Brown County Natural Disasters and Weather Extremes
The chance of earthquake damage in Brown County is about the same as Wisconsin average and is much lower than the national average. The risk of tornado damage in Brown County is lower than Wisconsin average and is lower than the national average.
Earthquake Index, #29
| Brown County | 0.00 |
| Wisconsin | 0.00 |
| 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
| Brown County | 0.0000 |
| Wisconsin | 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, #42
| Brown County | 124.16 |
| Wisconsin | 153.98 |
| 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 6,387 other weather extremes events within 50 miles of Brown County 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: | 27 | Cold: | 77 | Dense Fog: | 131 | Drought: | 68 |
| Dust Storm: | 0 | Flood: | 272 | Hail: | 1,713 | Heat: | 60 | Heavy Snow: | 216 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 33 | Landslide: | 0 | Strong Wind: | 112 |
| Thunderstorm Winds: | 2,832 | Tropical Storm: | 0 | Wildfire: | 7 | Winter Storm: | 209 | Winter Weather: | 72 |
| Other: | 558 | ||||||||
Volcanos Nearby
No volcano is found in or near Brown County.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Brown County.
No historical earthquake events found in or near Brown County.
Historical Tornado Events
A total of 42 historical tornado events that had recorded magnitude of 2 or above found in or near Brown County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 1.8 | 1970-04-22 | 2 | 44°27'N / 88°02'W | 44°33'N / 87°58'W | 7.20 Miles | 800 Yards | 0 | 1 | 250K | 0 | Brown |
| 1.9 | 1959-05-10 | 2 | 44°29'N / 88°03'W | 44°31'N / 87°58'W | 4.30 Miles | 33 Yards | 0 | 3 | 2.5M | 0 | Brown |
| 2.6 | 1970-04-22 | 2 | 44°28'N / 88°04'W | 44°31'N / 88°01'W | 3.60 Miles | 800 Yards | 0 | 2 | 250K | 0 | Brown |
| 15.2 | 1968-08-16 | 2 | 44°36'N / 88°15'W | 1.00 Mile | 100 Yards | 0 | 1 | 25K | 0 | Brown | |
| 15.4 | 1994-07-05 | 2 | 44°18'N / 87°48'W | 1.00 Mile | 150 Yards | 0 | 0 | 500K | 50K | Manitowoc | |
| 15.7 | 1994-07-05 | 4 | 44°17'N / 87°49'W | 44°19'N / 87°46'W | 3.50 Miles | 150 Yards | 0 | 2 | 5.0M | 500K | Manitowoc |
| 16.3 | 1969-06-26 | 3 | 44°35'N / 88°17'W | 44°41'N / 88°12'W | 7.60 Miles | 100 Yards | 0 | 0 | 2.5M | 0 | Shawano |
| 17.7 | 1969-06-26 | 3 | 44°30'N / 88°24'W | 44°35'N / 88°17'W | 7.70 Miles | 100 Yards | 0 | 1 | 2.5M | 0 | Outagamie |
| 19.7 | 1964-05-08 | 2 | 44°14'N / 88°25'W | 44°20'N / 88°10'W | 14.00 Miles | 63 Yards | 0 | 0 | 2.5M | 0 | Calumet |
| 19.9 | 1968-08-16 | 2 | 44°15'N / 88°15'W | 2.00 Miles | 100 Yards | 0 | 0 | 25K | 0 | Outagamie | |
| 22.4 | 1984-04-27 | 4 | 44°15'N / 88°32'W | 44°27'N / 88°18'W | 15.50 Miles | 60 Yards | 0 | 9 | 2.5M | 0 | Outagamie |
| 24.7 | 1970-04-22 | 2 | 44°35'N / 87°37'W | 44°40'N / 87°28'W | 8.90 Miles | 500 Yards | 0 | 0 | 250K | 0 | Kewaunee |
| 24.8 | 1965-07-08 | 2 | 44°10'N / 88°18'W | 44°11'N / 88°15'W | 0 | 0 | 25K | 0 | Calumet | ||
| 26.5 | 1982-05-06 | 2 | 44°22'N / 88°35'W | 44°27'N / 88°28'W | 9.00 Miles | 100 Yards | 0 | 0 | 250K | 0 | Outagamie |
| 27.3 | 1959-05-06 | 2 | 44°28'N / 88°33'W | 0 | 0 | 25K | 0 | Outagamie | |||
| 27.5 | 1970-12-01 | 3 | 44°20'N / 88°39'W | 44°27'N / 88°26'W | 13.10 Miles | 67 Yards | 0 | 0 | 2.5M | 0 | Outagamie |
| 28.7 | 1980-06-07 | 2 | 44°04'N / 87°53'W | 0.20 Mile | 33 Yards | 0 | 0 | 250K | 0 | Manitowoc | |
| 29.8 | 1970-04-22 | 2 | 44°40'N / 87°28'W | 44°42'N / 87°28'W | 2.30 Miles | 500 Yards | 0 | 2 | 250K | 0 | Door |
