A very unstable airmass was in place over Iowa. Afternoon temperatures warmed into the upper 80s to mid 90s, with dewpoint readings in the upper 70s to low 80s.  A weak boundary extended out of eastern Nebraska across northern Iowa.  This boundary helped to focus moisture.  At the same time, a negatively tilted shortwave lifted northeast out of the Rockies into Nebraska during the afternoon and early evening.  The lifted index fell to -10 to -14 C by evening with CAPE rising to 5000-7000 J/kg in the very moist airmass.  The freezing level was very high, between 16,000 and 17,000 feet.  As a result, there was little in the way of hail.  The downdraft CAPE was quite high, 800 to 1400 J/kg.  Thunderstorms formed in northeast Nebraska.  They rapidly formed into an upscale MCS, and eventually a full-fledged MCC.  Precipitable water values were extremely high, in the 2.5 to 2.75 inch range.  The primary mode of severe weather with the system was in the form of high wind.  Wind gusts of 60 to 70 MPH caused sporadic damage across western into central Iowa with tree damage, as well as damage to outbuildings.  The storms produced one funnel cloud in Carroll County.  The high precipitable water values led to very heavy rainfall with widespread flash flooding.  A swath of 2 to 5 inch rainfall extended from west central, through central, into parts of southeast Iowa.  There were numerous reports of a foot or more of flowing water over streets.  Following the flash flooding, water remained standing on many roads due to the soils across the state being nearly saturated.  This resulted in some road closures.  The Des Moines metropolitan area was hard hit as 3 to 5 inches of rain fell in 4 hours or less.  This caused extensive flooding in the city.  Some evacuations took place.  One was at a trailer court along Four Mile Creek on the east side of Des Moines.  Numerous roads were closed on the west side as well as Walnut Creek jumped its banks.  In fact, the creek set an all-time record high stage.  Fast rising waters of North Walnut Creek flooded four basement apartment units in Clive with water rescues taking place.  Lightning struck a house in Adel, setting it on fire.  The family was asleep at the time and were rescued by the fire department after the house had been on fire for 45 minutes.  Damage to the house was around $1,000,000 as it was a total loss, burned to the ground.  In Black Hawk County, lightning struck the water treatment plant in Cedar Falls.  Power was knocked out, resulting in the discharge of 750,000 gallons of sewage into the Cedar River.  Lightning struck the historical depot in Carroll, now the Chamber of Commerce, and caused minor damage to the roof.  It also knocked out telephone service to 3 adjacent buildings.

Thunderstorm Wind in SAC, IOWA
From 08-AUG-10 19:10:00 to 08-AUG-10 19:10:00 (CST-6)
Location: SCHALLER
Magnitude: 61.00 EG
Property damage: 300.00K
Crop damage: 15.00K
Reported by: Trained Spotter

Trees down and uprooted.  Power lines down with some trees snapped.

Thunderstorm Wind in CALHOUN, IOWA
From 08-AUG-10 19:37:00 to 08-AUG-10 19:37:00 (CST-6)
Location: JOLLEY
Magnitude: 62.00 MG
Property damage: 5.00K
Crop damage: 50.00K
Reported by: Public

Six to 10 inch tree limbs down.  Crop damage reported.

Thunderstorm Wind in CALHOUN, IOWA
From 08-AUG-10 19:41:00 to 08-AUG-10 19:41:00 (CST-6)
Location: ROCKWELL CITY
Magnitude: 54.00 MG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two large trees down in town.

Thunderstorm Wind in WEBSTER, IOWA
From 08-AUG-10 20:13:00 to 08-AUG-10 20:13:00 (CST-6)
Location: ROELYN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated a wind gust of 60 MPH.

Thunderstorm Wind in KOSSUTH, IOWA
From 08-AUG-10 20:22:00 to 08-AUG-10 20:22:00 (CST-6)
Location: ALGONA
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds were bending trees and blowing patio furniture over.

