A low pressure area tracked east out of South Dakota during the afternoon and evening.  A warm front extending from the low across west central into southeast Iowa lifted north with thunderstorm development during the afternoon.  Thunderstorms formed during the late afternoon and overnight hours as the cold front trailing form the low moved into Iowa  The atmosphere became moderately unstable during the afternoon and evening as moisture continued to pool near the warm front and ahead of the low.  Precipitable water values increased to 1.8 inches by evening.  The CAPE increased to 2000 to 3000 J/kg with 600 to 900 J/kg available in the -10 to -30 C layer of the atmosphere, though the freezing level was quite high at 15,000 feet.  Downdraft CAPE was in the 800 to 1000 J/kg range.  The atmosphere had 40 to 50 kts of shear available. Thunderstorms moved into western Iowa and became severe.  Initially the storms produced hail.  Most of the hail was in the 1 to 1.5 inch range, with a few locations approaching 2 inch diameter hail.  Upscale development took place with the storms developing into an MCC before midnight.  The storms then became producers of high high winds and heavy rainfall.  A 67 MPH wind gust was recorded in the Carroll area.  One storm west of Pocahontas produced a 2 mile long narrow path of damage as microburst winds estimated around 90 MPH damaged several houses.  Roofing was lost with debris embedded in exterior walls.  Farm equipment was also blown over.  Flash flooding took place in west central Iowa and parts of central Iowa as reports of 3 to 7 inches of rain in some locations produced flash flooding.  Many highways were closed by high water, and countless county roads were flooded in Carroll, Guthrie, Greene, and Madison Counties.  Subsequent flooding in Madison County caused considerable damage with several bridges washed out or underwater northwest of Bevington.

Thunderstorm Wind in POCAHONTAS, IOWA
From 14-JUN-13 21:00:00 to 14-JUN-13 21:00:00 (CST-6)
Location: WARE
Magnitude: 56.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Damage to machinery buildings with one blown over and two others damaged.

Hail in ADAIR, IOWA
From 14-JUN-13 20:05:00 to 14-JUN-13 20:05:00 (CST-6)
Location: HOWE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Emergency Manager

Hail in GUTHRIE, IOWA
From 14-JUN-13 20:49:00 to 14-JUN-13 20:49:00 (CST-6)
Location: MONTEITH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Hail in GREENE, IOWA
From 14-JUN-13 19:37:00 to 14-JUN-13 19:37:00 (CST-6)
Location: SCRANTON
Magnitude: 2.00 
Property damage: 15.00K
Crop damage: 15.00K
Reported by: Broadcast Media

Hail in MADISON, IOWA
From 14-JUN-13 20:56:00 to 14-JUN-13 20:56:00 (CST-6)
Location: WINTERSET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: COOP Observer

Hail in WARREN, IOWA
From 14-JUN-13 22:03:00 to 14-JUN-13 22:03:00 (CST-6)
Location: ST MARYS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Hail in CARROLL, IOWA
From 14-JUN-13 19:17:00 to 14-JUN-13 19:17:00 (CST-6)
Location: DEDHAM
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 10.00K
Reported by: SHAVE Project

Hail in CARROLL, IOWA
From 14-JUN-13 19:24:00 to 14-JUN-13 19:24:00 (CST-6)
Location: COON RAPIDS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Fire Department/Rescue

Flash Flood in CARROLL, IOWA
From 14-JUN-13 20:58:00 to 15-JUN-13 02:30:00 (CST-6)
Location: COON RAPIDS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: State Official

Water was over A Avenue along the Guthrie/Carroll County line.

Thunderstorm Wind in MADISON, IOWA
From 14-JUN-13 22:01:00 to 14-JUN-13 22:01:00 (CST-6)
Location: MACKSBURG
Magnitude: 54.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds gusts estimated at 60 to 65 MPH.

Thunderstorm Wind in POCAHONTAS, IOWA
From 14-JUN-13 21:17:00 to 14-JUN-13 21:17:00 (CST-6)
Location: WARE
Magnitude: 78.00 EG
Property damage: 250.00K
Crop damage: 20.00K
Reported by: Law Enforcement

Damage to several houses, including the loss of roofing and debris embedded in exterior walls.  Farm equipment blown over.  Damage occurred in a fairly narrow two mile long path.

Heavy Rain in CARROLL, IOWA
From 14-JUN-13 21:30:00 to 14-JUN-13 21:30:00 (CST-6)
Location: COON RAPIDS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Rainfall of 5.2 inches in past few hours.

Flash Flood in CARROLL, IOWA
From 14-JUN-13 21:34:00 to 15-JUN-13 02:30:00 (CST-6)
Location: COON RAPIDS
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Public

Water over Highway 141 west of Coon Rapids.

Hail in CARROLL, IOWA
From 14-JUN-13 19:19:00 to 14-JUN-13 19:19:00 (CST-6)
Location: DEDHAM
Magnitude: 1.50 
Property damage: 5.00K
Crop damage: 10.00K
Reported by: SHAVE Project

Hail in ADAIR, IOWA
From 14-JUN-13 20:10:00 to 14-JUN-13 20:10:00 (CST-6)
Location: HOWE
Magnitude: 1.50 
Property damage: 5.00K
Crop damage: 10.00K
Reported by: Broadcast Media

Just southeast of Menlo.  Report received via KCCI TV.

