A warm front remained nearly stationary from low pressure in South Dakota..southeast into southwest Iowa and northern Missouri.  The airmass was quite capped with 700 mb temperatures in the 11 to 14 degree C. range.  Thunderstorms fired over northern Iowa by around midnight.  The storms were very elevated and were for the most part hail producers.  There were numerous reports of three quarter to one inch diameter size hail across north central into northeast Iowa.  A few of the storms produced much larger hail.  Golf ball size hail fell in Wright County in the Eagle Grove area.  in Cerro Gordo County, Mason City was hard hit by another storm.  There were several reports of golf ball size hail causing damage to several homes.  Numerous windows were broken and some damage was reported to the siding of several homes as the hail was accompanied by 40 to 50 MPH winds.  About three hours later, another cell dropped large hail in Butler County.  Considerable damage occurred in the town of Parkersburg as golf ball to baseball size hail pelted the city.  Toward the end of the event, a few of the cells became wind producers as they weakened.  Severe criteria wind occurred in Butler County as winds of 60 to 70 MPH were reported.  Several trees were downed and power was knocked out in the Allison area.  Fortunately, much of the area that received heavy rainfall was relatively dry during June.  Flash flooding occurred in Butler County with several reports of roads being washed out and flooding of residences basements.  Rainfall of two to four inches was common with most of it falling in under 3 hours.  During the storms, a minivan was struck by lightning east of Waterloo.  The lightning traveled through the van, blowing out the rear window.  It also left a 2 foot diameter crater in the roadway on U.S. Highway 20.

Hail in WEBSTER, IOWA
From 19-JUN-02 01:00:00 to 19-JUN-02 01:00:00 (CST)
Location: BADGER
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: GENERAL PUBLIC

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:01:00 to 19-JUN-02 03:01:00 (CST)
Location: MASON CITY
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: BROADCAST MEDIA

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:15:00 to 19-JUN-02 03:15:00 (CST)
Location: MASON CITY
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in WRIGHT, IOWA
From 19-JUN-02 01:00:00 to 19-JUN-02 01:00:00 (CST)
Location: EAGLE GROVE
Magnitude: 1.75 
Property damage: 50K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:30:00 to 19-JUN-02 02:30:00 (CST)
Location: THORNTON
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Hail in BUTLER, IOWA
From 19-JUN-02 06:08:00 to 19-JUN-02 06:08:00 (CST)
Location: PARKERSBURG
Magnitude: 0.75 
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:06:00 to 19-JUN-02 03:06:00 (CST)
Location: MASON CITY
Magnitude: 1.75 
Property damage: 15K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:59:00 to 19-JUN-02 02:59:00 (CST)
Location: MASON CITY
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:33:00 to 19-JUN-02 02:33:00 (CST)
Location: CLEAR LAKE
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:51:00 to 19-JUN-02 02:51:00 (CST)
Location: MASON CITY
Magnitude: 0.75 
Crop damage: 3K
Reported by: LAW ENFORCEMENT

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:00:00 to 19-JUN-02 03:00:00 (CST)
Location: MASON CITY
Magnitude: 1.75 
Property damage: 75K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Accompanied by 40 to 50 MPH winds.

Hail in BUTLER, IOWA
From 19-JUN-02 03:58:00 to 19-JUN-02 03:58:00 (CST)
Location: BRISTOW
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in BUTLER, IOWA
From 19-JUN-02 04:05:00 to 19-JUN-02 04:05:00 (CST)
Location: DUMONT
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in BUTLER, IOWA
From 19-JUN-02 06:10:00 to 19-JUN-02 06:10:00 (CST)
Location: PARKERSBURG
Magnitude: 1.75 
Property damage: 10K
Crop damage: 5K
Reported by: UNKNOWN

