Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 25, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Sep 9, 2016, 11:31 AM CDT for Bremer County, Butler County, Franklin County, Iowa. It was in force for 6 hr. 5 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 9, 2016, 11:31 AM CDT (16:31 UTC)
- Expired
- Sep 9, 2016, 5:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bremer County, IA, Butler County, IA, Franklin County, IA
The radar
The Des Moines radar (KDMX), 125 km from the middle of the area, began a volume at 16:31 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 9, 12:00 PM CDT | HEAVY RAIN 2.9 | Clarksville, IA | TWO HOUR TOTAL. |
| Sep 9, 12:00 PM CDT | HEAVY RAIN 2.9 | Clarksville, IA | MUCH OF THE RAIN OCCURRED OVER THE PAST 2 HOURS. |
| Sep 9, 1:00 PM CDT | FLASH FLOOD | 3 N Clarksville, IA | SEVERAL RURAL ROADS NORTH OF CLARKSVILLE IMPASSABLE DUE TO WATER FLOWING OVER THE ROADS. ESTIMATED TIME. |
| Sep 9, 1:19 PM CDT | HEAVY RAIN 3.25 | Clarksville, IA | UPDATED RAINFALL. RAIN HAS ENDED AT THIS TIME. |
| Sep 9, 2:50 PM CDT | HEAVY RAIN 4.17 | 1 N Clarksville, IA | UPDATED TOTAL FROM NORTH END OF TOWN. |
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 12:00Z, 4.5 hours before the alert went out and 239 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
- 437 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
648
WGUS53 KDMX 091631
FFWDMX
IAC017-023-069-092230-
/O.NEW.KDMX.FF.W.0025.160909T1631Z-160909T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1131 AM CDT FRI SEP 9 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BUTLER COUNTY IN NORTH CENTRAL IOWA...
FRANKLIN COUNTY IN NORTH CENTRAL IOWA...
NORTHWESTERN BREMER COUNTY IN NORTHEASTERN IOWA...
* UNTIL 530 PM CDT FRIDAY.
* AT 1129 AM CDT...DOPPLER RADAR AND AUTOMATED GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. TWO TO
THREE INCHES OF RAIN HAVE ALREADY FALLEN IN THE LAST HOUR AND
PRECIPITATION WILL CONTINUE TO FALL FOR AT LEAST THE NEXT HOUR.
FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HAMPTON...ALLISON...PARKERSBURG...ACKLEY...CLARKSVILLE...SHELL
ROCK...SHEFFIELD...GREENE...APLINGTON...DUMONT...DOWS...LATIMER...
PLAINFIELD...COULTER...ALEXANDER...GENEVA...BRISTOW...BRADFORD...
HANSELL AND CHAPIN.
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 155 AND 174.
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 4256 9264 4256 9350 4281 9350 4291 9323
4291 9243
$$
SKOW2 follow-up statements
365
WGUS73 KDMX 091830
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
130 PM CDT FRI SEP 9 2016
IAC017-023-069-092230-
/O.CON.KDMX.FF.W.0025.000000T0000Z-160909T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BUTLER IA-FRANKLIN IA-BREMER IA-
130 PM CDT FRI SEP 9 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
BUTLER...FRANKLIN AND NORTHWESTERN BREMER COUNTIES...
AT 123 PM CDT...THE HEAVY RAIN HAD DEPARTED THE WARNED AREA. RADAR
ESTIMATES SHOWED THAT AS MUCH AS 2.5 TO 3.5 INCHES OF RAIN HAD
FALLEN ACROSS THE WARNED AREA...WITH 3.25 INCHES MEASURED IN
CLARKSVILLE. ALTHOUGH NO REPORTS OF FLASH FLOODING HAVE NOT YET BEEN
RECEIVED...IT IS EXPECTED TO BEGIN SHORTLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HAMPTON...ALLISON...PARKERSBURG...ACKLEY...CLARKSVILLE...SHELL
ROCK...SHEFFIELD...GREENE...APLINGTON...DUMONT...DOWS...LATIMER...
PLAINFIELD...COULTER...ALEXANDER...GENEVA...BRISTOW...BRADFORD...
HANSELL AND CHAPIN.
THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 155 AND 174.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4256 9264 4256 9350 4281 9350 4291 9323
4291 9243
$$
ZOGG668
WGUS73 KDMX 092231
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
531 PM CDT FRI SEP 9 2016
IAC017-023-069-092241-
/O.EXP.KDMX.FF.W.0025.000000T0000Z-160909T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BUTLER IA-FRANKLIN IA-BREMER IA-
531 PM CDT FRI SEP 9 2016
...THE FLASH FLOOD WARNING FOR BUTLER...FRANKLIN AND NORTHWESTERN
BREMER COUNTIES HAS EXPIRED...
THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4256 9264 4256 9350 4281 9350 4291 9323
4291 9243
$$
BOKSAThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 9:16 AM CDT | Special Weather Statement | DMX | Emmet, Kossuth, Palo Alto, Pocahontas, Sac | 44 min |
| Sep 9, 9:28 AM CDT | Special Weather Statement | DMX | Palo Alto | 32 min |
| Sep 9, 10:22 AM CDT | Special Weather Statement | DMX | Calhoun, Cerro Gordo, Hancock, Humboldt, Webster, Wright | 38 min |
| Sep 9, 11:01 AM CDT | Special Weather Statement | DMX | Boone, Cerro Gordo, Franklin, Greene, Hamilton, Hardin and 3 more | 59 min |
| Sep 9, 11:40 AM CDT | Flash Flood Watch | DMX | Bremer, Butler, Cerro Gordo, Franklin, Hancock, Winnebago and 1 more | 6 hr |
| Sep 9, 11:55 AM CDT | Special Weather Statement | DMX | Bremer | 80 min |
| Sep 9, 1:17 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 43 min |
| Sep 9, 1:29 PM CDT | Special Weather Statement | DMX | Carroll | 46 min |
| Sep 9, 1:59 PM CDT | Special Weather Statement | DMX | Carroll, Greene, Hamilton, Webster | 46 min |
| Sep 9, 2:28 PM CDT | Special Weather Statement | DMX | Boone, Greene, Story | 47 min |
| Sep 9, 2:33 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Story, Webster | 42 min |
| Sep 9, 2:59 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 31 min |
| Sep 9, 3:12 PM CDT | Special Weather Statement | DMX | Dallas, Madison, Polk | 48 min |
| Sep 9, 4:01 PM CDT | Special Weather Statement | DMX | Jasper, Madison, Polk, Warren | 44 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.