Alert archive / Iowa / Flash Flood Warnings in 2016

Flash Flood Warning 13, NWS Des Moines, IA

July 19, 20164 counties in Iowa

NWS Des Moines, IA issued this flash flood warning at Jul 19, 2016, 12:36 PM CDT for 4 counties in Iowa. It was in force for 6 hr. 31 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, 12:36 PM CDT (17:36 UTC)
Expired: Jul 19, 2016, 6:30 PM CDT
In force: 6 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

Counties Dallas County, IA, Madison County, IA, Polk County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 11 km from the middle of the area, began a volume at 17:37 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
Jul 19, 1:03 PM CDT	HEAVY RAIN 2.16	Clive, IA	CO-OP OBSERVER STATION WALNUT CRK /CLVI4/.
Jul 19, 1:24 PM CDT	FLASH FLOOD	1 Ene Des Moines Int Ai, IA	TRAINED SPOTTER REPORTED WATER OVER THE ROAD BUMPER HIGH, AROUND 12 INCHES, AT FLEUR DRIVE AND MCKINLEY AVE. ALSO REPORTED A STALLED VEHICLE AT SW 9TH ST AND MCKINLEY AVE WITH WATER OVER THE ROAD. .
Jul 19, 1:30 PM CDT	HEAVY RAIN 3.9	2 Ssw Clive, IA	.
Jul 19, 1:41 PM CDT	HEAVY RAIN 2.75	3 Nnw Waukee, IA	CO-OP OBSERVER STATION WALNUT CREEK ALERT STATION /WCDI4/.
Jul 19, 1:45 PM CDT	FLASH FLOOD	1 E Cumming, IA	TRAINED SPOTTER REPORTED SEVERAL STREETS IN TOWN EXPERIENCED FLOODING. NUMEROUS STREAMS ALSO OVERFLOWING THEIR BANKS, INCLUDING APPLE CREEK. TIME OF IMPACTS ESTIMATED. .
Jul 19, 2:04 PM CDT	HEAVY RAIN 2.13	3 Ssw Norwalk, IA	MESONET STATION 2 SW NORWALK /C7529/.
Jul 19, 2:30 PM CDT	FLASH FLOOD	3 Ne Des Moines, IA	ROAD CLOSURE AT UNIVERSITY AND HUBBELL AVE DUE TO FLOODING. .
Jul 19, 3:00 PM CDT	FLASH FLOOD	5 Nne Winterset, IA	ROAD CLOSURE ON NORTH RIVER TRAIL DUE TO FLOODING. .
Jul 19, 3:21 PM CDT	HEAVY RAIN 3.71	3 W West Des Moines, IA	CO-OP OBSERVER STATION JORDAN CRK /JDAI4/.
Jul 19, 3:27 PM CDT	HEAVY RAIN 2.72	4 Wnw Grimes, IA	CO-OP OBSERVER STATION WALNUT CREEK ALERT STATION /WCCI4/.
Jul 19, 4:30 PM CDT	HEAVY RAIN 2.6	1 Sse Altoona, IA	.
Jul 19, 4:30 PM CDT	HEAVY RAIN 3.53	3 Sw Clive, IA	NWS EMPLOYEE MEASURED HEAVY RAINFALL OF 3.53 INCHES EVENT TOTAL.
