Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 5, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 23, 2021, 7:26 PM CDT for Calhoun County, Pike County, Illinois; Pike County, Missouri. It was in force for 34 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 23, 2021, 7:26 PM CDT (00:26 UTC)
- Expired
- Mar 23, 2021, 8:00 PM CDT
- In force
- 34 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Pike County, IL, Pike County, MO
The radar
The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 00:27 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.4 hours before the alert went out and 208 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
- 281 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted.
935 WUUS53 KLSX 240026 SVRLSX ILC013-149-MOC163-240100- /O.NEW.KLSX.SV.W.0005.210324T0026Z-210324T0100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service St Louis MO 726 PM CDT Tue Mar 23 2021 The National Weather Service in St Louis has issued a * Severe Thunderstorm Warning for... Northwestern Calhoun County in southwestern Illinois... South central Pike County in west central Illinois... Southeastern Pike County in northeastern Missouri... * Until 800 PM CDT. * At 726 PM CDT, a severe thunderstorm was located near Eolia, moving northeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Pleasant Hill, Clarksville, Belleview, Nebo and Paynesville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. This thunderstorm is capable of producing all types of severe weather including extremely large hail, destructive straight line winds and tornadoes. Move quickly to a safe shelter such as an interior room, a bathroom, closet or basement. && LAT...LON 3942 9066 3922 9092 3926 9100 3951 9083 TIME...MOT...LOC 0026Z 217DEG 31KT 3927 9093 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ TES
1 follow-up statement
215
WWUS53 KLSX 240058 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
758 PM CDT Tue Mar 23 2021
ILC013-149-MOC163-240108-
/O.EXP.KLSX.SV.W.0005.000000T0000Z-210324T0100Z/
Calhoun IL-Pike IL-Pike MO-
758 PM CDT Tue Mar 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CALHOUN COUNTY IN
SOUTHWESTERN ILLINOIS...SOUTH CENTRAL PIKE COUNTY IN WEST CENTRAL
ILLINOIS AND SOUTHEASTERN PIKE COUNTIES IN NORTHEASTERN MISSOURI WILL
EXPIRE AT 800 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
St Louis.
LAT...LON 3942 9066 3922 9092 3926 9100 3951 9083
TIME...MOT...LOC 0058Z 217DEG 31KT 3948 9073
$$
TESThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 7:04 PM CDT | Tornado Warning | LSX | Pike | 41 min |
| Mar 23, 7:35 PM CDT | Tornado Warning | LSX | Calhoun, Pike | 25 min |
| Mar 23, 11:02 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.