Once again the atmosphere over Iowa became very unstable during the peak heating of the day.  CAPE rose to 3500-4500 J/kg by the mid to late afternoon with lifted indices of -8 to -10 C.  The moisture pooled over the state with precipitable water values approaching 2 inches by evening.  High temperatures reached the upper 80s to low 90s, with dewpoints topping out in the upper 70s to low 80s.  The atmosphere was fairly weakly sheared with 30 kts of available shear.  Downdraft CAPE was between 1000 and 1800 J/kg.  Available CAPE in the -10 to -30 C layer of the atmosphere was 800-1100 J/kg, but hail was limited by the high freezing level, 16,000 to 16,500 feet.  Quarter size hail fell in Calhoun County as an intense storm passed though.  The same storm cluster produced a funnel cloud in Sac County earlier.  Scattered winds occurred with the storms.  A 61 MPH wind gust was recorded in Eagle Grove for example and windows were blown out in Humboldt County south of Thor.  One of the thunderstorms produced a tornado in Emmet County.  The tornado touched down briefly over Lake Iowa.  Thunderstorms became more organized during the evening and produced very heavy rainfall.  In addition to the rainfall, scattered reports of high winds and some hail up to an inch and one quarter in size were received.  Most of the wind reports were around 60 MPH.  By far the most significant weather was the heavy rainfall.  Three to 5 inches of rain fell on saturated ground, resulting in a very widespread flash flood event.  Nearly half of the CWA was involved from parts of north central Iowa south to the Missouri border.  Numerous roads were covered with flowing water of 1 to 2 feet in depth.  Lightning struck a car at mile post 105 on Interstate 35 in Story County.  No injuries were reported.  Lightning also struck a house in Ankeny, causing a fire.  The flash flooding claimed one life in central Iowa.   Three vehicles were swept into the waters of Mud Creek near Altoona in Polk County.  There were 11 people involved.  A rescue call was made to save the occupants of the cars.  One 16 year old female perished in the flood waters, the other 10 were rescued, though 4 were injured and received treatment at a local hospital.  The flash flooding transitioned into widespread flooding as the night progressed into the day of the 11th.  Flash flooding resulted in evacuations of apartments and trailer courts on the east side of Des Moines.  Interstate 35 was covered by water due to flash flooding at mile post 97.  Several cars spun out in the flood waters.  Very intense rainfall in the Ames area resulted in a record crest on Squaw Creek.  The creek crested 1.5 to 2.5 feet above the record high stage.  Major flooding took place and the water treatment plant was inundated.  Major damage was done to several buildings on the Iowa State Campus.  Damage to Iowa State alone was between $40,000,000 and $50,000,000.  Flooding from the Skunk River closed U.S. Highway 30.  Thirty people were rescued at a Wal-Mart store in Ames as well.  Following the severe flooding, several Iowa counties were added to the Presidential Disaster Declaration number 1930.  The original 32 were: Adams, Appanoose, Audubon, Buena Vista, Butler, Cherokee, Clay, Davis, Decatur, Franklin, Howard, Humboldt, Iowa, Lee, Lyon, Madison, Marion, Mills, Monroe, Montgomery, O���Brien, Osceola, Palo Alto, Ringgold, Shelby, Union, Van Buren, Wapello, Warren, Wayne, Webster and Wright.  Eighteen were added to the original, incuding: Black Hawk, Boone, Buchanan, Clayton, Delaware, Dickinson, Dubuque, Emmet, Fayette, Guthrie, Jackson, Jasper, Jones, Lucas, Mahaska, Polk, Sioux and Story.  In addition, Governor Chet Culver had issued disaster proclamations for 50 Iowa counties due to inclement weather since June 1, 2010: Appanoose, Black Hawk, Boone, Buchanan, Buena Vista, Butler, Cherokee, Clay, Clayton, Davis, Decatur, Delaware, Dickinson, Dubuque, Emmet, Fayette, Franklin, Hamilton, Hancock, Howard, Humboldt, Jackson, Jasper, Jefferson, Johnson, Jones, Kossuth, Lee, Lucas, Lyon, Mahaska, Marion, Monona, Monroe, O'Brien, Osceola, Palo Alto, Polk, Ringgold, Shelby, Sioux, Story, Taylor, Union, Van Buren, Wapello, Warren, Washington, Webster and Wright.

