Alert archive / Kansas / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS Topeka, KS
NWS Topeka, KS issued this flash flood warning at Jul 15, 2021, 9:05 AM CDT for Clay County, Geary County, Riley County, Kansas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2021, 9:05 AM CDT (14:05 UTC)
- Expired
- Jul 15, 2021, 1:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clay County, KS, Geary County, KS, Riley County, KS
The radar
The Topeka radar (KTWX), 68 km from the middle of the area, began a volume at 14:08 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
Omaha, NE (KOAX), launched 12:00Z, 2.1 hours before the alert went out and 231 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
- 443 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.6
The text
As transmitted.
096
WGUS53 KTOP 151405
FFWTOP
KSC027-061-161-151815-
/O.NEW.KTOP.FF.W.0023.210715T1405Z-210715T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
905 AM CDT Thu Jul 15 2021
The National Weather Service in Topeka has issued a
* Flash Flood Warning for...
Northwestern Geary County in east central Kansas...
Southeastern Clay County in north central Kansas...
West Central Riley County in northeastern Kansas...
* Until 115 PM CDT.
* At 905 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 5 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Wakefield, Riley and Milford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3917 9725 3927 9709 3936 9696 3936 9694
3936 9669 3936 9668 3935 9668 3918 9675
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
595
WGUS73 KTOP 151806
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
106 PM CDT Thu Jul 15 2021
KSC027-061-161-151816-
/O.EXP.KTOP.FF.W.0023.000000T0000Z-210715T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay KS-Geary KS-Riley KS-
106 PM CDT Thu Jul 15 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 115 PM CDT THIS AFTERNOON FOR
NORTHWESTERN GEARY, SOUTHEASTERN CLAY AND WEST CENTRAL RILEY
COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 1000 PM CDT Thursday for
portions of central Kansas, east central Kansas, north central
Kansas and northeast Kansas.
LAT...LON 3917 9725 3927 9709 3936 9696 3936 9694
3936 9669 3936 9668 3935 9668 3918 9675
$$
TeefeyThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 12:20 AM CDT | Areal Flood Advisory | TOP | Clay, Cloud, Ottawa, Riley | 4 hr |
| Jul 15, 12:33 AM CDT | Flash Flood Warning | TOP | Clay, Cloud, Riley | 3 hr |
| Jul 15, 2:19 AM CDT | Flash Flood Warning | TOP | Clay, Dickinson, Geary, Pottawatomie, Riley | 4 hr |
| Jul 15, 3:27 AM CDT | Areal Flood Warning | TOP | Clay, Cloud, Riley | 6 hr |
| Jul 15, 3:31 AM CDT | Flash Flood Watch | TOP | Anderson, Clay, Coffey, Dickinson, Douglas, Franklin and 10 more | 16 hr |
| Jul 15, 3:46 AM CDT | Areal Flood Advisory | TOP | Dickinson, Geary, Morris, Wabaunsee | 4 hr |
| Jul 15, 6:08 AM CDT | Areal Flood Warning | TOP | Clay, Dickinson, Geary, Pottawatomie, Riley | 3 hr |
| Jul 15, 7:34 AM CDT | River Flood Warning | TOP | Riley | 15 hr |
| Jul 15, 9:53 AM CDT | Areal Flood Advisory | TOP | Pottawatomie, Riley | 3 hr |
| Jul 15, 3:28 PM CDT | Special Weather Statement | TOP | Republic | 32 min |
| Jul 15, 4:06 PM CDT | Special Weather Statement | TOP | Republic | 24 min |
| Jul 15, 4:48 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 27 min |
| Jul 15, 4:54 PM CDT | Special Weather Statement | TOP | Cloud | 36 min |
Nearby
Flash Flood Warnings in Kansas, 2021Every flash flood 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.