Nassau County Natural Disasters and Weather Extremes
The chance of earthquake damage in Nassau County is about the same as Florida average and is much lower than the national average. The risk of tornado damage in Nassau County is much lower than Florida average and is lower than the national average.
Earthquake Index, #32
| Nassau County | 0.00 |
| Florida | 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
| Nassau County | 0.0000 |
| Florida | 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, #61
| Nassau County | 80.54 |
| Florida | 185.89 |
| 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 6,519 other weather extremes events within 50 miles of Nassau 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: | 0 | Cold: | 25 | Dense Fog: | 47 | Drought: | 45 |
| Dust Storm: | 0 | Flood: | 280 | Hail: | 1,611 | Heat: | 16 | Heavy Snow: | 11 |
| High Surf: | 0 | Hurricane: | 17 | Ice Storm: | 5 | Landslide: | 0 | Strong Wind: | 36 |
| Thunderstorm Winds: | 3,555 | Tropical Storm: | 31 | Wildfire: | 77 | Winter Storm: | 5 | Winter Weather: | 6 |
| Other: | 752 | ||||||||
Volcanos Nearby
No volcano is found in or near Nassau County.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Nassau County.
No historical earthquake events found in or near Nassau County.
Historical Tornado Events
A total of 17 historical tornado events that had recorded magnitude of 2 or above found in or near Nassau County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 12.0 | 2004-08-12 | 2 | 30°28'N / 81°48'W | 30°24'N / 81°41'W | 7.00 Miles | 1 Yards | 0 | 0 | 0 | 0 | Duval |
| Brief Description: 1500: Tornado sighted on ground at the intersection of Imeson and Pritchard Rd. 1500: 3 train cars derailed in Edgewood area of town. 1500: Tornado progressing toward the Edgewood area...ripping up trees in its path. 1505: Tornado about 1 mile from Trained Storm Spotter who was at 601 Crestwood Ave. Tornado was observed in the Norwood and Edgewood areas of town. 1530: Trees on home at Francis and Cleveland Roads and 3056 Francis Road. Tree on house along Pettiford Drive. Powerlines down across the Edgewood area. Mobile home overturned on Edgewood Ave and U.S. 1 (New Kings Road). 6 trees broken. A police sub-station off of U.S. 1 and Edgewood had 6 cars and 1 tractor trailer damaged. Report from Trained Storm Spotter. 1530: Roof ripped off of grocery store at Ina Road and Imeson. Building bricks were broken off and hit 11 cars which caused damage. Trees down on homes at 6024 and 6026 Bagley Road. 1550: Radio reports of damage and debris along New Kings Road. Damage included downed and snapped trees and destroyed billboards. Road closures along New Kings Road heard at 1550 EST. 1550: Debris in trailer park including mattresses on roofs. 1600: Tornado sighted near West 45th Street and U.S. 1 in northwest Jacksonville. 1615: Numerous trees down and snapped in the Edgewood area of Jacksonville. | |||||||||||
| 14.5 | 1960-02-25 | 2 | 30°28'N / 81°35'W | 0 | 2 | 25K | 0 | Duval | |||
| 14.7 | 1964-06-06 | 2 | 30°24'N / 81°42'W | 30°25'N / 81°39'W | 3.60 Miles | 27 Yards | 0 | 0 | 250K | 0 | Duval |
| 18.8 | 1996-02-02 | 2 | 30°19'N / 81°43'W | 30°22'N / 81°40'W | 6.00 Miles | 80 Yards | 0 | 0 | 2.8M | 0 | Duval |
| Brief Description: The tornado touched-down at Park Street and Cassat Avenue and moved to just north of I-10/I-95. Sixty one homes reported minor damage, three with major damage. Four businesses reported major damage had 12 RVs valued up to 70K overturned. Trees, power lines and traffic lights were blown down along the path. | |||||||||||
| 21.2 | 1957-06-08 | 2 | 30°18'N / 81°44'W | 0.90 Mile | 33 Yards | 0 | 0 | 25K | 0 | Duval | |
| 22.0 | 1984-02-27 | 2 | 30°51'N / 81°36'W | 30°54'N / 81°32'W | 3.00 Miles | 100 Yards | 0 | 0 | 250K | 0 | Camden |
| 23.8 | 1974-05-12 | 2 | 30°17'N / 82°04'W | 30°19'N / 81°50'W | 14.20 Miles | 33 Yards | 0 | 0 | 250K | 0 | Duval |
| 26.2 | 1957-06-08 | 2 | 30°14'N / 81°41'W | 0 | 0 | 25K | 0 | Duval | |||
| 29.5 | 2007-04-15 | 2 | 30°31'N / 82°15'W | 2.00 Miles | 300 Yards | 0 | 0 | 0K | 0K | Baker | |
| Brief Description: EVENT NARRATIVE: An EF2 tornado tracked across rural farmland in extreme northeast Baker county, just southwest of Moniac. A residence off of Moccasin Creek Road had an out building destroyed, widespread tree damage and minor damage to the primary residence. EPISODE NARRATIVE: A surface low rapidly deepened over NC during the early morning hours of April 15, 2007, as the parent upper level trough phased with the surface feature. A squall line of severe storms preceding a cold front moved through northeast Florida during the early morning hours of April 15th and produced multiple supercells. | |||||||||||
| 29.6 | 1974-05-12 | 2 | 30°17'N / 82°07'W | 30°17'N / 82°04'W | 3.30 Miles | 33 Yards | 0 | 1 | 250K | 0 | Baker |
| 32.7 | 1957-06-08 | 2 | 30°06'N / 81°46'W | 30°10'N / 81°42'W | 6.40 Miles | 27 Yards | 0 | 0 | 25K | 0 | Clay |
| 36.7 | 1974-05-12 | 2 | 30°05'N / 81°41'W | 30°05'N / 81°37'W | 4.30 Miles | 100 Yards | 0 | 2 | 250K | 0 | Duval |
| 42.1 | 1960-06-04 | 2 | 30°00'N / 81°41'W | 0 | 0 | 3K | 0 | Clay | |||
| 45.4 | 2001-03-29 | 2 | 29°52'N / 81°45'W | 30°02'N / 81°40'W | 12.00 Miles | 150 Yards | 0 | 0 | 1.1M | 0 | Clay |
| Brief Description: Tornado was mainly F0-F1. Large trees were uprooted and power lines were blown down. Two homes were destroyed, 4 with major damage, and 50 with minor damage. A total of 56 homes in the Highlands Avenue area were damaged. | |||||||||||
| 46.4 | 1963-02-24 | 2 | 31°12'N / 81°24'W | 1.00 Mile | 33 Yards | 0 | 0 | 3K | 0 | Glynn | |
| 48.0 | 1971-02-07 | 2 | 29°57'N / 82°02'W | 2.00 Miles | 33 Yards | 0 | 0 | 25K | 0 | Clay | |
| 49.5 | 1971-02-07 | 2 | 29°57'N / 82°06'W | 2.00 Miles | 33 Yards | 0 | 1 | 25K | 0 | Bradford | |
* 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.