Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 15, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at May 27, 2021, 4:05 AM CDT for 4 counties in Missouri. It was in force for 40 min. 1 report 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
- May 27, 2021, 4:05 AM CDT (09:05 UTC)
- Expired
- May 27, 2021, 4:45 AM CDT
- In force
- 40 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO
The radar
The Pleasant Hill radar (KEAX), 102 km from the middle of the area, began a volume at 09:06 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 |
|---|---|---|---|
| May 27, 4:31 AM CDT | TSTM WND GST 48 | 2 Wsw Cameron, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 9.1 hours before the alert went out and 140 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
- 328 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2025 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
001
WUUS53 KEAX 270905
SVREAX
MOC025-049-061-063-270945-
/O.NEW.KEAX.SV.W.0015.210527T0905Z-210527T0945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
405 AM CDT Thu May 27 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Southwestern Daviess County in north central Missouri...
Clinton County in northwestern Missouri...
Northwestern Caldwell County in north central Missouri...
Southeastern DeKalb County in northwestern Missouri...
* Until 445 AM CDT.
* At 405 AM CDT, severe thunderstorms were located along a line
extending from near Gower to near Plattsburg to near Lathrop,
moving northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Lathrop around 410 AM CDT.
Stewartsville around 415 AM CDT.
Osborn around 420 AM CDT.
Cameron around 425 AM CDT.
Other locations in the path of these severe thunderstorms include
Kingston, Maysville and Hamilton.
This includes Interstate 35 in Missouri between mile markers 35 and
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3991 9406 3970 9396 3947 9433 3957 9447
3962 9460 3970 9460 3996 9438
TIME...MOT...LOC 0905Z 223DEG 38KT 3966 9460 3961 9443 3951 9434
HAIL...0.88IN
WIND...60MPH
$$
Leighton3 follow-up statements
268
WWUS53 KEAX 270923
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
423 AM CDT Thu May 27 2021
MOC025-049-061-063-270945-
/O.CON.KEAX.SV.W.0015.000000T0000Z-210527T0945Z/
Daviess MO-Clinton MO-Caldwell MO-DeKalb MO-
423 AM CDT Thu May 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN DAVIESS...NORTHEASTERN CLINTON...NORTHWESTERN
CALDWELL AND SOUTHEASTERN DEKALB COUNTIES...
At 423 AM CDT, severe thunderstorms were located along a line
extending from near Osborn to Cameron to 6 miles west of Kingston,
moving northeast at 55 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Hamilton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3991 9406 3970 9396 3957 9417 3977 9454
3996 9438
TIME...MOT...LOC 0923Z 225DEG 46KT 3980 9441 3975 9424 3965 9415
HAIL...0.88IN
WIND...60MPH
$$
Leighton577
WWUS53 KEAX 270935
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
435 AM CDT Thu May 27 2021
MOC049-270944-
/O.CAN.KEAX.SV.W.0015.000000T0000Z-210527T0945Z/
Clinton MO-
435 AM CDT Thu May 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLINTON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3991 9406 3970 9396 3964 9409 3971 9421
3974 9421 3975 9427 3986 9446 3996 9438
TIME...MOT...LOC 0934Z 213DEG 49KT 3991 9432 3986 9414 3976 9405
$$
MOC025-061-063-270945-
/O.CON.KEAX.SV.W.0015.000000T0000Z-210527T0945Z/
Daviess MO-Caldwell MO-DeKalb MO-
435 AM CDT Thu May 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CDT
FOR SOUTHWESTERN DAVIESS...NORTHWESTERN CALDWELL AND SOUTHEASTERN
DEKALB COUNTIES...
