Moisture was drawn north into Iowa during the overnight hours of the 6th into the 7th.  The freezing level rose to around 14,500 feet as precipitable water rose to 1.5 to 2 inches.  The atmosphere was weakly sheared, in the 20 to 25 kt range, with about 2000 J/kg of CAPE available.  There was a decent amount of low level CAPE, in the 100 to 300 J/kg range, which favored the production of landspouts.  Other severe parameters were decent with lifted indices in the -6 to -8 C range, downdraft CAPE of 600-800 J/kg, and 400 to 600 J/kg of CAPE in the -10 to -30 C layer of the atmosphere.  Thunderstorms developed in the morning hours over central and northeast Iowa.  The movement was very slow, resulting in very heavy rainfall.  Rainfall of 4 to 7.5 inches was recorded in Black Hawk County in the Waterloo area.  The heavy rain resulted in flash flooding.  Scattered reports of flash flooding were received from Boone County and Jasper County.  Considerable flooding of basements and roads occurred in Waterloo.  In addition, numerous roads were covered by 1 to 2 feet of flowing water in the Waterloo area.  Flash flooding eroded the bed under the railroad in the town of Dewar.  By mid day, scattered reports of funnel clouds were received.  The first were from isolated storms over the central part of the state, later additional reports were received as a cold front advanced southeast across the state during the afternoon and evening.  Heavy rainfall developed over the south central counties into parts of the central counties.  Flash flooding was observed in Lucas County in the Chariton area.  Four and one half inches of rain fell in Chariton.  The resulting flash flooding swept an 11 year old girl into the city storm sewer.  She was carried nearly 3 blocks underground before escaping the waters.  In Poweshiek County, flash flooding took place east and southeast of Brooklyn with water up to 3 feet deep in the street after 3.5 inches of rain fell.

Funnel Cloud in MARION, IOWA
From 07-JUL-10 11:04:00 to 07-JUL-10 11:04:00 (CST-6)
Location: ATTICA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Funnel at the intersection of Highway 5 and T17.

Flash Flood in POWESHIEK, IOWA
From 07-JUL-10 19:24:00 to 07-JUL-10 21:20:00 (CST-6)
Location: BROOKLYN
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three feet of standing water was observed in yards, with 2.5 feet of flowing water in another yard along the side of a shed.  Ten inches of flowing water was flowing down the alley.  Three and one half inches of rain fell in a short time.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 06:50:00 to 07-JUL-10 11:30:00 (CST-6)
Location: CEDAR FALLS JCT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated 1.5 feet of water flowing down Alexandra Drive at the intersection with San Marnan Drive.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 07:38:00 (CST-6)
Location: DUNKERTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall total since 0500 CST was 2.68 inches.

Heavy Rain in AUDUBON, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 08:03:00 (CST-6)
Location: GRAY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Measured 3 inches of rain since 0500 CST.

Flash Flood in LUCAS, IOWA
From 07-JUL-10 17:20:00 to 07-JUL-10 21:30:00 (CST-6)
Location: CHARITON
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Water knee deep in the streets.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 03:00:00 to 07-JUL-10 11:20:00 (CST-6)
Location: DEWAR
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 4.25 inches since 0300 CST.

Flash Flood in TAMA, IOWA
From 07-JUL-10 12:00:00 to 07-JUL-10 14:00:00 (CST-6)
Location: TOLEDO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

An inch of rain fell in under an hour, causing minor flash flooding.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 09:30:00 (CST-6)
Location: WATERLOO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rainfall since 0500 CST was 3.22 inches.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 07:45:00 to 07-JUL-10 11:30:00 (CST-6)
Location: DEWAR
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Department of Highways

Iowa 281 about 2.5 miles east of Waterloo at the intersection of Black Hawk County Highway V49 is closed due to flooding.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 11:26:00 (CST-6)
Location: WATERLOO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 4.25 inches measured.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 04:37:00 to 07-JUL-10 07:37:00 (CST-6)
Location: EVANSDALE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Two reports of 5-6 inches in the past three hours in the town of Evansdale.

Flash Flood in LUCAS, IOWA
From 07-JUL-10 18:09:00 to 07-JUL-10 21:30:00 (CST-6)
Location: CHARITON
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Street manhole covers were blown off on Court Ave.  Apartments were flooded on the 1700 block of Court Ave.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 04:30:00 to 07-JUL-10 09:37:00 (CST-6)
Location: WATERLOO
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rainfall of 3.8 to 4 inches since 0430 CST.  Several houses have water in the basement.