Jul 19, 4:30 PM CDT	HEAVY RAIN 3.53	3 Sw Clive, IA	TOTAL RAINFALL TODAY.
Jul 19, 4:30 PM CDT	HEAVY RAIN 4.94	Windsor Heights, IA	TOTAL RAINFALL TODAY.
Jul 19, 4:40 PM CDT	HEAVY RAIN 4.83	Norwalk, IA	RELAYED BY KCCI TV.
Jul 19, 4:40 PM CDT	HEAVY RAIN 5.23	1 W Cumming, IA	RELAYED BY KCCI TV.
Jul 19, 4:58 PM CDT	HEAVY RAIN 4.6	Adel, IA	.
Jul 19, 5:00 PM CDT	HEAVY RAIN 3.3	1 W Waukee, IA	COCORAHS STATION WAUKEE 0.6 W /IA-DL-18/.
Jul 19, 5:00 PM CDT	HEAVY RAIN 3.5	Johnston, IA	PUBLIC REPORTED HEAVY RAINFALL OF 3.50 INCHES SO FAR VIA SOCIAL MEDIA.
Jul 19, 5:00 PM CDT	HEAVY RAIN 4.89	Cumming, IA	PUBLIC REPORTED HEAVY RAINFALL OF 4.89 INCHES SO FAR VIA SOCIAL MEDIA.
Jul 19, 5:00 PM CDT	HEAVY RAIN 4.89	Cumming, IA	PUBLIC REPORTED HEAVY RAINFALL OF 4.98 INCHES SO FAR VIA SOCIAL MEDIA.
Jul 19, 5:05 PM CDT	HEAVY RAIN 4	1 W Norwalk, IA	PUBLIC REPORTED HEAVY RAINFALL OF 4.00 INCHES WITH LIGHT RAIN ONGOING. REPORTED VIA SOCIAL MEDIA.
Jul 19, 5:25 PM CDT	HEAVY RAIN 3.23	2 Ese Waukee, IA	SPOTTER REPORTED HEAVY RAINFALL OF 3.23 EVENT TOTAL SO FAR. .
Jul 19, 5:45 PM CDT	HEAVY RAIN 3.15	3 Wsw Grimes, IA	PUBLIC REPORTED HEAVY RAINFALL OF 3.15 INCHES EVENT TOTAL VIA SOCIAL MEDIA. .
Jul 19, 5:45 PM CDT	HEAVY RAIN 3.68	2 Ene Urbandale, IA	PUBLIC REPORTED HEAVY RAINFALL OF 3.68 INCHES STORM TOTAL VIA SOCIAL MEDIA. .
Jul 19, 6:00 PM CDT	HEAVY RAIN 2.9	2 N Grimes, IA	PUBLIC REPORTED HEAVY RAINFALL OF 2.90 INCHES EVENT TOTAL VIA SOCIAL MEDIA. .
Jul 19, 6:00 PM CDT	HEAVY RAIN 4.3	3 Se Waukee, IA	PUBLIC REPORTED HEAVY RAINFALL OF 4.30 INCHES EVENT TOTAL VIA SOCIAL MEDIA. .
Jul 19, 6:12 PM CDT	FLASH FLOOD	5 Sw Carlisle, IA	EMERGENCY MANAGER RELAYED ROAD CLOSURE OF 138TH AVE NORTH OF ELK HORN ST.
Jul 19, 6:15 PM CDT	FLASH FLOOD	2 Nw Carlisle, IA	LAW ENFORCEMENT REPORTED CLOSURE OF SE 52ND ST/155TH AVE BETWEEN HIGHWAY 5 AND SE 72ND AVE.
Jul 19, 6:15 PM CDT	HEAVY RAIN 6	1 Sse Waukee, IA	PUBLIC REPORTED HEAVY RAINFALL OF 6 INCHES EVENT TOTAL VIA SOCIAL MEDIA. .
Jul 19, 6:30 PM CDT	HEAVY RAIN 6	1 Nne Urbandale, IA	PUBLIC REPORTED HEAVY RAINFALL OF 6.00 INCHES EVENT TOTAL VIA SOCIAL MEDIA.

