Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 35, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 11, 2021, 5:42 PM CDT for Linn County, Kansas. It was in force for 33 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
- Jun 11, 2021, 5:42 PM CDT (22:42 UTC)
- Expired
- Jun 11, 2021, 6:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
County Linn County, KS
The radar
The Pleasant Hill radar (KEAX), 94 km from the middle of the area, began a volume at 22:44 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 |
|---|---|---|---|
| Jun 11, 5:56 PM CDT | TSTM WND GST 70 | Blue Mound, KS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 11, 12:32 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.7 hours before the alert went out and 105 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
- 2135 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1019 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.2
The text
As transmitted.
889
WUUS53 KEAX 112242
SVREAX
KSC107-112315-
/O.NEW.KEAX.SV.W.0035.210611T2242Z-210611T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
542 PM CDT Fri Jun 11 2021
The National Weather Service in Pleasant Hill has issued a
* Severe Thunderstorm Warning for...
Western Linn County in east central Kansas...
* Until 615 PM CDT.
* At 541 PM CDT, severe thunderstorms were located along a line
extending from 7 miles north of Blue Mound to near Kincaid, moving
southeast at 30 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Severe thunderstorms will be near...
Blue Mound around 550 PM CDT.
Mound City around 555 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3804 9507 3821 9508 3825 9507 3826 9506
3833 9506 3836 9498 3804 9467
TIME...MOT...LOC 2241Z 328DEG 27KT 3819 9499 3805 9515
HAIL...1.00IN
WIND...70MPH
$$
Leighton2 follow-up statements
342
WWUS53 KEAX 112305
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
605 PM CDT Fri Jun 11 2021
KSC107-112315-
/O.CON.KEAX.SV.W.0035.000000T0000Z-210611T2315Z/
Linn KS-
605 PM CDT Fri Jun 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN LINN COUNTY...
At 605 PM CDT, severe thunderstorms were located along a line
extending from 6 miles south of Mound City to near Bronson, moving
southeast at 30 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
These severe thunderstorms will remain over mainly rural areas of
southwestern Linn County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3804 9507 3822 9507 3822 9484 3804 9467
TIME...MOT...LOC 2305Z 328DEG 27KT 3804 9487 3790 9503
HAIL...1.00IN
WIND...70MPH
$$
Leighton004
WWUS53 KEAX 112315
SVSEAX
Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
615 PM CDT Fri Jun 11 2021
KSC107-112325-
/O.EXP.KEAX.SV.W.0035.000000T0000Z-210611T2315Z/
Linn KS-
615 PM CDT Fri Jun 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LINN COUNTY HAS
EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
east central Kansas.
LAT...LON 3804 9507 3822 9507 3822 9484 3804 9467
TIME...MOT...LOC 2315Z 328DEG 27KT 3798 9482 3784 9498
$$
LeightonThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 1:16 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Doniphan | 29 min |
| Jun 11, 1:41 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Doniphan | 34 min |
| Jun 11, 2:12 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Doniphan, Leavenworth | 63 min |
| Jun 11, 2:52 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 68 min |
| Jun 11, 3:59 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Miami, Wyandotte | 31 min |
| Jun 11, 4:02 PM CDT | Areal Flood Advisory | EAX | Leavenworth, Wyandotte | 4 hr |
| Jun 11, 4:57 PM CDT | Severe Thunderstorm Warning | EAX | Linn, Miami | 48 min |
| Jun 11, 5:58 PM CDT | River Flood Warning | EAX | Johnson | 81 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 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.