Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 140, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Sep 20, 2021, 8:26 PM CDT for Cooper County, Pettis County, Saline County, Missouri. It was in force for 49 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
- Sep 20, 2021, 8:26 PM CDT (01:26 UTC)
- Expired
- Sep 20, 2021, 9:15 PM CDT
- In force
- 49 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cooper County, MO, Pettis County, MO, Saline County, MO
The radar
The Pleasant Hill radar (KEAX), 108 km from the middle of the area, began a volume at 01:30 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 |
|---|---|---|---|
| Sep 20, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 1.4 hours before the alert went out and 225 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
- 404 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1537 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -70 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -1.1
The text
As transmitted.
075
WUUS53 KEAX 210126
SVREAX
MOC053-159-195-210215-
/O.NEW.KEAX.SV.W.0140.210921T0126Z-210921T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
826 PM CDT Mon Sep 20 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Northern Pettis County in central Missouri...
Southern Saline County in central Missouri...
Western Cooper County in central Missouri...
* Until 915 PM CDT.
* At 826 PM CDT, a severe thunderstorm was located over Houstonia, or
near Sweet Springs, 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...
Sweet Springs, La Monte, Pilot Grove, Houstonia, Emma, Nelson,
Hughesville, Blackwater, Arrow Rock and Clifton City.
This includes Interstate 70 in Missouri between mile markers 63 and
93.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3870 9292 3878 9350 3903 9349 3912 9294
3910 9294 3910 9291 3909 9290 3907 9293
3901 9291
TIME...MOT...LOC 0126Z 270DEG 35KT 3889 9336
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Klaus2 follow-up statements
952
WWUS53 KEAX 210156
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
856 PM CDT Mon Sep 20 2021
MOC053-159-195-210215-
/O.CON.KEAX.SV.W.0140.000000T0000Z-210921T0215Z/
Pettis MO-Saline MO-Cooper MO-
856 PM CDT Mon Sep 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR NORTHEASTERN PETTIS...SOUTHEASTERN SALINE AND WESTERN COOPER
COUNTIES...
At 856 PM CDT, a severe thunderstorm was located near Pilot Grove, or
13 miles west of Boonville, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Pilot Grove, Nelson, Blackwater, Arrow Rock and Clifton City.
This includes Interstate 70 in Missouri between mile markers 79 and
93.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3874 9318 3908 9318 3912 9294 3910 9294
3910 9291 3909 9290 3907 9293 3901 9291
3870 9292
TIME...MOT...LOC 0156Z 270DEG 35KT 3889 9298
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Klaus893
WWUS53 KEAX 210205
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
905 PM CDT Mon Sep 20 2021
MOC053-159-195-210215-
/O.EXP.KEAX.SV.W.0140.000000T0000Z-210921T0215Z/
Pettis MO-Saline MO-Cooper MO-
905 PM CDT Mon Sep 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PETTIS...
SOUTHEASTERN SALINE AND WESTERN COOPER COUNTIES WILL EXPIRE AT 915 PM
CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds, frequent lightning, and
heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
central Missouri.
LAT...LON 3874 9318 3908 9318 3912 9294 3910 9294
3910 9291 3909 9290 3907 9293 3901 9291
3870 9292
TIME...MOT...LOC 0205Z 270DEG 35KT 3889 9291
$$
KlausThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 7:25 PM CDT | Special Weather Statement | EAX | Carroll, Livingston | 35 min |
| Sep 20, 7:35 PM CDT | Severe Thunderstorm Warning | EAX | Lafayette | 21 min |
| Sep 20, 7:52 PM CDT | Special Weather Statement | EAX | Linn | 23 min |
| Sep 20, 8:55 PM CDT | Special Weather Statement | EAX | Cooper, Howard | 35 min |
| Sep 20, 9:27 PM CDT | Special Weather Statement | EAX | Randolph | 18 min |
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.