A cold front from Lake Superior across northwest Iowa coupled with an upper level low over southwest Ontario with an associated short wave dropping across southern Minnesota sparked the development of thunderstorms during the afternoon and evening of July 24.  Severe storms producing copious amounts of large hail up to the size of a tennis ball and damaging wind gusts between 60 and 90 mph were common.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:37:00 to 24-JUL-09 18:37:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter to half dollar-sized hail fell just north northwest of Independence, IA around 737 pm July 24.

Hail in JACKSON, IOWA
From 24-JUL-09 19:24:00 to 24-JUL-09 19:24:00 (CST-6)
Location: MILES
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, IOWA
From 24-JUL-09 19:24:00 to 24-JUL-09 19:24:00 (CST-6)
Location: CENTER PT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail the size of a quarter fell in Center Point, IA around 824 pm July 24.  This report was relayed by the Linn County EMA.

Hail in BENTON, IOWA
From 24-JUL-09 19:35:00 to 24-JUL-09 19:35:00 (CST-6)
Location: VINTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a quarter fell 1 mile southeast of Vinton, IA around 835 pm July 24.

Hail in SCOTT, IOWA
From 24-JUL-09 20:33:00 to 24-JUL-09 20:33:00 (CST-6)
Location: DAVENPORT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in IOWA, IOWA
From 24-JUL-09 20:40:00 to 24-JUL-09 20:40:00 (CST-6)
Location: MILLERSBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in DUBUQUE, IOWA
From 24-JUL-09 17:46:00 to 24-JUL-09 17:46:00 (CST-6)
Location: DUBUQUE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail the size of a quarter fell 2 miles northeast of Dubuque, IA at 646 pm July 24.

Hail in DUBUQUE, IOWA
From 24-JUL-09 17:38:00 to 24-JUL-09 17:38:00 (CST-6)
Location: DUBUQUE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail the size of a golf ball fell on the Highway 151 bridge into Wisconsin at 638 pm July 24.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:10:00 to 24-JUL-09 18:10:00 (CST-6)
Location: HAZLETON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a ping pong ball fell in Hazelton, IA around 710 pm July 24.

Thunderstorm Wind in JONES, IOWA
From 24-JUL-09 18:30:00 to 24-JUL-09 18:30:00 (CST-6)
Location: STONE CITY
Magnitude: 65.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated to be 75 mph blew down or uprooted some large trees and ripped the roof off a metal barn about 8 miles west southwest of Monticello, IA around 730 pm July 24.  This report was relayed by a spotter network.

Thunderstorm Wind in BUCHANAN, IOWA
From 24-JUL-09 18:30:00 to 24-JUL-09 18:30:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wind gusts estimated to be 75 mph blew a 50 foot tall grain bin over and snapped off some 5 to 8 inch diameter tree limbs about 3 miles north northeast of Independence, IA around 730 pm July 24.

Thunderstorm Wind in BUCHANAN, IOWA
From 24-JUL-09 18:35:00 to 24-JUL-09 18:35:00 (CST-6)
Location: INDEPENDENCE ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 mph in Independence, IA around 735 pm July 24.

Thunderstorm Wind in BUCHANAN, IOWA
From 24-JUL-09 18:45:00 to 24-JUL-09 18:45:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 to 80 mph blew down several 2 to 3 foot diameter trees in Independence, IA around 745 pm July 24.  One tree fell onto a house on Terrace Drive.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:28:00 to 24-JUL-09 13:28:00 (CST-6)
Location: DELAWARE
Magnitude: 1.75 
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a golf ball fell in Delaware, IA around 228 pm July 24.  Extensive crop damage was observed along Highway 20 from 1 mile west of the Delaware exit to 2 miles east of the Earlville exit.  An exit sign was also damaged.  A trained spotter also contributed to this report.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:28:00 to 24-JUL-09 13:28:00 (CST-6)
Location: GREELEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a golf ball fell in Greeley, IA around 228 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:28:00 to 24-JUL-09 13:28:00 (CST-6)
Location: ONEIDA
Magnitude: 1.75 
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a golf ball fell in about 2 miles north of Delaware, IA around 228 pm July 24.  Several houses near Highway 38 just north of town sustained broken windows and siding damage due to the hail.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:27:00 to 24-JUL-09 18:27:00 (CST-6)
Location: AURORA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:34:00 to 24-JUL-09 18:34:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail the size of a quarter fell in Independence, IA around 734 pm July 24.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:35:00 to 24-JUL-09 18:35:00 (CST-6)
Location: INDEPENDENCE ARPT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail the size of a half dollar fell near Independence, IA around 735 pm July 24.

