Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 116, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 7, 2021, 8:56 PM CDT for Clay County, Riley County, Washington County, Kansas. 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
- Aug 7, 2021, 8:56 PM CDT (01:56 UTC)
- Expired
- Aug 7, 2021, 9:45 PM CDT
- In force
- 49 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clay County, KS, Riley County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 107 km from the middle of the area, began a volume at 01:57 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 |
|---|---|---|---|
| Aug 7, 6:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 1.9 hours before the alert went out and 145 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
- 1803 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1923 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 7.5
The text
As transmitted.
568
WUUS53 KTOP 080156
SVRTOP
KSC027-161-201-080245-
/O.NEW.KTOP.SV.W.0116.210808T0156Z-210808T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
856 PM CDT Sat Aug 7 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Northwestern Riley County in northeastern Kansas...
Washington County in north central Kansas...
Northern Clay County in north central Kansas...
* Until 945 PM CDT.
* At 855 PM CDT, severe thunderstorms were located along a line
extending from near Narka to near Miltonvale, moving east at 45
mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 852 CDT the Concordia
Airport reported a wind gust to 63 mph.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Clay Center, Washington, Hanover, Clifton, Leonardville, Linn,
Greenleaf, Morganville, Barnes, Morrowville, Green, Palmer, Haddam,
Mahaska, Vining, Hollenberg and Idana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4000 9681 3935 9680 3933 9737 4000 9737
TIME...MOT...LOC 0155Z 253DEG 41KT 3997 9747 3936 9750
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese2 follow-up statements
683 WWUS53 KTOP 080224 SVSTOP Severe Weather Statement National Weather Service Topeka KS 924 PM CDT Sat Aug 7 2021 KSC027-161-201-080245- /O.CON.KTOP.SV.W.0116.000000T0000Z-210808T0245Z/ Riley-Washington-Clay- 924 PM CDT Sat Aug 7 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR NORTHWESTERN RILEY...WASHINGTON AND NORTHERN CLAY COUNTIES... At 924 PM CDT, severe thunderstorms were located along a line extending from 7 miles southeast of Fairbury to 3 miles southwest of Clay Center, moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Clay Center, Washington, Hanover, Clifton, Leonardville, Linn, Greenleaf, Morganville, Barnes, Morrowville, Green, Palmer, Haddam, Mahaska, Vining, Hollenberg and Idana. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4000 9681 3935 9680 3933 9737 4000 9737 TIME...MOT...LOC 0224Z 253DEG 40KT 4006 9710 3935 9717 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Reese
146
WWUS53 KTOP 080243
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
943 PM CDT Sat Aug 7 2021
KSC027-161-201-080252-
/O.EXP.KTOP.SV.W.0116.000000T0000Z-210808T0245Z/
Riley-Washington-Clay-
943 PM CDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RILEY...
WASHINGTON AND NORTHERN CLAY COUNTIES WILL EXPIRE AT 945 PM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central and northeastern Kansas.
Remember, a Severe Thunderstorm Warning still remains in effect for
eastern Washington County, northeastern Clay County, and northern
Riley County until 1030 PM CDT.
LAT...LON 4000 9681 3935 9680 3933 9737 4000 9737
TIME...MOT...LOC 0242Z 270DEG 41KT 4012 9685 3941 9692
$$
ReeseThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:19 PM CDT | Severe Thunderstorm Warning | TOP | Cloud, Republic | 41 min |
| Aug 7, 8:26 PM CDT | Special Weather Statement | TOP | Cloud, Ottawa | 49 min |
| Aug 7, 8:42 PM CDT | Severe Thunderstorm Warning | TOP | Cloud, Ottawa | 33 min |
| Aug 7, 9:08 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Dickinson, Geary, Morris, Ottawa, Riley | 52 min |
| Aug 7, 9:41 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Marshall, Pottawatomie, Riley, Washington | 49 min |
| Aug 7, 9:49 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Lyon, Morris, Pottawatomie, Riley, Wabaunsee | 41 min |
| Aug 7, 10:28 PM CDT | Special Weather Statement | TOP | Morris, Wabaunsee | 32 min |
| Aug 7, 10:29 PM CDT | Special Weather Statement | TOP | Nemaha | 31 min |
| Aug 7, 10:56 PM CDT | Special Weather Statement | TOP | Jackson, Shawnee | 34 min |
| Aug 7, 11:28 PM CDT | Special Weather Statement | TOP | Brown, Douglas, Jackson, Jefferson, Lyon, Morris and 3 more | 32 min |
| Aug 8, 12:00 AM CDT | Special Weather Statement | TOP | Anderson, Coffey, Douglas, Franklin, Lyon, Osage | 30 min |
| Aug 8, 2:27 PM CDT | Heat Advisory | TOP | Anderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more | 4 days |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.