Saint Bernard County Natural Disasters and Weather Extremes
The chance of earthquake damage in Saint Bernard County is about the same as Louisiana average and is much lower than the national average. The risk of tornado damage in Saint Bernard County is much lower than Louisiana average and is higher than the national average.
Earthquake Index, #44
| Saint Bernard County | 0.01 |
| Louisiana | 0.03 |
| 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
| Saint Bernard County | 0.0000 |
| Louisiana | 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, #58
| Saint Bernard County | 162.18 |
| Louisiana | 235.86 |
| 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 4,276 other weather extremes events within 50 miles of Saint Bernard 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: | 4 | Dense Fog: | 1 | Drought: | 4 |
| Dust Storm: | 0 | Flood: | 467 | Hail: | 1,039 | Heat: | 0 | Heavy Snow: | 2 |
| High Surf: | 0 | Hurricane: | 5 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 3 |
| Thunderstorm Winds: | 2,324 | Tropical Storm: | 8 | Wildfire: | 0 | Winter Storm: | 4 | Winter Weather: | 0 |
| Other: | 415 | ||||||||
Volcanos Nearby
No volcano is found in or near Saint Bernard County.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Saint Bernard County.
No historical earthquake events found in or near Saint Bernard County.
Historical Tornado Events
A total of 39 historical tornado events that had recorded magnitude of 2 or above found in or near Saint Bernard County.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 25.7 | 1982-04-20 | 2 | 30°16'N / 89°23'W | 30°18'N / 89°19'W | 5.00 Miles | 133 Yards | 0 | 0 | 250K | 0 | Hancock |
| 27.5 | 1977-09-05 | 2 | 30°19'N / 89°16'W | 0.10 Mile | 77 Yards | 0 | 0 | 250K | 0 | Harrison | |
| 27.6 | 1970-02-01 | 2 | 30°19'N / 89°14'W | 2.00 Miles | 33 Yards | 0 | 3 | 0K | 0 | Harrison | |
| 27.6 | 1972-03-02 | 2 | 30°18'N / 89°26'W | 30°18'N / 89°22'W | 4.10 Miles | 200 Yards | 0 | 2 | 250K | 0 | Hancock |
| 27.6 | 1977-05-02 | 2 | 30°17'N / 89°24'W | 30°20'N / 89°20'W | 5.40 Miles | 20 Yards | 0 | 0 | 25K | 0 | Hancock |
| 27.7 | 1972-05-07 | 2 | 30°18'N / 89°20'W | 30°20'N / 89°18'W | 3.30 Miles | 23 Yards | 0 | 1 | 25K | 0 | Hancock |
| 27.9 | 1980-05-19 | 3 | 30°14'N / 89°27'W | 30°23'N / 89°19'W | 13.10 Miles | 800 Yards | 0 | 8 | 25.0M | 0 | Hancock |
| 28.2 | 1982-04-20 | 2 | 30°18'N / 89°19'W | 30°21'N / 89°09'W | 13.00 Miles | 133 Yards | 0 | 0 | 250K | 0 | Harrison |
| 29.8 | 1972-05-07 | 2 | 30°21'N / 89°15'W | 1.20 Miles | 33 Yards | 0 | 0 | 25K | 0 | Harrison | |
| 30.4 | 1980-04-13 | 2 | 30°14'N / 89°37'W | 30°22'N / 89°25'W | 15.10 Miles | 300 Yards | 0 | 0 | 250K | 0 | Hancock |
| 30.4 | 1972-05-07 | 2 | 30°20'N / 89°18'W | 30°23'N / 89°16'W | 4.30 Miles | 23 Yards | 0 | 0 | 25K | 0 | Harrison |
| 32.8 | 1968-11-03 | 3 | 30°22'N / 89°05'W | 2.00 Miles | 123 Yards | 0 | 5 | 0K | 0 | Harrison | |