Thunderstorm Wind in JACKSON, IOWA
From 24-JUL-09 18:50:00 to 24-JUL-09 18:50:00 (CST-6)
Location: BELLEVUE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 75 mph blew down several trees in Bellevue, IA around 750 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:29:00 to 24-JUL-09 13:29:00 (CST-6)
Location: GREELEY
Magnitude: 2.50 
Property damage: 0.25K
Crop damage: 0.00K
Reported by: Public

Copious amounts of hail the size of a tennis ball fell about 3 miles northwest of Oneida, IA around 229 pm July 24.  The hail cracked the windshield of a car.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:36:00 to 24-JUL-09 13:36:00 (CST-6)
Location: EARLVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a quarter fell in Earlville, IA around 236 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:40:00 to 24-JUL-09 13:45:00 (CST-6)
Location: EARLVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell for five minutes covering the ground in Earlville, IA around 245 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:55:00 to 24-JUL-09 13:55:00 (CST-6)
Location: HOPKINTON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a ping pong ball fell about 5 miles northeast of Hopkinton, IA around 255 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:58:00 to 24-JUL-09 13:58:00 (CST-6)
Location: DELHI
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a golf ball fell about 5 miles north of Hopkinton, IA around 258 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 14:00:00 to 24-JUL-09 14:00:00 (CST-6)
Location: HOPKINTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny to quarter-sized hail covered the ground about 3 miles north of Hopkinton, IA around 300 pm July 24.

Hail in DUBUQUE, IOWA
From 24-JUL-09 14:15:00 to 24-JUL-09 14:15:00 (CST-6)
Location: CASCADE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Pea to quarter-sized hail covered the ground in Cascade, IA around 315 pm July 24.

Thunderstorm Wind in DELAWARE, IOWA
From 24-JUL-09 18:00:00 to 24-JUL-09 18:00:00 (CST-6)
Location: EDGEWOOD
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 75 mph blew a roof off a building in Edgewood, IA around 700 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:20:00 to 24-JUL-09 14:05:00 (CST-6)
Location: EDGEWOOD
Magnitude: 2.50 
Property damage: 0.00K
Reported by: Emergency Manager

Golf ball to tennis ball sized hail fell in about a 10 mile wide swath across Delaware County from about 220 pm to 305 pm July 24.  The hail swath extended from just west of Edgewood, IA southeast to about 2.6 miles east northeast of Sand Springs, IA.  The copious amounts of large hail caused extensive crop damage.

Hail in DUBUQUE, IOWA
From 24-JUL-09 14:15:00 to 24-JUL-09 14:15:00 (CST-6)
Location: CASCADE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in BUCHANAN, IOWA
From 24-JUL-09 18:00:00 to 24-JUL-09 18:00:00 (CST-6)
Location: FONTANA COUNTY PARK
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 75 mph snapped off or uprooted numerous 1 to 2 foot trees along Highway 150 from approximately 140th Street to 170th Street south of Hazelton, IA around 700 pm July 24.

Thunderstorm Wind in DELAWARE, IOWA
From 24-JUL-09 18:01:00 to 24-JUL-09 18:01:00 (CST-6)
Location: EDGEWOOD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wind gusts estimated to be 75 mph blew down some large trees 1 mile west southwest of Edgewood, IA around 701 pm July 24.

