Alert archive / Illinois / Tornado Warnings in 2026
Tornado Warning 47, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 27, 2026, 6:01 PM CDT for Jersey County, Macoupin County, Illinois. It was in force for 44 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
- Apr 27, 2026, 6:01 PM CDT (23:01 UTC)
- Expired
- Apr 27, 2026, 6:45 PM CDT
- In force
- 44 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Jersey County, IL, Macoupin County, IL
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 23:02 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 |
|---|---|---|---|
| Apr 27, 6:20 PM CDT | TSTM WND DMG | Medora, IL | Shed collapsed. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 27, 12:50 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.0 hours before the alert went out and 177 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1053 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
172
WFUS53 KLSX 272301
TORLSX
ILC083-117-272345-
/O.NEW.KLSX.TO.W.0047.260427T2301Z-260427T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
601 PM CDT Mon Apr 27 2026
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Eastern Jersey County in southwestern Illinois...
Central Macoupin County in southwestern Illinois...
* Until 645 PM CDT.
* At 601 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Jerseyville, moving northeast at 50 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
* Locations impacted include...
Otterville, Jerseyville, Delhi, Brighton, Fidelity, Piasa, Miles
Station, Medora, Kemper, Shipman, Chesterfield, Plainview, Royal
Lakes, Dorchester, Mount Clare, Gillespie, Carlinville, East
Gillespie, Eagarville and Standard City.
This includes the following State Parks...
Beaver Dam State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 3900 9042 3913 9048 3917 9035 3917 9031
3919 9031 3939 8970 3912 8970
TIME...MOT...LOC 2301Z 246DEG 44KT 3908 9036
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Elmore3 follow-up statements
128
WWUS53 KLSX 272313 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
613 PM CDT Mon Apr 27 2026
ILC083-117-272345-
/O.CON.KLSX.TO.W.0047.000000T0000Z-260427T2345Z/
Jersey IL-Macoupin IL-
613 PM CDT Mon Apr 27 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
NORTHEASTERN JERSEY AND CENTRAL MACOUPIN COUNTIES...
At 613 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles south of Kemper, or 8 miles east of Jerseyville,
moving northeast at 50 mph.
HAZARD...Tornado and ping pong ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Jerseyville, Brighton, Fidelity, Piasa, Miles Station, Medora,
Kemper, Shipman, Chesterfield, Plainview, Royal Lakes, Dorchester,
Mount Clare, Gillespie, Carlinville, East Gillespie, Eagarville,
Hornsby, Atwater and Standard City.
This includes the following State Parks...
Beaver Dam State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 3902 9030 3917 9033 3917 9031 3919 9031
3939 8970 3912 8970
TIME...MOT...LOC 2301Z 246DEG 44KT 3908 9036
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
$$
Elmore521
WWUS53 KLSX 272338
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
638 PM CDT Mon Apr 27 2026
ILC083-272348-
/O.CAN.KLSX.TO.W.0047.000000T0000Z-260427T2345Z/
Jersey IL-
638 PM CDT Mon Apr 27 2026
...TORNADO WARNING IS CANCELLED FOR NORTHEASTERN JERSEY COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for a portion of
southwest Illinois.
