Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 119, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 7, 2021, 9:49 PM CDT for 6 counties in Kansas. It was in force for 41 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, 9:49 PM CDT (02:49 UTC)
- Expired
- Aug 7, 2021, 10:30 PM CDT
- In force
- 41 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Geary County, KS, Lyon County, KS, Morris County, KS, Pottawatomie County, KS, Riley County, KS, Wabaunsee County, KS
The radar
The Topeka radar (KTWX), 49 km from the middle of the area, began a volume at 02:52 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, 2.8 hours before the alert went out and 100 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.
556
WUUS53 KTOP 080249
SVRTOP
KSC061-111-127-149-161-197-080330-
/O.NEW.KTOP.SV.W.0119.210808T0249Z-210808T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
949 PM CDT Sat Aug 7 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Geary County in east central Kansas...
Riley County in northeastern Kansas...
Morris County in east central Kansas...
Western Wabaunsee County in east central Kansas...
Southern Pottawatomie County in northeastern Kansas...
Northwestern Lyon County in east central Kansas...
* Until 1030 PM CDT.
* At 949 PM CDT, severe thunderstorms were located along a line
extending from near Riley to 3 miles northwest of Burdick, moving
east at 50 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...
Manhattan, Junction City, Wamego, Herington, Council Grove, Alma,
Ogden, Grandview Plaza, Riley, St. George, White City, Milford,
Alta Vista, Dwight, McFarland, Paxico, Belvue, Louisville, Wilsey
and Parkerville.
This includes Interstate 70 between mile markers 291 and 334.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3881 9693 3881 9689 3887 9689 3887 9693
3898 9693 3898 9695 3934 9695 3936 9612
3853 9622 3852 9693
TIME...MOT...LOC 0249Z 272DEG 42KT 3931 9681 3860 9688
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Reese2 follow-up statements
737
WWUS53 KTOP 080311
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
1011 PM CDT Sat Aug 7 2021
KSC061-111-127-149-161-197-080330-
/O.CON.KTOP.SV.W.0119.000000T0000Z-210808T0330Z/
Geary-Riley-Morris-Wabaunsee-Pottawatomie-Lyon-
1011 PM CDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR GEARY...SOUTHERN RILEY...MORRIS...WESTERN WABAUNSEE...SOUTHERN
POTTAWATOMIE AND NORTHWESTERN LYON COUNTIES...
At 1010 PM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Tuttle Creek Lake to 4 miles northeast
of Burdick, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Manhattan, Junction City, Wamego, Herington, Council Grove, Alma,
Ogden, Grandview Plaza, Riley, St. George, White City, Milford, Alta
Vista, Dwight, McFarland, Paxico, Belvue, Louisville, Wilsey and
Parkerville.
This includes Interstate 70 between mile markers 291 and 334.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3898 9695 3909 9695 3934 9683 3936 9612
3853 9622 3852 9693 3881 9693 3881 9689
3887 9689 3887 9693 3898 9693
TIME...MOT...LOC 0310Z 270DEG 40KT 3930 9652 3860 9678
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese506
WWUS53 KTOP 080324
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
1024 PM CDT Sat Aug 7 2021
KSC061-111-127-149-161-197-080334-
/O.EXP.KTOP.SV.W.0119.000000T0000Z-210808T0330Z/
Geary-Riley-Morris-Wabaunsee-Pottawatomie-Lyon-
1024 PM CDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR GEARY...SOUTHERN RILEY...
MORRIS...WESTERN WABAUNSEE...SOUTHERN POTTAWATOMIE AND NORTHWESTERN
LYON 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
central, northeastern and east central Kansas.
LAT...LON 3898 9695 3909 9695 3934 9683 3936 9612
3853 9622 3852 9693 3881 9693 3881 9689
3887 9689 3887 9693 3898 9693
TIME...MOT...LOC 0324Z 272DEG 42KT 3929 9632 3859 9658
$$
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, 9:41 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Marshall, Pottawatomie, Riley, Washington | 49 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.