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, 5.6 hours before the alert went out and 229 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

251 
WGUS53 KDMX 191736
FFWDMX
IAC049-121-153-181-192330-
/O.NEW.KDMX.FF.W.0013.160719T1736Z-160719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1236 PM CDT TUE JUL 19 2016

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN MADISON COUNTY IN SOUTH CENTRAL IOWA...
  POLK COUNTY IN CENTRAL IOWA...
  NORTHERN WARREN COUNTY IN SOUTH CENTRAL IOWA...
  EASTERN DALLAS COUNTY IN CENTRAL IOWA...

* UNTIL 630 PM CDT

* AT 1235 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. AS MUCH AS 2 TO 3 INCHES OF
  RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DES MOINES...WEST DES MOINES...ANKENY...URBANDALE...JOHNSTON...
  CLIVE...ALTOONA...WAUKEE...NORWALK...PLEASANT HILL...GRIMES...
  PERRY...ADEL...WINDSOR HEIGHTS...CARLISLE...BONDURANT...POLK
  CITY...SAYLORVILLE...MITCHELLVILLE AND DALLAS CENTER.

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...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4184 9407 4183 9335 4160 9335 4160 9333
      4140 9333 4140 9407

$$

ZOGG

3 follow-up statements

695 
WGUS73 KDMX 191944
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
244 PM CDT TUE JUL 19 2016

IAC049-121-153-181-192330-
/O.CON.KDMX.FF.W.0013.000000T0000Z-160719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IA-POLK IA-WARREN IA-DALLAS IA-
244 PM CDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHEASTERN MADISON...POLK...NORTHERN WARREN AND EASTERN DALLAS
COUNTIES...

AT 241 PM CDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORMS
PRODUCED HEAVY RAIN ACROSS THE WARNING AREA.  RAINFALL AMOUNTS OF 2
TO 5 INCHES HAVE BEEN COMMON OVER THE AREA. SIGNIFICANT PONDING AND
AREAS OF FLASH FLOODING ARE OCCURRING. THUNDERSTORMS ARE BEGINNING
TO END FROM THE NORTHWEST. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DES MOINES...WEST DES MOINES...ANKENY...URBANDALE...JOHNSTON...
CLIVE...ALTOONA...WAUKEE...NORWALK...PLEASANT HILL...GRIMES...
PERRY...ADEL...WINDSOR HEIGHTS...CARLISLE...BONDURANT...POLK CITY...
SAYLORVILLE...MITCHELLVILLE AND DALLAS CENTER.

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...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4184 9407 4183 9335 4160 9335 4160 9333
      4140 9333 4140 9407

$$

DONAVON

342 
WGUS73 KDMX 192312
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
612 PM CDT TUE JUL 19 2016

IAC049-121-153-192321-
/O.CAN.KDMX.FF.W.0013.000000T0000Z-160719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IA-POLK IA-DALLAS IA-
612 PM CDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN MADISON...POLK AND
EASTERN DALLAS COUNTIES IS CANCELLED...

FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4140 9352 4151 9352 4150 9344 4151 9342
      4149 9342 4150 9340 4149 9340 4150 9338
      4149 9336 4150 9336 4148 9335 4149 9333
      4140 9333

$$

IAC181-192330-
/O.CON.KDMX.FF.W.0013.000000T0000Z-160719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN IA-
612 PM CDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHEASTERN WARREN COUNTY...

AT 611 PM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING
IN CARLISLE WHICH HAS LED TO ROAD CLOSURES.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CARLISLE AND HARTFORD. 

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...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4140 9352 4151 9352 4150 9344 4151 9342
      4149 9342 4150 9340 4149 9340 4150 9338
      4149 9336 4150 9336 4148 9335 4149 9333
      4140 9333

$$

KOTENBERG

581 
WGUS73 KDMX 192330
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
630 PM CDT TUE JUL 19 2016

IAC181-192337-
/O.EXP.KDMX.FF.W.0013.000000T0000Z-160719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN IA-
630 PM CDT TUE JUL 19 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN WARREN COUNTY WILL EXPIRE
AT 630 PM CDT...

THE HEAVY RAIN HAS ENDED. FLOOD WATERS HAVE RECEDED. BE AWARE THAT
FLOODING IS STILL BEING REPORTED IN CARLISLE ALONG 155TH/SOUTHEAST
52ND BETWEEN 72ND AVENUE AND HIGHWAY 5. ADDITIONALLY, MINOR FLOODING
IS OCCURRING IN NEAR CUMMING DUE TO SMALL STREAMS SLIGHTLY EXCEEDING
BANK FULL. CONDITIONS SHOULD IMPROVE IN THESE LOCATIONS THROUGH THE
EVENING HOURS. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
IF YOU ENCOUNTER A FLOODED AREA, TURN AROUND, DO NOT DROWN.

LAT...LON 4140 9352 4151 9352 4150 9344 4151 9342
      4149 9342 4150 9340 4149 9340 4150 9338
      4149 9336 4150 9336 4148 9335 4149 9333
      4140 9333

$$

KOTENBERG

The 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, 10:14 AM CDT	Flash Flood Warning	DMX	Calhoun, Humboldt, Pocahontas, Webster	6 hr
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, 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 Tornado observed	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, 2016 Every 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.