Overnight and morning rainfall was heavy, totally in excess of 2 inches in many locations, including high values of 4.2 and 6.4 respectively in the State Center area.  A couple instances of flash flooding were observed as well.

Heavy Rain in CRAWFORD, IOWA
From 05-JUL-15 23:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: DENISON MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Denison AWOS reported 1.57 inches of rain from midnight through 7am.

Heavy Rain in DALLAS, IOWA
From 05-JUL-15 07:24:00 to 06-JUL-15 07:24:00 (CST-6)
Location: ADEL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.50 inches of rain over the last 24 hours.

Heavy Rain in CRAWFORD, IOWA
From 06-JUL-15 02:00:00 to 06-JUL-15 12:42:00 (CST-6)
Location: DENISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.92 inches of rain since 3am.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: MARSHALLTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 2.60 inches of rain over the last 24 hours.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 23:00:00 to 06-JUL-15 06:34:00 (CST-6)
Location: MARSHALLTOWN ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS site reported 2.11 inches since midnight.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: MARSHALLTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported 2.40 inches of rain over the last 24 hours.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: GILMAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported 2.75 inches of rain over the last 24 hours.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 23:00:00 to 06-JUL-15 07:11:00 (CST-6)
Location: MARSHALLTOWN ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Updated Marshalltown ASOS report of 2.87 inches of rain since midnight.

Heavy Rain in GRUNDY, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: CONRAD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported 1.75 inches of rain over the last 24 hours.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 23:00:00 to 06-JUL-15 08:25:00 (CST-6)
Location: STATE CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Marshall county Emergency Manager measured 4.20 inches of total rainfall for the event.

Heavy Rain in MARSHALL, IOWA
From 05-JUL-15 12:00:00 to 06-JUL-15 12:00:00 (CST-6)
Location: MARSHALLTOWN ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Updated 24 hour rainfall amount of 3.14 inches over the last 24 hours at the Marshalltown airport.

Heavy Rain in POLK, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: ALTOONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS 24 hour rainfall report of 1.60 inches of rain.

Heavy Rain in POLK, IOWA
From 05-JUL-15 06:30:00 to 06-JUL-15 06:30:00 (CST-6)
Location: POLK CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee measured 2.01 inches of rain over the last 24 hours at the office.

Heavy Rain in POLK, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: DODGE FLD ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported 2.30 inches of rain over the last 24 hours.

Heavy Rain in POLK, IOWA
From 05-JUL-15 23:00:00 to 06-JUL-15 06:49:00 (CST-6)
Location: GRIMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter measured 1.80 inches of rain so far today.  Most of the rain came in the previous 2 hours.

Heavy Rain in STORY, IOWA
From 05-JUL-15 06:53:00 to 06-JUL-15 06:53:00 (CST-6)
Location: NEVADA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 1.81 inches of rain over the last 24 hours.

Heavy Rain in STORY, IOWA
From 05-JUL-15 07:04:00 to 06-JUL-15 07:04:00 (CST-6)
Location: IOWA CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 3.5 inches of rain over the last 24 hours.

Heavy Rain in POWESHIEK, IOWA
From 05-JUL-15 07:00:00 to 06-JUL-15 07:00:00 (CST-6)
Location: GRINNELL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 1.61 inches of rain over the past 24 hours.

Heavy Rain in STORY, IOWA
From 05-JUL-15 12:00:00 to 06-JUL-15 12:00:00 (CST-6)
Location: AMES ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Updated 24 hour rainfall total of 1.57 inches at the Ames Municipal Airport.

Heavy Rain in POLK, IOWA
From 05-JUL-15 12:00:00 to 06-JUL-15 12:00:00 (CST-6)
Location: POLK CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Updated 24 hour rainfall total of 2.28 inches at the NWS Des Moines Office.

Thunderstorm Wind in DALLAS, IOWA
From 06-JUL-15 05:23:00 to 06-JUL-15 05:23:00 (CST-6)
Location: GRANGER
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was downed along with some other smaller branches.

Heavy Rain in DALLAS, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: WAUKEE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 2.08 inches of rain over a 24 hour period.

Heavy Rain in DALLAS, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: SHULER MINE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS report of 2.20 inches of rain.

Heavy Rain in CRAWFORD, IOWA
From 05-JUL-15 06:00:00 to 06-JUL-15 06:00:00 (CST-6)
Location: DENISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported 2.82 inches of rain over the last 24 hours.

Heavy Rain in MARSHALL, IOWA
From 06-JUL-15 12:15:00 to 06-JUL-15 12:15:00 (CST-6)
Location: STATE CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Updated 24 hour rainfall amount of approximately 6.40 inches reported by the county Emergency Manager.

Flash Flood in DALLAS, IOWA
From 06-JUL-15 06:23:00 to 06-JUL-15 06:23:00 (CST-6)
Location: DALLAS CENTER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water of unknown depth across Highway 44 in two spots 3 miles east of Dallas Center.

Flash Flood in STORY, IOWA
From 06-JUL-15 06:50:00 to 06-JUL-15 10:00:00 (CST-6)
Location: COLO
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water reported to be about a foot deep across Highway 65 and Lincoln Highway and also north of Colo on Highway 65 and 190th St.

Flash Flood in STORY, IOWA
From 06-JUL-15 07:35:00 to 06-JUL-15 10:00:00 (CST-6)
Location: COLO
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reports water over roadways in the city of Colo.

Thunderstorm Wind in POLK, IOWA
From 06-JUL-15 05:30:00 to 06-JUL-15 05:30:00 (CST-6)
Location: HERROLD
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

An 18 inch diameter tree downed along with smaller 4 inch branches down nearby.