Storm Events Database

Event Details

Event Flash Flood
-- Flood Cause Heavy Rain
State MINNESOTA
County/Area HOUSTON
WFO ARX
Report Source County Official
NCDC Data Source CSV
Begin Date 2007-08-18 20:30:00.0 CST-6
Begin Location 1SW HOKAH
Begin Lat/Lon 43.76/-91.35
End Date 2007-08-19 06:00:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 30/0
Property Damage 27.00M
Crop Damage 750.00K
Episode Narrative A warm front lifting northward into Iowa triggered round after round of thunderstorms with excessive rainfall across southeast Minnesota during the evening and overnight hours of August 18-19. This was after rain had fallen earlier in the day. Total rainfall amounts of 10 to 15 inches were common, which produced widespread and significant flash flooding. An official rainfall total of 15.1 inches near Hokah (Houston County) established an all-time 24 hour rainfall record for the state of Minnesota. Other rainfall totals, which were unofficial readings, included 17.00 and 14.00 inches respectively in Witoka and Utica (Winona County). Numerous roads and bridges were washed out, houses collapsed due to mudslides and hundreds of homes had flooded basements. Law enforcement and fire department officials reported rescuing people from their vehicles, as well as from house tops. There were seven fatalities reported, five in Winona County and two in Houston County. Damage attributed to the heavy rainfall and subsequent flooding was estimated to be in the millions of dollars. Fillmore, Houston, Olmsted, Wabasha and Winona counties were declared federal disaster areas.
Event Narrative At least 50 mudslides were reported across the county with four state highways and eight county roads closed. At one point 20 roads were closed across the county. Some homes collapsed or were carried away by mudslides. Numerous railroad tracks and bridges washed out. There were numerous reports of injuries. Hardest hit communities included Houston, Hokah, La Crescent and Brownsville. A 25 foot earthen dam near Hokah, which was built in 1921, collapsed. This caused significant damage to a portion of the town, including the main park and an automobile dealership. First calls of flooding began around 9:30 p.m. Saturday August 18 to dispatch center, with flooding problems becoming exceedingly worse afterwards.
4,200 homes were reportedly damaged or destroyed.


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 7 32 176.480M 5.234M
HOKAH HOUSTON CO. MN 08/18/2007 06:00 CST-6 Heavy Rain 0 0 15.00K 5.00K
DODGE CENTER DODGE CO. MN 08/18/2007 17:00 CST-6 Flash Flood 0 0 100.00K 30.00K
MONEY CREEK HOUSTON CO. MN 08/18/2007 19:22 CST-6 Flash Flood 0 0 6.000M 300.00K
ROCHESTER OLMSTED CO. MN 08/18/2007 20:15 CST-6 Flash Flood 0 0 35.000M 90.00K
HOKAH HOUSTON CO. MN 08/18/2007 20:30 CST-6 Flash Flood 0 30 27.000M 750.00K
HOUSTON HOUSTON CO. MN 08/18/2007 21:00 CST-6 Flash Flood 1 0 600.00K 70.00K
LA CRESCENT HOUSTON CO. MN 08/18/2007 21:00 CST-6 Flash Flood 1 2 3.000M 250.00K
LEWISTON WINONA CO. MN 08/18/2007 21:48 CST-6 Flash Flood 0 0 6.000M 250.00K
STOCKTON WINONA CO. MN 08/18/2007 21:48 CST-6 Flash Flood 0 0 22.000M 200.00K
ELBA WINONA CO. MN 08/18/2007 22:00 CST-6 Flood 0 0 60.00K 25.00K
EYOTA OLMSTED CO. MN 08/18/2007 22:12 CST-6 Flash Flood 0 0 9.600M 7.00K
LEWISTON WINONA CO. MN 08/18/2007 22:25 CST-6 Flash Flood 5 0 300.00K 125.00K
RUSHFORD FILLMORE CO. MN 08/18/2007 22:30 CST-6 Flash Flood 0 0 38.000M 390.00K
WINONA WINONA CO. MN 08/18/2007 22:35 CST-6 Flash Flood 0 0 12.000M 450.00K
ELGIN WABASHA CO. MN 08/18/2007 23:15 CST-6 Flash Flood 0 0 1.200M 12.00K
ROCHESTER OLMSTED CO. MN 08/19/2007 00:00 CST-6 Flood 0 0 20.00K 10.00K
KASSON DODGE CO. MN 08/19/2007 00:30 CST-6 Flash Flood 0 0 30.00K 5.00K
HOUSTON HOUSTON CO. MN 08/19/2007 02:00 CST-6 Flood 0 0 750.00K 500.00K
ELGIN WABASHA CO. MN 08/19/2007 02:25 CST-6 Flash Flood 0 0 400.00K 30.00K
ADAMS MOWER CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 20.00K 10.00K
DODGE CENTER DODGE CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 600.00K 55.00K
HOUSTON HOUSTON CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 1.000M 500.00K
ROCHESTER OLMSTED CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 20.00K 10.00K
RUSHFORD FILLMORE CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 11.000M 750.00K
WINONA WINONA CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 1.500M 250.00K
ZUMBRO FALLS WABASHA CO. MN 08/19/2007 06:00 CST-6 Flood 0 0 250.00K 150.00K
ZUMBRO FALLS WABASHA CO. MN 08/19/2007 11:00 CST-6 Flood 0 0 15.00K 10.00K
Totals: 7 32 176.480M 5.234M