Chelsea, MA Natural Disasters and Weather Extremes
The chance of earthquake damage in Chelsea is higher than Massachusetts average and is about the same as the national average. The risk of tornado damage in Chelsea is lower than Massachusetts average and is lower than the national average.
Earthquake Index, #51
| Chelsea, MA | 1.62 |
| Massachusetts | 0.70 |
| 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
| Chelsea, MA | 0.0000 |
| Massachusetts | 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, #363
| Chelsea, MA | 77.56 |
| Massachusetts | 87.60 |
| 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 2,796 other weather extremes events within 50 miles of Chelsea, MA 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: | 0 | Cold: | 10 | Dense Fog: | 0 | Drought: | 9 |
| Dust Storm: | 0 | Flood: | 323 | Hail: | 583 | Heat: | 1 | Heavy Snow: | 65 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 2 | Landslide: | 0 | Strong Wind: | 49 |
| Thunderstorm Winds: | 1,154 | Tropical Storm: | 0 | Wildfire: | 0 | Winter Storm: | 13 | Winter Weather: | 4 |
| Other: | 583 | ||||||||
Volcanos Nearby
No volcano is found in or near Chelsea, MA.
Historical Earthquake Events
A total of 1 historical earthquake event that had a recorded magnitude of 3.5 or above found in or near Chelsea, MA.
| Distance (miles) | Date | Magnitude | Depth (km) | Latitude | Longitude |
| 13.8 | 1963-10-16 | 4.5 | 20 | 42.5 | -70.8 |
Historical Tornado Events
A total of 28 historical tornado events that had recorded magnitude of 2 or above found in or near Chelsea, MA.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 9.6 | 1958-08-25 | 2 | 42°32'N / 71°00'W | 1.00 Mile | 50 Yards | 0 | 0 | 3K | 0 | Middlesex | |
| 15.4 | 1958-07-11 | 2 | 42°30'N / 71°18'W | 1.50 Miles | 17 Yards | 0 | 0 | 250K | 0 | Middlesex | |
| 17.3 | 1956-11-21 | 2 | 42°10'N / 71°10'W | 0.10 Mile | 17 Yards | 0 | 0 | 3K | 0 | Norfolk | |
| 17.4 | 1974-09-29 | 3 | 42°36'N / 71°14'W | 42°37'N / 71°12'W | 0 | 1 | 250K | 0 | Middlesex | ||
| 23.3 | 1951-08-21 | 2 | 42°42'N / 71°08'W | 42°46'N / 70°58'W | 9.30 Miles | 100 Yards | 0 | 0 | 3K | 0 | Essex |
| 23.9 | 1972-07-21 | 2 | 42°41'N / 71°25'W | 42°35'N / 71°20'W | 7.60 Miles | 37 Yards | 0 | 4 | 2.5M | 0 | Middlesex |
| 25.8 | 1953-06-09 | 3 | 42°03'N / 71°14'W | 42°03'N / 71°12'W | 0 | 1 | 2.5M | 0 | Bristol | ||
| 26.0 | 1965-08-28 | 2 | 42°42'N / 71°20'W | 2.00 Miles | 33 Yards | 0 | 0 | 250K | 0 | Middlesex | |
| 27.5 | 1970-10-03 | 3 | 42°33'N / 71°32'W | 42°34'N / 71°31'W | 1 | 0 | 250K | 0 | Middlesex | ||
| 27.8 | 1953-06-09 | 3 | 42°06'N / 71°29'W | 42°03'N / 71°14'W | 13.10 Miles | 667 Yards | 0 | 15 | 2.5M | 0 | Norfolk |
| 27.9 | 1956-11-21 | 2 | 42°48'N / 71°00'W | 0.80 Mile | 17 Yards | 0 | 0 | 25K | 0 | Essex | |
| 29.0 | 1963-05-20 | 2 | 42°24'N / 71°36'W | 0.30 Mile | 50 Yards | 0 | 0 | 3K | 0 | Worcester | |
