Alert archive / Kansas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 126, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Aug 12, 2021, 6:59 PM CDT for Douglas County, Shawnee County, Kansas. It was in force for 31 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
- Aug 12, 2021, 6:59 PM CDT (23:59 UTC)
- Expired
- Aug 12, 2021, 7:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Douglas County, KS, Shawnee County, KS
The radar
The Topeka radar (KTWX), 67 km from the middle of the area, began a volume at 00:02 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 |
|---|---|---|---|
| Aug 12, 7:14 PM CDT | HAIL 1 | 5 Ene Berryton, KS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 12.0 hours before the alert went out and 16 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.
546
WUUS53 KTOP 122359
SVRTOP
KSC045-177-130030-
/O.NEW.KTOP.SV.W.0126.210812T2359Z-210813T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Topeka KS
659 PM CDT Thu Aug 12 2021
The National Weather Service in Topeka has issued a
* Severe Thunderstorm Warning for...
Southeastern Shawnee County in east central Kansas...
Northwestern Douglas County in east central Kansas...
* Until 730 PM CDT.
* At 658 PM CDT, a severe thunderstorm was located 4 miles north of
Richland, moving east at 15 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...
Southwestern Lawrence, Lecompton, Clinton and Clinton Lake.
This includes Kansas Turnpike between mile markers 188 and 198.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3889 9561 3899 9563 3905 9539 3903 9535
3903 9532 3889 9531
TIME...MOT...LOC 2358Z 258DEG 15KT 3895 9553
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese2 follow-up statements
770
WWUS53 KTOP 130017
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
717 PM CDT Thu Aug 12 2021
KSC045-177-130030-
/O.CON.KTOP.SV.W.0126.000000T0000Z-210813T0030Z/
Shawnee-Douglas-
717 PM CDT Thu Aug 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHEASTERN SHAWNEE AND NORTHWESTERN DOUGLAS COUNTIES...
At 715 PM CDT, a severe thunderstorm was located 5 miles north of
Richland, moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters. At 714 PM CDT a trained spotter
reported quarter size hail 5 miles east northeast of
Berryton.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Southwestern Lawrence, Lecompton, Clinton and Clinton Lake.
This includes Kansas Turnpike between mile markers 188 and 198.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3889 9561 3899 9563 3905 9539 3903 9535
3903 9532 3889 9531
TIME...MOT...LOC 0015Z 256DEG 7KT 3896 9553
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Reese012
WWUS53 KTOP 130028
SVSTOP
Severe Weather Statement
National Weather Service Topeka KS
728 PM CDT Thu Aug 12 2021
KSC045-177-130036-
/O.EXP.KTOP.SV.W.0126.000000T0000Z-210813T0030Z/
Shawnee-Douglas-
728 PM CDT Thu Aug 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SHAWNEE AND
NORTHWESTERN DOUGLAS COUNTIES WILL EXPIRE AT 730 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
and gusty winds are still possible with this thunderstorm.
LAT...LON 3889 9561 3899 9563 3905 9539 3903 9535
3903 9532 3889 9531
TIME...MOT...LOC 0026Z 258DEG 15KT 3897 9548
$$
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, 4:41 PM CDT | Severe Thunderstorm Warning | TOP | Ottawa | 34 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 |
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.