&&
LAT...LON 3907 9000 3920 8999 3939 8970 3912 8970
TIME...MOT...LOC 2313Z 246DEG 44KT 3914 9018
$$
ILC117-272345-
/O.CON.KLSX.TO.W.0047.000000T0000Z-260427T2345Z/
Macoupin IL-
638 PM CDT Mon Apr 27 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHEASTERN MACOUPIN COUNTY...
At 638 PM CDT, a severe thunderstorm capable of producing a tornado
was located near East Gillespie, or 5 miles north of Gillespie,
moving east at 50 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Plainview, Royal Lakes, Dorchester, Mount Clare, Carlinville,
Gillespie, East Gillespie, Eagarville, Hornsby and Atwater.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 3907 9000 3920 8999 3939 8970 3912 8970
TIME...MOT...LOC 2313Z 254DEG 44KT 3912 9017
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
$$
Elmore811 WWUS53 KLSX 272343 SVSLSX Severe Weather Statement National Weather Service St Louis MO 643 PM CDT Mon Apr 27 2026 ILC117-272353- /O.EXP.KLSX.TO.W.0047.000000T0000Z-260427T2345Z/ Macoupin IL- 643 PM CDT Mon Apr 27 2026 ...TORNADO WARNING WILL EXPIRE AT 645 PM CDT FOR SOUTHEASTERN MACOUPIN COUNTY... The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning will be allowed to expire. A Severe Thunderstorm Warning still remains in effect for Macoupin. A Tornado Watch remains in effect until 900 PM CDT for a portion of southwest Illinois. && LAT...LON 3907 9000 3920 8999 3939 8970 3912 8970 TIME...MOT...LOC 2338Z 254DEG 44KT 3920 8979 $$ Elmore
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 6:32 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 43 min |
| Apr 27, 7:03 AM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion, Washington | 57 min |
| Apr 27, 7:59 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin, Montgomery | 33 min |
| Apr 27, 8:10 AM CDT | Severe Thunderstorm Warning | LSX | Adams, Calhoun, Pike | 65 min |
| Apr 27, 8:24 AM CDT | Tornado Warning | LSX | Calhoun, Pike | 51 min |
| Apr 27, 8:57 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Pike | 48 min |
| Apr 27, 9:03 AM CDT | Tornado Warning | LSX | Greene, Pike | 42 min |
| Apr 27, 9:44 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 61 min |
| Apr 27, 10:29 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 61 min |
| Apr 27, 10:52 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 42 min |
| Apr 27, 11:18 AM CDT | Flood Watch | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 7 more | 10 hr |
| Apr 27, 12:09 PM CDT | Areal Flood Advisory | LSX | Calhoun | 3 hr |
| Apr 27, 12:27 PM CDT | Tornado Warning | LSX | Madison, Saint Clair | 48 min |
| Apr 27, 1:07 PM CDT | Flash Flood Warning | LSX | Fayette, Montgomery | 7 hr |
| Apr 27, 1:13 PM CDT | Tornado Warning | LSX | Madison | 47 min |
| Apr 27, 1:49 PM CDT | Tornado Warning | LSX | Bond, Madison | 14 min |
| Apr 27, 1:55 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 45 min |
| Apr 27, 2:01 PM CDT | Tornado Warning | LSX | Madison, Saint Clair | 27 min |
| Apr 27, 2:30 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison | 27 min |
| Apr 27, 3:05 PM CDT | River Flood Warning | LSX | Jackson, Randolph | 8 days |
| Apr 27, 3:13 PM CDT | River Flood Warning | LSX | Pike, Scott | 9 days |
| Apr 27, 3:14 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Madison | 46 min |
| Apr 27, 3:16 PM CDT | River Flood Warning | LSX | Fayette | 4 days |
| Apr 27, 3:19 PM CDT | Tornado Warning | LSX | Calhoun, Jersey, Madison | 41 min |
| Apr 27, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 44 min |
| Apr 27, 3:52 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 38 min |
| Apr 27, 4:20 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 55 min |
| Apr 27, 4:34 PM CDT | Tornado Warning | LSX | Adams, Brown | 29 min |
| Apr 27, 4:46 PM CDT | Tornado Warning | LSX | Calhoun, Pike | 44 min |
| Apr 27, 4:52 PM CDT | Flash Flood Warning | LSX | Adams, Pike | 4 hr |
| Apr 27, 5:20 PM CDT | Flash Flood Warning | LSX | Brown, Pike | 3 hr |
| Apr 27, 5:21 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 39 min |
| Apr 27, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 33 min |
| Apr 27, 5:32 PM CDT | Flash Flood Warning | LSX | Jersey | 5 hr |
| Apr 27, 5:32 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin | 43 min |
| Apr 27, 5:47 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 58 min |
| Apr 27, 5:50 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 40 min |
| Apr 27, 5:59 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 46 min |
| Apr 27, 6:09 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 21 min |
| Apr 27, 6:28 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Calhoun, Fayette, Jersey, Macoupin, Madison and 1 more | 47 min |
| Apr 27, 6:41 PM CDT | Tornado Warning | LSX | Calhoun, Jersey, Madison | 32 min |
| Apr 27, 6:47 PM CDT | Flash Flood Warning | LSX | Macoupin | 5 hr |
Nearby
Tornado Warnings in Illinois, 2026Every tornado warning in 2026Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.