Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 125, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 12, 2021, 4:41 PM CDT for Ottawa County, Kansas. It was in force for 34 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 12, 2021, 4:41 PM CDT (21:41 UTC)
- Expired
- Aug 12, 2021, 5:15 PM CDT
- In force
- 34 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Ottawa County, KS
The radar
The Topeka radar (KTWX), 142 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 193 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
- 951 J/kg
- Mixed-layer CIN
- -437 J/kg
- Mixed-layer LCL
- 1729 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
661
WUUS53 KTOP 122141
SVRTOP
KSC143-122215-
/O.NEW.KTOP.SV.W.0125.210812T2141Z-210812T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
441 PM CDT Thu Aug 12 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Southwestern Ottawa County in north central Kansas...
* Until 515 PM CDT.
* At 440 PM CDT, a severe thunderstorm was located over Tescott, and
is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters. At 439 PM CDT trained spotters
reported quarter size hail in Tescott.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Tescott.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3908 9793 3908 9778 3896 9778 3896 9793
TIME...MOT...LOC 2140Z 309DEG 0KT 3902 9788
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese2 follow-up statements
827
WWUS53 KTOP 122158
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
458 PM CDT Thu Aug 12 2021
KSC143-122215-
/O.CON.KTOP.SV.W.0125.000000T0000Z-210812T2215Z/
Ottawa-
458 PM CDT Thu Aug 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHWESTERN OTTAWA COUNTY...
At 458 PM CDT, a severe thunderstorm was located over Tescott, and is
nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Tescott.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3908 9793 3908 9778 3896 9778 3896 9793
TIME...MOT...LOC 2158Z 309DEG 0KT 3902 9788
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese728
WWUS53 KTOP 122212
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
512 PM CDT Thu Aug 12 2021
KSC143-122221-
/O.EXP.KTOP.SV.W.0125.000000T0000Z-210812T2215Z/
Ottawa-
512 PM CDT Thu Aug 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OTTAWA COUNTY
WILL EXPIRE AT 515 PM CDT...
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 will be allowed to expire. However small
hail, gusty winds, and heavy rain are still possible with this
thunderstorm.
LAT...LON 3908 9793 3908 9778 3896 9778 3896 9793
TIME...MOT...LOC 2211Z 309DEG 0KT 3902 9788
$$
ReeseThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 12:01 PM CDT | Special Weather Statement | TOP | Nemaha | 14 min |
| Aug 12, 12:41 PM CDT | Areal Flood Advisory | TOP | Brown, Nemaha | 2 hr |
| Aug 12, 1:53 PM CDT | Special Weather Statement | TOP | Jackson | 37 min |
| Aug 12, 2:14 PM CDT | Severe Thunderstorm Warning | TOP | Jackson | 11 min |
| Aug 12, 2:35 PM CDT | Areal Flood Advisory | TOP | Jackson, Nemaha, Pottawatomie | 70 min |
| Aug 12, 4:34 PM CDT | Special Weather Statement | TOP | Ottawa | 26 min |
| Aug 12, 4:50 PM CDT | Areal Flood Advisory | TOP | Ottawa | 3 hr |
| Aug 12, 5:02 PM CDT | Special Weather Statement | TOP | Douglas | 28 min |
| Aug 12, 5:14 PM CDT | Special Weather Statement | TOP | Ottawa | 31 min |
| Aug 12, 5:44 PM CDT | Special Weather Statement | TOP | Ottawa | 31 min |
| Aug 12, 6:54 PM CDT | Special Weather Statement | TOP | Douglas | 36 min |
| Aug 12, 6:59 PM CDT | Severe Thunderstorm Warning | TOP | Douglas, Shawnee | 31 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.