Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS St. Louis, MO

June 24, 2021Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 24, 2021, 10:57 PM CDT for Monroe County, Shelby County, Missouri. It was in force for 48 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
Jun 24, 2021, 10:57 PM CDT (03:57 UTC)
Expired
Jun 24, 2021, 11:45 PM CDT
In force
48 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 158 km from the middle of the area, began a volume at 03:58 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.

IssuedProductOfficeLasted
Jun 24, 8:57 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.0 hours before the alert went out and 250 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, Davenport, at 00:00Z on 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 112 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 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
112 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
817 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted.

598 
WUUS53 KLSX 250357
SVRLSX
MOC137-205-250445-
/O.NEW.KLSX.SV.W.0095.210625T0357Z-210625T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1057 PM CDT Thu Jun 24 2021

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Shelby County in northeastern Missouri...
  Monroe County in northeastern Missouri...

* Until 1145 PM CDT.

* At 1056 PM CDT, severe thunderstorms were located along a line
  extending from 9 miles east of La Plata to near Macon to near
  Armstrong, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Clarence and Maud around 1115 PM CDT.

Other locations in the path of these severe thunderstorms include
Shelbina, Shelbyville, Madison, Paris and Emden.

This also includes Union Covered Bridge Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3995 9184 3958 9185 3934 9188 3935 9231
      3995 9229
TIME...MOT...LOC 0356Z 261DEG 38KT 3997 9233 3970 9247 3934 9270 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

CVKING
1 follow-up statement
614 
WWUS53 KLSX 250425
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1125 PM CDT Thu Jun 24 2021

MOC137-205-250445-
/O.CON.KLSX.SV.W.0095.000000T0000Z-210625T0445Z/
Shelby MO-Monroe MO-
1125 PM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR SHELBY AND MONROE COUNTIES...

At 1125 PM CDT, severe thunderstorms were located along a line
extending from near Steffenville to near Shelbina to 7 miles south of
Madison, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Emden and Paris.

This also includes Union Covered Bridge Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3934 9188 3935 9230 3995 9215 3995 9184
      3958 9185
TIME...MOT...LOC 0425Z 253DEG 46KT 3993 9197 3967 9201 3936 9220 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

CVKING

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 11:03 PM CDTTornado WarningLSXMonroe, Shelby42 min
Jun 24, 11:29 PM CDTSevere Thunderstorm WarningLSXAudrain, Lewis, Marion, Monroe, Pike, Ralls and 1 more46 min
Jun 24, 11:32 PM CDTTornado WarningLSXLewis28 min
Jun 24, 11:35 PM CDTTornado WarningLSXAudrain, Monroe, Ralls40 min
Jun 24, 11:40 PM CDTTornado WarningLSXMarion, Monroe, Ralls, Shelby38 min
Jun 25, 12:09 AM CDTTornado WarningLSXAudrain, Pike, Ralls51 min
Jun 25, 12:17 AM CDTSevere Thunderstorm WarningLSXAudrain, Lincoln, Montgomery, Pike, Ralls43 min
Jun 25, 12:57 AM CDTSevere Thunderstorm WarningLSXLincoln, Pike48 min
Jun 25, 1:27 AM CDTRiver Flood WarningLSXBoone33 hr
Jun 25, 1:54 AM CDTAreal Flood AdvisoryLSXMontgomery3 hr
Jun 25, 2:21 AM CDTAreal Flood AdvisoryLSXAudrain, Boone, Callaway106 min
Jun 25, 3:07 AM CDTAreal Flood AdvisoryLSXBoone, Callaway, Cole, Moniteau82 min
Jun 25, 3:34 AM CDTFlash Flood WarningLSXBoone6 hr
Jun 25, 4:04 AM CDTFlash Flood WarningLSXAudrain, Boone, Callaway6 hr
Jun 25, 4:26 AM CDTFlash Flood WarningLSXBoone, Callaway, Cole, Moniteau6 hr
Jun 25, 4:28 AM CDTFlash Flood WarningLSXCallaway, Lincoln, Montgomery, Osage, Warren6 hr
Jun 25, 7:48 AM CDTRiver Flood WarningLSXLincoln62 hr
Jun 25, 8:25 AM CDTAreal Flood WarningLSXAudrain, Boone, Callaway, Cole, Moniteau9 hr
Jun 25, 10:06 AM CDTRiver Flood WarningLSXFranklin, Warren9 days
Jun 25, 10:06 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis21 days
Jun 25, 10:06 AM CDTRiver Flood WarningLSXBoone, Callaway, Cole, Moniteau8 days
Jun 25, 10:06 AM CDTRiver Flood WarningLSXCallaway, Osage21 days
Jun 25, 10:06 AM CDTRiver Flood WarningLSXGasconade, Montgomery10 days
Jun 25, 4:59 PM CDTSevere Thunderstorm WarningLSXCallaway, Osage20 min
Jun 25, 5:01 PM CDTSevere Thunderstorm WarningLSXBoone, Moniteau44 min
Jun 25, 5:05 PM CDTRiver Flood WarningLSXCole, Osage9 days
Jun 25, 5:42 PM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Callaway22 min
Jun 25, 6:07 PM CDTRiver Flood WarningLSXLincoln3 days
Jun 25, 6:36 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles, Warren39 min
Jun 25, 6:43 PM CDTFlash Flood WarningLSXAudrain, Boone, Callaway6 hr
Jun 25, 6:48 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Warren42 min
Jun 25, 6:55 PM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Callaway19 min

Nearby

Severe 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.