Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 8, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 27, 2021, 4:23 PM CDT for Calhoun County, Greene County, Pike County, Illinois; Lincoln County, Pike County, Missouri. It was in force for 52 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
- Mar 27, 2021, 4:23 PM CDT (21:23 UTC)
- Expired
- Mar 27, 2021, 5:15 PM CDT
- In force
- 52 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Greene County, IL, Pike County, IL, Lincoln County, MO, Pike County, MO
The radar
The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 21:26 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, 4:40 PM CDT | HAIL 0.88 | Kampsville, IL | HAIL COVERING THE GROUND. LARGEST HAIL STONES OBSERVED WERE NICKEL SIZED AT THIS TIME. |
| Mar 27, 4:50 PM CDT | HAIL 0.5 | 1 S Kampsville, IL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.4 hours before the alert went out and 192 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
- 1078 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 369 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
642
WUUS53 KLSX 272123
SVRLSX
ILC013-061-149-MOC113-163-272215-
/O.NEW.KLSX.SV.W.0008.210327T2123Z-210327T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
423 PM CDT Sat Mar 27 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
North central Calhoun County in southwestern Illinois...
Northern Greene County in southwestern Illinois...
Southeastern Pike County in west central Illinois...
North central Lincoln County in east central Missouri...
Southeastern Pike County in northeastern Missouri...
* Until 515 PM CDT.
* At 423 PM CDT, a severe thunderstorm was located near Belleview,
moving northeast at 60 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
White Hall, Carrollton, Roodhouse, Belleview, Patterson,
Kampsville, Wrights, Eldred, Hillview, Pearl, Hamburg, Paynesville,
Annada, Belltown, Mozier, Berdan, Haypress, Barrow, Walkersville
and Beecreek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3935 9025 3918 9083 3918 9097 3933 9095
3952 9050 3952 9033
TIME...MOT...LOC 2123Z 247DEG 51KT 3928 9085
HAIL...1.00IN
WIND...60MPH
$$
BRC1 follow-up statement
413
WWUS53 KLSX 272138
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
438 PM CDT Sat Mar 27 2021
MOC113-163-272147-
/O.CAN.KLSX.SV.W.0008.000000T0000Z-210327T2215Z/
Lincoln MO-Pike MO-
438 PM CDT Sat Mar 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LINCOLN COUNTY
IN EAST CENTRAL MISSOURI AND SOUTHEASTERN PIKE COUNTIES IN
NORTHEASTERN MISSOURI IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3935 9025 3922 9072 3925 9073 3927 9076
3932 9080 3937 9081 3952 9050 3952 9033
TIME...MOT...LOC 2137Z 247DEG 51KT 3936 9060
$$
ILC013-061-149-272215-
/O.CON.KLSX.SV.W.0008.000000T0000Z-210327T2215Z/
Calhoun IL-Greene IL-Pike IL-
438 PM CDT Sat Mar 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTH CENTRAL CALHOUN...NORTHERN GREENE COUNTIES IN SOUTHWESTERN
ILLINOIS AND SOUTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS...
At 437 PM CDT, a severe thunderstorm was located 9 miles east of
Belleview, moving northeast at 60 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
White Hall, Carrollton, Roodhouse, Belleview, Patterson, Kampsville,
Wrights, Eldred, Hillview, Pearl, Hamburg, Belltown, Mozier, Berdan,
Haypress, Barrow, Walkersville and Beecreek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3935 9025 3922 9072 3925 9073 3927 9076
3932 9080 3937 9081 3952 9050 3952 9033
TIME...MOT...LOC 2137Z 247DEG 51KT 3936 9060
HAIL...1.00IN
WIND...60MPH
$$
BRCThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 4:47 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 43 min |
| Mar 27, 4:52 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Madison | 38 min |
| Mar 27, 5:18 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 42 min |
| Mar 27, 5:26 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 38 min |
| Mar 27, 6:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 49 min |
| Mar 27, 4:16 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Saint Charles, Warren | 44 min |
| Mar 27, 5:24 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade | 15 min |
| Mar 27, 5:36 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Washington | 28 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Severe Thunderstorm Warnings in Missouri, 2021Every severe thunderstorm warning 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.