| 33.9 | 1967-10-30 | 3 | 30°23'N / 89°05'W | 2.00 Miles | 400 Yards | 4 | 17 | 25.0M | 0 | Harrison | |
| 35.8 | 1980-05-16 | 3 | 30°22'N / 89°09'W | 30°27'N / 88°59'W | 11.50 Miles | 800 Yards | 0 | 0 | 250K | 0 | Harrison |
| 36.5 | 1967-10-30 | 2 | 29°36'N / 89°45'W | 1.00 Mile | 10 Yards | 0 | 5 | 250K | 0 | Plaquemines | |
| 36.6 | 1980-05-19 | 3 | 30°23'N / 89°11'W | 30°29'N / 89°03'W | 10.60 Miles | 800 Yards | 0 | 4 | 2.5M | 0 | Harrison |
| 37.2 | 1985-09-23 | 2 | 30°26'N / 89°05'W | 1.00 Mile | 100 Yards | 0 | 0 | 250K | 0 | Harrison | |
| 37.2 | 2004-11-24 | 2 | 30°26'N / 89°05'W | 30°26'N / 89°05'W | 1.50 Miles | 50 Yards | 0 | 0 | 3.0M | 0 | Harrison |
| Brief Description: A tornado traveled east to west on path along Dedeaux Road between Highway 49 and Three Rivers Road in the Orange Grove community. Most of the damage was rated a F1 intensity by a NWS ground survey, however there were areas of F2 damage. A large church under-construction was heavily damaged or destroyed. Three homes and five businesses received major damage while twenty homes had minor damage. Early estimates were that damage would approach 3 million dollars. | |||||||||||
| 39.1 | 1980-04-13 | 3 | 30°22'N / 89°06'W | 30°30'N / 88°53'W | 15.90 Miles | 400 Yards | 0 | 25 | 25.0M | 0 | Harrison |
| 39.7 | 1988-03-03 | 2 | 30°24'N / 88°54'W | 1.20 Miles | 30 Yards | 0 | 0 | 250K | 0 | Harrison | |
| 40.0 | 1972-05-07 | 2 | 30°28'N / 89°03'W | 0.80 Mile | 33 Yards | 0 | 0 | 25K | 0 | Harrison | |
| 40.0 | 1994-04-12 | 2 | 30°28'N / 89°03'W | 2.00 Miles | 100 Yards | 2 | 15 | 5.0M | 0 | Harrison | |
| Brief Description: Twenty mobile homes were totally destroyed and four brick homes were partially destroyed. At least four businesses were damaged. The two deaths and the fifteen injuries all occurred in mobile homes. Numerous trees and power lines were blown down. Damage was estimated at near one million dollars. F57M M08M | |||||||||||
| 40.4 | 1973-04-07 | 2 | 30°28'N / 89°30'W | 0 | 0 | 25K | 0 | Hancock | |||
| 42.1 | 1958-02-26 | 2 | 30°25'N / 88°52'W | 30°25'N / 88°51'W | 1.30 Miles | 30 Yards | 0 | 0 | 25K | 0 | Harrison |
| 42.4 | 1965-03-01 | 2 | 29°21'N / 89°32'W | 0.50 Mile | 67 Yards | 0 | 1 | 25K | 0 | Plaquemines | |
| 42.4 | 1967-10-30 | 2 | 29°21'N / 89°32'W | 0.20 Mile | 10 Yards | 0 | 1 | 25K | 0 | Plaquemines | |
| 43.0 | 1961-09-11 | 2 | 30°20'N / 89°46'W | 30°20'N / 89°50'W | 4.30 Miles | 100 Yards | 0 | 2 | 25K | 0 | St. Tammany |
| 43.5 | 1987-11-16 | 2 | 30°31'N / 89°29'W | 30°32'N / 89°26'W | 3.00 Miles | 73 Yards | 0 | 0 | 250K | 0 | Hancock |
| 43.5 | 1971-05-08 | 2 | 30°25'N / 88°49'W | 0 | 0 | 25K | 0 | Jackson | |||
| 43.6 | 1980-05-19 | 2 | 30°27'N / 88°55'W | 30°29'N / 88°53'W | 3.60 Miles | 200 Yards | 0 | 0 | 250K | 0 | Harrison |
| 43.9 | 1985-05-21 | 2 | 30°23'N / 88°49'W | 30°25'N / 88°45'W | 3.50 Miles | 100 Yards | 0 | 0 | 250K | 0 | Jackson |
