Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 118, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 7, 2021, 9:41 PM CDT for 5 counties in Kansas. It was in force for 49 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
- Aug 7, 2021, 9:41 PM CDT (02:41 UTC)
- Expired
- Aug 7, 2021, 10:30 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, Marshall County, KS, Pottawatomie County, KS, Riley County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 87 km from the middle of the area, began a volume at 02:41 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 |
|---|---|---|---|
| Aug 7, 10:08 PM CDT | TSTM WND DMG | Blue Rapids, KS | 4 INCH DIAMETER TREE BRANCH BLOWN DOWN. |
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 |
|---|---|---|---|
| Aug 7, 6:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 2.7 hours before the alert went out and 113 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.
339 WUUS53 KTOP 080241 SVRTOP KSC027-117-149-161-201-080330- /O.NEW.KTOP.SV.W.0118.210808T0241Z-210808T0330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Topeka KS 941 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... Northwestern Pottawatomie County in northeastern Kansas... Eastern Washington County in north central Kansas... Northeastern Clay County in north central Kansas... Marshall County in northeastern Kansas... * Until 1030 PM CDT. * At 940 PM CDT, severe thunderstorms were located along a line extending from 5 miles east of Hollenberg to 4 miles southeast of Green, moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Marysville, Blue Rapids, Westmoreland, Blaine, Frankfort, Hanover, Waterville, Leonardville, Axtell, Greenleaf, Olsburg, Beattie, Randolph, Barnes, Summerfield, Green, Vermillion, Wheaton, Oketo and Lillis. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4000 9624 3936 9624 3934 9704 4000 9696 TIME...MOT...LOC 0240Z 261DEG 39KT 3998 9689 3938 9697 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Reese
2 follow-up statements
617
WWUS53 KTOP 080308
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
1008 PM CDT Sat Aug 7 2021
KSC027-201-080317-
/O.CAN.KTOP.SV.W.0118.000000T0000Z-210808T0330Z/
Washington-Clay-
1008 PM CDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WASHINGTON AND
NORTHEASTERN CLAY COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central and northeastern Kansas.
LAT...LON 4000 9624 3936 9624 3935 9682 3957 9681
3958 9681 4000 9680
TIME...MOT...LOC 0307Z 270DEG 39KT 4002 9653 3942 9661
$$
KSC117-149-161-080330-
/O.CON.KTOP.SV.W.0118.000000T0000Z-210808T0330Z/
Riley-Pottawatomie-Marshall-
1008 PM CDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR NORTH CENTRAL RILEY...NORTHWESTERN POTTAWATOMIE AND MARSHALL
COUNTIES...
At 1007 PM CDT, severe thunderstorms were located along a line
extending from 5 miles northeast of Oketo to Olsburg, moving east at
45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Marysville, Blue Rapids, Westmoreland, Blaine, Frankfort, Waterville,
Axtell, Olsburg, Beattie, Randolph, Summerfield, Vermillion, Wheaton,
Oketo, Lillis and Bremen.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4000 9624 3936 9624 3935 9682 3957 9681
3958 9681 4000 9680
TIME...MOT...LOC 0307Z 270DEG 39KT 4002 9653 3942 9661
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese827
WWUS53 KTOP 080323
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
1023 PM CDT Sat Aug 7 2021
KSC117-149-161-080333-
/O.EXP.KTOP.SV.W.0118.000000T0000Z-210808T0330Z/
Riley-Pottawatomie-Marshall-
1023 PM CDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL RILEY...
NORTHWESTERN POTTAWATOMIE AND MARSHALL COUNTIES WILL EXPIRE AT 1030
PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central and northeastern Kansas.
LAT...LON 4000 9624 3936 9624 3935 9682 3957 9681
3958 9681 4000 9680
TIME...MOT...LOC 0323Z 262DEG 40KT 3995 9629 3935 9637
$$
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, 8:56 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Riley, Washington | 49 min |
| Aug 7, 9:08 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Dickinson, Geary, Morris, Ottawa, Riley | 52 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.