Alert archive / Illinois / Tornado Warnings in 2025
Tornado Warning 46, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 20, 2025, 6:56 PM CDT for Brown County, Pike County, Illinois. It was in force for 28 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
- Apr 20, 2025, 6:56 PM CDT (23:56 UTC)
- Expired
- Apr 20, 2025, 7:24 PM CDT
- In force
- 28 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Brown County, IL, Pike County, IL
The radar
The Lincoln radar (KILX), 115 km from the middle of the area, began a volume at 23:58 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 |
|---|---|---|---|
| Apr 20, 3:41 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 175 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
- 1064 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
145
WFUS53 KLSX 202356
TORLSX
ILC009-149-210045-
/O.NEW.KLSX.TO.W.0046.250420T2356Z-250421T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
656 PM CDT Sun Apr 20 2025
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southeastern Brown County in west central Illinois...
Northeastern Pike County in west central Illinois...
* Until 745 PM CDT.
* At 656 PM CDT, a severe thunderstorm capable of producing a
tornado was located near Pittsfield, 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.
* This tornado will be near...
Pittsfield around 700 PM CDT.
Griggsville around 705 PM CDT.
Other locations impacted by the tornado include New Salem, Detroit,
Baylis, Perry, Valley City, Chambersburg, Versailles and La Grange.
This includes Interstate 72 between exits 31 and 35.
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 3998 9060 3998 9051 3997 9051 3995 9053
3991 9054 3989 9057 3987 9059 3983 9057
3979 9060 3976 9061 3970 9065 3964 9061
3962 9060 3952 9077 3972 9096
TIME...MOT...LOC 2356Z 231DEG 41KT 3965 9083
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
193 follow-up statements
251
WWUS53 KLSX 210006
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
706 PM CDT Sun Apr 20 2025
ILC009-149-210045-
/O.CON.KLSX.TO.W.0046.000000T0000Z-250421T0045Z/
Brown IL-Pike IL-
706 PM CDT Sun Apr 20 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS...
At 706 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles north of Griggsville, or 14 miles northeast of
Pittsfield, moving northeast at 60 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
This tornado will be near...
Griggsville around 700 PM CDT.
Other locations impacted by the tornado include Perry, Valley City,
Chambersburg, Versailles, La Grange and Coopertown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 3998 9060 3998 9051 3997 9051 3995 9053
3991 9054 3989 9057 3987 9059 3983 9057
3979 9060 3976 9061 3970 9065 3964 9061
3962 9060 3958 9067 3981 9083
TIME...MOT...LOC 2356Z 224DEG 50KT 3970 9081
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
19366
WWUS53 KLSX 210017
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
717 PM CDT Sun Apr 20 2025
ILC149-210027-
/O.CAN.KLSX.TO.W.0046.000000T0000Z-250421T0045Z/
Pike IL-
717 PM CDT Sun Apr 20 2025
...TORNADO WARNING IS CANCELLED FOR NORTHEASTERN PIKE COUNTY IN WEST
CENTRAL ILLINOIS...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and
a Severe Thunderstorm Warning remains in effect for the area.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
west central Illinois.
&&
LAT...LON 3996 9052 3995 9053 3993 9054 3991 9054
3990 9056 3987 9059 3984 9057 3984 9068
3998 9060 3998 9051 3997 9051
TIME...MOT...LOC 0006Z 224DEG 50KT 3979 9068
$$
ILC009-210045-
/O.CON.KLSX.TO.W.0046.000000T0000Z-250421T0045Z/
Brown IL-
717 PM CDT Sun Apr 20 2025
...TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN BROWN COUNTY...
At 717 PM CDT, a severe thunderstorm capable of producing a tornado
was located 13 miles southeast of Mount Sterling, or 25 miles
northeast of Pittsfield, moving northeast at 60 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows and vehicles will occur. Tree
damage is likely.
Other locations impacted by the tornado include Versailles, La
Grange and Coopertown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built
building away from windows. If you are outdoors, in a mobile home,
or in a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 3996 9052 3995 9053 3993 9054 3991 9054
3990 9056 3987 9059 3984 9057 3984 9068
3998 9060 3998 9051 3997 9051
TIME...MOT...LOC 0006Z 224DEG 50KT 3979 9068
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
19824
WWUS53 KLSX 210024
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
724 PM CDT Sun Apr 20 2025
ILC009-210034-
/O.CAN.KLSX.TO.W.0046.000000T0000Z-250421T0045Z/
Brown IL-
724 PM CDT Sun Apr 20 2025
...TORNADO WARNING IS CANCELLED FOR SOUTHEASTERN BROWN COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with this thunderstorm.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
west central Illinois.
&&
LAT...LON 3996 9052 3995 9053 3993 9054 3991 9054
3990 9056 3987 9059 3984 9057 3984 9068
3998 9060 3998 9051 3997 9051
TIME...MOT...LOC 0017Z 224DEG 50KT 3991 9054
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 6:11 PM CDT | Tornado Warning | LSX | Pike | 49 min |
| Apr 20, 6:15 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 60 min |
| Apr 20, 6:27 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Calhoun, Pike | 63 min |
| Apr 20, 6:49 PM CDT | Tornado Warning | LSX | Adams | 41 min |
| Apr 20, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Madison | 64 min |
| Apr 20, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 62 min |
Nearby
Tornado Warnings in Illinois, 2025Every tornado warning in 2025Tornadoes in 2025
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.