At 434 AM CDT, severe thunderstorms were located along a line
extending from near Maysville to 9 miles northeast of Cameron to near
Hamilton, moving northeast at 55 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Cameron, Hamilton, Maysville, Kidder, Winston, Altamont, Weatherby
and Amity.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3991 9406 3970 9396 3964 9409 3971 9421
3974 9421 3975 9427 3986 9446 3996 9438
TIME...MOT...LOC 0934Z 213DEG 49KT 3991 9432 3986 9414 3976 9405
HAIL...0.88IN
WIND...60MPH
$$
Leighton654
WWUS53 KEAX 270942
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
442 AM CDT Thu May 27 2021
MOC025-061-063-270952-
/O.EXP.KEAX.SV.W.0015.000000T0000Z-210527T0945Z/
Daviess MO-Caldwell MO-DeKalb MO-
442 AM CDT Thu May 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DAVIESS...
NORTHWESTERN CALDWELL AND SOUTHEASTERN DEKALB COUNTIES WILL EXPIRE AT
445 AM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Pleasant Hill.
LAT...LON 3991 9406 3970 9396 3964 9409 3971 9421
3974 9421 3975 9427 3986 9446 3996 9438
TIME...MOT...LOC 0942Z 223DEG 38KT 3997 9425 3992 9407 3982 9398
$$
LeightonThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 1:20 AM CDT | River Flood Warning | EAX | Carroll | 32 hr |
| May 27, 1:20 AM CDT | River Flood Warning | EAX | Cooper, Saline | 55 hr |
| May 27, 1:20 AM CDT | River Flood Warning | EAX | Cass, Henry, Johnson | 4 days |
| May 27, 1:20 AM CDT | River Flood Warning | EAX | Johnson, Pettis | 39 hr |
| May 27, 3:15 AM CDT | Special Weather Statement | EAX | Andrew | 45 min |
| May 27, 3:51 AM CDT | Special Weather Statement | EAX | Clay, Clinton | 39 min |
| May 27, 4:26 AM CDT | Special Weather Statement | EAX | Caldwell, Carroll | 49 min |
| May 27, 4:50 AM CDT | Special Weather Statement | EAX | Henry | 40 min |
| May 27, 5:27 AM CDT | Special Weather Statement | EAX | Chariton, Linn, Macon, Sullivan | 48 min |
| May 27, 5:37 AM CDT | Special Weather Statement | EAX | Pettis | 38 min |
| May 27, 6:22 AM CDT | River Flood Warning | EAX | Clay, Ray | 27 hr |
| May 27, 6:28 AM CDT | Special Weather Statement | EAX | Platte | 32 min |
| May 27, 6:51 AM CDT | Special Weather Statement | EAX | Jackson | 39 min |
| May 27, 7:51 AM CDT | Areal Flood Advisory | EAX | Bates, Cass | 71 min |
| May 27, 8:31 AM CDT | Areal Flood Advisory | EAX | Henry, Johnson, Pettis | 31 min |
| May 27, 9:02 AM CDT | Flash Flood Warning | EAX | Bates, Cass | 3 hr |
| May 27, 9:02 AM CDT | Flash Flood Warning | EAX | Henry, Johnson, Pettis | 3 hr |
| May 27, 9:35 AM CDT | River Flood Warning | EAX | Bates, Cass, Henry | 56 hr |
| May 27, 10:50 AM CDT | Flash Flood Watch | EAX | Bates, Cass, Henry, Johnson, Pettis | 8 hr |
| May 27, 11:23 AM CDT | River Flood Warning | EAX | Bates | 4 days |
| May 27, 11:46 AM CDT | Areal Flood Warning | EAX | Henry, Johnson, Pettis | 9 hr |
| May 27, 11:46 AM CDT | Areal Flood Warning | EAX | Bates, Cass | 9 hr |
| May 27, 12:25 PM CDT | River Flood Warning | EAX | Howard | 8 hr |
| May 27, 12:25 PM CDT | River Flood Warning | EAX | Cooper | 19 hr |
| May 27, 4:50 PM CDT | Special Weather Statement | EAX | Clay | 40 min |
| May 27, 4:51 PM CDT | Areal Flood Advisory | EAX | Clay, Jackson, Platte | 3 hr |
| May 27, 5:05 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Ray | 25 min |
| May 27, 5:40 PM CDT | Severe Thunderstorm Warning | EAX | Platte | 35 min |
| May 27, 5:55 PM CDT | Flash Flood Warning | EAX | Clay, Jackson, Platte | 3 hr |
| May 27, 5:58 PM CDT | Flash Flood Warning | EAX | Clay, Ray | 3 hr |
| May 27, 6:11 PM CDT | Special Weather Statement | EAX | Clay | 34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.