Alert archive / Kansas / Flash Flood Watches in 2021
Flash Flood Watch 8, NWS Topeka, KS
NWS Topeka, KS issued this flash flood watch at Sep 3, 2021, 3:34 AM CDT for 11 counties in Kansas. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Sep 3, 2021, 3:34 AM CDT (08:34 UTC)
- Expired
- Sep 4, 2021, 1:00 PM CDT
- In force
- 33 hr
- Issued by
- NWS Topeka, KS
- Flood severity
- None
Counties Anderson County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Lyon County, KS, Morris County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS
The radar
The Topeka radar (KTWX), 40 km from the middle of the area, began a volume at 08:36 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, 8.6 hours before the alert went out and 47 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
- 155 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1035 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted.
969 WGUS63 KTOP 030834 FFATOP URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Topeka KS 334 AM CDT Fri Sep 3 2021 KSZ035>040-054>056-058-059-032100- /O.NEW.KTOP.FF.A.0008.210903T0834Z-210904T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Dickinson-Geary-Morris-Wabaunsee-Shawnee-Douglas-Lyon-Osage- Franklin-Coffey-Anderson- Including the cities of Abilene, Herington, Junction City, Council Grove, Alma, Eskridge, Maple Hill, Alta Vista, McFarland, Harveyville, Paxico, Topeka, Lawrence, Emporia, Osage City, Carbondale, Lyndon, Burlingame, Overbrook, Ottawa, Burlington, Lebo, and Garnett 334 AM CDT Fri Sep 3 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY AFTERNOON... The National Weather Service in Topeka has issued a * Flash Flood Watch for portions of central Kansas and east central Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee, and Wabaunsee. * Through Saturday afternoon * Thunderstorms will continue across the area through the morning hours today. Up to five inches of rain has already fallen across areas near and just south of Interstate 70. * Thunderstorms are also expected tonight with several inches of additional rainfall possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Baerg
3 follow-up statements
924 WGUS63 KTOP 032015 FFATOP Flood Watch National Weather Service Topeka KS 315 PM CDT Fri Sep 3 2021 KSZ035>040-054>056-058-059-041000- /O.CON.KTOP.FF.A.0008.000000T0000Z-210904T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Dickinson-Geary-Morris-Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin- Coffey-Anderson- Including the cities of Emporia, Abilene, Maple Hill, Eskridge, Alta Vista, Burlington, Overbrook, Carbondale, Osage City, Herington, Lawrence, Burlingame, Lyndon, McFarland, Junction City, Alma, Lebo, Harveyville, Topeka, Ottawa, Paxico, Council Grove, and Garnett 315 PM CDT Fri Sep 3 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY AFTERNOON... The Flash Flood Watch continues for * Portions of central Kansas and east central Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee and Wabaunsee. * Through Saturday afternoon. * Another round of thunderstorms is expected across the area overnight tonight into Saturday morning. An additional 1 to 3 inches of rain with locally higher amounts are possible. * This area has already received upwards of 4 to 5 inches of rain through early this morning. It will take very little additional rainfall to cause flooding on saturated grounds. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CP
096 WGUS63 KTOP 040810 FFATOP Flood Watch National Weather Service Topeka KS 310 AM CDT Sat Sep 4 2021 KSZ035>040-054>056-058-059-041800- /O.CON.KTOP.FF.A.0008.000000T0000Z-210904T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Dickinson-Geary-Morris-Wabaunsee-Shawnee-Douglas-Lyon-Osage- Franklin-Coffey-Anderson- Including the cities of Abilene, Herington, Junction City, Council Grove, Alma, Eskridge, Maple Hill, Alta Vista, McFarland, Harveyville, Paxico, Topeka, Lawrence, Emporia, Osage City, Carbondale, Lyndon, Burlingame, Overbrook, Ottawa, Burlington, Lebo, and Garnett 310 AM CDT Sat Sep 4 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... The Flash Flood Watch continues for * Portions of central Kansas and east central Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee, and Wabaunsee. * Until 1 PM CDT this afternoon * Thunderstorms will continue through the morning hours today. An additional 2 to 4 inches of rain with locally higher amounts are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
401 WGUS63 KTOP 041745 FFATOP Flood Watch National Weather Service Topeka KS 1245 PM CDT Sat Sep 4 2021 KSZ035>040-054>056-058-059-041845- /O.EXP.KTOP.FF.A.0008.000000T0000Z-210904T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Dickinson-Geary-Morris-Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin- Coffey-Anderson- Including the cities of Emporia, Abilene, Maple Hill, Eskridge, Alta Vista, Burlington, Overbrook, Carbondale, Osage City, Herington, Lawrence, Burlingame, Lyndon, McFarland, Junction City, Alma, Lebo, Harveyville, Topeka, Ottawa, Paxico, Council Grove, and Garnett 1245 PM CDT Sat Sep 4 2021 ...FLASH FLOOD WATCH WILL EXPIRE AT 1 PM CDT THIS AFTERNOON... The Flash Flood Watch for portions of central Kansas and east central Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee and Wabaunsee will expire at 1 PM CDT this afternoon. Flooding is no longer expected to pose a threat. $$
The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 7:18 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Morris, Wabaunsee | 27 min |
| Sep 2, 7:44 PM CDT | Severe Thunderstorm Warning | TOP | Lyon, Morris, Wabaunsee | 31 min |
| Sep 2, 8:16 PM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 2, 8:41 PM CDT | Special Weather Statement | TOP | Marshall | 34 min |
| Sep 2, 8:41 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:11 PM CDT | Severe Thunderstorm Warning | TOP | Lyon | 34 min |
| Sep 2, 9:19 PM CDT | Special Weather Statement | TOP | Geary | 26 min |
| Sep 2, 9:43 PM CDT | Special Weather Statement | TOP | Morris | 32 min |
| Sep 3, 12:01 AM CDT | Special Weather Statement | TOP | Lyon | 29 min |
| Sep 3, 12:09 AM CDT | River Flood Warning | TOP | Marshall | 10 hr |
| Sep 3, 12:17 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage | 7 hr |
| Sep 3, 12:31 AM CDT | Special Weather Statement | TOP | Osage | 29 min |
| Sep 3, 12:57 AM CDT | Special Weather Statement | TOP | Osage | 33 min |
| Sep 3, 1:29 AM CDT | Special Weather Statement | TOP | Shawnee | 46 min |
| Sep 3, 1:41 AM CDT | Areal Flood Advisory | TOP | Lyon, Osage, Shawnee, Wabaunsee | 6 hr |
| Sep 3, 4:34 AM CDT | Areal Flood Advisory | TOP | Geary, Riley | 3 hr |
| Sep 3, 5:21 AM CDT | Flash Flood Warning | TOP | Douglas | 3 hr |
Nearby
Flash Flood Watches in Kansas, 2021Every flash flood watch 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.