Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 130, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Sep 20, 2021, 4:57 PM CDT for 4 counties in 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
- Sep 20, 2021, 4:57 PM CDT (21:57 UTC)
- Expired
- Sep 20, 2021, 5:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Daviess County, MO, DeKalb County, MO, Gentry County, MO, Harrison County, MO
The radar
The Pleasant Hill radar (KEAX), 139 km from the middle of the area, began a volume at 21:57 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 12:00Z, 10.0 hours before the alert went out and 163 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
- 583 J/kg
- Mixed-layer CIN
- -288 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
309
WUUS53 KEAX 202157
SVREAX
MOC061-063-075-081-202230-
/O.NEW.KEAX.SV.W.0130.210920T2157Z-210920T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
457 PM CDT Mon Sep 20 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Northwestern Daviess County in north central Missouri...
Southeastern Gentry County in northwestern Missouri...
Southwestern Harrison County in north central Missouri...
Northeastern DeKalb County in northwestern Missouri...
* Until 530 PM CDT.
* At 457 PM CDT, a severe thunderstorm was located 10 miles west of
Pattonsburg, or 11 miles south of Albany, moving east at 30 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...
Pattonsburg, Mcfall, Fairport, Ford City and Santa Rosa.
This includes Interstate 35 in Missouri between mile markers 70 and
80.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3998 9450 4014 9446 4024 9412 3995 9402
TIME...MOT...LOC 2157Z 249DEG 25KT 4008 9432
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Klaus1 follow-up statement
431
WWUS53 KEAX 202215
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
515 PM CDT Mon Sep 20 2021
MOC061-063-075-081-202230-
/O.CON.KEAX.SV.W.0130.000000T0000Z-210920T2230Z/
Daviess MO-Gentry MO-Harrison MO-DeKalb MO-
515 PM CDT Mon Sep 20 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN DAVIESS...SOUTHEASTERN GENTRY...SOUTHWESTERN
HARRISON AND NORTHEASTERN DEKALB COUNTIES...
At 515 PM CDT, a severe thunderstorm was located near Pattonsburg, or
12 miles southwest of Bethany, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Pattonsburg, Mcfall and Santa Rosa.
This includes Interstate 35 in Missouri between mile markers 70 and
80.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3997 9434 4020 9425 4024 9412 3995 9402
TIME...MOT...LOC 2215Z 249DEG 25KT 4013 9417
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
KlausThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 4:00 PM CDT | Special Weather Statement | EAX | Buchanan | 30 min |
| Sep 20, 4:12 PM CDT | Severe Thunderstorm Warning | EAX | Harrison, Worth | 33 min |
| Sep 20, 4:36 PM CDT | Special Weather Statement | EAX | DeKalb | 24 min |
| Sep 20, 5:13 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Clinton, Platte | 47 min |
| Sep 20, 5:29 PM CDT | Severe Thunderstorm Warning | EAX | Jackson | 46 min |
| Sep 20, 5:33 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Clinton, Platte | 42 min |
| Sep 20, 5:49 PM CDT | Special Weather Statement | EAX | Daviess | 26 min |
| Sep 20, 6:00 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson | 45 min |
| Sep 20, 6:13 PM CDT | Severe Thunderstorm Warning | EAX | Bates | 47 min |
| Sep 20, 6:23 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Ray | 52 min |
| Sep 20, 6:34 PM CDT | Special Weather Statement | EAX | Cass | 26 min |
| Sep 20, 6:47 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Lafayette, Ray | 43 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.