Alert archive / Illinois / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 252, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 15, 2026, 6:50 PM CDT for Adams County, Pike County, 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 outline as issued.
The facts
- Issued
- Sep 15, 2026, 6:50 PM CDT (23:50 UTC)
- Expired
- Sep 15, 2026, 7:26 PM CDT
- In force
- 36 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Adams County, IL, Pike County, IL
The radar
The St Louis radar (KLSX), 126 km from the middle of the area, began a volume at 23:52 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, 11.8 hours before the alert went out and 233 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
- 505 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 1193 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 316 m²/s²
- 0-3 km storm-relative helicity
- 323 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted.
769
WUUS53 KLSX 152350
SVRLSX
ILC001-149-160030-
/O.NEW.KLSX.SV.W.0252.260915T2350Z-260916T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
650 PM CDT Tue Sep 15 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
South Central Adams County in west central Illinois...
Northwestern Pike County in west central Illinois...
* Until 730 PM CDT.
* At 650 PM CDT, a severe thunderstorm was located 5 miles south of
Fall Creek, or 5 miles east of Hannibal, moving east 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.
* Locations impacted include...
Fall Creek, Seehorn, Hull, Plainville, Kinderhook and Richfield.
This includes the following State Parks...
Fall Creek Scenic Overlook State Natural Area.
This includes Interstate 72 between exits 4 and 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 3976 9135 3978 9135 3983 9111 3966 9110
3967 9128 3969 9132 3971 9134
TIME...MOT...LOC 2350Z 264DEG 14KT 3970 9129
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler3 follow-up statements
480
WWUS53 KLSX 160002
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
702 PM CDT Tue Sep 15 2026
ILC001-149-160030-
/O.CON.KLSX.SV.W.0252.000000T0000Z-260916T0030Z/
Adams IL-Pike IL-
702 PM CDT Tue Sep 15 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTH CENTRAL ADAMS AND NORTHWESTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS...
At 702 PM CDT, a severe thunderstorm was located 8 miles south of
Payson, or 10 miles east of Hannibal, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Seehorn, Hull, Plainville and Kinderhook.
This includes Interstate 72 near exit 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
&&
LAT...LON 3968 9128 3977 9127 3980 9111 3966 9110
TIME...MOT...LOC 2350Z 265DEG 16KT 3970 9127
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler593
WWUS53 KLSX 160013
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
713 PM CDT Tue Sep 15 2026
ILC001-160023-
/O.CAN.KLSX.SV.W.0252.000000T0000Z-260916T0030Z/
Adams IL-
713 PM CDT Tue Sep 15 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTH CENTRAL ADAMS
COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3968 9117 3976 9118 3976 9111 3972 9110
3967 9110
TIME...MOT...LOC 0002Z 266DEG 16KT 3971 9120
$$
ILC149-160030-
/O.CON.KLSX.SV.W.0252.000000T0000Z-260916T0030Z/
Pike IL-
713 PM CDT Tue Sep 15 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTH CENTRAL PIKE COUNTY IN WEST CENTRAL ILLINOIS...
At 713 PM CDT, a severe thunderstorm was located near Barry, or 14
miles east of Hannibal, moving east at 20 mph.
HAZARD...60 mph wind gusts and small hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kinderhook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds.
&&
LAT...LON 3968 9117 3976 9118 3976 9111 3972 9110
3967 9110
TIME...MOT...LOC 0002Z 269DEG 15KT 3971 9118
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Pfahler838
WWUS53 KLSX 160026
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
726 PM CDT Tue Sep 15 2026
ILC149-160036-
/O.CAN.KLSX.SV.W.0252.000000T0000Z-260916T0030Z/
Pike IL-
726 PM CDT Tue Sep 15 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTH CENTRAL PIKE
COUNTY IN WEST CENTRAL ILLINOIS...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
&&
LAT...LON 3968 9117 3976 9118 3976 9111 3972 9110
3967 9110
TIME...MOT...LOC 0013Z 269DEG 15KT 3971 9112
$$
PfahlerThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 6:13 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 47 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2026Every severe thunderstorm warning in 2026
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.