| 30.5 | 1967-06-30 | 2 | 44°02'N / 88°02'W | 44°02'N / 88°01'W | 0 | 0 | 250K | 0 | Manitowoc | ||
| 30.6 | 1970-04-22 | 2 | 44°36'N / 87°27'W | 44°40'N / 87°23'W | 5.20 Miles | 500 Yards | 0 | 1 | 250K | 0 | Kewaunee |
| 30.9 | 1967-06-30 | 2 | 44°02'N / 88°10'W | 44°02'N / 88°02'W | 5.90 Miles | 100 Yards | 0 | 1 | 250K | 0 | Calumet |
| 31.9 | 1979-08-09 | 2 | 44°04'N / 88°18'W | 1 | 0 | 25K | 0 | Calumet | |||
| 32.0 | 1966-06-04 | 2 | 44°53'N / 88°18'W | 44°55'N / 88°12'W | 4.70 Miles | 50 Yards | 0 | 0 | 25K | 0 | Oconto |
| 32.7 | 1979-06-16 | 2 | 44°53'N / 88°18'W | 44°59'N / 88°01'W | 15.20 Miles | 100 Yards | 0 | 0 | 250K | 0 | Oconto |
| 34.7 | 1970-04-22 | 2 | 44°40'N / 87°23'W | 44°44'N / 87°21'W | 4.30 Miles | 500 Yards | 0 | 0 | 250K | 0 | Door |
| 34.9 | 1964-05-08 | 2 | 44°07'N / 88°43'W | 44°14'N / 88°25'W | 16.60 Miles | 63 Yards | 0 | 5 | 2.5M | 0 | Winnebago |
| 36.8 | 1966-06-04 | 2 | 44°57'N / 88°20'W | 44°59'N / 88°14'W | 4.90 Miles | 50 Yards | 0 | 0 | 25K | 0 | Oconto |
| 37.0 | 1985-06-08 | 2 | 44°48'N / 87°28'W | 44°50'N / 87°22'W | 5.00 Miles | 150 Yards | 0 | 0 | 2.5M | 0 | Door |
| 38.3 | 1984-04-27 | 4 | 44°05'N / 88°45'W | 44°15'N / 88°32'W | 12.00 Miles | 60 Yards | 1 | 10 | 2.5M | 0 | Winnebago |
| 38.7 | 1981-04-04 | 2 | 43°55'N / 88°05'W | 0.10 Mile | 23 Yards | 0 | 6 | 250K | 0 | Calumet | |
| 39.2 | 1954-06-20 | 2 | 43°57'N / 88°18'W | 0.50 Mile | 33 Yards | 0 | 0 | 0K | 0 | Calumet | |
| 39.3 | 1959-05-06 | 2 | 44°31'N / 88°52'W | 44°32'N / 88°43'W | 7.20 Miles | 1760 Yards | 0 | 0 | 0K | 0 | Waupaca |
| 40.3 | 1956-07-01 | 2 | 44°44'N / 87°23'W | 44°51'N / 87°14'W | 10.60 Miles | 50 Yards | 0 | 0 | 250K | 0 | Door |
| 40.3 | 1996-07-18 | 2 | 43°56'N / 88°14'W | 43°53'N / 88°10'W | 4.40 Miles | 200 Yards | 1 | 1 | 450K | 300K | Fond Du Lac |
| Brief Description: A strong tornado (F2) struck Marytown, resulting in 1 fatility (81 year old male) and 1 injury. This tornado actually touched down in Calumet county about 1.1 miles SE of Jericho (see WFO GRB Stormdata report), and then headed southeast into into Fond du Lac county at a point 2.0 NW of Marytown. It destroyed or damaged at least a couple dozen barns, sheds, and homes on a southeastward path. Many large trees were uprooted. The north side of Marytown was hit the hardest, where a house trailer, 3 homes, and a machine shed were destroyed. The tornado exited Fond du Lac county at a point 2.5 miles SE of Marytown and re-entered Calumet county where it quickly dissapated. The path length in Fond du Lac county was 4.4 miles. M81PH | |||||||||||
| 41.8 | 1964-05-08 | 2 | 44°35'N / 88°51'W | 44°38'N / 88°48'W | 3.30 Miles | 200 Yards | 0 | 1 | 250K | 0 | Waupaca |
| 41.9 | 1966-06-04 | 2 | 45°01'N / 88°23'W | 45°03'N / 88°16'W | 5.40 Miles | 50 Yards | 0 | 0 | 25K | 0 | Oconto |
| 42.0 | 1968-08-19 | 4 | 45°05'N / 88°05'W | 45°04'N / 87°38'W | 21.80 Miles | 33 Yards | 2 | 3 | 2.5M | 0 | Marinette |
| 44.4 | 1964-06-09 | 2 | 45°06'N / 88°03'W | 45°08'N / 87°59'W | 3.00 Miles | 50 Yards | 0 | 0 | 25K | 0 | Marinette |
| 45.4 | 1974-04-21 | 4 | 43°54'N / 88°41'W | 44°04'N / 88°32'W | 13.50 Miles | 200 Yards | 0 | 35 | 2.5M | 0 | Winnebago |
| 45.7 | 1984-04-27 | 3 | 44°32'N / 88°55'W | 44°43'N / 88°53'W | 8.00 Miles | 43 Yards | 0 | 0 | 2.5M | 0 | Waupaca |
| 47.6 | 1984-04-27 | 3 | 44°40'N / 88°53'W | 44°56'N / 88°49'W | 17.00 Miles | 43 Yards | 0 | 0 | 2.5M | 0 | Shawano |
| 48.3 | 1974-04-21 | 3 | 43°39'N / 88°10'W | 43°54'N / 87°43'W | 28.10 Miles | 200 Yards | 1 | 7 | 2.5M | 0 | Sheboygan |
* 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.