Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Kansas City, MO

July 10, 20214 counties in Missouri; Atchison County, Doniphan County, Leavenworth County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jul 10, 2021, 1:44 AM CDT for 4 counties in Missouri; Atchison County, Doniphan County, Leavenworth County, Kansas. It was in force for 46 min. 3 reports 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: Jul 10, 2021, 1:44 AM CDT (06:44 UTC)
Expired: Jul 10, 2021, 2:30 AM CDT
In force: 46 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Atchison County, KS, Doniphan County, KS, Leavenworth County, KS, Buchanan County, MO, Clinton County, MO, DeKalb County, MO, Platte County, MO

The radar

The Topeka radar (KTWX), 126 km from the middle of the area, began a volume at 06:47 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
Jul 10, 2:20 AM CDT	TSTM WND DMG	Saint Joseph, MO	DELAYED REPORT: 4 INCH DIAMETER BRANCHES DOWN IN PLACES AROUND ST. JOSEPH AS WELL AS POWER OUTAGES.
Jul 10, 2:29 AM CDT	TSTM WND GST 60	Saint Joseph Airport, MO	CORRECTS PREVIOUS TSTM WND GST REPORT FROM SAINT JOSEPH AIRPORT.
Jul 10, 2:29 AM CDT	TSTM WND GST 60	Saint Joseph Airport, MO

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
Jul 9, 9:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 6.7 hours before the alert went out and 94 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: 2790 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1645 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 6.9

Open this sounding in Storm Lab

The text

As transmitted.

979 
WUUS53 KEAX 100644
SVREAX
KSC005-043-103-MOC021-049-063-165-100730-
/O.NEW.KEAX.SV.W.0083.210710T0644Z-210710T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
144 AM CDT Sat Jul 10 2021

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Doniphan County in northeastern Kansas...
  Northwestern Leavenworth County in northeastern Kansas...
  Atchison County in northeastern Kansas...
  Buchanan County in northwestern Missouri...
  Northwestern Clinton County in northwestern Missouri...
  Northern Platte County in west central Missouri...
  Southwestern DeKalb County in northwestern Missouri...

* Until 230 AM CDT.

* At 143 AM CDT, severe thunderstorms were located along a line
  extending from near White Cloud to near Denison, moving east at 65 
  mph. Automated weather station in Falls City Nebraska reported a 
  75 mph wind gust. 

  HAZARD...70 mph wind gusts.

  SOURCE...Trained weather spotters.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  St. Joseph, Leavenworth, Clarksdale and Stewartsville.

This includes the following highways...
 Interstate 29 between mile markers 18 and 51.
 Interstate 229 between mile markers 0 and 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3965 9556 3965 9534 4000 9534 4000 9531
      3995 9524 3994 9521 3990 9520 3991 9515
      3987 9513 3986 9504 3990 9502 3990 9494
      3985 9494 3982 9487 3983 9430 3928 9482
      3929 9518 3942 9518 3942 9557
TIME...MOT...LOC 0643Z 288DEG 55KT 4002 9527 3935 9560 

HAIL...<.75IN
WIND...70MPH
 
$$

Leighton

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 8:01 PM CDT	Special Weather Statement	EAX	Schuyler	44 min
Jul 9, 8:10 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	35 min
Jul 9, 8:37 PM CDT	Special Weather Statement	EAX	Grundy	38 min
Jul 9, 8:44 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	46 min
Jul 9, 8:50 PM CDT	Special Weather Statement	EAX	Putnam, Schuyler	40 min
Jul 9, 9:18 PM CDT	Special Weather Statement	EAX	Linn	42 min
Jul 9, 9:23 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	52 min
Jul 9, 9:26 PM CDT	Special Weather Statement	EAX	Adair	49 min
Jul 9, 9:36 PM CDT	Tornado Warning	EAX	Adair, Macon	12 min
Jul 9, 10:07 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	38 min
Jul 9, 10:44 PM CDT	Special Weather Statement	EAX	Linn, Macon, Randolph, Sullivan	46 min
Jul 9, 10:51 PM CDT	Special Weather Statement	EAX	Harrison	39 min
Jul 9, 11:28 PM CDT	Special Weather Statement	EAX	Linn, Randolph	47 min
Jul 10, 12:04 AM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Macon, Randolph	41 min
Jul 10, 12:53 AM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway, Worth	52 min
Jul 10, 1:37 AM CDT	Flash Flood Warning	EAX	Adair, Sullivan	8 hr
Jul 10, 1:40 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, DeKalb, Gentry, Holt, Nodaway and 1 more	50 min
Jul 10, 2:09 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	51 min
Jul 10, 2:28 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Caldwell, Clay, Clinton, Daviess, DeKalb and 2 more	47 min
Jul 10, 2:32 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Daviess, DeKalb, Gentry, Harrison, Nodaway and 1 more	43 min
Jul 10, 2:35 AM CDT	Flash Flood Warning	EAX	Linn, Macon	7 hr
Jul 10, 2:51 AM CDT	Special Weather Statement	EAX	Cass, Jackson, Johnson, Lafayette	39 min
Jul 10, 3:11 AM CDT	Special Weather Statement	EAX	Caldwell, Carroll, Daviess, Grundy, Harrison, Livingston and 2 more	49 min
Jul 10, 3:32 AM CDT	Special Weather Statement	EAX	Cass, Johnson, Lafayette, Pettis, Saline	43 min
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Chariton, Macon	3 days
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	5 days
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	2 hr
Jul 10, 7:46 AM CDT	River Flood Warning	EAX	Howard	13 hr
Jul 10, 8:27 AM CDT	Special Weather Statement	EAX	Bates	48 min
Jul 10, 8:47 AM CDT	Flash Flood Warning	EAX	Bates, Cass	3 hr
Jul 10, 9:45 AM CDT	Areal Flood Advisory	EAX	Adair, Linn, Macon, Sullivan	4 days
Jul 10, 3:47 PM CDT	Special Weather Statement	EAX	Atchison	43 min
Jul 10, 5:07 PM CDT	Special Weather Statement	EAX	Holt	38 min
Jul 10, 6:06 PM CDT	Special Weather Statement	EAX	Buchanan, Clinton, Daviess, DeKalb, Gentry	39 min
Jul 10, 6:18 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clay, Clinton, Platte	27 min
Jul 10, 6:25 PM CDT	Special Weather Statement	EAX	Jackson	50 min
Jul 10, 6:47 PM CDT	Special Weather Statement	EAX	Clay, Clinton, Platte	43 min
Jul 10, 5:45 PM CDT	Special Weather Statement	EAX	Wyandotte	45 min
Jul 10, 6:39 PM CDT	Special Weather Statement	EAX	Leavenworth	51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Severe Thunderstorm Warnings in Kansas, 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.