Powerful, severe storms moved across northwest Indiana during the afternoon and evening hours of August 23rd.

Thunderstorm Wind in PORTER, INDIANA
From 23-AUG-07 15:12:00 to 23-AUG-07 15:12:00 (CST-6)
Location: VALPARAISO MUNI ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Measured gust to 60 mph.

Flash Flood in LAKE, INDIANA
From 23-AUG-07 19:12:00 to 24-AUG-07 01:00:00 (CST-6)
Location: ST JOHN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Streets closed due to flooding.

Hail in BENTON, INDIANA
From 23-AUG-07 15:14:00 to 23-AUG-07 15:16:00 (EST-5)
Location: FOWLER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:40:00 to 23-AUG-07 14:40:00 (CST-6)
Location: MUNSTER
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs blown down.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:43:00 to 23-AUG-07 14:43:00 (CST-6)
Location: DYER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs blown down at Arrowhead and Calumet Roads.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:43:00 to 23-AUG-07 14:43:00 (CST-6)
Location: HAMMOND
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large A-frame sign was blown down at Route 41 and Interstate 80/94.

Thunderstorm Wind in PORTER, INDIANA
From 23-AUG-07 15:12:00 to 23-AUG-07 15:12:00 (CST-6)
Location: VALPARAISO
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees blown down near Route 30 and Horseprairie Road, winds estimated to 80 mph.

Thunderstorm Wind in NEWTON, INDIANA
From 23-AUG-07 19:00:00 to 23-AUG-07 19:00:00 (CST-6)
Location: THAYER
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines blown down blocking roadways.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:51:00 to 23-AUG-07 14:51:00 (CST-6)
Location: GARY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated gust to 60 mph in downtown Gary.

Thunderstorm Wind in PORTER, INDIANA
From 23-AUG-07 15:01:00 to 23-AUG-07 15:01:00 (CST-6)
Location: VALPARAISO
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated gust to 80 mph in rural Washington Township.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:45:00 to 23-AUG-07 14:45:00 (CST-6)
Location: GARY MUNICIPAL ARPT
Magnitude: 50.00 MG
Property damage: 1.00M
Crop damage: 0.00K
Reported by: AWOS

Measured gust to 58 mph at Gary Airport.  A hangar under construction was damaged.

Flood in LAKE, INDIANA
From 24-AUG-07 09:00:00 to 25-AUG-07 07:00:00 (CST-6)
Location: HAMMOND
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Newspaper

Significant flooding occurred across parts of northwest Indiana due to heavy rains that fell during the evening of August 23rd, on top of already saturated soil.  Interstate 80/94 at Kennedy Avenue was flooded with all eastbound lanes closed and two westbound lanes closed.  In Merrillville, the Broadfield subdivision was flooded, several feet deep after retention ponds overflowed.  Across northern Lake County, hundreds of basements were flooded and numerous roads were closed due to flooding.  Many locations received 3 to 5 inches of rain.

Flood in PORTER, INDIANA
From 24-AUG-07 01:43:00 to 24-AUG-07 01:43:00 (CST-6)
Location: VALPARAISO
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

A van drove into eight inches of flood water, lost control, crossed the median into westbound lanes and was hit by a semi-trailer.  Two passengers were killed and the driver was critically injured.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:45:00 to 23-AUG-07 14:45:00 (CST-6)
Location: MERRILLVILLE
Magnitude: 70.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous large trees blown down...some on homes and cars, 30 to 40 inch diameter trees blown down, some uprooted and some snapped.  Significant damage to some homes.

Flood in LAKE, INDIANA
From 24-AUG-07 12:00:00 to 25-AUG-07 07:00:00 (CST-6)
Location: DYER
Flood cause: Heavy Rain
Property damage: 4.00M
Crop damage: 0.00K
Reported by: Broadcast Media

St. Margaret Mercy Hospital in Dyer Indiana suffered significant flooding around noon on Friday, August 24th, about 20 hours after the heavy rains fell, when Hart Ditch overflowed it's banks. Sixty seven patients were evacuated from the healthcare center when it was apparent that floodwaters entering the building would submerge the Hospital���s emergency generators and cutoff the buildings power supply. The first floor suffered significant water damage. More than 150 homes near the creek also sustained some type of flood damage. US 30 at Plum Creek was closed due to flooding.  Numerous cars were also damaged by flood waters.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:48:00 to 23-AUG-07 14:48:00 (CST-6)
Location: SCHERERVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated gust to 60 mph south of Route 30 and east of Route 41.

Thunderstorm Wind in LAKE, INDIANA
From 23-AUG-07 14:45:00 to 23-AUG-07 14:45:00 (CST-6)
Location: LOWELL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six inch diameter tree limb blown down.