Flash Flood in BOONE, IOWA
From 07-JUL-10 09:16:00 to 07-JUL-10 14:30:00 (CST-6)
Location: BOONE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water over County Highway R27/P Ave north of Boone.  Several gravel roads throughout northeast Boone County are covered with water.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 07:31:00 to 07-JUL-10 11:30:00 (CST-6)
Location: WATERLOO
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported the road impassible at the intersection of Franklin and Elm Street due to water.

Funnel Cloud in MARSHALL, IOWA
From 07-JUL-10 10:54:00 to 07-JUL-10 10:54:00 (CST-6)
Location: LAUREL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Brief funnel cloud observed along Highway 14.

Flash Flood in LUCAS, IOWA
From 07-JUL-10 18:33:00 to 07-JUL-10 21:30:00 (CST-6)
Location: CHARITON
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

York Street washed out and was closed near the 400 block.  Widespread basement flooding.

Heavy Rain in CARROLL, IOWA
From 07-JUL-10 06:00:00 to 07-JUL-10 07:30:00 (CST-6)
Location: MANNING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Measured rainfall in the past 1.5 hours was 3 inches.

Funnel Cloud in MONROE, IOWA
From 07-JUL-10 10:58:00 to 07-JUL-10 10:58:00 (CST-6)
Location: LOVILIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Brief funnel on Highway 5 at the county border.

Flash Flood in BOONE, IOWA
From 07-JUL-10 10:05:00 to 07-JUL-10 14:30:00 (CST-6)
Location: MACKEY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Montgomery Creek was far out of its banks and approaching the road bridge.  Rainfall of 2.79 inches occurred in under 2 hours.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 09:43:00 (CST-6)
Location: ORANGE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Reported rainfall of 4.75 inches along Highway 20 since 0500 CST.

Flash Flood in LUCAS, IOWA
From 07-JUL-10 19:10:00 to 07-JUL-10 21:30:00 (CST-6)
Location: CHARITON
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Fourth Street was washed out and closed near the 400 block.  Widespread basement flooding.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 09:00:00 to 07-JUL-10 11:30:00 (CST-6)
Location: DEWAR
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of the railroad bed undermined near the town of Dewar.

Funnel Cloud in CALHOUN, IOWA
From 07-JUL-10 14:23:00 to 07-JUL-10 14:23:00 (CST-6)
Location: FARNHAMVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a small funnel half way to the ground just northwest of Farnhamville.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 06:10:00 to 07-JUL-10 11:30:00 (CST-6)
Location: ORANGE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

At least a foot of water flowing over the intersection of Dysart and Larkspur.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 09:47:00 (CST-6)
Location: WATERLOO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rainfall since 0500 CST was 3.22 inches.

Funnel Cloud in HUMBOLDT, IOWA
From 07-JUL-10 14:34:00 to 07-JUL-10 14:34:00 (CST-6)
Location: BRADGATE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash Flood in BOONE, IOWA
From 07-JUL-10 10:45:00 to 07-JUL-10 14:30:00 (CST-6)
Location: RIDGEPORT
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Intersection of County Highways R27 and E18 closed due to flooding.  Over a foot of water was reported flowing over a gravel road in the same area.  Four to 5 inches of rainfall has been measured.

Flash Flood in BLACK HAWK, IOWA
From 07-JUL-10 10:15:00 to 07-JUL-10 11:30:00 (CST-6)
Location: EVANSDALE
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Intersection of Shaulis Road near Highway 218 had water up to the car doors.

Flash Flood in JASPER, IOWA
From 07-JUL-10 06:10:00 to 07-JUL-10 12:00:00 (CST-6)
Location: NEWTON MUNI ARPT
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water reported flowing over Highway 6 west of Kellogg.  Three inches of rainfall thus far and still raining.

Heavy Rain in BLACK HAWK, IOWA
From 07-JUL-10 05:00:00 to 07-JUL-10 10:40:00 (CST-6)
Location: RAYMOND
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rainfall of 7.5 inches measured from 4 different rain gages.

Heavy Rain in JASPER, IOWA
From 07-JUL-10 04:01:00 to 07-JUL-10 07:01:00 (CST-6)
Location: NEWTON MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Rainfall in the past 3 hours of 2.28 inches.