Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 99, NWS St. Louis, MO

June 25, 2021Callaway County, Osage County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 25, 2021, 4:59 PM CDT for Callaway County, Osage County, Missouri. It was in force for 20 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 25, 2021, 4:59 PM CDT (21:59 UTC)
Expired: Jun 25, 2021, 5:19 PM CDT
In force: 20 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Callaway County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 22:01 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

Springfield, MO (KSGF), launched 12:00Z, 10.0 hours before the alert went out and 248 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1974 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 797 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 10.8

Open this sounding in Storm Lab

The text

As transmitted.

285 
WUUS53 KLSX 252159
SVRLSX
MOC027-151-252245-
/O.NEW.KLSX.SV.W.0099.210625T2159Z-210625T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
459 PM CDT Fri Jun 25 2021

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Central Callaway County in central Missouri...
  North central Osage County in central Missouri...

* Until 545 PM CDT.

* At 459 PM CDT, a severe thunderstorm was located 7 miles northwest
  of Linn, moving north at 25 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...
  Chamois and Fulton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3856 9202 3856 9200 3857 9201 3891 9193
      3884 9164 3845 9190 3849 9201 3851 9201
      3853 9203 3855 9203
TIME...MOT...LOC 2159Z 198DEG 24KT 3855 9195 

HAIL...1.00IN
WIND...60MPH
 
$$

Carney

1 follow-up statement

969 
WWUS53 KLSX 252219
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
519 PM CDT Fri Jun 25 2021

MOC027-151-252229-
/O.CAN.KLSX.SV.W.0099.000000T0000Z-210625T2245Z/
Callaway MO-Osage MO-
519 PM CDT Fri Jun 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CALLAWAY AND NORTH
CENTRAL OSAGE COUNTIES IS CANCELLED...
                
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 has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
central and east central Missouri.

LAT...LON 3856 9202 3856 9200 3857 9201 3891 9193
      3884 9164 3845 9190 3849 9201 3851 9201
      3853 9203 3855 9203
TIME...MOT...LOC 2218Z 198DEG 24KT 3868 9190 

$$

Carney

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	48 min
Jun 24, 11:03 PM CDT	Tornado Warning	LSX	Monroe, Shelby	42 min
Jun 24, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lewis, Marion, Monroe, Pike, Ralls and 1 more	46 min
Jun 24, 11:32 PM CDT	Tornado Warning	LSX	Lewis	28 min
Jun 24, 11:35 PM CDT	Tornado Warning	LSX	Audrain, Monroe, Ralls	40 min
Jun 24, 11:40 PM CDT	Tornado Warning	LSX	Marion, Monroe, Ralls, Shelby	38 min
Jun 25, 12:09 AM CDT	Tornado Warning	LSX	Audrain, Pike, Ralls	51 min
Jun 25, 12:17 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Ralls	43 min
Jun 25, 12:57 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	48 min
Jun 25, 1:27 AM CDT	River Flood Warning	LSX	Boone	33 hr
Jun 25, 1:54 AM CDT	Areal Flood Advisory	LSX	Montgomery	3 hr
Jun 25, 2:21 AM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Callaway	106 min
Jun 25, 3:07 AM CDT	Areal Flood Advisory	LSX	Boone, Callaway, Cole, Moniteau	82 min
Jun 25, 3:34 AM CDT	Flash Flood Warning	LSX	Boone	6 hr
Jun 25, 4:04 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 4:26 AM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	6 hr
Jun 25, 4:28 AM CDT	Flash Flood Warning	LSX	Callaway, Lincoln, Montgomery, Osage, Warren	6 hr
Jun 25, 7:48 AM CDT	River Flood Warning	LSX	Lincoln	62 hr
Jun 25, 8:25 AM CDT	Areal Flood Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau	9 hr
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Franklin, Warren	9 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	8 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Callaway, Osage	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Jun 25, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	44 min
Jun 25, 5:05 PM CDT	River Flood Warning	LSX	Cole, Osage	9 days
Jun 25, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	22 min
Jun 25, 6:07 PM CDT	River Flood Warning	LSX	Lincoln	3 days
Jun 25, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	39 min
Jun 25, 6:43 PM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 6:48 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Jun 25, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	19 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Every 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.