Local Data Search

 
USA.com / California / Napa County / Saint Helena, CA / Natural Disasters and Weather Extremes

Saint Helena, CA Natural Disasters and Weather Extremes

 
Hot Rankings
Fastest / Slowest Growing Cities Nearby
Best / Worst Cities by Crime Rate Nearby
Richest / Poorest Cities by Income Nearby
Expensive / Cheapest Homes Nearby
Most / Least Educated Cities Nearby
Fastest / Slowest Growing Cities in CA
High / Low CA Cities by Males Employed
High / Low CA Cities by Females Employed
Best / Worst Cities by Crime Rate in CA
Richest / Poorest Cities by Income in CA
Expensive / Cheapest Homes by City in CA
Most / Least Educated Cities in CA

The chance of earthquake damage in Saint Helena is much lower than California average and is much higher than the national average. The risk of tornado damage in Saint Helena is about the same as California average and is much lower than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #530

Saint Helena, CA
17.62
California
21.80
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, #575

Saint Helena, CA
0.0055
California
0.0068
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, #981

Saint Helena, CA
9.84
California
18.56
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 220 other weather extremes events within 50 miles of Saint Helena, CA were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:0Cold:0Dense Fog:6Drought:0
Dust Storm:0Flood:93Hail:13Heat:2Heavy Snow:1
High Surf:1Hurricane:0Ice Storm:0Landslide:0Strong Wind:20
Thunderstorm Winds:11Tropical Storm:0Wildfire:2Winter Storm:1Winter Weather:0
Other:70 

Volcanos Nearby

A total of 1 volcano is found in or near Saint Helena, CA.

Distance (miles)NameRegionLatitudeLongitudeElevation (foot)TypeStatusLast Eruption
36.1Clear LakeUS-California, United States38.97-122.771439Volcanic fieldHoloceneUndated, but probable Holocene eruption

Historical Earthquake Events

A total of 59 historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Saint Helena, CA.

Distance (miles)DateMagnitudeDepth (km)LatitudeLongitude
45.21906-04-188.32538-123
12.11969-10-025.7N/A38.45-122.68
12.21969-10-025.6N/A38.47-122.69
12.41969-10-025.6N/A38.46-122.69
43.31955-10-245.4N/A37.97-122.05
36.51955-05-075N/A38.93-122.87
3.31956-04-054.8N/A38.53-122.52
46.51965-09-104.8N/A38-121.9
20.91973-09-174.7238.6-122.1
31.01963-12-304.7N/A38.8-122.9
13.71968-04-254.6N/A38.48-122.72
27.41933-05-164.5N/A38.63-122.95
31.51978-09-084.41738.64-121.91
49.41954-11-104.4N/A39.07-123.03
11.51969-10-024.3N/A38.49-122.68
27.91982-05-294.3338.8-122.82
27.51984-09-224.2138.8-122.81
7.81959-12-164.1N/A38.58-122.36
27.51985-05-234.1438.8-122.81
17.11977-09-224538.6-122.76
19.51977-09-084738.68-122.75
21.01969-05-084N/A38.7-122.17
22.51977-09-1141238.7-122.8
44.51977-01-0841037.9-122.18
13.41969-10-063.9N/A38.46-122.71
33.71980-12-123.9438.96-122.69
41.71951-07-243.9N/A37.92-122.27
47.11961-08-183.9N/A37.93-122
47.61960-12-153.9N/A38.03-121.83
12.31974-03-213.8238.6-122.66
14.91978-05-273.8938.54-122.74
21.71977-09-113.8938.68-122.8
26.31985-07-263.8238.79-122.79
34.21977-06-043.82638.2-121.97
43.91961-11-173.8N/A37.97-122.03
44.21977-01-083.8937.9-122.2
46.81969-03-133.8N/A38.03-121.85
48.01985-04-183.81439.11-122.03
49.61943-10-263.8N/A39.2-122.7
22.51966-12-233.7N/A38.7-122.8
28.71977-09-053.7838.19-122.12
36.31979-06-173.71638.1-122.04
43.21976-07-133.71038.09-121.87
45.31962-01-243.7N/A37.87-122.25
23.31948-04-183.6N/A38.17-122.53
39.91970-08-313.6838.1-121.94
46.31948-01-313.6N/A37.97-121.95
48.21942-08-143.6N/A37.98-121.88
48.41961-02-163.6N/A37.83-122.22
12.61969-10-023.5N/A38.5-122.7
15.51971-10-133.51038.33-122.65
27.21985-07-263.5238.8-122.8
31.01980-02-133.5638.95-122.53
32.21985-03-063.5238.94-122.68
36.71977-06-173.52238.18-121.93
40.71977-07-193.5238.05-121.99
47.11983-06-053.51338.01-121.87
47.31979-08-133.5937.86-122.17
47.61980-04-073.5537.84-122.23

Historical Tornado Events

A total of 1 historical tornado event that had recorded magnitude of 2 or above found in or near Saint Helena, CA.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
24.31958-06-01238°17'N / 122°59'W38°24'N / 122°45'W15.00 Miles50 Yards0025K0Sonoma


* 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.


 
The USA.com website and domain are privately owned and are not operated by or affiliated with any government or municipal authority.
© 2024 World Media Group, LLC.