Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 13, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at May 9, 2021, 1:27 AM CDT for Cass County, Henry County, Johnson County, Missouri. It was in force for 33 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
- May 9, 2021, 1:27 AM CDT (06:27 UTC)
- Expired
- May 9, 2021, 2:00 AM CDT
- In force
- 33 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cass County, MO, Henry County, MO, Johnson County, MO
The radar
The Pleasant Hill radar (KEAX), 30 km from the middle of the area, began a volume at 06:28 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 |
|---|---|---|---|
| May 8, 9:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 6.5 hours before the alert went out and 144 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.
- Mixed-layer CAPE
- 377 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1653 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 362 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.0
The text
As transmitted.
055
WUUS53 KEAX 090627
SVREAX
MOC037-083-101-090700-
/O.NEW.KEAX.SV.W.0013.210509T0627Z-210509T0700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
127 AM CDT Sun May 9 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Southeastern Cass County in west central Missouri...
Northwestern Henry County in west central Missouri...
Southwestern Johnson County in west central Missouri...
* Until 200 AM CDT.
* At 126 AM CDT, a severe thunderstorm was located near
Harrisonville, moving east at 40 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...
Holden, Garden City, Chilhowee, East Lynne, Gunn City, Blairstown,
La Tour and Quick City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3853 9430 3869 9431 3874 9384 3861 9375
3849 9383
TIME...MOT...LOC 0626Z 269DEG 35KT 3861 9431
HAIL...1.00IN
WIND...60MPH
$$
Leighton2 follow-up statements
374
WWUS53 KEAX 090638
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
138 AM CDT Sun May 9 2021
MOC037-090648-
/O.CAN.KEAX.SV.W.0013.000000T0000Z-210509T0700Z/
Cass MO-
138 AM CDT Sun May 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CASS COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
west central Missouri.
LAT...LON 3855 9407 3857 9407 3857 9408 3872 9407
3874 9384 3865 9378 3860 9375 3852 9381
3851 9382
TIME...MOT...LOC 0638Z 267DEG 54KT 3863 9401
$$
MOC083-101-090700-
/O.CON.KEAX.SV.W.0013.000000T0000Z-210509T0700Z/
Henry MO-Johnson MO-
138 AM CDT Sun May 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CDT
FOR NORTHWESTERN HENRY AND SOUTHWESTERN JOHNSON COUNTIES...
At 138 AM CDT, a severe thunderstorm was located near Holden, moving
east at 60 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...
Holden, Chilhowee, Blairstown and Quick City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3855 9407 3857 9407 3857 9408 3872 9407
3874 9384 3865 9378 3860 9375 3852 9381
3851 9382
TIME...MOT...LOC 0638Z 267DEG 54KT 3863 9401
HAIL...1.00IN
WIND...60MPH
$$
Leighton024
WWUS53 KEAX 090652
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
152 AM CDT Sun May 9 2021
MOC083-101-090701-
/O.EXP.KEAX.SV.W.0013.000000T0000Z-210509T0700Z/
Henry MO-Johnson MO-
152 AM CDT Sun May 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HENRY AND
SOUTHWESTERN JOHNSON COUNTIES WILL EXPIRE AT 200 AM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
west central Missouri.
LAT...LON 3855 9407 3857 9407 3857 9408 3872 9407
3874 9384 3865 9378 3860 9375 3852 9381
3851 9382
TIME...MOT...LOC 0651Z 269DEG 35KT 3863 9386
$$
LeightonThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 11:19 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Platte | 41 min |
| May 8, 11:55 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Clay, Clinton, Jackson, Ray | 35 min |
| May 9, 12:29 AM CDT | Special Weather Statement | EAX | Carroll, Lafayette, Ray | 31 min |
| May 9, 1:00 AM CDT | Special Weather Statement | EAX | Cass, Johnson | 45 min |
| May 9, 1:37 AM CDT | Special Weather Statement | EAX | Johnson, Pettis | 38 min |
| May 9, 1:43 AM CDT | Special Weather Statement | EAX | Cooper, Howard, Randolph, Saline | 47 min |
| May 9, 2:11 AM CDT | Special Weather Statement | EAX | Pettis | 34 min |
| May 9, 5:09 AM CDT | Special Weather Statement | EAX | Cass, Clay, Jackson, Johnson, Lafayette, Platte and 1 more | 51 min |
| May 9, 1:25 PM CDT | River Flood Warning | EAX | Johnson, Pettis | 10 hr |
| May 9, 1:25 PM CDT | River Flood Warning | EAX | Cooper, Saline | 25 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2021Every 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.