Thunderstorm Wind in CARROLL, IOWA
From 14-JUN-13 20:35:00 to 14-JUN-13 20:35:00 (CST-6)
Location: CARROLL NEU ARPT
Magnitude: 58.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: AWOS

Hail in GUTHRIE, IOWA
From 14-JUN-13 20:10:00 to 14-JUN-13 20:10:00 (CST-6)
Location: STUART
Magnitude: 1.00 
Property damage: 2.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Hail in GUTHRIE, IOWA
From 14-JUN-13 20:14:00 to 14-JUN-13 20:14:00 (CST-6)
Location: MENLO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Hail in CARROLL, IOWA
From 14-JUN-13 19:40:00 to 14-JUN-13 19:40:00 (CST-6)
Location: COON RAPIDS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Flash Flood in MADISON, IOWA
From 14-JUN-13 23:02:00 to 15-JUN-13 00:30:00 (CST-6)
Location: PATTERSON
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 92 between Patterson and Bevington was flooded.

Thunderstorm Wind in GUTHRIE, IOWA
From 14-JUN-13 21:45:00 to 14-JUN-13 21:45:00 (CST-6)
Location: STUART
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several 6 to 8 inch tree limbs blown down.

Flash Flood in GUTHRIE, IOWA
From 14-JUN-13 21:12:00 to 15-JUN-13 02:30:00 (CST-6)
Location: BAYARD
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six to eight inches of water over several streets in Bayard.  Water over the underpass of Highway 25 in Bayard.

Flood in MADISON, IOWA
From 15-JUN-13 09:10:00 to 15-JUN-13 21:00:00 (CST-6)
Location: PATTERSON
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 25.00K
Reported by: Law Enforcement

Large sections of Cumming Highway underwater and a number of county bridges either washed out or underwater.

Thunderstorm Wind in CARROLL, IOWA
From 14-JUN-13 20:21:00 to 14-JUN-13 20:21:00 (CST-6)
Location: CARROLL
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in CARROLL, IOWA
From 14-JUN-13 19:22:00 to 14-JUN-13 19:22:00 (CST-6)
Location: DEDHAM
Magnitude: 1.25 
Property damage: 2.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Hail in GUTHRIE, IOWA
From 14-JUN-13 19:33:00 to 14-JUN-13 19:33:00 (CST-6)
Location: BAYARD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Emergency Manager

Hail in AUDUBON, IOWA
From 14-JUN-13 19:10:00 to 14-JUN-13 19:10:00 (CST-6)
Location: VIOLA CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Hail in GREENE, IOWA
From 14-JUN-13 19:45:00 to 14-JUN-13 19:45:00 (CST-6)
Location: SCRANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Amateur Radio

Hail in AUDUBON, IOWA
From 14-JUN-13 19:18:00 to 14-JUN-13 19:18:00 (CST-6)
Location: VIOLA CENTER
Magnitude: 1.25 
Property damage: 1.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Hail in CARROLL, IOWA
From 14-JUN-13 20:00:00 to 14-JUN-13 20:00:00 (CST-6)
Location: RALSTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Law Enforcement

Hail in CARROLL, IOWA
From 14-JUN-13 19:26:00 to 14-JUN-13 19:26:00 (CST-6)
Location: DEDHAM
Magnitude: 1.25 
Property damage: 2.00K
Crop damage: 10.00K
Reported by: SHAVE Project

Hail in GREENE, IOWA
From 14-JUN-13 19:54:00 to 14-JUN-13 19:54:00 (CST-6)
Location: JEFFERSON
Magnitude: 1.00 
Property damage: 3.00K
Crop damage: 5.00K
Reported by: COOP Observer

White core with clear ice around the edge.

Hail in AUDUBON, IOWA
From 14-JUN-13 19:30:00 to 14-JUN-13 19:30:00 (CST-6)
Location: VIOLA CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Thunderstorm Wind in CLARKE, IOWA
From 14-JUN-13 22:11:00 to 14-JUN-13 22:11:00 (CST-6)
Location: MURRAY
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reports a couple trees split, power lines down from falling branches, and an 8 by 12 foot section of a roof was damaged on a home in Murray. Some three inch or larger diameter branches down.

Thunderstorm Wind in POCAHONTAS, IOWA
From 14-JUN-13 21:00:00 to 14-JUN-13 21:00:00 (CST-6)
Location: WARE
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several machine sheds blown over in the Ware area by high winds.

Hail in CARROLL, IOWA
From 14-JUN-13 19:55:00 to 14-JUN-13 19:55:00 (CST-6)
Location: DEDHAM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Hail in GREENE, IOWA
From 14-JUN-13 20:26:00 to 14-JUN-13 20:26:00 (CST-6)
Location: JEFFERSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Thunderstorm Wind in POCAHONTAS, IOWA
From 14-JUN-13 21:00:00 to 14-JUN-13 21:00:00 (CST-6)
Location: WARE
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

In the town of Ware, shingles were blown off of a roof with trees damaged.

Hail in AUDUBON, IOWA
From 14-JUN-13 19:10:00 to 14-JUN-13 19:10:00 (CST-6)
Location: ROSS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 5.00K
Reported by: SHAVE Project

Thunderstorm Wind in CARROLL, IOWA
From 14-JUN-13 20:40:00 to 14-JUN-13 20:40:00 (CST-6)
Location: HALBUR
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two to six inch diameter limbs blown down and a garage roof blown off.

Hail in CARROLL, IOWA
From 14-JUN-13 19:28:00 to 14-JUN-13 19:28:00 (CST-6)
Location: RALSTON
Magnitude: 1.25 
Property damage: 2.00K
Crop damage: 5.00K
Reported by: Trained Spotter