The weather situation during the afternoon was similar to that had taken place in the morning with the exception that the convection in the afternoon was ahead of the cold front instead of the warm front.  The upper air pattern remained very dynamic with a powerful upper level jet stream punching into Iowa.  The airmass was very unstable.  Thunderstorms erupted quite rapidly during the early afternoon hours to the west of Iowa.  They moved into the state during the early afternoon with several reports of tornadoes in the far west.  The storms weakened somewhat before entering the Des Moines CWA.  They took on the form of a line echo wave pattern as they headed across the state.  Portions of the line bowed out and produced high winds in many areas.  Indeed, high winds was the main severe threat with this line as it raced across the state.  There were numerous reports of trees and power lines downed by the high winds.  Gusts to around 80 MPH swept into Cass County as the line moved through.  Fortunately, this gust occurred in largely open area.  The storms caused more structural damage as they headed into the more populated central Iowa counties.  High winds damaged a farmstead in Story County south of Collins.  Another farmstead north of Collins sustained damage to a barn and part of the house.  As the storms progressed east, high winds flattened a barn and broke windows out of a house southwest of State Center in Marshall County.  A tornado dropped out of the storm as it moved across Marshall County as well.  The track was intermittent, but the tornado did cause damage to at least two farmsteads along its path.  Another storm produced a brief tornado touchdown in Tama County.  The tornado did little damage, but did manage to hit and knock over a couple of transformers east of Garwin.  There was little hail reported with the storms, however one inch diameter hail was reported in Grundy County as Dike.  As the thunderstorms moved through the Calhoun County area, lightning struck a gas meter on a house in Farnhamville.  The lightning blew out the gas meter, melted the phones in the home, and caused some structural damage to the building itself.

Thunderstorm Wind in MARSHALL, IOWA
From 13-JUN-00 17:55:00 to 13-JUN-00 17:55:00 (CST)
Location: STATE CENTER
Magnitude: 69 E
Property damage: 75K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in HARDIN, IOWA
From 13-JUN-00 18:12:00 to 13-JUN-00 18:12:00 (CST)
Location: IOWA FALLS
Magnitude: 52 E
Property damage: 5K
Reported by: TRAINED SPOTTER

Tornado in TAMA, IOWA
From 13-JUN-00 18:37:00 to 13-JUN-00 18:37:00 (CST)
Location: GARWIN
Tornado F-scale: F0
Property damage: 10K
Reported by: AMATEUR RADIO

Brief touchdown

Hail in GRUNDY, IOWA
From 13-JUN-00 18:40:00 to 13-JUN-00 18:40:00 (CST)
Location: DIKE
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in MAHASKA, IOWA
From 13-JUN-00 19:10:00 to 13-JUN-00 19:10:00 (CST)
Location: NEW SHARON
Magnitude: 56 E
Property damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in GRUNDY, IOWA
From 13-JUN-00 18:15:00 to 13-JUN-00 18:15:00 (CST)
Location: CONRAD
Magnitude: 50 E
Property damage: 10K
Reported by: NEWSPAPER

Thunderstorm Wind in HARDIN, IOWA
From 13-JUN-00 18:20:00 to 13-JUN-00 18:20:00 (CST)
Location: ELDORA
Magnitude: 61 E
Property damage: 25K
Crop damage: 2K
Reported by: NEWSPAPER

Lightning in CALHOUN, IOWA
From 13-JUN-00 17:55:00 to 13-JUN-00 17:55:00 (CST)
Location: FARNHAMVILLE
Property damage: 5K
Reported by: NEWSPAPER

Thunderstorm Wind in DAVIS, IOWA
From 13-JUN-00 19:35:00 to 13-JUN-00 19:35:00 (CST)
Location: FLORIS
Magnitude: 61 E
Property damage: 35K
Crop damage: 5K
Reported by: NEWSPAPER

Thunderstorm Wind in ADAIR, IOWA
From 13-JUN-00 16:30:00 to 13-JUN-00 16:30:00 (CST)
Location: BRIDGEWATER
Magnitude: 61 E
Property damage: 15K
Reported by: NEWSPAPER

