Alert archive / Iowa / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood watch at Jul 9, 2021, 3:12 AM CDT for 10 counties in Iowa. It took effect at Jul 9, 2021, 4:00 PM CDT. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Jul 9, 2021, 3:12 AM CDT (08:12 UTC)
- In effect from
- Jul 9, 2021, 4:00 PM CDT
- Expired
- Jul 10, 2021, 8:57 AM CDT
- In force
- 17 hr
- Issued by
- NWS Des Moines, IA
- Flood severity
- None
Counties Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Lucas County, IA, Madison County, IA, Monroe County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 93 km from the middle of the area, began a volume at 08:12 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
Davenport, (KDVN), launched 00:00Z, 8.2 hours before the alert went out and 240 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1024 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
815 WGUS63 KDMX 090812 FFADMX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Des Moines IA 312 AM CDT Fri Jul 9 2021 .Several rounds of thunderstorms capable of locally heavy rainfall are expected from late today through tonight. This may cause flash flooding in some areas. IAZ085-086-095>097-091615- /O.CAN.KDMX.FA.A.0001.210709T2100Z-210710T1500Z/ /O.NEW.KDMX.FF.A.0003.210709T2100Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Bloomfield, Seymour, Albia, Humeston, Corydon, Centerville, Ottumwa, and Allerton 312 AM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY MORNING... ...FLOOD WATCH IS CANCELLED... The National Weather Service in Des Moines has issued a * Flash Flood Watch for portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Monroe and Wayne. In southeast Iowa, Davis and Wapello. * From this afternoon through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && The Flood Watch for portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Monroe and Wayne. In southeast Iowa, Davis and Wapello has been replaced by a Flash Flood Watch. $$ Lee
6 follow-up statements
465 WGUS63 KDMX 090955 FFADMX Flood Watch National Weather Service Des Moines IA 455 AM CDT Fri Jul 9 2021 .Several rounds of thunderstorms capable of locally heavy rainfall are expected from late today through tonight. This may cause flash flooding in some areas. IAZ085-086-095>097-091800- /O.CON.KDMX.FF.A.0003.210709T2100Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Bloomfield, Seymour, Albia, Humeston, Corydon, Centerville, Ottumwa, and Allerton 455 AM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH SATURDAY MORNING... The Flash Flood Watch continues for * Portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Monroe and Wayne. In southeast Iowa, Davis and Wapello. * From 4 PM CDT this afternoon through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Lee
384 WGUS63 KDMX 091519 FFADMX Flood Watch National Weather Service Des Moines IA 1019 AM CDT Fri Jul 9 2021 IAZ085-086-095>097-092330- /O.CON.KDMX.FF.A.0003.210709T2100Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Bloomfield, Seymour, Albia, Humeston, Corydon, Centerville, Ottumwa, and Allerton 1019 AM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH SATURDAY MORNING... The Flash Flood Watch continues for * Portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Monroe and Wayne. In southeast Iowa, Davis and Wapello. * From 4 PM CDT this afternoon through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Hagenhoff
957 WGUS63 KDMX 092100 FFADMX Flood Watch National Weather Service Des Moines IA 400 PM CDT Fri Jul 9 2021 IAZ085-086-095>097-100500- /O.CON.KDMX.FF.A.0003.000000T0000Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Bloomfield, Seymour, Albia, Humeston, Corydon, Centerville, Ottumwa, and Allerton 400 PM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING... The Flash Flood Watch continues for * Portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Monroe and Wayne. In southeast Iowa, Davis and Wapello. * Through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Hagenhoff
838 WGUS63 KDMX 100128 FFADMX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Des Moines IA 828 PM CDT Fri Jul 9 2021 IAZ072-073-083-084-094-100930- /O.EXA.KDMX.FF.A.0003.000000T0000Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Madison-Warren-Clarke-Lucas-Decatur- Including the cities of Norwalk, Winterset, Chariton, Earlham, Leon, Osceola, Lamoni, Indianola, and Carlisle 828 PM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING... The National Weather Service in Des Moines has expanded the * Flash Flood Watch to include a portion of south central Iowa, including the following counties, Clarke, Decatur, Lucas, Madison and Warren. * Through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ IAZ085-086-095>097-100930- /O.CON.KDMX.FF.A.0003.000000T0000Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Bloomfield, Seymour, Albia, Humeston, Corydon, Centerville, Ottumwa, and Allerton 828 PM CDT Fri Jul 9 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING... The Flash Flood Watch continues for * Flash Flood Watch to include portions of south central and southeast Iowa, including the following counties, Appanoose, Monroe, Wayne, Davis, and Wapello. * Through Saturday morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Hahn
250 WGUS63 KDMX 100736 FFADMX Flood Watch National Weather Service Des Moines IA 236 AM CDT Sat Jul 10 2021 IAZ072-073-083>086-094>097-101500- /O.CON.KDMX.FF.A.0003.000000T0000Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Madison-Warren-Clarke-Lucas-Monroe-Wapello-Decatur-Wayne-Appanoose- Davis- Including the cities of Norwalk, Humeston, Bloomfield, Seymour, Albia, Winterset, Allerton, Chariton, Earlham, Leon, Osceola, Lamoni, Centerville, Corydon, Indianola, Ottumwa, and Carlisle 236 AM CDT Sat Jul 10 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... The Flash Flood Watch continues for * Portions of south central Iowa and southeast Iowa, including the following areas, in south central Iowa, Appanoose, Clarke, Decatur, Lucas, Madison, Monroe, Warren and Wayne. In southeast Iowa, Davis and Wapello. * Until 10 AM CDT this morning. * Excessive rainfall may lead to flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Lee
508 WGUS63 KDMX 101357 FFADMX Flood Watch National Weather Service Des Moines IA 857 AM CDT Sat Jul 10 2021 IAZ072-073-083>086-094>097-101500- /O.CAN.KDMX.FF.A.0003.000000T0000Z-210710T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Madison-Warren-Clarke-Lucas-Monroe-Wapello-Decatur-Wayne-Appanoose- Davis- Including the cities of Norwalk, Humeston, Bloomfield, Seymour, Albia, Winterset, Allerton, Chariton, Earlham, Leon, Osceola, Lamoni, Centerville, Corydon, Indianola, Ottumwa, and Carlisle 857 AM CDT Sat Jul 10 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of south central Iowa and southeast Iowa has been cancelled. The Flash Flood Watch is cancelled. Flooding is no longer expected to pose a threat. $$ Zogg
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 2:59 AM CDT | Flood Watch | DMX | Appanoose, Davis, Monroe, Wapello, Wayne | 13 min |
| Jul 9, 8:09 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 28 min |
| Jul 9, 9:24 AM CDT | Special Weather Statement | DMX | Wayne | 21 min |
| Jul 9, 12:04 PM CDT | Special Weather Statement | DMX | Webster | 26 min |
| Jul 9, 12:28 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Webster | 47 min |
| Jul 9, 1:01 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Polk, Story | 44 min |
| Jul 9, 1:27 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Madison, Polk, Story | 63 min |
| Jul 9, 2:06 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Madison, Marion, Polk, Warren | 54 min |
Nearby
Flash Flood Watches in Iowa, 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.