Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 37, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Sep 23, 2016, 3:36 AM CDT for 4 counties in Iowa. It was in force for 6 hr. 3 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
- Sep 23, 2016, 3:36 AM CDT (08:36 UTC)
- Expired
- Sep 23, 2016, 9:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Franklin County, IA, Humboldt County, IA, Kossuth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 113 km from the middle of the area, began a volume at 08:37 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 |
|---|---|---|---|
| Sep 23, 4:00 AM CDT | FLASH FLOOD | Goldfield, IA | WATER REPORTED FLOWING OVER THE ROAD NEAR RIVER PARK IN GOLDFIELD. |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 2.6 | 2 Wnw Clarion, IA | CLARION AWOS MEASURED 2.60 INCHES OF RAIN IN PAST 24 HOURS. |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 3.82 | Clarion, IA | CO-OP OBSERVER REPORTED 3.82 INCHES OF RAIN IN PAST 24 HOURS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.6 hours before the alert went out and 234 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
- 579 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
147
WGUS53 KDMX 230836
FFWDMX
IAC069-091-109-197-231430-
/O.NEW.KDMX.FF.W.0037.160923T0836Z-160923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
336 AM CDT FRI SEP 23 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN KOSSUTH COUNTY IN NORTH CENTRAL IOWA...
HUMBOLDT COUNTY IN NORTH CENTRAL IOWA...
SOUTHERN WRIGHT COUNTY IN NORTH CENTRAL IOWA...
SOUTHERN FRANKLIN COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 930 AM CDT.
* AT 334 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CLARION...DAKOTA CITY...HUMBOLDT...EAGLE GROVE...ACKLEY...ELM
LAKE...BIG WALL LAKE...WEST BEND...GOLDFIELD...DOWS...GILMORE
CITY...LIVERMORE...BODE...LU VERNE...RENWICK...THOR...WOOLSTOCK...
ROWAN...RUTLAND AND BRADFORD.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 152 AND 158.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4296 9397 4282 9396 4273 9348 4265 9348
4264 9302 4256 9303 4257 9396 4264 9397
4265 9444 4305 9444
$$
SKOW2 follow-up statements
327
WGUS73 KDMX 231148
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
648 AM CDT FRI SEP 23 2016
IAC069-091-109-197-231430-
/O.CON.KDMX.FF.W.0037.000000T0000Z-160923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KOSSUTH IA-HUMBOLDT IA-WRIGHT IA-FRANKLIN IA-
648 AM CDT FRI SEP 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
SOUTHERN KOSSUTH...HUMBOLDT...SOUTHERN WRIGHT AND SOUTHERN FRANKLIN
COUNTIES...
AT 643 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING RAIN
ACROSS THE WARNED AREA. UP TO SIX INCHES OF RAIN HAVE ALREADY
FALLEN. NUMEROUS REPORTS OF SECONDARY AND GRAVEL ROADS ACROSS
SOUTHERN WRIGHT AND SOUTHERN FRANKLIN COUNTIES HAS BEEN REPORTED.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CLARION...DAKOTA CITY...HUMBOLDT...EAGLE GROVE...ACKLEY...ELM LAKE...
BIG WALL LAKE...WEST BEND...GOLDFIELD...DOWS...GILMORE CITY...
LIVERMORE...BODE...LU VERNE...RENWICK...THOR...WOOLSTOCK...ROWAN...
RUTLAND AND BRADFORD.
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 152 AND 158.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4296 9397 4282 9396 4273 9348 4265 9348
4264 9302 4256 9303 4257 9396 4264 9397
4265 9444 4305 9444
$$
COGIL148
WGUS73 KDMX 231428
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
928 AM CDT FRI SEP 23 2016
IAC069-091-109-197-231434-
/O.EXP.KDMX.FF.W.0037.000000T0000Z-160923T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KOSSUTH IA-HUMBOLDT IA-WRIGHT IA-FRANKLIN IA-
928 AM CDT FRI SEP 23 2016
...THE FLASH FLOOD WARNING FOR SOUTHERN KOSSUTH...HUMBOLDT...SOUTHERN
WRIGHT AND SOUTHERN FRANKLIN COUNTIES WILL EXPIRE AT 930 AM CDT...
RADAR ESTIMATES INDICATE THAT 2 TO 5 INCHES OF RAIN FELL OVERNIGHT.
HOWEVER, THE HEAVY RAIN HAS NOW ENDED AND THE THREAT FOR FLASH
FLOODING HAS DIMINISHED. HOWEVER, RESIDUAL OVERLAND AND SMALL
STREAM FLOODING WILL CONTINUE OVER WRIGHT AND FRANKLIN COUNTIES.
THUS, AN AREAL FLOOD WARNING REMAINS IN EFFECT FOR THOSE AREAS.
PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4296 9397 4282 9396 4273 9348 4265 9348
4264 9302 4256 9303 4257 9396 4264 9397
4265 9444 4305 9444
$$
MFThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 9:16 PM CDT | Special Weather Statement | DMX | Polk | 29 min |
| Sep 22, 9:37 PM CDT | Flash Flood Warning | DMX | Story | 6 hr |
| Sep 22, 11:24 PM CDT | Flash Flood Warning | DMX | Bremer, Butler, Cerro Gordo, Franklin | 6 hr |
| Sep 23, 12:22 AM CDT | River Flood Warning | DMX | Story | 31 hr |
| Sep 23, 1:14 AM CDT | River Flood Warning | DMX | Polk, Story | 33 hr |
| Sep 23, 1:22 AM CDT | Flash Flood Warning | DMX | Hancock, Wright | 6 hr |
| Sep 23, 5:19 AM CDT | Areal Flood Warning | DMX | Butler, Franklin | 6 hr |
| Sep 23, 5:42 AM CDT | Flash Flood Warning | DMX | Palo Alto, Pocahontas | 4 hr |
| Sep 23, 7:15 AM CDT | Areal Flood Warning | DMX | Hancock, Wright | 4 hr |
| Sep 23, 11:12 AM CDT | Areal Flood Warning | DMX | Black Hawk, Bremer, Butler, Franklin, Hancock, Wright | 48 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.