Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 104, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Jul 10, 2021, 12:34 AM CDT for 5 counties in Kansas. It was in force for 56 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
- Jul 10, 2021, 12:34 AM CDT (05:34 UTC)
- Expired
- Jul 10, 2021, 1:30 AM CDT
- In force
- 56 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), 85 km from the middle of the area, began a volume at 05:33 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 |
|---|---|---|---|
| Jul 10, 1:22 AM CDT | TSTM WND GST 64 | 4 E Riley, 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 |
|---|---|---|---|
| Jul 9, 9:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 5.6 hours before the alert went out and 121 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
- 2790 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1645 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.9
The text
As transmitted.
766
WUUS53 KTOP 100534
SVRTOP
KSC027-117-149-161-201-100630-
/O.NEW.KTOP.SV.W.0104.210710T0534Z-210710T0630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
1234 AM CDT Sat Jul 10 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...
Southeastern Washington County in north central Kansas...
Clay County in north central Kansas...
Marshall County in northeastern Kansas...
* Until 130 AM CDT.
* At 1233 AM CDT, severe thunderstorms were located along a line
extending from near Blue Springs to 5 miles north of Barnes to near
Aurora, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Clay Center, Marysville, Blue Rapids, Blaine, Riley, Frankfort,
Waterville, Clifton, Leonardville, Axtell, Olsburg, Beattie,
Morganville, Randolph, Barnes, Summerfield, Green, Vermillion,
Oketo and Vining.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3956 9623 3925 9683 3934 9737 3959 9737
3960 9710 3979 9685 4000 9682 4000 9624
TIME...MOT...LOC 0533Z 278DEG 49KT 4013 9663 3979 9690 3944 9756
HAIL...<.75IN
WIND...60MPH
$$
CP3 follow-up statements
259
WWUS53 KTOP 100540 RRA
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
1240 AM CDT Sat Jul 10 2021
KSC027-117-149-161-201-100630-
/O.CON.KTOP.SV.W.0104.000000T0000Z-210710T0630Z/
Riley-Pottawatomie-Washington-Clay-Marshall-
1240 AM CDT Sat Jul 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR NORTHWESTERN RILEY...NORTHWESTERN POTTAWATOMIE...SOUTHEASTERN
WASHINGTON...CLAY AND MARSHALL COUNTIES...
At 1240 AM CDT, severe thunderstorms were located along a line
extending from 8 miles east of Blue Springs to 6 miles north of
Waterville to 4 miles east of Aurora, moving east at 55 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Clay Center, Marysville, Blue Rapids, Blaine, Riley, Frankfort,
Waterville, Clifton, Leonardville, Axtell, Olsburg, Beattie,
Morganville, Randolph, Barnes, Summerfield, Green, Vermillion, Oketo
and Vining.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3956 9623 3925 9683 3934 9737 3959 9737
3960 9710 3979 9685 4000 9682 4000 9624
TIME...MOT...LOC 0540Z 278DEG 49KT 4012 9651 3978 9678 3943 9744
HAIL...<.75IN
WIND...70MPH
$$
CP471
WWUS53 KTOP 100604
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
104 AM CDT Sat Jul 10 2021
KSC201-100613-
/O.CAN.KTOP.SV.W.0104.000000T0000Z-210710T0630Z/
Washington-
104 AM CDT Sat Jul 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON COUNTY
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 500 AM CDT for
north central and northeastern Kansas.
LAT...LON 4000 9624 3956 9623 3925 9683 3934 9737
3949 9736 3957 9700 3957 9681 3981 9681
3990 9661
TIME...MOT...LOC 0603Z 328DEG 53KT 3972 9623 3938 9650 3932 9736
$$
KSC027-117-149-161-100630-
/O.CON.KTOP.SV.W.0104.000000T0000Z-210710T0630Z/
Riley-Pottawatomie-Clay-Marshall-
104 AM CDT Sat Jul 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR NORTHWESTERN RILEY...NORTHWESTERN POTTAWATOMIE...NORTHERN CLAY
AND MARSHALL COUNTIES...
