Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 23, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Aug 29, 2016, 12:44 PM CDT for Humboldt County, Kossuth County, Wright 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 29, 2016, 12:44 PM CDT (17:44 UTC)
- Expired
- Aug 29, 2016, 6:45 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Humboldt County, IA, Kossuth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 131 km from the middle of the area, began a volume at 17:47 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, 5.7 hours before the alert went out and 220 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
- 278 J/kg
- Mixed-layer CIN
- -225 J/kg
- Mixed-layer LCL
- 1423 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
008
WGUS53 KDMX 291744
FFWDMX
IAC091-109-197-292345-
/O.NEW.KDMX.FF.W.0023.160829T1744Z-160829T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1244 PM CDT MON AUG 29 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN KOSSUTH COUNTY IN NORTH CENTRAL IOWA...
HUMBOLDT COUNTY IN NORTH CENTRAL IOWA...
NORTHWESTERN WRIGHT COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 645 PM CDT MONDAY
* AT 1243 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN
HAS ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DAKOTA CITY...HUMBOLDT...EAGLE GROVE...GOLDFIELD...LIVERMORE...
CORWITH...LU VERNE...RENWICK...THOR...ST. JOSEPH...HARDY...
IRVINGTON...HUMBOLDT MUNICIPAL AIRPORT...FRANK A GOTCH STATE PARK
AND EAGLE GROVE MUNICIPAL AIRPORT.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4301 9398 4300 9397 4291 9397 4291 9391
4265 9374 4265 9427 4301 9425
$$
BEERENDS2 follow-up statements
584
WGUS73 KDMX 292102
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
402 PM CDT MON AUG 29 2016
IAC091-109-197-292345-
/O.CON.KDMX.FF.W.0023.000000T0000Z-160829T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KOSSUTH IA-HUMBOLDT IA-WRIGHT IA-
402 PM CDT MON AUG 29 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
SOUTHEASTERN KOSSUTH...HUMBOLDT AND NORTHWESTERN WRIGHT COUNTIES...
AT 400 PM CDT...ADDITIONAL THUNDERSTORMS ARE POSSIBLE THROUGH EARLY
EVENING...HOWEVER THE THUNDERSTORMS FROM EARLIER HAVE DIMINISHED.
VERY HEAVY RAIN HAS FALLEN ACROSS THE WARNED AREA WITH A TOTAL
AMOUNT OF 3 TO 4 INCHES IN SOME LOCATIONS. FLASH FLOODING IS
POSSIBLE DUE TO THE HEAVY RAINFALL FROM EARLIER THIS AFTERNOON.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DAKOTA CITY...HUMBOLDT...EAGLE GROVE...GOLDFIELD...LIVERMORE...
CORWITH...LU VERNE...RENWICK...THOR...ST. JOSEPH...HARDY...
IRVINGTON...HUMBOLDT MUNICIPAL AIRPORT...FRANK A GOTCH STATE PARK AND
EAGLE GROVE MUNICIPAL AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4301 9398 4300 9397 4291 9397 4291 9391
4265 9374 4265 9427 4301 9425
$$
BEERENDS935
WGUS73 KDMX 292257
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
557 PM CDT MON AUG 29 2016
IAC091-109-197-292307-
/O.CAN.KDMX.FF.W.0023.000000T0000Z-160829T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KOSSUTH IA-HUMBOLDT IA-WRIGHT IA-
557 PM CDT MON AUG 29 2016
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN KOSSUTH...HUMBOLDT AND
NORTHWESTERN WRIGHT COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4301 9398 4300 9397 4291 9397 4291 9391
4265 9374 4265 9427 4301 9425
$$
BEERENDSThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 11:53 AM CDT | Special Weather Statement | DMX | Cerro Gordo, Hancock, Humboldt, Kossuth, Winnebago, Worth and 1 more | 52 min |
| Aug 29, 3:09 PM CDT | Special Weather Statement | DMX | Hardin | 51 min |
| Aug 29, 3:44 PM CDT | Special Weather Statement | DMX | Grundy | 61 min |
| Aug 29, 3:59 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 46 min |
| Aug 29, 4:05 PM CDT | Special Weather Statement | DMX | Polk | 40 min |
| Aug 29, 4:56 PM CDT | Special Weather Statement | DMX | Tama | 34 min |
| Aug 29, 4:59 PM CDT | Special Weather Statement | DMX | Tama | 31 min |
| Aug 29, 5:08 PM CDT | Special Weather Statement | DMX | Boone, Dallas, Guthrie, Story | 52 min |
| Aug 29, 5:25 PM CDT | Flash Flood Warning | DMX | Boone, Story | 6 hr |
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.