| 29.7 | 1961-07-02 | 2 | 42°50'N / 71°16'W | 42°46'N / 71°12'W | 5.10 Miles | 400 Yards | 0 | 1 | 250K | 0 | Rockingham |
| 30.5 | 1967-11-18 | 2 | 41°58'N / 70°54'W | 0.10 Mile | 17 Yards | 0 | 0 | 0K | 0 | Plymouth | |
| 32.6 | 1951-08-21 | 2 | 42°50'N / 71°08'W | 42°54'N / 71°04'W | 4.90 Miles | 67 Yards | 0 | 0 | 3K | 0 | Rockingham |
| 34.1 | 1956-11-21 | 2 | 42°24'N / 71°42'W | 0.10 Mile | 17 Yards | 0 | 0 | 2.5M | 0 | Worcester | |
| 34.1 | 1963-05-20 | 2 | 42°24'N / 71°42'W | 1.50 Miles | 33 Yards | 0 | 0 | 25K | 0 | Worcester | |
| 35.4 | 1953-06-09 | 3 | 42°10'N / 71°46'W | 42°06'N / 71°29'W | 14.90 Miles | 667 Yards | 0 | 1 | 2.5M | 0 | Worcester |
| 37.1 | 2006-05-21 | 2 | 42°55'N / 70°51'W | 42°55'N / 70°51'W | 0.10 Mile | 20 Yards | 0 | 2 | 3K | 0 | Rockingham |
| Brief Description: A small, but rather intense, tornado touched down on Interstate 95 about two miles south of the Hampton Toll Booths in the town of Hampton Falls. While several funnel clouds were observed over southeastern New Hampshire that Sunday evening, the actual tornado touched down just as one of the funnel clouds approached I-95. The tornado then lifted off the ground about 100 yards after crossing I-95. The most significant damage was to a truck parked along the side of the highway. The trucked was lifted off the ground briefly by the tornado, thrown about 10 feet, landed on the passenger side, and then rolled 1 1/4 times ending up on its roof. Two men were in the truck at the time and were taken to a nearby hospital for treatment. After interviews with the occupants and eyewitness reports which indicated that the vehicle was lifted into the air, the tornado intensity was classified as F2 on the Fujita scale. These reports were consistent with the ground-based assessment. | |||||||||||
| 37.8 | 1957-07-05 | 2 | 42°32'N / 71°45'W | 0.50 Mile | 20 Yards | 0 | 0 | 3K | 0 | Worcester | |
| 39.5 | 1953-06-09 | 3 | 42°58'N / 70°58'W | 1.50 Miles | 100 Yards | 0 | 5 | 25K | 0 | Rockingham | |
| 39.8 | 1966-08-31 | 2 | 42°18'N / 71°48'W | 1.00 Mile | 67 Yards | 0 | 0 | 0K | 0 | Worcester | |
| 41.3 | 1953-06-09 | 4 | 42°28'N / 72°10'W | 42°18'N / 71°31'W | 34.90 Miles | 900 Yards | 90 | 1228 | 250.0M | 0 | Worcester |
| 41.8 | 1970-10-03 | 3 | 42°20'N / 72°10'W | 42°33'N / 71°32'W | 35.40 Miles | 60 Yards | 0 | 0 | 250K | 0 | Worcester |
| 42.7 | 1963-06-09 | 2 | 43°00'N / 71°30'W | 42°52'N / 71°24'W | 10.00 Miles | 77 Yards | 0 | 0 | 250K | 0 | Hillsborough |
| 46.8 | 1986-08-07 | 2 | 41°46'N / 71°27'W | 41°49'N / 71°26'W | 4.00 Miles | 1000 Yards | 0 | 20 | 2.5M | 0 | Providence |
| 49.3 | 1968-07-17 | 2 | 42°50'N / 71°48'W | 0.10 Mile | 17 Yards | 0 | 0 | 25K | 0 | Hillsborough | |
| 49.9 | 1957-06-19 | 2 | 43°06'N / 70°48'W | 0.20 Mile | 77 Yards | 0 | 1 | 25K | 0 | Rockingham | |
* 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.