Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 19, NWS Kansas City, MO

June 11, 2021Atchison County, Holt County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2021, 12:10 PM CDT for Atchison County, Holt County, Missouri. It was in force for 21 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 11, 2021, 12:10 PM CDT (17:10 UTC)
Expired: Jun 11, 2021, 12:31 PM CDT
In force: 21 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atchison County, MO, Holt County, MO

The radar

The Omaha radar (KOAX), 136 km from the middle of the area, began a volume at 17:11 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.

Issued	Product	Office	Lasted
Jun 11, 8:30 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 5.2 hours before the alert went out and 136 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: 2132 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

256 
WUUS53 KEAX 111710
SVREAX
MOC005-087-111745-
/O.NEW.KEAX.SV.W.0019.210611T1710Z-210611T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
1210 PM CDT Fri Jun 11 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Southwestern Atchison County in northwestern Missouri...
  Northwestern Holt County in northwestern Missouri...

* Until 1245 PM CDT.

* At 1210 PM CDT, a severe thunderstorm was located near Auburn, or
  21 miles northwest of Falls City, moving east at 20 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...
  Rock Port.

This includes Interstate 29 between mile markers 94 and 114.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4046 9533 4011 9539 4013 9540 4014 9543
      4016 9544 4018 9548 4024 9547 4026 9555
      4030 9556 4032 9561 4031 9566 4035 9562
      4041 9566 4046 9564
TIME...MOT...LOC 1710Z 285DEG 18KT 4034 9578 

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

PP

1 follow-up statement

553 
WWUS53 KEAX 111731
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1231 PM CDT Fri Jun 11 2021

MOC005-087-111741-
/O.CAN.KEAX.SV.W.0019.000000T0000Z-210611T1745Z/
Atchison MO-Holt MO-
1231 PM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ATCHISON AND
NORTHWESTERN HOLT 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 are
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 300 PM CDT for
northwestern Missouri.

LAT...LON 4046 9533 4011 9539 4013 9540 4014 9543
      4016 9544 4018 9548 4024 9547 4026 9555
      4030 9556 4032 9561 4031 9566 4035 9562
      4041 9566 4046 9564
TIME...MOT...LOC 1730Z 285DEG 18KT 4031 9565 

$$

PP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 12:04 PM CDT	Special Weather Statement	EAX	Atchison	41 min
Jun 11, 1:16 PM CDT	Severe Thunderstorm Warning	EAX	Holt	29 min
Jun 11, 1:41 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Holt	34 min
Jun 11, 2:12 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, DeKalb, Holt, Platte	63 min
Jun 11, 2:44 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clay, Clinton, DeKalb, Platte	46 min
Jun 11, 2:49 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette, Ray	41 min
Jun 11, 2:52 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Jackson, Platte	68 min
Jun 11, 3:26 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell, Clay, Clinton, Jackson, Ray	34 min
Jun 11, 3:28 PM CDT	Special Weather Statement	EAX	Lafayette	47 min
Jun 11, 3:37 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson, Lafayette, Ray	38 min
Jun 11, 3:57 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Jackson, Ray	14 min
Jun 11, 3:59 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson	31 min
Jun 11, 4:02 PM CDT	Areal Flood Advisory	EAX	Platte	4 hr
Jun 11, 4:07 PM CDT	Special Weather Statement	EAX	Pettis	38 min
Jun 11, 4:14 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Clay, Jackson, Johnson, Lafayette, Ray	46 min
Jun 11, 4:25 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette, Pettis, Saline	35 min
Jun 11, 4:42 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson, Pettis	33 min
Jun 11, 5:08 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Lafayette, Pettis, Saline	37 min
Jun 11, 5:58 PM CDT	River Flood Warning	EAX	Jackson	81 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.