Alert archive / Illinois / Tornado Warnings in 2020
Tornado Warning 8, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jul 15, 2020, 5:13 PM CDT for 4 counties in Illinois. It was in force for 25 min. 2 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
- Jul 15, 2020, 5:13 PM CDT (22:13 UTC)
- Expired
- Jul 15, 2020, 5:38 PM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Clinton County, IL, Monroe County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 89 km from the middle of the area, began a volume at 22:16 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 |
|---|---|---|---|
| Jul 15, 5:16 PM CDT | TSTM WND DMG | 1 E Paderborn, IL | IMAGES FROM SOCIAL MEDIA SHOW ONE MACHINE SHED DESTROYED AND ANOTHER DAMAGED AT AND NEAR THIS LOCATION. SEVERAL POWER LINE POLES WERE SNAPPED ALONG KNAB RD. NEAR THIS LOCATION. TIME ESTIMATED FROM RADAR. |
| Jul 15, 5:16 PM CDT | TSTM WND DMG | 3 E Paderborn, IL | A FEW PINE TREES WERE BLOWN OVER OR HAD THEIR TOPS SNAPPED OFF. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Jul 15, 2:10 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.2 hours before the alert went out and 224 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
- 1529 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
459
WFUS53 KLSX 152213
TORLSX
ILC027-133-163-189-152300-
/O.NEW.KLSX.TO.W.0008.200715T2213Z-200715T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
513 PM CDT Wed Jul 15 2020
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southwestern Clinton County in south central Illinois...
East central Monroe County in southwestern Illinois...
Western Washington County in south central Illinois...
Southeastern St. Clair County in southwestern Illinois...
* Until 600 PM CDT.
* At 513 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Smithton, 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...
Freeburg around 525 PM CDT.
New Athens around 530 PM CDT.
New Memphis around 555 PM CDT.
Okawville around 600 PM CDT.
Other locations impacted by this tornadic thunderstorm include St.
Libory, Fayetteville, Lenzburg, Johannisburg, Venedy, Floraville,
Hecker, Paderborn, Elkton and Stone Church.
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 3824 8955 3829 9010 3845 9007 3850 8953
TIME...MOT...LOC 2213Z 260DEG 26KT 3838 9003
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Glass3 follow-up statements
055
WWUS53 KLSX 152222
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
522 PM CDT Wed Jul 15 2020
ILC027-133-163-189-152300-
/O.CON.KLSX.TO.W.0008.000000T0000Z-200715T2300Z/
Clinton IL-Monroe IL-Washington IL-St. Clair IL-
522 PM CDT Wed Jul 15 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHWESTERN CLINTON...EAST CENTRAL MONROE...WESTERN WASHINGTON AND
SOUTHEASTERN ST. CLAIR COUNTIES...
At 522 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Freeburg, moving east at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
New Memphis around 540 PM CDT.
Lively Grove around 545 PM CDT.
Okawville around 550 PM CDT.
Other locations impacted by this tornadic thunderstorm include St.
Libory, Fayetteville, Lenzburg, Johannisburg, Venedy, Hecker, Elkton
and Stone Church.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3827 8955 3828 8998 3828 9002 3846 8991
3850 8953
TIME...MOT...LOC 2222Z 263DEG 35KT 3837 8991
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Glass470
WWUS53 KLSX 152234
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
534 PM CDT Wed Jul 15 2020
ILC133-152243-
/O.CAN.KLSX.TO.W.0008.000000T0000Z-200715T2300Z/
Monroe IL-
534 PM CDT Wed Jul 15 2020
...THE TORNADO WARNING FOR EAST CENTRAL MONROE COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been
cancelled.
A Tornado Watch remains in effect until 900 PM CDT for south central
and southwestern Illinois.
LAT...LON 3827 8955 3828 8987 3830 8986 3848 8975
3849 8958 3850 8953
TIME...MOT...LOC 2233Z 259DEG 29KT 3840 8974
$$
ILC027-163-189-152300-
/O.CON.KLSX.TO.W.0008.000000T0000Z-200715T2300Z/
Clinton IL-Washington IL-St. Clair IL-
534 PM CDT Wed Jul 15 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHWESTERN CLINTON...WESTERN WASHINGTON AND SOUTHEASTERN ST. CLAIR
COUNTIES...
At 533 PM CDT, a severe thunderstorm capable of producing a tornado
was located near New Memphis, moving east at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
New Memphis around 540 PM CDT.
Okawville around 555 PM CDT.
Other locations impacted by this tornadic thunderstorm include St.
Libory, Fayetteville, Lenzburg, Johannisburg, Venedy, Elkton and
Stone Church.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3827 8955 3828 8987 3830 8986 3848 8975
3849 8958 3850 8953
TIME...MOT...LOC 2233Z 259DEG 29KT 3840 8974
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Glass496
WWUS53 KLSX 152238
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
538 PM CDT Wed Jul 15 2020
ILC027-163-189-152248-
/O.CAN.KLSX.TO.W.0008.000000T0000Z-200715T2300Z/
Clinton IL-Washington IL-St. Clair IL-
538 PM CDT Wed Jul 15 2020
...THE TORNADO WARNING FOR SOUTHWESTERN CLINTON...WESTERN WASHINGTON
AND SOUTHEASTERN ST. CLAIR COUNTIES IS CANCELLED...
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 900 PM CDT for south central
and southwestern Illinois.
LAT...LON 3827 8955 3828 8987 3830 8986 3848 8975
3849 8958 3850 8953
TIME...MOT...LOC 2236Z 260DEG 26KT 3841 8969
$$
GlassThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 9:56 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 49 min |
| Jul 15, 2:26 PM CDT | Flash Flood Warning | LSX | Adams | 5 hr |
| Jul 15, 4:20 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 40 min |
| Jul 15, 4:38 PM CDT | Tornado Warning | LSX | Macoupin, Montgomery | 23 min |
| Jul 15, 4:48 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Macoupin, Montgomery | 42 min |
| Jul 15, 4:58 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 47 min |
| Jul 15, 5:02 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Macoupin, Montgomery | 43 min |
| Jul 15, 5:19 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison | 41 min |
| Jul 15, 5:30 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 45 min |
| Jul 15, 5:35 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 40 min |
| Jul 15, 5:43 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 47 min |
| Jul 15, 5:46 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 44 min |
| Jul 15, 6:01 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Marion | 44 min |
| Jul 15, 6:10 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 50 min |
Nearby
Tornado Warnings in Illinois, 2020Every tornado warning in 2020Tornadoes in 2020
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.