| 44.1 | 1995-05-08 | 2 | 29°57'N / 90°00'W | 0.80 Mile | 40 Yards | 0 | 0 | 250K | 0 | St. Bernard | |
| Brief Description: A strong tornado touched down briefly overturning eight railroad tank cars and heavily damaging several commercial buildings. Property damage was estimated. Tornado path width and length estimated. St Tammany Parish | |||||||||||
| 44.1 | 2004-11-24 | 2 | 30°18'N / 89°51'W | 30°21'N / 89°49'W | 4.00 Miles | 50 Yards | 0 | 4 | 750K | 0 | St. Tammany |
| Brief Description: A tornado touched down along an intermittent path approximately 4 miles long on the northwest side of Slidell. A NWS ground survey indicated that minor damage occurred to the south of US Highway 190 and near Centennial Park subdivision. The tornado continued to track north-northeast with the greatest damage, F2 intensity, occurring just southwest of the airport. The tornado damaged about 152 houses in the Bel Air subdivision off Airport Road with nine of the homes being declared uninhabitable. Four people received injuries during the storm and were treated at an area hospital and released. A wind gust of 70 mph (61 knots) was recorded at the automated weather equipment (ASOS) at the Slidell Airport. | |||||||||||
| 44.3 | 1953-07-17 | 2 | 29°57'N / 90°02'W | 30°01'N / 89°58'W | 6.40 Miles | 33 Yards | 0 | 2 | 250K | 0 | Orleans |
| 46.5 | 2007-02-13 | 2 | 30°00'N / 90°03'W | 30°01'N / 90°01'W | 1.00 Mile | 50 Yards | 1 | 10 | 1.0M | 0K | Orleans |
| Brief Description: EVENT NARRATIVE: A tornado touched down just south of the intersections of Franklin Avenue and Prentiss Street and moved east northeast across the southern portion of Pontchartrain Park to the Industrial Canal. Roofs were blown off of several homes and the upper portions of two story houses were partially collapsed. One fatality occurred when a travel trailer was destroyed and the 86 year old occupant was fatally injured. EPISODE NARRATIVE: Isolated supercell thunderstorms developed in the early morning hours over sections of southeast Louisiana well in advance of a squall line associated with a strong upper air storm system and cold front moving through the lower Mississippi Valley. These rogue rotating supercell storms produced tornadoes as well as large hail and isolated wind damage. A tornado in Jefferson Parish destroyed 23 houses and damaged 231 others. Tornadoes in Orleans Parish destroyed 32 houses and damaged 295 others. | |||||||||||
| 47.1 | 1981-06-22 | 2 | 29°57'N / 90°03'W | 2.30 Miles | 20 Yards | 0 | 0 | 25K | 0 | Orleans | |
| 47.1 | 1980-05-19 | 2 | 30°29'N / 88°53'W | 30°32'N / 88°51'W | 4.30 Miles | 33 Yards | 0 | 0 | 250K | 0 | Jackson |
| 47.6 | 1987-02-15 | 2 | 30°29'N / 89°42'W | 30°31'N / 89°41'W | 3.00 Miles | 100 Yards | 0 | 2 | 250K | 0 | Pearl River |
| 48.4 | 1964-10-03 | 2 | 29°58'N / 90°07'W | 30°02'N / 90°01'W | 7.70 Miles | 83 Yards | 0 | 2 | 2.5M | 0 | Orleans |
* 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.