Thunderstorm Wind in HUMBOLDT, IOWA
From 08-AUG-10 20:24:00 to 08-AUG-10 20:24:00 (CST-6)
Location: DAKOTA CITY
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WEBSTER, IOWA
From 08-AUG-10 20:22:00 to 08-AUG-10 20:22:00 (CST-6)
Location: (FOD)FT DODGE MUNI A
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong winds blowing small objects and bending trees significantly.

Thunderstorm Wind in WRIGHT, IOWA
From 08-AUG-10 20:41:00 to 08-AUG-10 20:41:00 (CST-6)
Location: EAGLE GROVE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in POCAHONTAS, IOWA
From 08-AUG-10 19:45:00 to 08-AUG-10 19:45:00 (CST-6)
Location: FONDA
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Employee

Off-duty Sioux Falls NWS employee reported strong winds.

Thunderstorm Wind in CALHOUN, IOWA
From 08-AUG-10 19:50:00 to 08-AUG-10 19:50:00 (CST-6)
Location: POMEROY
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Employee

Off Duty Sioux Falls NWS employee reported trees and street signs down in town.

Thunderstorm Wind in EMMET, IOWA
From 08-AUG-10 20:23:00 to 08-AUG-10 20:23:00 (CST-6)
Location: WELLINGFORD
Magnitude: 57.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind blew the roof off of the Wallingford Community Center.

Thunderstorm Wind in POCAHONTAS, IOWA
From 08-AUG-10 19:45:00 to 08-AUG-10 19:45:00 (CST-6)
Location: FONDA
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Walls of brick buildings destroyed on main street and a 40,000 bushel grain bin was destroyed.

Thunderstorm Wind in EMMET, IOWA
From 08-AUG-10 19:53:00 to 08-AUG-10 19:53:00 (CST-6)
Location: WELLINGFORD
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Fire chief reported a roof blown off in Wallingford.

Thunderstorm Wind in PALO ALTO, IOWA
From 08-AUG-10 19:58:00 to 08-AUG-10 19:58:00 (CST-6)
Location: GRAETTINGER
Magnitude: 57.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Local law enforcement reported streets closed due to downed trees in Graettinger.

Thunderstorm Wind in CALHOUN, IOWA
From 08-AUG-10 19:25:00 to 08-AUG-10 19:25:00 (CST-6)
Location: LYTTON
Magnitude: 57.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large trees uprooted and large limbs downed by high winds.

Thunderstorm Wind in POCAHONTAS, IOWA
From 08-AUG-10 19:45:00 to 08-AUG-10 19:45:00 (CST-6)
Location: LAURENS
Magnitude: 57.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Three foot diameter trees and large limbs were blown down.

Thunderstorm Wind in BOONE, IOWA
From 08-AUG-10 20:58:00 to 08-AUG-10 20:58:00 (CST-6)
Location: BOONE MUNI ARPT
Magnitude: 54.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in STORY, IOWA
From 08-AUG-10 21:04:00 to 08-AUG-10 21:04:00 (CST-6)
Location: AMES
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated wind speed of 60 MPH.

Thunderstorm Wind in MARSHALL, IOWA
From 08-AUG-10 21:38:00 to 08-AUG-10 21:38:00 (CST-6)
Location: MARSHALLTOWN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches were blown down by 60 MPH winds.

Heavy Rain in CARROLL, IOWA
From 09-AUG-10 03:20:00 to 09-AUG-10 03:20:00 (CST-6)
Location: LIDDERDALE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Overnight rainfall was 2.30 inches.

Heavy Rain in HAMILTON, IOWA
From 09-AUG-10 03:32:00 to 09-AUG-10 03:32:00 (CST-6)
Location: RANDALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Overnight rainfall was 2.60 inches.

Thunderstorm Wind in MARSHALL, IOWA
From 08-AUG-10 21:49:00 to 08-AUG-10 21:49:00 (CST-6)
Location: MARSHALLTOWN
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Power was knocked out by winds of 65 MPH.

