Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 161, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 31, 2021, 8:10 AM CDT for Brown County, Jackson County, Nemaha County, Kansas. It was in force for 26 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 31, 2021, 8:10 AM CDT (13:10 UTC)
- Expired
- Aug 31, 2021, 8:36 AM CDT
- In force
- 26 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Brown County, KS, Jackson County, KS, Nemaha County, KS
The radar
The Topeka radar (KTWX), 93 km from the middle of the area, began a volume at 13:12 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 nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 1.2 hours before the alert went out and 72 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
- 986 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 1015 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
647
WUUS53 KTOP 311310
SVRTOP
KSC013-085-131-311400-
/O.NEW.KTOP.SV.W.0161.210831T1310Z-210831T1400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
810 AM CDT Tue Aug 31 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Northeastern Jackson County in northeastern Kansas...
Southeastern Nemaha County in northeastern Kansas...
Brown County in northeastern Kansas...
* Until 900 AM CDT.
* At 809 AM CDT, a severe thunderstorm was located over Powhattan,
moving southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Holton, Hiawatha, Sabetha, Horton, Wetmore, Everest, Fairview,
Robinson, Whiting, Netawaka, Goff, Powhattan, Hamlin, Willis,
Kickapoo Reservation and Woodlawn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3995 9534 3965 9534 3965 9556 3957 9556
3957 9557 3942 9557 3942 9559 3941 9559
3937 9572 3982 9609 3999 9537
TIME...MOT...LOC 1309Z 309DEG 36KT 3976 9566
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Teefey2 follow-up statements
437
WWUS53 KTOP 311328
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
828 AM CDT Tue Aug 31 2021
KSC013-085-131-311400-
/O.CON.KTOP.SV.W.0161.000000T0000Z-210831T1400Z/
Jackson-Nemaha-Brown-
828 AM CDT Tue Aug 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR NORTHEASTERN JACKSON...SOUTHEASTERN NEMAHA AND SOUTHERN BROWN
COUNTIES...
At 827 AM CDT, a severe thunderstorm was located near Horton, moving
southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Holton, Horton, Wetmore, Everest, Robinson, Whiting, Netawaka, Goff,
Powhattan, Willis and Kickapoo Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3965 9534 3965 9556 3957 9556 3957 9557
3942 9557 3942 9559 3941 9559 3937 9572
3968 9597 3985 9534
TIME...MOT...LOC 1327Z 309DEG 36KT 3964 9547
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Teefey472
WWUS53 KTOP 311336
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
836 AM CDT Tue Aug 31 2021
KSC013-085-131-311346-
/O.CAN.KTOP.SV.W.0161.000000T0000Z-210831T1400Z/
Jackson-Nemaha-Brown-
836 AM CDT Tue Aug 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JACKSON...
SOUTHEASTERN NEMAHA AND SOUTHERN BROWN COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 3965 9534 3965 9556 3957 9556 3957 9557
3942 9557 3942 9559 3941 9559 3937 9572
3968 9597 3985 9534
TIME...MOT...LOC 1332Z 309DEG 36KT 3958 9538
$$
TeefeyThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 5:32 AM CDT | Special Weather Statement | TOP | Brown | 13 min |
| Aug 31, 7:30 AM CDT | Severe Thunderstorm Warning | TOP | Marshall, Washington | 25 min |
| Aug 31, 7:49 AM CDT | Special Weather Statement | TOP | Brown, Nemaha | 26 min |
| Aug 31, 7:57 AM CDT | Special Weather Statement | TOP | Marshall, Washington | 33 min |
| Aug 31, 8:35 AM CDT | Special Weather Statement | TOP | Jackson, Jefferson | 25 min |
| Aug 31, 8:55 AM CDT | Special Weather Statement | TOP | Jefferson, Shawnee | 35 min |
| Aug 31, 9:24 AM CDT | Special Weather Statement | TOP | Geary, Wabaunsee | 36 min |
| Aug 31, 9:26 AM CDT | Special Weather Statement | TOP | Douglas, Franklin, Osage | 34 min |
| Aug 31, 9:53 AM CDT | Special Weather Statement | TOP | Franklin, Osage | 37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.