Blackduck Public School District Natural Disasters and Weather Extremes
The chance of earthquake damage in Blackduck Public School District is about the same as Minnesota average and is much lower than the national average. The risk of tornado damage in Blackduck Public School District is much lower than Minnesota average and is much lower than the national average.
Earthquake Index, #204
| Blackduck Public School District | 0.00 |
| Minnesota | 0.01 |
| U.S. | 1.81 |
The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.
Volcano Index, #1
| Blackduck Public School District | 0.0000 |
| Minnesota | 0.0000 |
| U.S. | 0.0023 |
The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.
Tornado Index, #478
| Blackduck Public School District | 30.09 |
| Minnesota | 135.90 |
| U.S. | 136.45 |
The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.
Other Weather Extremes Events
A total of 813 other weather extremes events within 50 miles of Blackduck Public School District were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 20 | Cold: | 21 | Dense Fog: | 0 | Drought: | 10 |
| Dust Storm: | 0 | Flood: | 23 | Hail: | 409 | Heat: | 2 | Heavy Snow: | 11 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 6 | Landslide: | 0 | Strong Wind: | 5 |
| Thunderstorm Winds: | 270 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 24 | Winter Weather: | 0 |
| Other: | 12 | ||||||||
Volcanos Nearby
No volcano is found in or near Blackduck Public School District.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Blackduck Public School District.
No historical earthquake events found in or near Blackduck Public School District.
Historical Tornado Events
A total of 5 historical tornado events that had recorded magnitude of 2 or above found in or near Blackduck Public School District.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 30.8 | 1981-08-05 | 2 | 47°42'N / 95°15'W | 0.80 Mile | 70 Yards | 0 | 0 | 3K | 0 | Clearwater | |
| 38.6 | 1978-07-05 | 2 | 47°38'N / 95°35'W | 47°45'N / 95°15'W | 17.20 Miles | 400 Yards | 0 | 0 | 0K | 0 | Clearwater |
| 38.6 | 1960-08-25 | 2 | 47°42'N / 95°25'W | 0.20 Mile | 40 Yards | 0 | 0 | 25K | 0 | Clearwater | |
| 45.6 | 1991-07-05 | 2 | 47°06'N / 94°07'W | 2.50 Miles | 13 Yards | 0 | 0 | 0K | 0 | Cass | |
| 49.5 | 2008-06-06 | 3 | 46°58'N / 95°01'W | 47°04'N / 94°58'W | 7.00 Miles | 400 Yards | 0 | 0 | 0K | 0K | Hubbard |
| Brief Description: EVENT NARRATIVE: This tornado tracked for about 7 miles from the southwest edge of Big Sand Lake, across Pickerel Lake, to 1 mile northwest of Emmaville by 947 am CDT. Maximum width was around 400 yards with peak winds to 160 mph. The tornado completely destroyed two homes and damaged several others on Pickerel Lake. It flattened dozens of acres of forest. EPISODE NARRATIVE: A vertically stacked cold-core low pressure system moved into the Red River Valley and brought ideal conditions for low topped mini supercells. A negatively tilted 500 mb trough, diffluent height field, and a strong upper level disturbance were all present. At the surface, there was even a warm front east of the low, toward Hubbard and Wadena Counties. | |||||||||||
* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.