Thunderstorm Wind in BREMER, IOWA
From 08-AUG-10 22:12:00 to 08-AUG-10 22:12:00 (CST-6)
Location: PLAINFIELD
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lightning in DALLAS, IOWA
From 08-AUG-10 21:45:00 to 08-AUG-10 21:45:00 (CST-6)
Location: ADEL
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm Wind in DALLAS, IOWA
From 08-AUG-10 21:09:00 to 08-AUG-10 21:09:00 (CST-6)
Location: WAUKEE
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ten to 15 foot mature tree blown down at Centennial Park.

Thunderstorm Wind in GUTHRIE, IOWA
From 08-AUG-10 22:20:00 to 08-AUG-10 22:20:00 (CST-6)
Location: BAYARD
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sweet corn was completely blown over with small branches down.

Thunderstorm Wind in BREMER, IOWA
From 08-AUG-10 22:30:00 to 08-AUG-10 22:30:00 (CST-6)
Location: TRIPOLI
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several tree limbs and branches down in Tripoli.

Heavy Rain in GREENE, IOWA
From 08-AUG-10 20:00:00 to 08-AUG-10 21:13:00 (CST-6)
Location: JEFFERSON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since 2000 CST was 2.15 inches.

Heavy Rain in POLK, IOWA
From 08-AUG-10 22:00:00 to 08-AUG-10 22:00:00 (CST-6)
Location: DES MOINES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Street flooding at NW 6TH and Aurora in Highland Park.  Rainfall was 1.5 inches.

Heavy Rain in POLK, IOWA
From 08-AUG-10 22:10:00 to 08-AUG-10 22:10:00 (CST-6)
Location: DES MOINES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Street flooding at 14th and Euclid.

Heavy Rain in POLK, IOWA
From 08-AUG-10 22:42:00 to 08-AUG-10 22:42:00 (CST-6)
Location: CLOVER HILLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Stranded cars at 86th and University.

Heavy Rain in GREENE, IOWA
From 08-AUG-10 20:00:00 to 08-AUG-10 23:03:00 (CST-6)
Location: JEFFERSON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since 2000 CST was 3.1 inches.

Heavy Rain in PALO ALTO, IOWA
From 08-AUG-10 21:00:00 to 08-AUG-10 21:00:00 (CST-6)
Location: EMMETSBURG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reports very heavy rain in Emmetsburg with water 3-4 inches deep on Highway 18.

Heavy Rain in POLK, IOWA
From 08-AUG-10 21:15:00 to 09-AUG-10 00:03:00 (CST-6)
Location: COMMERCE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 3.80 inches since 2115 CDT, 1.5 inches in the 45 minutes from 2315-2400.

Heavy Rain in JASPER, IOWA
From 09-AUG-10 01:30:00 to 09-AUG-10 01:30:00 (CST-6)
Location: NEWTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall since 2200 CST.

Heavy Rain in STORY, IOWA
From 08-AUG-10 23:00:00 to 09-AUG-10 04:05:00 (CST-6)
Location: NEVADA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain since 2300 CST was 3.80 inches.

Heavy Rain in POLK, IOWA
From 08-AUG-10 23:00:00 to 09-AUG-10 04:05:00 (CST-6)
Location: RIDER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Rainfall since midnight was 3.80 inches.

Heavy Rain in MONROE, IOWA
From 09-AUG-10 00:00:00 to 09-AUG-10 05:10:00 (CST-6)
Location: ALBIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Measured rainfall since midnight was 4.06 inches.  Standing water in yard.

Heavy Rain in POLK, IOWA
From 08-AUG-10 23:00:00 to 09-AUG-10 05:38:00 (CST-6)
Location: ALTOONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Since last evening, 3.04 inches of rain fell.

Heavy Rain in BOONE, IOWA
From 08-AUG-10 22:00:00 to 09-AUG-10 07:00:00 (CST-6)
Location: BOONE MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Overnight total was 4.71 inches.

Heavy Rain in WEBSTER, IOWA
From 09-AUG-10 07:02:00 to 09-AUG-10 07:02:00 (CST-6)
Location: GOWRIE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water over country roads with 3.50 inches of rainfall.