Flash Flood in POLK, IOWA
From 11-AUG-10 04:40:00 to 11-AUG-10 07:00:00 (CST-6)
Location: SANTIAGO
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 25.00K
Reported by: Emergency Manager

Flooding along Mud Creek.

Flash Flood in HAMILTON, IOWA
From 10-AUG-10 21:30:00 to 11-AUG-10 00:00:00 (CST-6)
Location: STRATFORD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 175 at the intersection of Fenton Ave is closed due to high water.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 20:15:00 to 11-AUG-10 00:00:00 (CST-6)
Location: LUNDGREN
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water rushing over gravel road.  Small creek by house was over its banks and observer said he hadn't seen runoff like this before.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 20:20:00 to 11-AUG-10 00:00:00 (CST-6)
Location: BURNSIDE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water flowing over gravel roads with 3.9 inches of rainfall measured at 1930 CST.  Additional rain from 2000 to 2020 CST.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 18:50:00 to 11-AUG-10 00:00:00 (CST-6)
Location: CLAY WORKS
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 169 was closed and impassable at the intersection of U.S. 20 Business in southern Fort Dodge.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 19:30:00 to 11-AUG-10 00:00:00 (CST-6)
Location: MOORLAND
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Old Highway 20 underpass closed and impassable due to high water.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 19:30:00 to 11-AUG-10 00:00:00 (CST-6)
Location: BURNSIDE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Washout in Dolliver State Park.

Flash Flood in CALHOUN, IOWA
From 10-AUG-10 20:50:00 to 11-AUG-10 00:00:00 (CST-6)
Location: LYTTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County Road N28 under water at the intersection with 240th St.

Flash Flood in CALHOUN, IOWA
From 10-AUG-10 20:50:00 to 11-AUG-10 00:00:00 (CST-6)
Location: KNIERIM
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County Road P19 is under water 2 miles north of Highway 20.

Flash Flood in GREENE, IOWA
From 10-AUG-10 20:54:00 to 11-AUG-10 02:00:00 (CST-6)
Location: HOPE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water over County Highway P46 just south of the Webster County line.

Flash Flood in MARION, IOWA
From 11-AUG-10 00:35:00 to 11-AUG-10 04:30:00 (CST-6)
Location: HARVEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six inches of water reported running through the streets of Harvey.

Tornado in EMMET, IOWA
From 10-AUG-10 16:44:00 to 10-AUG-10 16:45:00 (CST-6)
Location: ARMSTRONG
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado formed and touched down briefly over Iowa Lake.

Heavy Rain in CALHOUN, IOWA
From 10-AUG-10 17:00:00 to 10-AUG-10 17:00:00 (CST-6)
Location: POMEROY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Calhoun County Law Enforcement reports streets in Pomeroy inundated as well as many county roads.  Highway 4 in Pomeroy had standing water 2 feet deep in underpasses.

Heavy Rain in WEBSTER, IOWA
From 10-AUG-10 17:57:00 to 10-AUG-10 17:57:00 (CST-6)
Location: CALLENDER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reports of standing water 2 feet deep surrounding homes in Callender, with additional water flowing from fields and yards.

Heavy Rain in WEBSTER, IOWA
From 10-AUG-10 19:15:00 to 10-AUG-10 19:15:00 (CST-6)
Location: CLAY WORKS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Road closure at Highway 169, 4 miles north of Highway 20.  Estimated 2 to 3 feet of standing water on underpasses with several cars stalled.