Thunderstorm Wind in DELAWARE, IOWA
From 24-JUL-09 18:01:00 to 24-JUL-09 18:01:00 (CST-6)
Location: EDGEWOOD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Wind gusts were estimated to be 75 mph 1 mile west southwest of Edgewood, IA  around 701 pm July 24.

Thunderstorm Wind in BUCHANAN, IOWA
From 24-JUL-09 18:15:00 to 24-JUL-09 18:15:00 (CST-6)
Location: HAZLETON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 75 mph snapped a grove of large pine trees in half in the Hazelton, IA area around 715 pm July 24.

Thunderstorm Wind in DUBUQUE, IOWA
From 24-JUL-09 17:36:00 to 24-JUL-09 17:36:00 (CST-6)
Location: CENTER GROVE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 mph in Dubuque, IA around 636 pm July 24.

Thunderstorm Wind in DUBUQUE, IOWA
From 24-JUL-09 17:38:00 to 24-JUL-09 17:38:00 (CST-6)
Location: CENTER GROVE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 65 mph at the Kennedy Mall in Dubuque, IA around 638 pm July 24.

Thunderstorm Wind in DUBUQUE, IOWA
From 24-JUL-09 17:40:00 to 24-JUL-09 17:40:00 (CST-6)
Location: ASBURY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 mph blew some 3 to 4 inch diameter tree limbs down about 3 miles west of Dubuque, IA around 640 pm July 24.

Thunderstorm Wind in BENTON, IOWA
From 24-JUL-09 19:41:00 to 24-JUL-09 19:41:00 (CST-6)
Location: NORWAY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated to be 65 mph in Norway, IA around 841 pm July 24.  This report was relayed by KCRG.

Thunderstorm Wind in CLINTON, IOWA
From 24-JUL-09 19:52:00 to 24-JUL-09 19:52:00 (CST-6)
Location: CLINTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 50 to 60 mph 3 miles northeast of Clinton, IA around 852 pm July 24.

Thunderstorm Wind in JOHNSON, IOWA
From 24-JUL-09 20:00:00 to 24-JUL-09 20:00:00 (CST-6)
Location: CORALVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 65 mph blew down a 6 inch diameter tree near the Scottsdale Apartment complex in Coralville, IA around 900 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:21:00 to 24-JUL-09 13:21:00 (CST-6)
Location: EDGEWOOD
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail the size of a golf ball fell in Edgewood, IA around 221 pm July 24.  Some residences had windows broken due to the hail.

Thunderstorm Wind in SCOTT, IOWA
From 24-JUL-09 20:14:00 to 24-JUL-09 20:14:00 (CST-6)
Location: DAVENPORT ARPT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Wind gusts estimated to be 70 mph blew down several large tree limbs at the National Weather Service Office in Davenport, IA and surrounding Davenport Municipal Airport grounds around 914 pm July 24.

Thunderstorm Wind in MUSCATINE, IOWA
From 24-JUL-09 20:15:00 to 24-JUL-09 20:15:00 (CST-6)
Location: PLEASANT PRAIRIE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Wind gusts estimated to be 65 mph blew down a large tree limb about 5 miles northwest of Montpelier, IA around 915 pm July 24.

Hail in DELAWARE, IOWA
From 24-JUL-09 13:25:00 to 24-JUL-09 13:25:00 (CST-6)
Location: ONEIDA
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Large hail estimated to be golf ball-size fell about 1 mile west of Oneida, IA at the Kleusner farm around 225 pm July 24.  The siding of the residence, garage, and other buildings were heavily damaged.  The wind driven large hail also broke several windows of both the house and vehicles.

Thunderstorm Wind in DELAWARE, IOWA
From 24-JUL-09 13:40:00 to 24-JUL-09 13:40:00 (CST-6)
Location: EARLVILLE
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 70 mph blew a tree down near the intersection of Stow Street and Prospect Street in Earlville, IA around 240 pm July 24.  In addition, a tree fell onto the Orcutt residence.