At 103 AM CDT, severe thunderstorms were located along a line
extending from near Vermillion to 4 miles west of Westmoreland to 4
miles north of Oak Hill, moving southeast at 60 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Clay Center, Marysville, Blue Rapids, Blaine, Riley, Frankfort,
Waterville, Leonardville, Axtell, Olsburg, Beattie, Morganville,
Randolph, Green, Vermillion, Idana, Lillis and Tuttle Creek Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4000 9624 3956 9623 3925 9683 3934 9737
3949 9736 3957 9700 3957 9681 3981 9681
3990 9661
TIME...MOT...LOC 0603Z 328DEG 53KT 3972 9623 3938 9650 3932 9736
HAIL...<.75IN
WIND...70MPH
$$
CP/BB540
WWUS53 KTOP 100626
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
126 AM CDT Sat Jul 10 2021
KSC027-117-149-161-100636-
/O.EXP.KTOP.SV.W.0104.000000T0000Z-210710T0630Z/
Riley-Pottawatomie-Clay-Marshall-
126 AM CDT Sat Jul 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RILEY...
NORTHWESTERN POTTAWATOMIE...NORTHERN CLAY AND MARSHALL COUNTIES WILL
EXPIRE AT 130 AM 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 500 AM CDT for
north central and northeastern Kansas.
LAT...LON 4000 9624 3956 9623 3925 9683 3934 9737
3949 9736 3957 9700 3957 9681 3981 9681
3990 9661
TIME...MOT...LOC 0626Z 278DEG 49KT 3968 9584 3934 9612 3928 9698
$$
CP/BBThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 11:19 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 56 min |
| Jul 9, 11:54 PM CDT | Severe Thunderstorm Warning | TOP | Washington | 66 min |
| Jul 10, 12:00 AM CDT | Severe Thunderstorm Warning | TOP | Cloud | 60 min |
| Jul 10, 12:13 AM CDT | Severe Thunderstorm Warning | TOP | Republic | 32 min |
| Jul 10, 12:57 AM CDT | Severe Thunderstorm Warning | TOP | Clay, Dickinson, Geary, Marshall, Nemaha, Pottawatomie and 1 more | 48 min |
| Jul 10, 1:19 AM CDT | Severe Thunderstorm Warning | TOP | Geary, Jackson, Morris, Shawnee, Wabaunsee | 56 min |
| Jul 10, 1:45 AM CDT | Severe Thunderstorm Warning | TOP | Brown | 30 min |
| Jul 10, 1:49 AM CDT | Special Weather Statement | TOP | Riley | 26 min |
| Jul 10, 1:58 AM CDT | Severe Thunderstorm Warning | TOP | Coffey, Douglas, Franklin, Jefferson, Lyon, Morris and 3 more | 47 min |
| Jul 10, 2:44 AM CDT | Special Weather Statement | TOP | Riley | 31 min |
| Jul 10, 3:08 AM CDT | Special Weather Statement | TOP | Wabaunsee | 37 min |
| Jul 10, 3:27 AM CDT | Special Weather Statement | TOP | Lyon | 33 min |
| Jul 10, 4:02 AM CDT | Special Weather Statement | TOP | Lyon, Osage | 28 min |
| Jul 10, 4:13 AM CDT | Special Weather Statement | TOP | Cloud | 32 min |
| Jul 10, 4:25 AM CDT | Severe Thunderstorm Warning | TOP | Cloud, Republic | 35 min |
| Jul 10, 4:36 AM CDT | Special Weather Statement | TOP | Anderson, Franklin | 54 min |
| Jul 10, 4:40 AM CDT | Special Weather Statement | TOP | Clay | 35 min |
| Jul 10, 5:05 AM CDT | Special Weather Statement | TOP | Riley | 40 min |
| Jul 10, 5:58 AM CDT | Special Weather Statement | TOP | Wabaunsee | 47 min |
| Jul 10, 3:34 PM CDT | Special Weather Statement | TOP | Republic | 56 min |
| Jul 10, 4:11 PM CDT | Special Weather Statement | TOP | Washington | 34 min |
| Jul 10, 4:45 PM CDT | Special Weather Statement | TOP | Washington | 30 min |
| Jul 10, 4:53 PM CDT | Special Weather Statement | TOP | Brown, Nemaha | 67 min |
| Jul 10, 5:05 PM CDT | Severe Thunderstorm Warning | TOP | Marshall, Pottawatomie, Washington | 25 min |
| Jul 10, 5:26 PM CDT | Special Weather Statement | TOP | Pottawatomie | 34 min |
| Jul 10, 5:47 PM CDT | Special Weather Statement | TOP | Pottawatomie | 28 min |
| Jul 10, 5:54 PM CDT | Special Weather Statement | TOP | Dickinson, Geary | 36 min |
| Jul 10, 6:16 PM CDT | Special Weather Statement | TOP | Jefferson | 29 min |
| Jul 10, 6:47 PM CDT | Special Weather Statement | TOP | Douglas | 28 min |
| Jul 10, 6:52 PM CDT | Special Weather Statement | TOP | Douglas, Osage, Shawnee | 53 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.