Heavy Rain in BOONE, IOWA
From 10-AUG-10 20:13:00 to 11-AUG-10 02:13:00 (CST-6)
Location: MACKEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six inches of storm total rainfall since 1900 CST Tuesday night.  Reported 3 miles south of Highway E18 on Highway 17.

Heavy Rain in HAMILTON, IOWA
From 10-AUG-10 21:23:00 to 10-AUG-10 21:23:00 (CST-6)
Location: RANDALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 3.5 inches and still raining with ditches full.  Shallow water pooling around machine shed.

Flood in HAMILTON, IOWA
From 11-AUG-10 11:02:00 to 12-AUG-10 00:00:00 (CST-6)
Location: STANHOPE
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 50.00K
Reported by: Law Enforcement

Highway 17 was still closed due to flooding.  County Highway R27 also closed south of Highway 175.  Numerous gravel roads under several feet of water.

Flood in STORY, IOWA
From 11-AUG-10 11:07:00 to 12-AUG-10 01:30:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 50.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Hilton Coliseum reported 4 to 6 feet of water inside flooding the stadium and basketball floor.  Cy Stephens Auditorium also reports water in the mechanical building up to the 1st floor.

Flash Flood in HAMILTON, IOWA
From 10-AUG-10 20:07:00 to 11-AUG-10 00:00:00 (CST-6)
Location: STANHOPE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hamilton County Law Enforcement reports Highway 17 closed in Stanhope with water 3 feet deep over roads and storm sewers backing up into homes.

Flash Flood in BREMER, IOWA
From 10-AUG-10 20:23:00 to 11-AUG-10 02:30:00 (CST-6)
Location: WAVERLY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water up to the top of tires on vehicles located at the intersection of 3rd Ave and 4th Street in northwest Waverly.

Flash Flood in BOONE, IOWA
From 10-AUG-10 20:57:00 to 11-AUG-10 02:00:00 (CST-6)
Location: MACKEY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Roads closed include 130th Street from Highway 17 to the county line.  Water rushing over the road 4 to 5 inches deep and 50 feet wide.

Flash Flood in STORY, IOWA
From 10-AUG-10 21:05:00 to 11-AUG-10 02:00:00 (CST-6)
Location: STORY CITY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Broad Street was closed at Forest Ave in Story City due to water running over the road.

Flash Flood in HAMILTON, IOWA
From 10-AUG-10 21:30:00 to 11-AUG-10 00:00:00 (CST-6)
Location: JEWELL
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Intersection of Highway 69 and County Highway D65/380th Street near Jewell has deep water over the road.

Flash Flood in WEBSTER, IOWA
From 10-AUG-10 21:30:00 to 11-AUG-10 00:00:00 (CST-6)
Location: DAYTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 175 west of Stratford has 2 to 3 feet of water running over the road.

Flash Flood in POLK, IOWA
From 10-AUG-10 22:10:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ANKENY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

North Ankeny Boulevard and NE 9th Street was closed due to 16 to 18 inches of water in the intersection.

Flash Flood in POLK, IOWA
From 10-AUG-10 23:16:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ANKENY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Deep impassable water at the intersection of west 1st Street and SW State Street in Ankeny.

Flash Flood in GRUNDY, IOWA
From 10-AUG-10 23:55:00 to 11-AUG-10 02:30:00 (CST-6)
Location: FERN
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water from an unknown creek overflowed onto 120th Street between H Ave and I Ave in northern Grundy County.

Flash Flood in GRUNDY, IOWA
From 10-AUG-10 23:55:00 to 11-AUG-10 02:30:00 (CST-6)
Location: FERN
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water of unknown depth running over 120th Street between I Ave and L Ave.

Flash Flood in MARION, IOWA
From 11-AUG-10 00:35:00 to 11-AUG-10 04:30:00 (CST-6)
Location: TRACY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water reported over 2 lanes of Highway T25 one quarter mile south of Highway 92.

