NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Saint Helena, CA
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Saint Helena, California since records began in 1851. Since 1950, 11 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 11
- EF3 or stronger
- 0
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Saint Helena
The strongest of the 11 tornadoes within 25 miles was an F2 on June 1, 1958; its path came within 18 miles. Of the 11, none had a path within 5 miles of the city centre, and 3 have come since 2000. December has had the most tornadoes, 5. The most recent tornado was on April 27, 2016. Of the 705 California cities on this site, 55% have more tornadoes within 25 miles than Saint Helena. Hail has been reported within 10 miles 3 times since 1958, with stones up to 1 inch (quarter size). Of the 705 California cities, 44% have more hail reports within 10 miles than Saint Helena.
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Tornadoes within 25 miles of Saint Helena
By decade
- 2010s2
- 2000s1
- 1990s5
- 1980s1
- 1960s1
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 1, 1958 | F2 | 18 mi | 15 mi | 0 / 0 |
| Mar 18, 2011 | EF1 | 14 mi | 0.1 mi | 0 / 0 |
| Dec 5, 1998 | F1 | 14 mi | 1.5 mi | 0 / 0 |
| Feb 22, 1996 | F1 | 15 mi | 1 mi | 0 / 0 |
| Dec 2, 1992 | F1 | 18 mi | 3 mi | 0 / 0 |
| Dec 2, 1992 | F1 | 22 mi | 1 mi | 0 / 0 |
| Dec 2, 1992 | F1 | 18 mi | 7.5 mi | 0 / 0 |
| Feb 27, 1983 | F1 | 14 mi | 0.8 mi | 0 / 0 |
| Nov 10, 1964 | F1 | 19 mi | 1 mi | 0 / 0 |
| Apr 27, 2016 | EF0 | 18 mi | 0.19 mi | 0 / 0 |
| Dec 29, 2004 | F0 | 14 mi | 0.2 mi | 0 / 0 |
The strongest 11 of 11, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Saint Helena
The Storm Prediction Center has 3 hail reports within 10 miles of Saint Helena since 1958. Of these, one was 1 inch across or larger, and none reached 2 inches. The largest, 1 inch (quarter size), fell on July 28, 1958. The most recent report is from June 11, 2017.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Saint Helena
The nearest NOAA station with 1991–2020 climate normals is Saint Helena, CA, in Saint Helena at 225 feet. July is the warmest, with an average high of 89°F and low of 56°F; December is the coolest, at 58°F and 40°F. December is the wettest at 7.2 inches of precipitation on average and July and August the driest at 0.0 inches; the year adds up to 34.1 inches over 46 days with at least a tenth of an inch. Highs reach 90°F on about 55 days a year, almost all from May to October. Lows fall below freezing on about 14 nights a year. That 34.1 inches is more than at 190 of the 226 California stations used on this site (84%). Angwin, 4 miles north, has its own station (Angwin Pacific Union College, CA): 39.8 inches a year, 5.7 more than here, and a July average high of 85°F against 89°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 59 | 40 | 6.5 | 8 |
| Feb | 63 | 42 | 6.7 | 8 |
| Mar | 67 | 44 | 5.0 | 7 |
| Apr | 72 | 46 | 2.0 | 3 |
| May | 78 | 51 | 1.3 | 2 |
| Jun | 85 | 54 | 0.4 | 1 |
| Jul | 89 | 56 | 0.0 | 0 |
| Aug | 89 | 56 | 0.0 | 0 |
| Sep | 87 | 54 | 0.1 | 0 |
| Oct | 78 | 49 | 1.7 | 2 |
| Nov | 66 | 44 | 3.2 | 5 |
| Dec | 58 | 40 | 7.2 | 9 |
| Year | 74 | 48 | 34.1 | 46 |
Averages for 1991–2020 at Saint Helena, CA (225 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Saint Helena
Since 1996, the National Weather Service has logged 29 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Saint Helena: 18 floods, 7 heavy rain events, 3 flash floods and 1 thunderstorm wind report. None is recorded as killing or injuring anyone; the NWS estimated $147.5 million in property and crop damage. The strongest thunderstorm gust on record here was 58 mph, on February 19, 2024.
January 1, 2006: flood 9 miles from the centre of Saint Helena — $147.5 million damage.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
Flood insurance policyholders in Saint Helena's ZIP code 94574 have filed 111 claims with the National Flood Insurance Program since 1982, and were paid $3.3 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1995: 57 claims (51% of all) and $1.8 million. 54% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 415 California cities on this site with 10 or more claims, 328 have fewer than Saint Helena.
| Event | Claims | Paid |
|---|---|---|
| Flooding1995 | 57 | $1.8 million |
Napa County, which includes Saint Helena, has been named in 39 federal disaster or emergency declarations since 1964, 24 of them major disasters (by incident: 13 fires, 10 severe storms, 8 floods, 2 biological emergencies). The latest major disaster declaration was Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides, on April 3, 2023. FEMA's National Risk Index gives Napa County a Relatively High rating for natural hazard risk overall; by hazard: Relatively High for inland flooding; Relatively Moderate for coastal flooding; Relatively Low for lightning and heat waves; Very Low for tornadoes, hail and strong wind. It models the county's expected loss from all 18 hazards it covers at $186.0 million a year, the 27th highest of 58 California counties; of the hazards above, the largest share, $89.8 million (48%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Saint Helena
- Angwin, CA4 mi
- Yountville, CA9 mi
- Calistoga, CA10 mi
- Glen Ellen, CA11 mi
- Santa Rosa, CA15 mi
- Napa, CA16 mi
- Sonoma, CA16 mi
- Rohnert Park, CA17 mi
- Penngrove, CA18 mi
- Cotati, CA19 mi
- Windsor, CA19 mi
- Hidden Valley Lake, CA21 mi
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