Thunderstorm Wind in JONES, IOWA
From 24-JUL-09 18:50:00 to 24-JUL-09 18:50:00 (CST-6)
Location: ANAMOSA
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 75 mph blew down some large trees on Buffalo Road just west of Anamosa, IA around 750 pm July 24.  One tree fell onto a house.

Thunderstorm Wind in JACKSON, IOWA
From 24-JUL-09 19:00:00 to 24-JUL-09 19:00:00 (CST-6)
Location: PRESTON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 75 mph blew down several trees between Preston, IA and Highway 52 around 800 pm July 24.

Thunderstorm Wind in CEDAR, IOWA
From 24-JUL-09 19:25:00 to 24-JUL-09 19:25:00 (CST-6)
Location: STANWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 mph in Stanwood, IA around 825 pm July 24.  A power outage was also observed.

Thunderstorm Wind in LINN, IOWA
From 24-JUL-09 19:38:00 to 24-JUL-09 19:38:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 70 mph in Cedar Rapids, IA around 838 pm July 24.  This report was relayed by KGAN.

Thunderstorm Wind in LINN, IOWA
From 24-JUL-09 19:39:00 to 24-JUL-09 19:39:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 65 mph 1 mile south southeast of Cedar Rapids, IA around 839 pm July 24.

Thunderstorm Wind in CLINTON, IOWA
From 24-JUL-09 20:00:00 to 24-JUL-09 20:00:00 (CST-6)
Location: GRAND MOUND
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 70 mph blew down several large tree limbs in Grand Mound, IA around 900 pm July 24.

Thunderstorm Wind in CLINTON, IOWA
From 24-JUL-09 20:00:00 to 24-JUL-09 20:00:00 (CST-6)
Location: CALAMUS
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 70 mph blew down several trees and utility poles in Calamus, IA around 900 pm July 24.

Thunderstorm Wind in CLINTON, IOWA
From 24-JUL-09 20:00:00 to 24-JUL-09 20:00:00 (CST-6)
Location: DEWITT
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 70 mph blew down several trees and utility poles in De Witt, IA around 900 pm July 24.

Thunderstorm Wind in SCOTT, IOWA
From 24-JUL-09 20:25:00 to 24-JUL-09 20:25:00 (CST-6)
Location: DAVENPORT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 to 70 mph at the Federal Building in downtown Davenport, IA around 925 pm July 24.

Flash Flood in LINN, IOWA
From 24-JUL-09 19:43:00 to 24-JUL-09 20:30:00 (CST-6)
Location: CEDAR RAPIDS AIRPARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in some flash flooding of some streets about 3 miles north northwest of Cedar Rapids, IA around 843 pm July 24.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:30:00 to 24-JUL-09 18:30:00 (CST-6)
Location: HAZLETON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail at least quarter-sized fell just southeast of Hazelton, IA around 730 pm July 24.  Some area crops appeared to have sustained some hail damage.

Hail in BUCHANAN, IOWA
From 24-JUL-09 18:30:00 to 24-JUL-09 18:30:00 (CST-6)
Location: INDEPENDENCE
Magnitude: 1.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail at least quarter-sized fell about 3 miles north northeast of Independence, IA around 730 pm July 24.  One residence sustained hail damage to the siding.

Flash Flood in SCOTT, IOWA
From 24-JUL-09 20:45:00 to 24-JUL-09 22:00:00 (CST-6)
Location: DAVENPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rains resulted in some flash flooding of Harrison St in downtown Davenport, IA around 945 pm July 24.

Thunderstorm Wind in CLINTON, IOWA
From 24-JUL-09 19:40:00 to 24-JUL-09 19:40:00 (CST-6)
Location: WELTON
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 70 mph blew down several trees and utility poles in Welton, IA around 840 pm July 24.