Flood in STORY, IOWA
From 09-AUG-10 07:49:00 to 09-AUG-10 19:30:00 (CST-6)
Location: CAMBRIDGE
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Significant flooding reported in the town of Cambridge.

Flash Flood in SAC, IOWA
From 08-AUG-10 20:00:00 to 09-AUG-10 04:44:00 (CST-6)
Location: LYTTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sac County law enforcement reports flooding over Highway 20 near Lytton.

Flash Flood in CARROLL, IOWA
From 08-AUG-10 21:15:00 to 08-AUG-10 23:54:00 (CST-6)
Location: CARROLL
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Three to four feet of standing water on city streets.

Flash Flood in CARROLL, IOWA
From 08-AUG-10 21:20:00 to 08-AUG-10 23:54:00 (CST-6)
Location: GLIDDEN
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

One and a half feet of slowly flowing water on streets in Glidden.

Flash Flood in GREENE, IOWA
From 08-AUG-10 21:32:00 to 08-AUG-10 23:54:00 (CST-6)
Location: RIPPEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter in Rippey reports fast flowing water about 6 inches deep in the streets. The city park was largely under water as well.

Flash Flood in GREENE, IOWA
From 08-AUG-10 21:45:00 to 09-AUG-10 03:00:00 (CST-6)
Location: RIPPEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water 3 to 4 inches deep in yards, water over curbs, city park and city ball field beginning to flood.

Flash Flood in BOONE, IOWA
From 09-AUG-10 00:17:00 to 09-AUG-10 07:30:00 (CST-6)
Location: ERICSON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water over Highway 17 north of Luther, water running into homes and over roads in Moingona in southern Boone County.

Flash Flood in POLK, IOWA
From 09-AUG-10 01:25:00 to 09-AUG-10 04:00:00 (CST-6)
Location: RIDER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Employee

Water flowing out of corn field and across south 19th St between Little Beaver and Highway 141.  Depth of flowing water was 6 to 8 inches.

Flash Flood in POLK, IOWA
From 09-AUG-10 01:59:00 to 09-AUG-10 04:00:00 (CST-6)
Location: WEST DES MOINES
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: County Official

Public Works Department in Des Moines and West Des Moines reports water over the road at Grand and 61st.

Flash Flood in DALLAS, IOWA
From 09-AUG-10 03:00:00 to 09-AUG-10 03:30:00 (CST-6)
Location: DALLAS CENTER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 44 just east of X Ave has running water over the road.  Moderate street flooding in Dallas Center.

Flash Flood in STORY, IOWA
From 09-AUG-10 03:41:00 to 09-AUG-10 07:30:00 (CST-6)
Location: AMES ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Airport road closed from Riverside to North Loop due to water over the road.

Flash Flood in POLK, IOWA
From 09-AUG-10 03:42:00 to 09-AUG-10 04:00:00 (CST-6)
Location: YOUNGSTOWN
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Polk County reports flash flooding in the 4300 block of Fairview near Dean Ave.  Flood waters washed away railroad tracks and caused a derailment.

Flash Flood in STORY, IOWA
From 09-AUG-10 03:42:00 to 09-AUG-10 07:30:00 (CST-6)
Location: IOWA CENTER
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Story County Sheriff reports water over the road on County Highway S27 just north of Maxwell, near the Rolling Hills Mobile Home Park.

Flash Flood in STORY, IOWA
From 09-AUG-10 03:42:00 to 09-AUG-10 07:30:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Story County Sheriff reports Highway 69 closed from Ames south to mile post 111 due to water over the road.

Flash Flood in BOONE, IOWA
From 09-AUG-10 04:03:00 to 09-AUG-10 06:30:00 (CST-6)
Location: BOONE
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Boone County law reports numerous roads flooded in town as well as flooding along old Highway 30 at Highway 17.

Flash Flood in STORY, IOWA
From 09-AUG-10 05:30:00 to 09-AUG-10 07:30:00 (CST-6)
Location: KELLEY
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Deep water flowing over the road from a field outside of Kelley and water reported over roads in Kelley.

