Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 12, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 19, 2016, 10:14 AM CDT for 4 counties in Iowa. It was in force for 6 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
- Jul 19, 2016, 10:14 AM CDT (15:14 UTC)
- Expired
- Jul 19, 2016, 4:15 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Calhoun County, IA, Humboldt County, IA, Pocahontas County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 121 km from the middle of the area, began a volume at 15:14 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 |
|---|---|---|---|
| Jul 19, 10:30 AM CDT | FLASH FLOOD | Fort Dodge, IA | ONE BUSINESS NEAR DOWNTOWN FT DODGE HAD SEVERAL FEET OF WATER INUNDATE A BUILDING. WIDESPREAD STREET FLOODING ALSO OCCURRED. |
| Jul 19, 10:40 AM CDT | HEAVY RAIN 3.5 | 2 Ene Fort Dodge, IA | TOTAL RAINFALL THIS MORNING. |
| Jul 19, 10:59 AM CDT | HEAVY RAIN 2.7 | Manson, IA | RAINFALL TOTAL FOR THIS MORNING. |
| Jul 19, 11:05 AM CDT | FLASH FLOOD | 2 Wnw Otho, IA | BOTH THE NORTHBOUND AND SOUTHBOUND LANES OF U.S. HIGHWAY 169 WERE IMPASSABLE DUE TO FLOODING. |
| Jul 19, 11:30 AM CDT | HEAVY RAIN 2.32 | 2 Nw Pomeroy, IA | PUBLIC WEATHER STATION RAINFALL TOTAL FOR THIS MORNING. |
| Jul 19, 11:33 AM CDT | HEAVY RAIN 3.06 | 3 Nnw Fort Dodge, IA | RAINFALL TOTAL FOR THIS MORNING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 3.2 hours before the alert went out and 201 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
- 1546 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.9
The text
As transmitted.
735
WGUS53 KDMX 191514
FFWDMX
IAC025-091-151-187-192115-
/O.NEW.KDMX.FF.W.0012.160719T1514Z-160719T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1014 AM CDT TUE JUL 19 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN WEBSTER COUNTY IN CENTRAL IOWA...
POCAHONTAS COUNTY IN NORTHWESTERN IOWA...
NORTHERN CALHOUN COUNTY IN WEST CENTRAL IOWA...
SOUTHERN HUMBOLDT COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 415 PM CDT TUESDAY
* AT 1013 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY...WITH
REPORTS OF STREET FLOODING ALREADY OCCURRING IN FORT DODGE.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FORT DODGE...POCAHONTAS...DAKOTA CITY...HUMBOLDT...MANSON...NORTH
TWIN LAKE...FORT DODGE REGIONAL AIRPORT...SOUTH TWIN LAKE...
POMEROY...FONDA...COALVILLE...BADGER...OTHO...GILMORE CITY...
DUNCOMBE...TWIN LAKES...BARNUM...THOR...VINCENT AND MOORLAND.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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.
&&
LAT...LON 4280 9491 4271 9401 4240 9401 4244 9486
4247 9486 4248 9491
$$
MF1 follow-up statement
700
WGUS73 KDMX 192003
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
303 PM CDT TUE JUL 19 2016
IAC025-091-151-187-192013-
/O.CAN.KDMX.FF.W.0012.000000T0000Z-160719T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WEBSTER IA-POCAHONTAS IA-CALHOUN IA-HUMBOLDT IA-
303 PM CDT TUE JUL 19 2016
...THE FLASH FLOOD WARNING FOR NORTHERN WEBSTER...POCAHONTAS...
NORTHERN CALHOUN AND SOUTHERN HUMBOLDT COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. FLOOD WATERS HAVE RECEDED. FLOODING IS NO
LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.
LAT...LON 4280 9491 4271 9401 4240 9401 4244 9486
4247 9486 4248 9491
$$
KOTENBERGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 3:36 AM CDT | Flash Flood Watch | DMX | Appanoose, Boone, Calhoun, Cerro Gordo, Clarke, Dallas and 18 more | 24 hr |
| Jul 19, 7:37 AM CDT | Special Weather Statement | DMX | Calhoun, Humboldt, Pocahontas, Webster | 53 min |
| Jul 19, 11:39 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 51 min |
| Jul 19, 12:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Guthrie | 40 min |
| Jul 19, 12:36 PM CDT | Flash Flood Warning | DMX | Dallas, Madison, Polk, Warren | 6 hr |
| Jul 19, 1:01 PM CDT | Special Weather Statement | DMX | Madison, Union | 59 min |
| Jul 19, 1:10 PM CDT | Special Weather Statement | DMX | Lucas, Mahaska, Marion, Monroe, Wapello, Warren | 50 min |
| Jul 19, 1:34 PM CDT | Flash Flood Warning | DMX | Madison, Mahaska, Marion, Warren | 6 hr |
| Jul 19, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Ringgold, Union, Warren and 1 more | 42 min |
| Jul 19, 1:55 PM CDT | River Flood Warning | DMX | Dallas, Polk | 29 hr |
| Jul 19, 2:07 PM CDT | River Flood Warning | DMX | Black Hawk | 4 days |
| Jul 19, 2:08 PM CDT | Tornado Warning | DMX | Lucas, Monroe | 52 min |
| Jul 19, 2:11 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Clarke, Decatur, Lucas, Monroe, Wayne | 49 min |
| Jul 19, 2:46 PM CDT | River Flood Warning | DMX | Polk | 28 hr |
| Jul 19, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wayne | 33 min |
| Jul 19, 2:59 PM CDT | Flash Flood Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Wayne | 6 hr |
| Jul 19, 3:11 PM CDT | Tornado Warning | DMX | Monroe | 34 min |
| Jul 19, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 39 min |
| Jul 19, 4:24 PM CDT | Excessive Heat Watch | DMX | Adair, Adams, Appanoose, Boone, Clarke, Dallas and 17 more | 12 hr |
| Jul 19, 4:24 PM CDT | Excessive Heat Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 4 days |
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.