Alert archive / Kansas / Special Weather Statements in 2020
Special Weather Statement, NWS Topeka, KS
NWS Topeka, KS issued this special weather statement at Aug 9, 2020, 4:44 AM CDT for Clay County, Kansas. It was in force for 46 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 9, 2020, 4:44 AM CDT (09:44 UTC)
- Expired
- Aug 9, 2020, 5:30 AM CDT
- In force
- 46 min
- Issued by
- NWS Topeka, KS
County Clay County, KS
The radar
The Topeka radar (KTWX), 69 km from the middle of the area, began a volume at 09:48 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, 9.7 hours before the alert went out and 118 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
- 3919 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1371 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 15.2
The text
As transmitted.
282 WWUS83 KTOP 090944 SPSTOP Special Weather Statement National Weather Service Topeka KS 444 AM CDT Sun Aug 9 2020 KSZ021-022-035-036-091030- Geary-Clay-Dickinson-Riley- 444 AM CDT Sun Aug 9 2020 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL DICKINSON... NORTHWESTERN GEARY...WEST CENTRAL RILEY AND SOUTHEASTERN CLAY COUNTIES UNTIL 530 AM CDT... At 444 AM CDT, Doppler radar was tracking a strong thunderstorm 8 miles southwest of Wakefield, moving northeast at 25 mph. Penny size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Wakefield, Milford and Milford Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3932 9690 3917 9682 3908 9711 3916 9717 TIME...MOT...LOC 0944Z 240DEG 20KT 3913 9713 $$
The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:17 AM CDT | Special Weather Statement | TOP | Clay | 43 min |
| Aug 9, 3:18 AM CDT | Heat Advisory | TOP | Anderson, Brown, Clay, Coffey, Dickinson, Douglas and 15 more | 17 hr |
| Aug 9, 4:04 AM CDT | Special Weather Statement | TOP | Dickinson | 41 min |
| Aug 9, 6:35 AM CDT | Special Weather Statement | TOP | Morris | 40 min |
| Aug 9, 6:51 AM CDT | Special Weather Statement | TOP | Morris | 24 min |
| Aug 9, 7:40 AM CDT | Special Weather Statement | TOP | Douglas | 20 min |
| Aug 9, 7:45 AM CDT | Special Weather Statement | TOP | Douglas | 30 min |
| Aug 9, 5:29 PM CDT | Special Weather Statement | TOP | Anderson, Coffey, Lyon | 46 min |
| Aug 9, 6:40 PM CDT | Special Weather Statement | TOP | Coffey | 20 min |
| Aug 9, 6:45 PM CDT | Severe Thunderstorm Warning | TOP | Coffey | 45 min |
Nearby
Special Weather Statements in Kansas, 2020Every special weather statement in 2020
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.