Alert archive / Kansas / Special Weather Statements in 2021
Special Weather Statement, NWS Topeka, KS
NWS Topeka, KS issued this special weather statement at Aug 8, 2021, 12:00 AM CDT for 6 counties in Kansas. It was in force for 30 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 8, 2021, 12:00 AM CDT (05:00 UTC)
- Expired
- Aug 8, 2021, 12:30 AM CDT
- In force
- 30 min
- Issued by
- NWS Topeka, KS
- Hail
- 0.25 in
- Wind
- 40
Counties Anderson County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Lyon County, KS, Osage County, KS
The radar
The Topeka radar (KTWX), 68 km from the middle of the area, began a volume at 05:00 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 00:00Z, 5.0 hours before the alert went out and 33 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.
272
WWUS83 KTOP 080500
SPSTOP
Special Weather Statement
National Weather Service Topeka KS
1200 AM CDT Sun Aug 8 2021
KSZ026-040-054>056-058-059-080530-
Coffey-Lyon-Jefferson-Douglas-Franklin-Osage-Anderson-
1200 AM CDT Sun Aug 8 2021
...Strong thunderstorms will impact portions of Franklin, eastern
Jefferson, Anderson, Douglas, Osage, Coffey and southern Lyon
Counties through 1230 AM CDT...
At 1159 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 3 miles southeast of Winchester to Lawrence to
11 miles west of Madison. Movement was east at 35 mph. The stronger
wind gusts are located with the outflow boundary about 10 to 15
miles ahead of the line of thunderstorms.
HAZARD...Winds of 40 to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Lawrence, Emporia, Ottawa, Baldwin City, Garnett, Osage City,
Burlington, Carbondale, Oskaloosa, Eudora, Wellsville, Overbrook,
Lyndon, Centropolis, Lebo, McLouth, Pomona, Scranton, Waverly and
Clinton.
This includes the following highways...
Interstate 35 between mile markers 128 and 198.
Kansas Turnpike between mile markers 116 and 135, and between mile
markers 194 and 205.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3817 9596 3817 9636 3837 9636 3887 9561
3887 9550 3894 9550 3902 9538 3942 9529
3942 9518 3897 9519 3895 9509 3899 9506
3898 9506 3804 9510 3804 9596
TIME...MOT...LOC 0459Z 277DEG 30KT 3929 9522 3894 9521 3816 9635
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
GarganThe 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, 9:49 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Lyon, Morris, Pottawatomie, Riley, Wabaunsee | 41 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, 2:27 PM CDT | Heat Advisory | TOP | Anderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more | 4 days |
Nearby
Special Weather Statements in Kansas, 2021Every special weather statement 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.