Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 5, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Mar 27, 2021, 7:13 PM CDT for Clinton County, Saint Clair County, Washington County, Illinois. It was in force for 47 min. 4 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
- Mar 27, 2021, 7:13 PM CDT (00:13 UTC)
- Expired
- Mar 27, 2021, 8:00 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Clinton County, IL, Saint Clair County, IL, Washington County, IL
The radar
The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 00:16 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 |
|---|---|---|---|
| Mar 27, 7:19 PM CDT | FUNNEL CLOUD | 2 S Scott Afb, IL | OBSERVERS AT SCOTT AFB SPOTTED A FUNNEL CLOUD SOUTH OF THE BASE AT 719 PM LOCAL TIME. |
| Mar 27, 7:33 PM CDT | HAIL 0.25 | 3 S Mascoutah, IL | |
| Mar 27, 7:37 PM CDT | HAIL 0.25 | 2 S New Baden, IL | |
| Mar 27, 7:41 PM CDT | HAIL 0.88 | 1 Sw New Memphis, IL |
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 |
|---|---|---|---|
| Mar 27, 4:44 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.2 hours before the alert went out and 213 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
- 933 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
883
WFUS53 KLSX 280013
TORLSX
ILC027-163-189-280100-
/O.NEW.KLSX.TO.W.0005.210328T0013Z-210328T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
713 PM CDT Sat Mar 27 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Southwestern Clinton County in south central Illinois...
Northwestern Washington County in south central Illinois...
East central St. Clair County in southwestern Illinois...
* Until 800 PM CDT.
* At 713 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Freeburg, moving east at 35 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 dangerous storm will be near...
Mascoutah and Scott AFB around 725 PM CDT.
New Baden and New Memphis around 735 PM CDT.
Albers around 740 PM CDT.
Okawville and Germantown around 750 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Bartelso, Frogtown, Fayetteville, Posey, Huegely, Johannisburg,
Venedy, New Minden, Addieville and Covington.
This includes Interstate 64 in Illinois between exits 23 and 50.
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 3837 9002 3852 9002 3863 8933 3836 8929
TIME...MOT...LOC 0013Z 263DEG 32KT 3844 8994
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
BRC1 follow-up statement
025
WWUS53 KLSX 280032
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
732 PM CDT Sat Mar 27 2021
ILC027-163-189-280100-
/O.CON.KLSX.TO.W.0005.000000T0000Z-210328T0100Z/
Clinton IL-Washington IL-St. Clair IL-
732 PM CDT Sat Mar 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHWESTERN CLINTON...NORTHWESTERN WASHINGTON AND EAST CENTRAL ST.
CLAIR COUNTIES...
At 731 PM CDT, a severe thunderstorm capable of producing a tornado
was located near New Memphis, moving east at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
New Baden and New Memphis around 735 PM CDT.
Albers around 745 PM CDT.
Okawville and Germantown around 750 PM CDT.
Beckemeyer around 800 PM CDT.
Carlyle around 805 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Bartelso, Frogtown, Fayetteville, Posey, Huegely, Johannisburg,
Venedy, New Minden, Addieville and Covington.
This includes Interstate 64 in Illinois between exits 23 and 50.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3837 8984 3855 8984 3863 8933 3836 8929
TIME...MOT...LOC 0031Z 260DEG 32KT 3848 8974
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
BRCThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 7:03 PM CDT | Tornado Warning | LSX | Bond, Clinton, Madison, Saint Clair | 42 min |
| Mar 27, 7:06 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 39 min |
| Mar 27, 7:27 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair, Washington | 48 min |
| Mar 27, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Saint Clair and 1 more | 47 min |
| Mar 27, 7:45 PM CDT | Tornado Warning | LSX | Bond, Clinton, Fayette, Marion | 45 min |
| Mar 27, 7:59 PM CDT | Tornado Warning | LSX | Clinton, Marion, Washington | 31 min |
| Mar 27, 8:11 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 64 min |
| Mar 27, 8:21 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Washington | 39 min |
Nearby
Tornado Warnings in Illinois, 2021Every tornado warning in 2021Tornadoes in 2021
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.