Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 56 kts.
State MINNESOTA
County/Area KOOCHICHING
WFO DLH
Begin Date 07/11/2008 09:05:00 CST-6
Begin Range 0
Begin Azimuth N
Begin Location LITTLE FORK
Begin Lat/Lon 48.4/-93.55
End Date 07/11/2008 09:05:00 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative A strong upper level disturbance triggered strong and severe thunderstorms across much of northeast Minnesota during the morning and early afternoon hours.

By mid afternoon, very warm and moist air surged north ahead of low pressure over the Dakotas, while a cold front stretched across central Minnesota. This combination of meteorological conditions set the stage for additional severe thunderstorm development through the evening.

Storms developed in a broken line in western Minnesota by mid afternoon and propagated eastward through the late afternoon into the Brainerd Lakes region. By this time, a nearly solid line of thunderstorms extended from central Minnesota northward almost to the Canadian border. Many reports of wind damage and hail were noted with these storms as they moved east.

One particular area of wind damage was concentrated in northern Aitkin County, north of McGregor. Tree damage was widespread along a 6-mile path, from about 3 miles east of Palisade, to the south end of Big Sandy Lake. Results of a NWS storm survey assessment suggested that straight line and downburst winds were the primary cause. The majority of trees were blown down in one direction or fanned out in a divergent pattern. Many of the trees downed were over one foot in diameter, and some as large as two feet in diameter.

Thousands of trees in a 420 acre area of St. Croix State Park were mangled or uprooted. This area will be logged to mitigate wildfires.
Event Narrative An 18-inch spruce tree was snapped and a 30-inch oak tree was blown down. Several other trees were blown down.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 5.00K 0.00K
BIG FALLS KOOCHICHING CO. MN 07/11/2008 06:30 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
LITTLE FORK KOOCHICHING CO. MN 07/11/2008 09:00 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
LITTLE FORK KOOCHICHING CO. MN 07/11/2008 09:04 CST-6 Thunderstorm Wind 65 kts. EG 0 0 0.00K 0.00K
RAY KOOCHICHING CO. MN 07/11/2008 09:05 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
LITTLE FORK KOOCHICHING CO. MN 07/11/2008 09:05 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
KABETOGAMA ST. LOUIS CO. MN 07/11/2008 09:50 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
BUYCK ST. LOUIS CO. MN 07/11/2008 11:25 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
PILLAGER CASS CO. MN 07/11/2008 16:55 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
GULL LAKE CASS CO. MN 07/11/2008 16:55 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
NISSWA CROW WING CO. MN 07/11/2008 17:05 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
LEADER CASS CO. MN 07/11/2008 17:15 CST-6 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
LEADER CASS CO. MN 07/11/2008 17:15 CST-6 Funnel Cloud 0 0 0.00K 0.00K
MAX ITASCA CO. MN 07/11/2008 17:20 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
NISSWA CROW WING CO. MN 07/11/2008 17:27 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
PALISADE AITKIN CO. MN 07/11/2008 18:10 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
RUSH CITY MUNI ARPT AITKIN CO. MN 07/11/2008 18:30 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
HINCKLEY PINE CO. MN 07/11/2008 19:10 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
CLOVERDALE PINE CO. MN 07/11/2008 19:20 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
STURGEON LAKE PINE CO. MN 07/11/2008 19:20 CST-6 Thunderstorm Wind 60 kts. EG 0 0 0.00K 0.00K
Totals: 0 0 5.00K 0.00K