Alert archive / Illinois / Tornado Warnings in 2024
Tornado Warning 35, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 18, 2024, 5:49 PM CDT for City of Saint Louis, Missouri; Monroe County, Saint Clair County, Illinois. It was in force for 41 min. 5 reports 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 18, 2024, 5:49 PM CDT (22:49 UTC)
- Expired
- Apr 18, 2024, 6:30 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Monroe County, IL, Saint Clair County, IL, City of Saint Louis, MO
The radar
The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 22:51 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 18, 5:57 PM CDT | TSTM WND DMG | 1 Sw Dupo, IL | Report from mPING: 3-inch tree limbs broken; Power poles broken. |
| Apr 18, 5:57 PM CDT | TSTM WND DMG | 2 Nw Columbia, IL | Report from mPING: 1-inch tree limbs broken; Shingles blown off. |
| Apr 18, 5:58 PM CDT | TORNADO | 1 Se Cahokia, IL | The tornado touched down near the western edge of the Prairies of Cahokia Golf Course and moved east for about 1.1 miles where it lifted near the intersection of Carol Rd and Lynn St. Damage consisted of uprooted trees and broken tree limbs. Estimated peak win |
| Apr 18, 6:15 PM CDT | TSTM WND DMG | 2 Ese Centreville, IL | Downed tree and powerlines. |
| Apr 18, 6:19 PM CDT | TSTM WND DMG | 1 Nw Fairview Heights, IL | Report from mPING: 3-inch tree limbs broken; Power poles broken. |
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 18, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 230 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
- 1827 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
499
WFUS53 KLSX 182249
TORLSX
ILC133-163-MOC510-182330-
/O.NEW.KLSX.TO.W.0035.240418T2249Z-240418T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
549 PM CDT Thu Apr 18 2024
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Northwestern Monroe County in southwestern Illinois...
Northwestern St. Clair County in southwestern Illinois...
Southern St. Louis City in east central Missouri...
* Until 630 PM CDT.
* At 549 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Sappington, moving east at 30 mph.
HAZARD...Tornado.
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 dangerous storm will be near...
St. Louis and East Carondelet around 555 PM CDT.
Cahokia, Columbia, and Dupo around 600 PM CDT.
Cahokia Parks Airport around 605 PM CDT.
Other locations in the path of this tornadic thunderstorm include
East St. Louis, Centreville, Belleville, Alorton, Fairview Heights,
Caseyville and Washington Park.
This also includes Scott Joplin Historic Site.
This includes Interstate 64 in Illinois near exit 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3840 8999 3838 9035 3840 9034 3842 9030
3844 9029 3853 9026 3854 9027 3855 9027
3858 9031 3866 9018 3866 9000
TIME...MOT...LOC 2249Z 261DEG 25KT 3852 9038
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
CVKING1 follow-up statement
771
WWUS53 KLSX 182259
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
559 PM CDT Thu Apr 18 2024
MOC510-182308-
/O.CAN.KLSX.TO.W.0035.000000T0000Z-240418T2330Z/
St. Louis City MO-
559 PM CDT Thu Apr 18 2024
...THE TORNADO WARNING FOR SOUTHERN ST. LOUIS CITY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
southwestern Illinois...and east central Missouri.
&&
LAT...LON 3840 8999 3839 9027 3853 9022 3856 9023
3859 9021 3859 9019 3863 9018 3866 9018
3866 9000
TIME...MOT...LOC 2258Z 261DEG 25KT 3853 9029
$$
ILC133-163-182330-
/O.CON.KLSX.TO.W.0035.000000T0000Z-240418T2330Z/
Monroe IL-St. Clair IL-
559 PM CDT Thu Apr 18 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR NORTH
CENTRAL MONROE AND NORTHWESTERN ST. CLAIR COUNTIES...
At 558 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Lemay, moving east at 30 mph.
HAZARD...Tornado.
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 dangerous storm will be near...
Cahokia, Columbia, Dupo, and Cahokia Parks Airport around 605 PM
CDT.
Other locations in the path of this tornadic thunderstorm include
East St. Louis, Centreville, Alorton, Belleville, Fairview Heights,
Caseyville and Swansea.
This includes Interstate 64 in Illinois near exit 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3840 8999 3839 9027 3853 9022 3856 9023
3859 9021 3859 9019 3863 9018 3866 9018
3866 9000
TIME...MOT...LOC 2258Z 261DEG 25KT 3853 9029
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 2:42 PM CDT | Severe Thunderstorm Warning | LSX | Pike, Ralls | 63 min |
| Apr 18, 2:42 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone | 48 min |
| Apr 18, 3:00 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 30 min |
| Apr 18, 3:20 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Montgomery, Pike | 40 min |
| Apr 18, 3:21 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 39 min |
| Apr 18, 3:53 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 52 min |
| Apr 18, 3:57 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 48 min |
| Apr 18, 4:09 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 51 min |
| Apr 18, 4:16 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 44 min |
| Apr 18, 4:40 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 50 min |
| Apr 18, 4:48 PM CDT | Tornado Warning | LSX | Lincoln, Saint Charles | 42 min |
| Apr 18, 4:58 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 47 min |
| Apr 18, 5:04 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 56 min |
| Apr 18, 5:12 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis | 48 min |
| Apr 18, 5:25 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 65 min |
| Apr 18, 5:33 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 25 min |
| Apr 18, 5:37 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Iron, Jefferson, Saint Francois, Washington | 53 min |
| Apr 18, 5:39 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 66 min |
| Apr 18, 6:13 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 77 min |
| Apr 18, 6:34 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 41 min |
| Apr 18, 3:23 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 52 min |
| Apr 18, 3:49 PM CDT | Tornado Warning | LSX | Pike | 26 min |
| Apr 18, 4:03 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 57 min |
| Apr 18, 4:25 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene | 50 min |
| Apr 18, 4:47 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 58 min |
| Apr 18, 4:52 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey | 38 min |
| Apr 18, 5:01 PM CDT | Tornado Warning | LSX | Greene, Macoupin | 29 min |
| Apr 18, 5:07 PM CDT | Tornado Warning | LSX | Greene, Jersey | 23 min |
| Apr 18, 5:18 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Madison | 27 min |
| Apr 18, 5:26 PM CDT | Tornado Warning | LSX | Macoupin | 34 min |
| Apr 18, 5:30 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 60 min |
| Apr 18, 5:34 PM CDT | Tornado Warning | LSX | Greene, Jersey, Macoupin | 26 min |
| Apr 18, 5:45 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 45 min |
| Apr 18, 5:45 PM CDT | Tornado Warning | LSX | Madison | 45 min |
| Apr 18, 5:53 PM CDT | Areal Flood Advisory | LSX | Greene, Macoupin | 2 hr |
| Apr 18, 5:56 PM CDT | Tornado Warning | LSX | Macoupin, Madison | 49 min |
| Apr 18, 5:59 PM CDT | Tornado Warning | LSX | Macoupin | 31 min |
| Apr 18, 6:10 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison, Saint Clair, Washington | 65 min |
| Apr 18, 6:14 PM CDT | Tornado Warning | LSX | Montgomery | 46 min |
| Apr 18, 6:41 PM CDT | Tornado Warning | LSX | Fayette | 49 min |
Nearby
Tornado Warnings in Illinois, 2024Tornado Warnings in Missouri, 2024Every tornado warning in 2024Tornadoes in 2024
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.