Alert archive / Kansas / Flash Flood Watches in 2021
Flash Flood Watch 7, NWS Topeka, KS
NWS Topeka, KS issued this flash flood watch at Jul 15, 2021, 3:31 AM CDT for 16 counties in Kansas. It took effect at Jul 15, 2021, 4:00 AM CDT. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Jul 15, 2021, 3:31 AM CDT (08:31 UTC)
- In effect from
- Jul 15, 2021, 4:00 AM CDT
- Expired
- Jul 15, 2021, 7:47 PM CDT
- In force
- 16 hr
- Issued by
- NWS Topeka, KS
- Flood severity
- None
Counties Anderson County, KS, Clay County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Lyon County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS
The radar
The Topeka radar (KTWX), 17 km from the middle of the area, began a volume at 08:30 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, 8.5 hours before the alert went out and 41 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
- 476 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1856 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted.
839 WGUS63 KTOP 150831 FFATOP URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Topeka KS 331 AM CDT Thu Jul 15 2021 KSZ021>024-026-035>040-054>056-058-059-152100- /O.NEW.KTOP.FF.A.0007.210715T0900Z-210716T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Riley-Pottawatomie-Jackson-Jefferson-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- Including the cities of Perry, Grantville, Overbrook, Abilene, Maple Hill, Oskaloosa, Holton, Eskridge, Alta Vista, Burlington, Meriden, Wamego, Carbondale, Emporia, Osage City, Manhattan, Herington, St. Marys, Nortonville, Council Grove, Burlingame, Lyndon, Valley Falls, McFarland, McLouth, Junction City, Alma, Lebo, Harveyville, Topeka, Ottawa, Paxico, Lawrence, Clay Center, and Garnett 331 AM CDT Thu Jul 15 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... The National Weather Service in Topeka has issued a * Flash Flood Watch for portions of central Kansas, east central Kansas, north central Kansas and northeast Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee and Wabaunsee. In north central Kansas, Clay. In northeast Kansas, Jackson, Jefferson, Pottawatomie and Riley. * Through this evening. * Thunderstorms with very heavy rainfall are likely today. These storms may tend to move slowly over the same areas producing several inches of rainfall in a short period of time. This could lead to flash flooding. * Creeks and streams could see very fast rises. Areas that are prone to flooding like city intersections and low water crossings could become flooded very quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
2 follow-up statements
087 WGUS63 KTOP 152020 FFATOP Flood Watch National Weather Service Topeka KS 320 PM CDT Thu Jul 15 2021 KSZ021>024-026-035>040-054>056-058-059-160300- /O.CON.KTOP.FF.A.0007.000000T0000Z-210716T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Riley-Pottawatomie-Jackson-Jefferson-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- Including the cities of Perry, Grantville, Overbrook, Abilene, Maple Hill, Oskaloosa, Holton, Eskridge, Alta Vista, Burlington, Meriden, Wamego, Carbondale, Emporia, Osage City, Manhattan, Herington, St. Marys, Nortonville, Council Grove, Burlingame, Lyndon, Valley Falls, McFarland, McLouth, Junction City, Alma, Lebo, Harveyville, Topeka, Ottawa, Paxico, Lawrence, Clay Center, and Garnett 320 PM CDT Thu Jul 15 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... The Flash Flood Watch continues for * Portions of central Kansas, east central Kansas, north central Kansas and northeast Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee and Wabaunsee. In north central Kansas, Clay. In northeast Kansas, Jackson, Jefferson, Pottawatomie and Riley. * Until 10 PM CDT this evening. * Showers and thunderstorms will continue for much of the area this evening, some of which may produce high rainfall rates. Additional rain may fall on ground left saturated from heavy rain earlier today. Flash flooding may result from this precipitation. * Creeks and streams could see very fast rises. Areas that are prone to flooding like city intersections and low water crossings could become flooded very quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
262 WGUS63 KTOP 160047 FFATOP Flood Watch National Weather Service Topeka KS 747 PM CDT Thu Jul 15 2021 KSZ021>024-026-035>040-054>056-058-059-160200- /O.CAN.KTOP.FF.A.0007.000000T0000Z-210716T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Riley-Pottawatomie-Jackson-Jefferson-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- Including the cities of Perry, Grantville, Overbrook, Abilene, Maple Hill, Oskaloosa, Holton, Eskridge, Alta Vista, Burlington, Meriden, Wamego, Carbondale, Emporia, Osage City, Manhattan, Herington, St. Marys, Nortonville, Council Grove, Burlingame, Lyndon, Valley Falls, McFarland, McLouth, Junction City, Alma, Lebo, Harveyville, Topeka, Ottawa, Paxico, Lawrence, Clay Center, and Garnett 747 PM CDT Thu Jul 15 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of central Kansas, east central Kansas, north central Kansas and northeast Kansas, including the following areas, in central Kansas, Dickinson. In east central Kansas, Anderson, Coffey, Douglas, Franklin, Geary, Lyon, Morris, Osage, Shawnee and Wabaunsee. In north central Kansas, Clay. In northeast Kansas, Jackson, Jefferson, Pottawatomie and Riley has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ BD
The 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, 3:46 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, 9:05 AM CDT | Flash Flood Warning | TOP | Clay, Geary, Riley | 4 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 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.