Thunderstorm Wind in GRUNDY, IOWA
From 19-JUN-02 07:32:00 to 19-JUN-02 07:32:00 (CST)
Location: GRUNDY CENTER
Magnitude: 52 E
Property damage: 3K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in BUTLER, IOWA
From 19-JUN-02 07:38:00 to 19-JUN-02 07:38:00 (CST)
Location: PARKERSBURG
Magnitude: 52 E
Property damage: 3K
Reported by: TRAINED SPOTTER

Hail in FRANKLIN, IOWA
From 19-JUN-02 07:06:00 to 19-JUN-02 07:06:00 (CST)
Location: ACKLEY
Magnitude: 0.75 
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in BUTLER, IOWA
From 19-JUN-02 07:53:00 to 19-JUN-02 07:53:00 (CST)
Location: AREDALE
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in BUTLER, IOWA
From 19-JUN-02 08:40:00 to 19-JUN-02 08:40:00 (CST)
Location: ALLISON
Magnitude: 61 E
Property damage: 10K
Crop damage: 5K
Reported by: GENERAL PUBLIC

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:10:00 to 19-JUN-02 03:10:00 (CST)
Location: MASON CITY
Magnitude: 1.75 
Property damage: 100K
Crop damage: 5K
Reported by: BROADCAST MEDIA

Thunderstorm Wind in BUTLER, IOWA
From 19-JUN-02 08:20:00 to 19-JUN-02 08:20:00 (CST)
Location: BRISTOW
Magnitude: 52 E
Property damage: 5K
Reported by: BROADCAST MEDIA

Hail in FRANKLIN, IOWA
From 19-JUN-02 08:31:00 to 19-JUN-02 08:31:00 (CST)
Location: HANSELL
Magnitude: 0.75 
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:58:00 to 19-JUN-02 02:58:00 (CST)
Location: MASON CITY
Magnitude: 1.25 
Property damage: 10K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Hail in BUTLER, IOWA
From 19-JUN-02 06:12:00 to 19-JUN-02 06:12:00 (CST)
Location: PARKERSBURG
Magnitude: 2.75 
Property damage: 75K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:38:00 to 19-JUN-02 02:38:00 (CST)
Location: CLEAR LAKE
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Lightning in BLACK HAWK, IOWA
From 19-JUN-02 04:30:00 to 19-JUN-02 04:30:00 (CST)
Location: WATERLOO
Property damage: 2K
Reported by: NEWSPAPER

Hail in HARDIN, IOWA
From 19-JUN-02 07:15:00 to 19-JUN-02 07:15:00 (CST)
Location: ACKLEY
Magnitude: 0.75 
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 02:15:00 to 19-JUN-02 02:15:00 (CST)
Location: THORNTON
Magnitude: 1.50 
Property damage: 15K
Crop damage: 5K
Reported by: NEWSPAPER

Hail in CERRO GORDO, IOWA
From 19-JUN-02 03:12:00 to 19-JUN-02 03:12:00 (CST)
Location: MASON CITY
Magnitude: 1.75 
Property damage: 100K
Crop damage: 5K
Reported by: LAW ENFORCEMENT

Hail in FRANKLIN, IOWA
From 19-JUN-02 08:12:00 to 19-JUN-02 08:12:00 (CST)
Location: SHEFFIELD
Magnitude: 1.00 
Property damage: 5K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Flash Flood in BUTLER, IOWA
From 19-JUN-02 09:20:00 to 19-JUN-02 15:00:00 (CST)
Location: COUNTYWIDE
Property damage: 75K
Crop damage: 50K
Reported by: LAW ENFORCEMENT

Hail in WRIGHT, IOWA
From 19-JUN-02 01:00:00 to 19-JUN-02 01:00:00 (CST)
Location: EAGLE GROVE
Magnitude: 0.88 
Property damage: 3K
Crop damage: 5K
Reported by: TRAINED SPOTTER

Hail in GRUNDY, IOWA
From 19-JUN-02 06:30:00 to 19-JUN-02 06:30:00 (CST)
Location: STOUT
Magnitude: 0.75 
Crop damage: 5K
Reported by: TRAINED SPOTTER