Alert archive / Iowa / Flash Flood Warnings in 2021
Flash Flood Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 24, 2021, 9:21 PM CDT for 4 counties in Iowa. It was in force for 5 hr. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 24, 2021, 9:21 PM CDT (02:21 UTC)
- Expired
- Jun 25, 2021, 2:15 AM CDT
- In force
- 5 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Appanoose County, IA, Lucas County, IA, Monroe County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 98 km from the middle of the area, began a volume at 02:22 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 9:59 PM CDT | FLASH FLOOD | 2 E Chariton, IA | 482ND STREET HAS WATER RUNNING OVER IT, AND IS IN THE PROCESS OF BEING CLOSED AND BARRICADED. |
| Jun 24, 10:59 PM CDT | HEAVY RAIN 5 | Albia, IA | EVENT TOTAL THUS FAR. |
| Jun 24, 11:01 PM CDT | HEAVY RAIN 5 | Albia, IA | EVENT TOTAL THUS FAR. |
| Jun 24, 11:01 PM CDT | HEAVY RAIN 5.2 | Albia, IA | 24 HOUR RAINFALL TOTAL FROM PERSONAL WEATHER STATION. |
| Jun 24, 11:03 PM CDT | HEAVY RAIN 3.02 | Chariton, IA | 24 HOUR TOTAL FROM PERSONAL WEATHER STATION. |
| Jun 25, 12:02 AM CDT | HEAVY RAIN 4.17 | Mystic, IA | 24 HOUR PRECIP TOTAL ENDING AT 12 MIDNIGHT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.4 hours before the alert went out and 237 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
- 112 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
498
WGUS53 KDMX 250221
FFWDMX
IAC007-117-135-185-250815-
/O.NEW.KDMX.FF.W.0002.210625T0221Z-210625T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Des Moines IA
921 PM CDT Thu Jun 24 2021
The National Weather Service in Des Moines has issued a
* Flash Flood Warning for...
Northern Appanoose County in south central Iowa...
Lucas County in south central Iowa...
Monroe County in south central Iowa...
Northern Wayne County in south central Iowa...
* Until 315 AM CDT.
* At 921 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. The expected rainfall rate is 2
to 3 inches in 1 hour. Highways 5 and 147 in Albia are closed due
to flooding. Flash flooding is ongoing or expected to begin
shortly elsewhere in the warned area.
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...
Centerville, Chariton, Albia, Corydon, Rathbun Lake, Lake Sundown,
Moravia, Russell, Humeston, Mystic, Lucas, Derby, Melrose, Promise
City, Unionville, Rathbun, Plano, Udell, Millerton and Honey Creek
State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4108 9356 4107 9264 4075 9264 4075 9356
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
Zogg2 follow-up statements
939
WGUS73 KDMX 250301
FFSDMX
Flash Flood Statement
National Weather Service Des Moines IA
1001 PM CDT Thu Jun 24 2021
IAC007-117-135-185-250815-
/O.CON.KDMX.FF.W.0002.000000T0000Z-210625T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Appanoose IA-Lucas IA-Monroe IA-Wayne IA-
1001 PM CDT Thu Jun 24 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FRIDAY FOR
NORTHERN APPANOOSE, LUCAS, MONROE AND NORTHERN WAYNE COUNTIES...
At 1001 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. The Lucas County Sheriffs
Department reports that 482nd Street is closed due to water flowing
over it 2 miles east of Chariton. Flash flooding is ongoing or
expected to begin shortly elsewhere in the warned area.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Centerville, Chariton, Albia, Corydon, Rathbun Lake, Lake Sundown,
Moravia, Russell, Humeston, Mystic, Lucas, Derby, Melrose, Promise
City, Unionville, Rathbun, Plano, Udell, Millerton and Honey Creek
State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4108 9356 4107 9264 4075 9264 4075 9356
FLASH FLOOD...RADAR INDICATED
$$
Zogg576 WGUS73 KDMX 250715 FFSDMX Flash Flood Statement National Weather Service Des Moines IA 215 AM CDT Fri Jun 25 2021 IAC007-117-135-185-250725- /O.CAN.KDMX.FF.W.0002.000000T0000Z-210625T0815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Appanoose IA-Lucas IA-Monroe IA-Wayne IA- 215 AM CDT Fri Jun 25 2021 ...FLASH FLOOD WARNING FOR NORTHERN APPANOOSE, LUCAS, MONROE AND NORTHERN WAYNE COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING... LAT...LON 4108 9356 4107 9264 4075 9264 4075 9356 $$ Curtis
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 42 min |
| Jun 24, 8:15 PM CDT | Flash Flood Warning | DMX | Davis, Wapello | 6 hr |
| Jun 24, 11:20 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 25 min |
| Jun 25, 2:08 AM CDT | Areal Flood Warning | DMX | Davis, Wapello | 12 hr |
| Jun 25, 2:15 AM CDT | Areal Flood Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 12 hr |
| Jun 25, 2:24 PM CDT | Flash Flood Watch | DMX | Appanoose, Davis, Decatur, Lucas, Monroe, Ringgold and 3 more | 17 hr |
Nearby
Flash Flood Warnings in Iowa, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.