Flash Flood in MONROE, IOWA
From 11-AUG-10 03:26:00 to 11-AUG-10 06:14:00 (CST-6)
Location: GEORGETOWN
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water covering the road due to the Whippoorwill Creek at 170th Street.

Hail in CALHOUN, IOWA
From 10-AUG-10 19:26:00 to 10-AUG-10 19:26:00 (CST-6)
Location: YETTER
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 10.00K
Reported by: Trained Spotter

Trained spotter reported half dollar to possibly golf gall size hail.

Funnel Cloud in SAC, IOWA
From 10-AUG-10 14:57:00 to 10-AUG-10 14:57:00 (CST-6)
Location: SAC CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CALHOUN, IOWA
From 10-AUG-10 17:15:00 to 10-AUG-10 17:15:00 (CST-6)
Location: ROCKWELL CITY
Magnitude: 1.00 
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter size hail was reported at the police station.

Flood in WEBSTER, IOWA
From 11-AUG-10 09:00:00 to 12-AUG-10 00:00:00 (CST-6)
Location: GOWRIE
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several gravel roads closed by water in the Gowrie area that did not have a history of flooding.  Overnight rainfall was 1.7 inches, with 7.7 inches in past 3 days.

Heavy Rain in WEBSTER, IOWA
From 10-AUG-10 16:00:00 to 10-AUG-10 19:30:00 (CST-6)
Location: BURNSIDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 3.9 inches since 1600 CST.

Heavy Rain in WEBSTER, IOWA
From 10-AUG-10 17:00:00 to 10-AUG-10 20:15:00 (CST-6)
Location: LUNDGREN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two and one half inches of rain since 1700 CST.

Thunderstorm Wind in TAMA, IOWA
From 10-AUG-10 20:53:00 to 10-AUG-10 20:53:00 (CST-6)
Location: MONTOUR
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree down on County Highway T47.

Thunderstorm Wind in BLACK HAWK, IOWA
From 10-AUG-10 20:45:00 to 10-AUG-10 20:45:00 (CST-6)
Location: WATERLOO RANCH ARPT
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Tree fell through a roof of a house along Fulton Street.

Thunderstorm Wind in POLK, IOWA
From 10-AUG-10 22:00:00 to 10-AUG-10 22:00:00 (CST-6)
Location: ORALABOR
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated wind gusts of 60 MPH.

Heavy Rain in HAMILTON, IOWA
From 10-AUG-10 22:22:00 to 10-AUG-10 22:22:00 (CST-6)
Location: WEBSTER CITY ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Measured rainfall total of 3.75 inches.

Thunderstorm Wind in CASS, IOWA
From 10-AUG-10 22:29:00 to 10-AUG-10 22:29:00 (CST-6)
Location: CUMBERLAND
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter estimated wind gust of 60 MPH.

Thunderstorm Wind in CASS, IOWA
From 10-AUG-10 22:40:00 to 10-AUG-10 22:40:00 (CST-6)
Location: CUMBERLAND
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Four inch tree branches blown down by thunderstorm winds.

Thunderstorm Wind in DALLAS, IOWA
From 10-AUG-10 23:53:00 to 10-AUG-10 23:53:00 (CST-6)
Location: WOODWARD
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager estimated winds of 60 MPH.

Heavy Rain in STORY, IOWA
From 11-AUG-10 00:37:00 to 11-AUG-10 00:37:00 (CST-6)
Location: STORY CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Rainfall of 4.20 inches was measured by an automated rain gage.

Heavy Rain in POLK, IOWA
From 10-AUG-10 20:07:00 to 11-AUG-10 02:07:00 (CST-6)
Location: POLK CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measured rainfall was 4.94 inches at an automated gage near Big Creek in the last 6 hours.

Heavy Rain in STORY, IOWA
From 10-AUG-10 20:52:00 to 11-AUG-10 02:52:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since 2100 CST was 3.86 inches.

