Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 19, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Aug 19, 2016, 4:24 PM CDT for Hancock County, Kossuth County, Winnebago County, Iowa. It was in force for 6 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
- Aug 19, 2016, 4:24 PM CDT (21:24 UTC)
- Expired
- Aug 19, 2016, 10:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hancock County, IA, Kossuth County, IA, Winnebago County, IA
The radar
The Des Moines radar (KDMX), 167 km from the middle of the area, began a volume at 21:24 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
Minneapolis, MN (KMPX), launched 12:00Z, 9.4 hours before the alert went out and 180 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
- 10 J/kg
- Mixed-layer CIN
- -274 J/kg
- Mixed-layer LCL
- 805 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -260 m²/s²
- 0-3 km storm-relative helicity
- -249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
747
WGUS53 KDMX 192124
FFWDMX
IAC081-109-189-200330-
/O.NEW.KDMX.FF.W.0019.160819T2124Z-160820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
424 PM CDT FRI AUG 19 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN HANCOCK COUNTY IN NORTH CENTRAL IOWA...
SOUTHEASTERN WINNEBAGO COUNTY IN NORTH CENTRAL IOWA...
EAST CENTRAL KOSSUTH COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 1030 PM CDT FRIDAY
* AT 423 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. AS MUCH AS 3 TO 4 INCHES OF
RAIN HAVE ALREADY FALLEN...WITH THE GREATEST AMOUNTS IN NORTHWEST
AND NORTH CENTRAL HANCOCK COUNTY. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FOREST CITY...BRITT...EAGLE LAKE...WESLEY...LELAND...CRYSTAL
LAKE...WODEN...MILLER...HAYFIELD...HUTCHINS...FOREST CITY MUNICIPAL
AIRPORT...PILOT KNOB STATE PARK AND EAGLE LAKE STATE PARK.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA THIS EVENING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4338 9362 4320 9350 4319 9350 4303 9399
4321 9409
$$
ZOGG2 follow-up statements
034
WGUS73 KDMX 192354
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
654 PM CDT FRI AUG 19 2016
IAC081-109-189-200330-
/O.CON.KDMX.FF.W.0019.000000T0000Z-160820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HANCOCK IA-WINNEBAGO IA-KOSSUTH IA-
654 PM CDT FRI AUG 19 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
NORTHERN HANCOCK...SOUTHEASTERN WINNEBAGO AND EAST CENTRAL KOSSUTH
COUNTIES...
AT 653 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. AS MUCH AS 4 TO 5 INCHES OF RAIN HAS FALLEN ACROSS THE
WARNED AREA...WITH THE HEAVIEST RAINFALL OCCURRING IN NORTHWESTERN
HANCOCK COUNTY. FLASH FLOODING IS EITHER UNDERWAY OR IS EXPECTED TO
BEGIN SHORTLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FOREST CITY...BRITT...EAGLE LAKE...WESLEY...LELAND...CRYSTAL LAKE...
WODEN...MILLER...HAYFIELD...HUTCHINS...FOREST CITY MUNICIPAL
AIRPORT...PILOT KNOB STATE PARK AND EAGLE LAKE STATE PARK.
ADDITIONAL RAINFALL AMOUNTS OF UP TO 1 INCH ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4338 9362 4320 9350 4319 9350 4303 9399
4321 9409
$$
ZOGG418
WGUS73 KDMX 200120
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
820 PM CDT FRI AUG 19 2016
IAC081-109-189-200129-
/O.CAN.KDMX.FF.W.0019.000000T0000Z-160820T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HANCOCK IA-WINNEBAGO IA-KOSSUTH IA-
820 PM CDT FRI AUG 19 2016
...THE FLASH FLOOD WARNING FOR NORTHERN HANCOCK...SOUTHEASTERN
WINNEBAGO AND EAST CENTRAL KOSSUTH COUNTIES IS CANCELLED...
HEAVY RAINFALL HAS ENDED ACROSS THE WARNED AREA...AND ANY FLASH
FLOODING THAT WAS OCCURRING HAS LIKELY ENDED. THUS FLOODING IS NO
LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.
LAT...LON 4338 9362 4320 9350 4319 9350 4303 9399
4321 9409
$$
ZOGGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:31 PM CDT | Special Weather Statement | DMX | Bremer | 44 min |
| Aug 19, 9:30 AM CDT | Special Weather Statement | DMX | Wright | 45 min |
| Aug 19, 9:59 AM CDT | Special Weather Statement | DMX | Hamilton | 46 min |
| Aug 19, 10:05 AM CDT | Special Weather Statement | DMX | Cerro Gordo | 40 min |
| Aug 19, 10:16 AM CDT | Special Weather Statement | DMX | Wright | 44 min |
| Aug 19, 10:57 AM CDT | Special Weather Statement | DMX | Franklin | 48 min |
| Aug 19, 11:41 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 49 min |
| Aug 19, 12:35 PM CDT | Special Weather Statement | DMX | Grundy | 40 min |
| Aug 19, 1:11 PM CDT | Special Weather Statement | DMX | Black Hawk, Bremer | 49 min |
| Aug 19, 3:08 PM CDT | Special Weather Statement | DMX | Wright | 37 min |
| Aug 19, 3:16 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Wright | 44 min |
| Aug 19, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Webster | 19 min |
| Aug 19, 5:49 PM CDT | Flash Flood Warning | DMX | Hamilton, Humboldt, Webster, Wright | 6 hr |
| Aug 19, 6:10 PM CDT | Special Weather Statement | DMX | Hamilton | 35 min |
| Aug 19, 6:49 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 41 min |
| Aug 19, 6:59 PM CDT | Special Weather Statement | DMX | Story | 46 min |
Nearby
Flash Flood Warnings in Iowa, 2016Every flash flood warning in 2016
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.