A warm front was located to the south of Iowa during the day on the 26th.  A steady flow of moisture impinged on the front through the day.  Precipitable water values increased to 1.5 to 1.7 inches during the day.  Very little shear was present, under 20 kts.  CAPE was around 2000 J/kg with 400 J/kg of CAPE on the -10 to -30 C layer of the atmosphere.  Downdraft CAPE was in the 500 to 1000 J/kg range.  Thunderstorms formed in the morning over central Iowa.  They continued to redevelop and train over the area through much of the day.  The event was mainly a heavy rain event with many areas of Polk and Dallas Counties receiving 2 to 6.5 inches of rain during the day.  Flash flooding occurred in Dallas County.  There were a few storms that produced hail.  One inch diameter hail fell in Dallas County, and nickel size hail fell in Warren County.

Heavy Rain in POLK, IOWA
From 26-JUN-14 16:18:00 to 26-JUN-14 16:18:00 (CST-6)
Location: CLOVER HILLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Rainfall of 1.95 inches so far.

Heavy Rain in POLK, IOWA
From 26-JUN-14 09:00:00 to 26-JUN-14 16:00:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Rainfall since 9 AM CST was 1.97 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: DODGE FLD ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Storm total rainfall 4.16 inches with 3.08 in the past 24 hours.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 2.64 inches.

Heavy Rain in ADAIR, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: GREENFIELD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Twenty four hour rainfall total of 4.30 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 09:00:00 to 27-JUN-14 12:30:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Twenty eight hour rainfall total of 4.04 inches.

Heavy Rain in CASS, IOWA
From 26-JUN-14 05:00:00 to 27-JUN-14 05:00:00 (CST-6)
Location: MASSENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 2.28 inches.

Heavy Rain in MAHASKA, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: OSKALOOSA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Twenty four hour rainfall total of 2.21 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: PERRY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 2.79 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 10:00:00 to 26-JUN-14 11:00:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall in the past hours was 2.00 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 13:00:00 to 26-JUN-14 13:00:00 (CST-6)
Location: DALLAS CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall report of 2.75 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 12:57:00 to 26-JUN-14 12:57:00 (CST-6)
Location: SHULER MINE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Rainfall so far today 2.75 to 3.00 inches.

Hail in WARREN, IOWA
From 26-JUN-14 13:55:00 to 26-JUN-14 13:55:00 (CST-6)
Location: INDIANOLA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Heavy Rain in ADAMS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: CORNING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 4.00 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 05:00:00 to 27-JUN-14 05:00:00 (CST-6)
Location: ORTONVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 5.02 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: POLK CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Twenty four hour rainfall total of 2.65 inches.  Thirty hour total was 3.34 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 26-JUN-14 12:30:00 (CST-6)
Location: DODGE FLD ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Total rainfall since 6 AM CST was 2.46 inches.

Heavy Rain in POWESHIEK, IOWA
From 26-JUN-14 11:00:00 to 26-JUN-14 11:00:00 (CST-6)
Location: MONTEZUMA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Total rainfall so far today was 4.70 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 07:00:00 to 26-JUN-14 11:11:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Rainfall since 7 AM CST has been 1.95 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 12:15:00 to 26-JUN-14 12:15:00 (CST-6)
Location: MORAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Total rainfall so far 2.22 inches with 1.29 inches in an hour.

Heavy Rain in POLK, IOWA
From 26-JUN-14 13:20:00 to 26-JUN-14 13:20:00 (CST-6)
Location: RIDER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Daily total rainfall was 2.90 inches.  Little Beaver Creek was bankful.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 09:00:00 to 26-JUN-14 13:25:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Rainfall since 9 AM CST was 4.65 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 12:40:00 to 26-JUN-14 12:40:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Total rainfall so far today was 3.20 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 13:15:00 to 26-JUN-14 13:15:00 (CST-6)
Location: DODGE FLD ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Total rainfall today 3.03 inches with 2.24 in the past six hours.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 09:00:00 to 26-JUN-14 13:40:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall since 9 AM CST was 4.00 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 13:45:00 to 26-JUN-14 13:45:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall total was 4.30 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 13:34:00 to 26-JUN-14 13:34:00 (CST-6)
Location: ORTONVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Rainfall total was 3.80 inches.

Heavy Rain in STORY, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: ZEARING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 2.44 inches.

Heavy Rain in CRAWFORD, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: DENISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 2.35 inches.

Heavy Rain in AUDUBON, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: AUDUBON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 3.20 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: ANKENY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Twenty four hour rainfall total of 2.83 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 09:00:00 to 27-JUN-14 07:35:00 (CST-6)
Location: CLOVER HILLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Twenty four hour rainfall total of 3.09 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 13:50:00 to 26-JUN-14 13:50:00 (CST-6)
Location: ANKENY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall since mid morning was 4.80 inches, with 5.7 in the last 24 hours.

Heavy Rain in POLK, IOWA
From 26-JUN-14 14:19:00 to 26-JUN-14 14:19:00 (CST-6)
Location: CLIVE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Rainfall total in the past 24 hours was 6.50 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 15:07:00 to 26-JUN-14 15:07:00 (CST-6)
Location: DALLAS CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall so far was 3.03 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 09:00:00 to 27-JUN-14 07:35:00 (CST-6)
Location: CLOVER HILLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Twenty four hour rainfall total of 3.09 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: DALLAS CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 4.86 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: DALLAS CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 3.99 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: GRANGER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 3.36 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 15:00:00 to 26-JUN-14 15:00:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rainfall so far was 5.75 inches at Hickman and NW 156th St.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 15:45:00 to 26-JUN-14 15:45:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Total rainfall so far was 3.60 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 16:00:00 to 26-JUN-14 16:00:00 (CST-6)
Location: HADDEN HILL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Rainfall so far was 2.17 inches.

Heavy Rain in DALLAS, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: LINDEN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 3.13 inches.

Heavy Rain in BOONE, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: MADRID
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 2.96 inches.

Heavy Rain in POLK, IOWA
From 26-JUN-14 06:00:00 to 27-JUN-14 06:00:00 (CST-6)
Location: ORALABOR
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Twenty four hour rainfall total of 2.93 inches.

Hail in DALLAS, IOWA
From 26-JUN-14 12:12:00 to 26-JUN-14 12:12:00 (CST-6)
Location: ADEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash Flood in DALLAS, IOWA
From 26-JUN-14 13:39:00 to 26-JUN-14 18:30:00 (CST-6)
Location: HADDEN HILL
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Six to nine inches of water was flowing across 156th street in Urbandale.  About 100 to 200 feet of the road was impacted.

Flash Flood in DALLAS, IOWA
From 26-JUN-14 13:35:00 to 26-JUN-14 18:30:00 (CST-6)
Location: WAUKEE
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Suger Creek was out of its banks and flooding Ashworth road.  The road was closed.