Flash Flood in STORY, IOWA
From 09-AUG-10 04:30:00 to 09-AUG-10 07:30:00 (CST-6)
Location: CAMBRIDGE
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Over 5 inches of rain overnight with street flooding on Pearl Street.  Depth of water was up to the door on a pickup truck.

Heavy Rain in STORY, IOWA
From 08-AUG-10 23:39:00 to 08-AUG-10 23:39:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous roads flooded due to to poor drainage including South Dakota, Mortensen, and Lincoln Way.  Water to the undercarriages of cars with some stalled.

Heavy Rain in POLK, IOWA
From 08-AUG-10 22:30:00 to 09-AUG-10 01:30:00 (CST-6)
Location: WINDSOR HGTS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall over the past 4 hours was 4.10 inches.

Flash Flood in DALLAS, IOWA
From 08-AUG-10 22:33:00 to 09-AUG-10 03:30:00 (CST-6)
Location: WAUKEE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Four to six inches of water over Highway 6 at Highway R22.

Flash Flood in WAPELLO, IOWA
From 09-AUG-10 09:00:00 to 09-AUG-10 10:00:00 (CST-6)
Location: AGENCY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Resident had knee deep water on his property that runs off from the farm land near his home.  He said it usually is retained by terraces and trenches in the fields but they were not able to keep up.

Lightning in BLACK HAWK, IOWA
From 08-AUG-10 22:45:00 to 08-AUG-10 22:45:00 (CST-6)
Location: CEDAR FALLS
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning in CARROLL, IOWA
From 08-AUG-10 20:00:00 to 08-AUG-10 20:00:00 (CST-6)
Location: CARROLL
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm Wind in BUTLER, IOWA
From 08-AUG-10 21:45:00 to 08-AUG-10 21:45:00 (CST-6)
Location: BRISTOW
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds blew trees down in Bristow, snapping trees.

Thunderstorm Wind in FRANKLIN, IOWA
From 08-AUG-10 21:25:00 to 08-AUG-10 21:25:00 (CST-6)
Location: HAMPTON
Magnitude: 57.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds from a thunderstorms downed 14 trees, many uprooted.

Flash Flood in MAHASKA, IOWA
From 09-AUG-10 05:30:00 to 09-AUG-10 09:00:00 (CST-6)
Location: LAKONTA
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: SHAVE Project

Flooding of fields has occurred due to local stream overflowing its banks by as much as three-quarters of a mile. Numerous streets flooded due to ditches overflowing their banks. Some of the streets had 6 to 8 inches of rushing water over them. 310th street was closed just to the northeast of Bussey due to flooding.

Flash Flood in POLK, IOWA
From 09-AUG-10 01:15:00 to 09-AUG-10 06:00:00 (CST-6)
Location: WINDSOR HGTS
Flood cause: Heavy Rain
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Newspaper

Four lower level basement units in an eight unit apartment building were inundated with water and three houses nearby on NW 75th Street were damaged due to fast rising flood waters from North Walnut Creek. Water was chest deep in one apartment with firefighters having to break into apartments with an axe. Water was knee to waist high in the yard of one of the houses. The creek came up in roughly 45 minutes. The nearby Walnut Creek had a record crest early the morning of the 9th.

Funnel Cloud in CARROLL, IOWA
From 08-AUG-10 19:50:00 to 08-AUG-10 19:50:00 (CST-6)
Location: TEMPLETON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Brief funnel clouds forming and dissipating.

Thunderstorm Wind in SAC, IOWA
From 08-AUG-10 19:05:00 to 08-AUG-10 19:05:00 (CST-6)
Location: SCHALLER
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Small branches were down as well as other damage to power lines.

Heavy Rain in JASPER, IOWA
From 08-AUG-10 22:00:00 to 09-AUG-10 03:58:00 (CST-6)
Location: NEWTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rain since 2200 CST was 4.05 inches.