Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 50, NWS Kansas City, MO

June 20, 2021Cooper County, Howard County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 2021, 10:27 PM CDT for Cooper County, Howard County, Missouri. It was in force for 33 min. 1 report 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: Jun 20, 2021, 10:27 PM CDT (03:27 UTC)
Expired: Jun 20, 2021, 11:00 PM CDT
In force: 33 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cooper County, MO, Howard County, MO

The radar

The Pleasant Hill radar (KEAX), 144 km from the middle of the area, began a volume at 03:27 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.

What was reported inside it

Time	Report	Where	Remark
Jun 20, 10:30 PM CDT	TSTM WND DMG	1 Nne Boonville, MO	MULTIPLE TREES DOWN IN AND AROUND BOONVILLE. HIGHWAY 98 IS BLOCKED BY FALLEN TREES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.5 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-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: 1346 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1683 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

835 
WUUS53 KEAX 210327
SVREAX
MOC053-089-210400-
/O.NEW.KEAX.SV.W.0050.210621T0327Z-210621T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
1027 PM CDT Sun Jun 20 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Southeastern Howard County in central Missouri...
  Central Cooper County in central Missouri...

* Until 1100 PM CDT.

* At 1027 PM CDT, a severe thunderstorm was located near Boonville,
  moving east at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will remain over mainly rural areas of
  southeastern Howard and central Cooper Counties, including the
  following locations... Franklin and Wooldridge.

This includes Interstate 70 in Missouri between mile markers 96 and
114.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3882 9255 3885 9292 3905 9283 3906 9253
      3900 9256 3899 9256 3898 9257 3893 9251
      3891 9250
TIME...MOT...LOC 0327Z 280DEG 50KT 3895 9269 

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

Blair

1 follow-up statement

987 
WWUS53 KEAX 210344
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1044 PM CDT Sun Jun 20 2021

MOC053-089-210400-
/O.CON.KEAX.SV.W.0050.000000T0000Z-210621T0400Z/
Howard MO-Cooper MO-
1044 PM CDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHEASTERN HOWARD AND NORTHEASTERN COOPER COUNTIES...

At 1044 PM CDT, a severe thunderstorm was located near Rocheport, or
10 miles west of Columbia, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Boonville and Wooldridge. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3882 9255 3884 9276 3906 9265 3906 9253
      3900 9256 3899 9256 3898 9257 3893 9251
      3891 9250
TIME...MOT...LOC 0344Z 278DEG 47KT 3892 9252 

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

Blair

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 7:15 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Harrison, Mercer, Putnam, Sullivan	45 min
Jun 20, 7:57 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Platte	33 min
Jun 20, 8:01 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Linn, Macon, Sullivan	44 min
Jun 20, 8:39 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	36 min
Jun 20, 8:54 PM CDT	Special Weather Statement	EAX	Livingston	21 min
Jun 20, 9:17 PM CDT	Special Weather Statement	EAX	Jackson	28 min
Jun 20, 9:29 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson, Johnson	20 min
Jun 20, 11:05 PM CDT	Special Weather Statement	EAX	Bates	25 min
Jun 21, 5:19 AM CDT	River Flood Warning	EAX	Howard	9 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.