Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 43, NWS Kansas City, MO

June 20, 2021Andrew County, DeKalb County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 2021, 6:24 PM CDT for Andrew County, DeKalb County, Missouri. It was in force for 36 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, 6:24 PM CDT (23:24 UTC)
Expired: Jun 20, 2021, 7:00 PM CDT
In force: 36 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Andrew County, MO, DeKalb County, MO

The radar

The Pleasant Hill radar (KEAX), 120 km from the middle of the area, began a volume at 23:27 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, 6:35 PM CDT	HAIL 1.75	3 Nnw Cosby, MO	REPORRTED NEAR HWY 169 AND COUNTY ROAD 311.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 20, 4:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.4 hours before the alert went out and 131 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: 577 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 1356 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

796 
WUUS53 KEAX 202324
SVREAX
MOC003-063-210000-
/O.NEW.KEAX.SV.W.0043.210620T2324Z-210621T0000Z/

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

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Southeastern Andrew County in northwestern Missouri...
  Southwestern DeKalb County in northwestern Missouri...

* Until 700 PM CDT.

* At 624 PM CDT, a severe thunderstorm was located near Country Club
  Villa, moving east 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...
  Clarksdale.

This includes Interstate 29 between mile markers 52 and 55.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 9442 3978 9447 3980 9460 3982 9460
      3982 9476 3983 9483 3997 9483 3997 9443
TIME...MOT...LOC 2324Z 277DEG 22KT 3988 9475 

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

Blair

2 follow-up statements

510 
WWUS53 KEAX 202333
SVSEAX

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

MOC003-063-210000-
/O.CON.KEAX.SV.W.0043.000000T0000Z-210621T0000Z/
Andrew MO-DeKalb MO-
633 PM CDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHEASTERN ANDREW AND SOUTHWESTERN DEKALB COUNTIES...

At 633 PM CDT, a severe thunderstorm was located 7 miles northwest of
Clarksdale, or 8 miles east of Country Club Villa, moving east at 25
mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Clarksdale, Cosby, Amity and Helena. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 9442 3978 9447 3980 9460 3982 9460
      3982 9476 3983 9480 3996 9475 3997 9443
TIME...MOT...LOC 2333Z 277DEG 22KT 3987 9467 

HAIL...1.75IN
WIND...60MPH
 
$$

Blair

673 
WWUS53 KEAX 202345
SVSEAX

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

MOC003-063-210000-
/O.CON.KEAX.SV.W.0043.000000T0000Z-210621T0000Z/
Andrew MO-DeKalb MO-
645 PM CDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR SOUTHEASTERN ANDREW AND SOUTHWESTERN DEKALB COUNTIES...

At 644 PM CDT, a severe thunderstorm was located near Clarksdale, or
11 miles west of Maysville, moving east at 25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Clarksdale, Cosby, Amity and Helena. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 9442 3978 9447 3980 9460 3982 9460
      3982 9470 3992 9468 3994 9443
TIME...MOT...LOC 2344Z 277DEG 22KT 3986 9458 

HAIL...1.50IN
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 19, 7:42 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	33 min
Jun 19, 8:13 PM CDT	Special Weather Statement	EAX	Randolph	47 min
Jun 19, 8:28 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	32 min
Jun 19, 8:57 PM CDT	Special Weather Statement	EAX	Randolph	48 min
Jun 19, 9:09 PM CDT	Flash Flood Warning	EAX	Howard, Randolph	5 hr
Jun 19, 9:25 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	35 min
Jun 19, 9:28 PM CDT	Special Weather Statement	EAX	Macon	47 min
Jun 19, 9:33 PM CDT	Areal Flood Advisory	EAX	Adair, Macon	6 hr
Jun 19, 9:40 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Randolph	35 min
Jun 19, 9:58 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	32 min
Jun 19, 10:33 PM CDT	Severe Thunderstorm Warning	EAX	Chariton	27 min
Jun 19, 10:56 PM CDT	Special Weather Statement	EAX	Chariton	49 min
Jun 19, 11:08 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Livingston	37 min
Jun 19, 11:32 PM CDT	Areal Flood Advisory	EAX	Carroll, Chariton, Howard, Livingston	6 hr
Jun 19, 11:44 PM CDT	Special Weather Statement	EAX	Chariton	46 min
Jun 20, 12:01 AM CDT	Flash Flood Warning	EAX	Chariton, Howard	7 hr
Jun 20, 2:30 AM CDT	Areal Flood Warning	EAX	Randolph	3 hr
Jun 20, 3:34 AM CDT	Special Weather Statement	EAX	Gentry, Nodaway	41 min
Jun 20, 8:34 AM CDT	Special Weather Statement	EAX	Sullivan	41 min
Jun 20, 9:10 AM CDT	Special Weather Statement	EAX	Adair	50 min
Jun 20, 11:26 AM CDT	Special Weather Statement	EAX	Randolph	34 min
Jun 20, 6:07 PM CDT	Special Weather Statement	EAX	Andrew	38 min
Jun 20, 6:52 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Mercer, Putnam, Sullivan	23 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.