Alert archive / Illinois / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 113, NWS St. Louis, MO

July 8, 2022Monroe County, Randolph County, Illinois; Jefferson County, Sainte Genevieve County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 8, 2022, 4:31 PM CDT for Monroe County, Randolph County, Illinois; Jefferson County, Sainte Genevieve County, Missouri. It was in force for 29 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
Jul 8, 2022, 4:31 PM CDT (21:31 UTC)
Expired
Jul 8, 2022, 5:00 PM CDT
In force
29 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Monroe County, IL, Randolph County, IL, Jefferson County, MO, Sainte Genevieve County, MO

The radar

The St Louis radar (KLSX), 81 km from the middle of the area, began a volume at 21:31 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 12:00Z, 9.5 hours before the alert went out and 271 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2022-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 101 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2022-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
101 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
629 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

599 
WUUS53 KLSX 082131
SVRLSX
ILC133-157-MOC099-186-082200-
/O.NEW.KLSX.SV.W.0113.220708T2131Z-220708T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
431 PM CDT Fri Jul 8 2022

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  South central Monroe County in southwestern Illinois...
  Western Randolph County in southwestern Illinois...
  Southeastern Jefferson County in east central Missouri...
  Northwestern Ste. Genevieve County in southeastern Missouri...

* Until 500 PM CDT.

* At 431 PM CDT, a severe thunderstorm was located near Bloomsdale,
  moving east at 20 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Bloomsdale around 440 PM CDT.

This includes Interstate 55 in Missouri between exits 154 and 162.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3803 9036 3814 9035 3814 9012 3809 9011
      3806 9010 3796 9015
TIME...MOT...LOC 2131Z 272DEG 18KT 3805 9026 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Carney
1 follow-up statement
671 
WWUS53 KLSX 082144
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
444 PM CDT Fri Jul 8 2022

MOC099-082154-
/O.CAN.KLSX.SV.W.0113.000000T0000Z-220708T2200Z/
Jefferson MO-
444 PM CDT Fri Jul 8 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JEFFERSON COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3803 9036 3812 9025 3814 9026 3814 9012
      3806 9010 3796 9015
TIME...MOT...LOC 2144Z 274DEG 17KT 3804 9019 

$$

ILC133-157-MOC186-082200-
/O.CON.KLSX.SV.W.0113.000000T0000Z-220708T2200Z/
Monroe IL-Randolph IL-Ste. Genevieve MO-
444 PM CDT Fri Jul 8 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR SOUTH CENTRAL MONROE...WESTERN RANDOLPH AND NORTHWESTERN STE.
GENEVIEVE COUNTIES...

At 444 PM CDT, a severe thunderstorm was located over Bloomsdale,
moving east at 20 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of south
central Monroe, western Randolph and northwestern Ste. Genevieve
Counties, including the following locations... Kidd and Prairie Du
Rocher.

This includes Interstate 55 in Missouri between exits 154 and 162.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3803 9036 3812 9025 3814 9026 3814 9012
      3806 9010 3796 9015
TIME...MOT...LOC 2144Z 274DEG 17KT 3804 9019 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Carney

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 2:16 AM CDTAreal Flood AdvisoryLSXAdams, Brown3 hr
Jul 8, 3:05 AM CDTHeat AdvisoryLSXMonroe, Randolph, Saint Clair17 hr
Jul 8, 12:46 AM CDTAreal Flood AdvisoryLSXShelby2 hr
Jul 8, 12:49 AM CDTSevere Thunderstorm WarningLSXShelby41 min
Jul 8, 2:38 AM CDTAreal Flood AdvisoryLSXKnox, Lewis3 hr
Jul 8, 1:19 PM CDTRiver Flood WarningLSXLewis7 hr
Jul 8, 4:49 PM CDTSevere Thunderstorm WarningLSXJefferson, Sainte Genevieve, Saint Francois24 min
Jul 8, 6:08 PM CDTSevere Thunderstorm WarningLSXIron, Saint Francois, Washington32 min
Jul 8, 6:29 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Francois18 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2022Severe Thunderstorm Warnings in Missouri, 2022Every severe thunderstorm warning in 2022

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.