 10 days |
| Jun 25, 4:59 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Osage | 20 min |
| Jun 25, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Moniteau | 44 min |
| Jun 25, 5:05 PM CDT | River Flood Warning | LSX | Cole, Osage | 9 days |
| Jun 25, 5:42 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway | 22 min |
| Jun 25, 6:07 PM CDT | River Flood Warning | LSX | Lincoln | 3 days |
| Jun 25, 6:36 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 39 min |
| Jun 25, 6:43 PM CDT | Flash Flood Warning | LSX | Audrain, Boone, Callaway | 6 hr |
| Jun 25, 6:48 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 42 min |
| Jun 25, 6:55 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway | 19 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Severe Thunderstorm Warnings in Missouri, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.