Alert archive / Missouri / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 49, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 2021, 9:29 PM CDT for Cass County, Jackson County, Johnson County, Missouri. It was in force for 20 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
- Jun 20, 2021, 9:29 PM CDT (02:29 UTC)
- Expired
- Jun 20, 2021, 9:49 PM CDT
- In force
- 20 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cass County, MO, Jackson County, MO, Johnson County, MO
The radar
The Pleasant Hill radar (KEAX), 3 km from the middle of the area, began a volume at 02:32 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 |
|---|---|---|---|
| Jun 20, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 2.5 hours before the alert went out and 122 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
- 2316 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2228 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.8
The text
As transmitted.
717
WUUS53 KEAX 210229
SVREAX
MOC037-095-101-210300-
/O.NEW.KEAX.SV.W.0049.210621T0229Z-210621T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
929 PM CDT Sun Jun 20 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Northeastern Cass County in west central Missouri...
Southeastern Jackson County in west central Missouri...
West central Johnson County in west central Missouri...
* Until 1000 PM CDT.
* At 929 PM CDT, a severe thunderstorm was located over Greenwood,
moving east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Pleasant Hill and Baldwin Park around 935 PM CDT.
Lone Jack around 940 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3879 9444 3890 9437 3892 9411 3891 9410
3879 9406 3869 9418
TIME...MOT...LOC 0229Z 287DEG 36KT 3884 9433
HAIL...0.75IN
WIND...60MPH
$$
Blair1 follow-up statement
841
WWUS53 KEAX 210249
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
949 PM CDT Sun Jun 20 2021
MOC037-095-101-210258-
/O.CAN.KEAX.SV.W.0049.000000T0000Z-210621T0300Z/
Cass MO-Jackson MO-Johnson MO-
949 PM CDT Sun Jun 20 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CASS...
SOUTHEASTERN JACKSON AND WEST CENTRAL JOHNSON COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
west central Missouri.
LAT...LON 3879 9444 3890 9437 3892 9411 3891 9410
3879 9406 3869 9418
TIME...MOT...LOC 0246Z 287DEG 36KT 3878 9409
$$
BlairThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:15 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Harrison, Mercer, Putnam, Sullivan | 45 min |
| Jun 20, 7:57 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Clinton, Platte | 33 min |
| Jun 20, 8:01 PM CDT | Severe Thunderstorm Warning | EAX | Adair, Linn, Macon, Sullivan | 44 min |
| Jun 20, 8:39 PM CDT | Severe Thunderstorm Warning | EAX | Adair, Macon | 36 min |
| Jun 20, 8:54 PM CDT | Special Weather Statement | EAX | Livingston | 21 min |
| Jun 20, 9:17 PM CDT | Special Weather Statement | EAX | Jackson | 28 min |
| Jun 20, 10:27 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard | 33 min |
| Jun 20, 11:05 PM CDT | Special Weather Statement | EAX | Bates | 25 min |
| Jun 21, 5:19 AM CDT | River Flood Warning | EAX | Howard | 9 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.