Heavy Rain in POLK, IOWA
From 10-AUG-10 21:00:00 to 11-AUG-10 00:30:00 (CST-6)
Location: ENTERPRISE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since 2100 CST was 3.83 inches.

Thunderstorm Wind in HUMBOLDT, IOWA
From 10-AUG-10 16:44:00 to 10-AUG-10 16:44:00 (CST-6)
Location: THOR
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Windows blown out by estimated winds of 60 MPH.

Flash Flood in POLK, IOWA
From 11-AUG-10 03:55:00 to 11-AUG-10 06:00:00 (CST-6)
Location: SANTIAGO
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 25.00K
Reported by: Emergency Manager

Water rescue in progress regarding three vehicles with a total of 11 people near NE 8th Ave and NE 54th Ave.  There was one fatality, 10 rescues and several injuries.

Heavy Rain in CALHOUN, IOWA
From 10-AUG-10 20:30:00 to 10-AUG-10 20:30:00 (CST-6)
Location: POMEROY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Highway 7 closed at underpass in Pomeroy due to flooding.

Lightning in POLK, IOWA
From 11-AUG-10 04:00:00 to 11-AUG-10 04:00:00 (CST-6)
Location: ANKENY
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

House fire in north Ankeny caused by lightning.

Heavy Rain in HAMILTON, IOWA
From 10-AUG-10 18:00:00 to 11-AUG-10 05:17:00 (CST-6)
Location: RANDALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since Tuesday night was 5.2 inches.

Heavy Rain in WEBSTER, IOWA
From 11-AUG-10 05:30:00 to 11-AUG-10 05:30:00 (CST-6)
Location: BURNSIDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Overnight rainfall was 4.70 inches.

Heavy Rain in POLK, IOWA
From 11-AUG-10 08:17:00 to 11-AUG-10 08:17:00 (CST-6)
Location: ALTOONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 3.34 inches of rain overnight in Altoona.

Flash Flood in POLK, IOWA
From 11-AUG-10 00:25:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ANKENY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quick flowing water 4 to 5 inches in depth covering the intersection of Crestmoor Place and Northeast 6th Street.

Flash Flood in POLK, IOWA
From 10-AUG-10 23:31:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ELKHART
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 25.00K
Reported by: NWS Employee

At least 6 inches of water running across Interstate 35 at mile post 97.  Multiple cars spun out.

Flash Flood in POLK, IOWA
From 10-AUG-10 23:54:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ANKENY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Running water 2 feet deep on Delaware Ave in the 400 block.

Flash Flood in POLK, IOWA
From 10-AUG-10 23:20:00 to 11-AUG-10 03:30:00 (CST-6)
Location: ANKENY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 18 inches of running water across the intersectio nof SE 4th and Trilein in Ankeny.

Flash Flood in POLK, IOWA
From 11-AUG-10 06:30:00 to 11-AUG-10 08:00:00 (CST-6)
Location: DES MOINES
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Evacuations taking place from 3325 Hubble Ave at an apartment complex to 3560 Douglas Ave near a trailer Park in east Des Moines.

Flash Flood in STORY, IOWA
From 10-AUG-10 21:29:00 to 11-AUG-10 02:00:00 (CST-6)
Location: STORY CITY
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Story City police reported widespread flooding throughout Story City.  Had multiple reports of basement flooding with water backing up into them.

Flash Flood in STORY, IOWA
From 10-AUG-10 21:48:00 to 11-AUG-10 02:00:00 (CST-6)
Location: ZEARING
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water running over Highway 65 just south of Zearing.

Thunderstorm Wind in WRIGHT, IOWA
From 10-AUG-10 16:56:00 to 10-AUG-10 16:56:00 (CST-6)
Location: EAGLE GROVE
Magnitude: 53.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Measured by a schoolnet site.

Lightning in STORY, IOWA
From 10-AUG-10 23:20:00 to 10-AUG-10 23:20:00 (CST-6)
Location: MIDVALE
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Lightning struck a car on Interstate 35 at mile post 105.  No injuries reported.