Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 166, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Sep 2, 2021, 7:44 PM CDT for Lyon County, Morris County, Wabaunsee County, Kansas. It was in force for 31 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
- Sep 2, 2021, 7:44 PM CDT (00:44 UTC)
- Expired
- Sep 2, 2021, 8:15 PM CDT
- In force
- 31 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lyon County, KS, Morris County, KS, Wabaunsee County, KS
The radar
The Topeka radar (KTWX), 36 km from the middle of the area, began a volume at 00:45 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 |
|---|---|---|---|
| Sep 2, 5:27 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 0.7 hours before the alert went out and 79 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
- 155 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted.
770
WUUS53 KTOP 030044
SVRTOP
KSC111-127-197-030115-
/O.NEW.KTOP.SV.W.0166.210903T0044Z-210903T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
744 PM CDT Thu Sep 2 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Northeastern Morris County in east central Kansas...
Southwestern Wabaunsee County in east central Kansas...
Northwestern Lyon County in east central Kansas...
* Until 815 PM CDT.
* At 744 PM CDT, a severe thunderstorm was located near Council Grove
Lake, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Council Grove, Alta Vista and Council Grove Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT for east central
Kansas.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3866 9659 3881 9663 3891 9634 3863 9627
TIME...MOT...LOC 0044Z 257DEG 22KT 3874 9650
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Flanagan2 follow-up statements
700
WWUS53 KTOP 030102
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
802 PM CDT Thu Sep 2 2021
KSC111-127-197-030115-
/O.CON.KTOP.SV.W.0166.000000T0000Z-210903T0115Z/
Morris-Wabaunsee-Lyon-
802 PM CDT Thu Sep 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN MORRIS...SOUTHWESTERN WABAUNSEE AND NORTHWESTERN
LYON COUNTIES...
At 801 PM CDT, a severe thunderstorm was located 5 miles northeast of
Council Grove, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Council Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT for east central
Kansas.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3865 9651 3878 9653 3888 9633 3863 9627
TIME...MOT...LOC 0101Z 263DEG 19KT 3872 9643
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Flanagan529
WWUS53 KTOP 030117
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
817 PM CDT Thu Sep 2 2021
KSC111-127-197-030127-
/O.EXP.KTOP.SV.W.0166.000000T0000Z-210903T0115Z/
Morris-Wabaunsee-Lyon-
817 PM CDT Thu Sep 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS...
SOUTHWESTERN WABAUNSEE AND NORTHWESTERN LYON COUNTIES HAS EXPIRED...
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 allowed to expire.
A Tornado Watch remains in effect until midnight CDT for east central
Kansas.
LAT...LON 3865 9651 3878 9653 3888 9633 3863 9627
TIME...MOT...LOC 0117Z 270DEG 22KT 3874 9632
$$The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 7:18 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Morris, Wabaunsee | 27 min |
| Sep 2, 8:16 PM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 2, 8:41 PM CDT | Special Weather Statement | TOP | Marshall | 34 min |
| Sep 2, 8:41 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:11 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:19 PM CDT | Special Weather Statement | TOP | Geary | 26 min |
| Sep 2, 9:43 PM CDT | Special Weather Statement | TOP | Morris | 32 min |
| Sep 3, 12:01 AM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 3, 12:09 AM CDT | River Flood Warning | TOP | Marshall | 10 hr |
| Sep 3, 12:17 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage | 7 hr |
| Sep 3, 12:31 AM CDT | Special Weather Statement | TOP | Osage | 29 min |
| Sep 3, 12:57 AM CDT | Special Weather Statement | TOP | Osage | 33 min |
| Sep 3, 1:29 AM CDT | Special Weather Statement | TOP | Shawnee | 46 min |
| Sep 3, 1:41 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage, Shawnee, Wabaunsee | 6 hr |
| Sep 3, 3:34 AM CDT | Flash Flood Watch | TOP | Anderson, Coffey, Dickinson, Douglas, Franklin, Geary and 5 more | 33 hr |
| Sep 3, 4:34 AM CDT | Areal Flood Advisory | TOP | Geary, Riley | 3 hr |
| Sep 3, 5:21 AM CDT | Flash Flood Warning | TOP | Douglas | 3 hr |
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.