A very dynamic situation took shape over Iowa as an unseasonably strong upper level trough of low pressure punched southeast into the state.  Deep tropical moisture was in place at the time with surface dew points in the upper 60s to mid 70s across the region.  Several rounds of convection had taken place across the state during previous days, leaving several boundaries in place.  One of the boundaries merged with an east-west warm frontal system over southern Iowa.  Thunderstorms erupted during the morning hours.  These storms brought a round of high winds and some hail to central into northeast Iowa.  Hail was not that large with the storms with most reports under one inch in diameter.  Gusty winds were widespread however.  Winds of 60 to 75 MPH were fairly common from Des Moines, northeast into the Waterloo area.  There were numerous reports of trees down.  Structural damage occurred on a maintenance garage in Des Moines as 60 to 70 MPH winds blew through.  High winds also took down high tension lines in the Ankeny area.  Farther to the north, a semi-tractortrailer truck was blown off a highway in Marshall County.  The storms continued northeast into the Waterloo area, causing power outages and downed trees in the metropolitan area.  As the storms moved through Jasper County, lightning struck a driver education car in the town of Newton.  Though nobody was injured, three of the cars tires were blown out and damage was done to the engine by the lightning strike.

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:14:00 to 13-JUN-00 12:14:00 (CST)
Location: ANKENY
Magnitude: 59 E
Property damage: 10K
Crop damage: 2K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:18:00 to 13-JUN-00 12:18:00 (CST)
Location: DES MOINES
Magnitude: 56 E
Property damage: 5K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 12:36:00 to 13-JUN-00 12:36:00 (CST)
Location: NEVADA
Magnitude: 52 E
Property damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:00:00 to 13-JUN-00 12:00:00 (CST)
Location: DES MOINES
Magnitude: 56 E
Property damage: 40K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in WAPELLO, IOWA
From 13-JUN-00 13:00:00 to 13-JUN-00 13:00:00 (CST)
Location: EDDYVILLE
Magnitude: 56 E
Property damage: 5K
Crop damage: 1K
Reported by: NEWSPAPER

Lightning in JASPER, IOWA
From 13-JUN-00 13:00:00 to 13-JUN-00 13:00:00 (CST)
Location: NEWTON
Property damage: 1K
Reported by: NEWSPAPER

Hail in CALHOUN, IOWA
From 13-JUN-00 10:45:00 to 13-JUN-00 10:45:00 (CST)
Location: JOLLEY
Magnitude: 1.00 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CALHOUN, IOWA
From 13-JUN-00 10:45:00 to 13-JUN-00 10:45:00 (CST)
Location: JOLLEY
Magnitude: 52 E
Property damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:04:00 to 13-JUN-00 12:04:00 (CST)
Location: DES MOINES
Magnitude: 59 M
Property damage: 5K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in MARSHALL, IOWA
From 13-JUN-00 13:05:00 to 13-JUN-00 13:05:00 (CST)
Location: MARSHALLTOWN
Magnitude: 56 E
Property damage: 25K
Crop damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:05:00 to 13-JUN-00 12:05:00 (CST)
Location: DES MOINES
Magnitude: 52 E
Property damage: 10K
Reported by: AMATEUR RADIO

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:04:00 to 13-JUN-00 12:04:00 (CST)
Location: ANKENY
Magnitude: 55 M
Property damage: 10K
Reported by: AWOS,ASOS,MESONET,ETC

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:10:00 to 13-JUN-00 12:10:00 (CST)
Location: ANKENY
Magnitude: 75 E
Property damage: 50K
Crop damage: 10K
Reported by: LAW ENFORCEMENT

Hail in WRIGHT, IOWA
From 13-JUN-00 13:10:00 to 13-JUN-00 13:10:00 (CST)
Location: EAGLE GROVE
Magnitude: 0.88 
Crop damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 12:38:00 to 13-JUN-00 12:38:00 (CST)
Location: MAXWELL
Magnitude: 52 E
Property damage: 3K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in HAMILTON, IOWA
From 13-JUN-00 12:45:00 to 13-JUN-00 12:45:00 (CST)
Location: WEBSTER CITY
Magnitude: 52 E
Property damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 11:57:00 to 13-JUN-00 11:57:00 (CST)
Location: DES MOINES
Magnitude: 52 E
Property damage: 5K
Reported by: BROADCAST MEDIA

Hail in MARSHALL, IOWA
From 13-JUN-00 12:35:00 to 13-JUN-00 12:35:00 (CST)
Location: STATE CENTER
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 11:50:00 to 13-JUN-00 11:50:00 (CST)
Location: DES MOINES
Magnitude: 56 E
Property damage: 50K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 12:11:00 to 13-JUN-00 12:11:00 (CST)
Location: WEST DES MOINES
Magnitude: 52 E
Property damage: 10K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in POLK, IOWA
From 13-JUN-00 10:52:00 to 13-JUN-00 10:52:00 (CST)
Location: DES MOINES ARPT
Magnitude: 59 M
Property damage: 5K
Reported by: AWOS,ASOS,MESONET,ETC

Hail in POLK, IOWA
From 13-JUN-00 11:56:00 to 13-JUN-00 11:56:00 (CST)
Location: DES MOINES ARPT
Magnitude: 1.00 
Property damage: 3K
Crop damage: 5K
Reported by: AMATEUR RADIO

Hail in LUCAS, IOWA
From 13-JUN-00 11:30:00 to 13-JUN-00 11:30:00 (CST)
Location: LUCAS
Magnitude: 0.88 
Property damage: 1K
Crop damage: 5K
Reported by: EMERGENCY MANAGER

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

Thunderstorm Wind in WARREN, IOWA
From 13-JUN-00 13:35:00 to 13-JUN-00 13:35:00 (CST)
Location: INDIANOLA
Magnitude: 52 E
Property damage: 10K
Reported by: NEWSPAPER

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 12:31:00 to 13-JUN-00 12:31:00 (CST)
Location: MAXWELL
Magnitude: 52 E
Property damage: 2K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in STORY, IOWA
From 13-JUN-00 12:27:00 to 13-JUN-00 12:27:00 (CST)
Location: AMES
Magnitude: 61 E
Property damage: 5K
Crop damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in WAPELLO, IOWA
From 13-JUN-00 13:20:00 to 13-JUN-00 13:20:00 (CST)
Location: ELDON
Magnitude: 61 E
Property damage: 15K
Crop damage: 1K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in BLACK HAWK, IOWA
From 13-JUN-00 13:30:00 to 13-JUN-00 13:30:00 (CST)
Location: WATERLOO
Magnitude: 52 E
Property damage: 1K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in BREMER, IOWA
From 13-JUN-00 13:50:00 to 13-JUN-00 13:50:00 (CST)
Location: WAVERLY
Magnitude: 50 E
Property damage: 3K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in TAMA, IOWA
From 13-JUN-00 13:30:00 to 13-JUN-00 13:30:00 (CST)
Location: BUCKINGHAM
Magnitude: 52 E
Property damage: 1K
Reported by: TRAINED SPOTTER