Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 56, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 12, 2021, 6:43 PM CDT for Montgomery County, Illinois. It was in force for 47 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 12, 2021, 6:43 PM CDT (23:43 UTC)
- Expired
- Jun 12, 2021, 7:30 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Montgomery County, IL
The radar
The Lincoln radar (KILX), 98 km from the middle of the area, began a volume at 23:45 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 111 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
- 897 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1584 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
724
WUUS53 KLSX 122343
SVRLSX
ILC135-130030-
/O.NEW.KLSX.SV.W.0056.210612T2343Z-210613T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
643 PM CDT Sat Jun 12 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
East central Montgomery County in south central Illinois...
* Until 730 PM CDT.
* At 643 PM CDT, a severe thunderstorm was located near Pana, moving
southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
east central Montgomery County, including the following
locations... Ohlman and Wenonah.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3922 8925 3935 8933 3935 8914 3922 8914
TIME...MOT...LOC 2343Z 320DEG 15KT 3933 8916
HAIL...1.00IN
WIND...60MPH
$$
BSH3 follow-up statements
065
WWUS53 KLSX 122353
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
653 PM CDT Sat Jun 12 2021
ILC135-130030-
/O.CON.KLSX.SV.W.0056.000000T0000Z-210613T0030Z/
Montgomery IL-
653 PM CDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EAST CENTRAL MONTGOMERY COUNTY...
At 652 PM CDT, a severe thunderstorm was located near Pana, moving
southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters reported tree damage in Pana.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Nokomis, Ohlman and Wenonah.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3922 8925 3935 8933 3935 8914 3922 8914
TIME...MOT...LOC 2352Z 320DEG 15KT 3930 8913
HAIL...1.00IN
WIND...60MPH
$$
BSH192
WWUS53 KLSX 130008
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
708 PM CDT Sat Jun 12 2021
ILC135-130030-
/O.CON.KLSX.SV.W.0056.000000T0000Z-210613T0030Z/
Montgomery IL-
708 PM CDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EAST CENTRAL MONTGOMERY COUNTY...
At 708 PM CDT, a severe thunderstorm was located 7 miles north of
Ramsey, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters reported tree damage in Pana.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of east
central Montgomery County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3922 8925 3929 8929 3932 8914 3922 8914
TIME...MOT...LOC 0008Z 320DEG 15KT 3925 8907
HAIL...1.00IN
WIND...60MPH
$$
BSH972
WWUS53 KLSX 130026
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
726 PM CDT Sat Jun 12 2021
ILC135-130036-
/O.EXP.KLSX.SV.W.0056.000000T0000Z-210613T0030Z/
Montgomery IL-
726 PM CDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONTGOMERY COUNTY
WILL EXPIRE AT 730 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 3922 8925 3929 8929 3932 8914 3922 8914
TIME...MOT...LOC 0026Z 320DEG 15KT 3920 8901
$$
BSHNearby
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.