Thunderstorm Wind in WEBSTER, IOWA
From 13-JUN-00 16:19:00 to 13-JUN-00 16:19:00 (CST)
Location: FT DODGE
Magnitude: 52 E
Property damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in WEBSTER, IOWA
From 13-JUN-00 16:21:00 to 13-JUN-00 16:21:00 (CST)
Location: FT DODGE
Magnitude: 56 M
Property damage: 25K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in CASS, IOWA
From 13-JUN-00 16:29:00 to 13-JUN-00 16:29:00 (CST)
Location: CUMBERLAND
Magnitude: 69 E
Property damage: 5K
Crop damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in ADAIR, IOWA
From 13-JUN-00 16:40:00 to 13-JUN-00 16:40:00 (CST)
Location: BRIDGEWATER
Magnitude: 50 E
Property damage: 1K
Reported by: FIRE DEPT/RESCUE SQUAD

Thunderstorm Wind in ADAIR, IOWA
From 13-JUN-00 16:50:00 to 13-JUN-00 16:50:00 (CST)
Location: GREENFIELD
Magnitude: 50 E
Property damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:24:00 to 13-JUN-00 17:24:00 (CST)
Location: AMES
Magnitude: 52 E
Property damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:30:00 to 13-JUN-00 17:30:00 (CST)
Location: AMES
Magnitude: 50 M
Property damage: 1K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:30:00 to 13-JUN-00 17:30:00 (CST)
Location: NEVADA
Magnitude: 52 E
Property damage: 3K
Reported by: AMATEUR RADIO

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 17:30:00 to 13-JUN-00 17:30:00 (CST)
Location: URBANDALE
Magnitude: 52 E
Property damage: 5K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in PALO ALTO, IOWA
From 13-JUN-00 15:50:00 to 13-JUN-00 15:50:00 (CST)
Location: EMMETSBURG
Magnitude: 56 E
Property damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in PALO ALTO, IOWA
From 13-JUN-00 15:55:00 to 13-JUN-00 15:55:00 (CST)
Location: DEPEW
Magnitude: 65 E
Property damage: 50K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in KOSSUTH, IOWA
From 13-JUN-00 16:10:00 to 13-JUN-00 16:10:00 (CST)
Location: FENTON
Magnitude: 52 E
Property damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in ADAMS, IOWA
From 13-JUN-00 16:15:00 to 13-JUN-00 16:15:00 (CST)
Location: LINCOLN CENTER
Magnitude: 52 E
Property damage: 2K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in HAMILTON, IOWA
From 13-JUN-00 17:35:00 to 13-JUN-00 17:35:00 (CST)
Location: JEWELL
Magnitude: 61 E
Property damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:43:00 to 13-JUN-00 17:43:00 (CST)
Location: COLO
Magnitude: 52 E
Property damage: 2K
Reported by: AMATEUR RADIO

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:43:00 to 13-JUN-00 17:43:00 (CST)
Location: MAXWELL
Magnitude: 52 E
Property damage: 2K
Reported by: AMATEUR RADIO

Thunderstorm Wind in PALO ALTO, IOWA
From 13-JUN-00 15:35:00 to 13-JUN-00 15:35:00 (CST)
Location: AYRSHIRE
Magnitude: 52 E
Property damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:44:00 to 13-JUN-00 17:44:00 (CST)
Location: COLLINS
Magnitude: 69 E
Property damage: 10K
Crop damage: 1K
Reported by: AMATEUR RADIO

Tornado in MARSHALL, IOWA
From 13-JUN-00 17:44:00 to 13-JUN-00 18:00:00 (CST)
Location: STATE CENTER
Tornado F-scale: F1
Property damage: 150K
Crop damage: 5K
Reported by: FIRE DEPT/RESCUE SQUAD

Intermittent track

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 17:50:00 to 13-JUN-00 17:50:00 (CST)
Location: COLLINS
Magnitude: 74 E
Property damage: 100K
Crop damage: 5K
Reported by: EMERGENCY MANAGER