Alert archive / Illinois / Tornado Warnings in 2021
Tornado Warning 6, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Mar 27, 2021, 7:45 PM CDT for 4 counties in Illinois. It was in force for 45 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
- Mar 27, 2021, 7:45 PM CDT (00:45 UTC)
- Expired
- Mar 27, 2021, 8:30 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Marion County, IL
The radar
The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 00:45 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 |
|---|---|---|---|
| Mar 27, 4:44 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.8 hours before the alert went out and 154 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.
810
WFUS53 KLSX 280045
TORLSX
ILC005-027-051-121-280130-
/O.NEW.KLSX.TO.W.0006.210328T0045Z-210328T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
745 PM CDT Sat Mar 27 2021
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Northeastern Clinton County in south central Illinois...
Southeastern Bond County in south central Illinois...
Northwestern Marion County in south central Illinois...
Southern Fayette County in south central Illinois...
* Until 830 PM CDT.
* At 744 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Tamalco, moving east at 40 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...
Mulberry Grove around 755 PM CDT.
Patoka and Shobonier around 805 PM CDT.
Other locations impacted by this tornadic thunderstorm include St.
Peter, Loogootee, St. James, Smithboro, Pleasant Mound, Pittsburg,
St. Paul, Keyesport, Hagerstown and Vernon.
This includes Interstate 70 in Illinois between exits 41 and 52, and
between exits 68 and 76.
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 3869 8944 3888 8947 3903 8881 3891 8881
3877 8882
TIME...MOT...LOC 0044Z 258DEG 35KT 3881 8933
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
BRC1 follow-up statement
130
WWUS53 KLSX 280101
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
801 PM CDT Sat Mar 27 2021
ILC005-027-280111-
/O.CAN.KLSX.TO.W.0006.000000T0000Z-210328T0130Z/
Clinton IL-Bond IL-
801 PM CDT Sat Mar 27 2021
...THE TORNADO WARNING FOR NORTHEASTERN CLINTON AND SOUTHEASTERN BOND
COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
south central Illinois.
LAT...LON 3879 8882 3876 8925 3893 8926 3903 8881
3891 8881
TIME...MOT...LOC 0101Z 258DEG 30KT 3885 8918
$$
ILC051-121-280130-
/O.CON.KLSX.TO.W.0006.000000T0000Z-210328T0130Z/
Marion IL-Fayette IL-
801 PM CDT Sat Mar 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
NORTHWESTERN MARION AND SOUTHERN FAYETTE COUNTIES...
At 801 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Shobonier, 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...
Vandalia and Shobonier around 810 PM CDT.
Brownstown around 825 PM CDT.
Other locations impacted by this tornadic thunderstorm include St.
Peter, Loogootee, St. James, Pittsburg, St. Paul, Hagerstown and
Vernon.
This includes Interstate 70 in Illinois between exits 68 and 76.
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 3879 8882 3876 8925 3893 8926 3903 8881
3891 8881
TIME...MOT...LOC 0101Z 258DEG 30KT 3885 8918
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, 7:13 PM CDT | Tornado Warning | LSX | Clinton, Saint Clair, Washington | 47 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, 7:59 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.