NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit American Canyon, 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 American Canyon, California since records began in 1851. Since 1950, 8 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 8
- 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 American Canyon
The highest rating among the 8 tornadoes within 25 miles is F0 or EF0, reached 8 times; the most recent, on April 27, 2016, came within 25 miles. Of the 8, none had a path within 5 miles of the city centre, and 3 have come since 2000. Of the 705 California cities on this site, 68% have more tornadoes within 25 miles than American Canyon. Hail has been reported within 10 miles 4 times since 1983, with stones up to 1.75 inches (golf ball size). American Canyon has more hail reports within 10 miles than 55% of the 705 California cities.
Compare American Canyon's storm record with another city →
Tornadoes within 25 miles of American Canyon
By decade
- 2010s2
- 2000s1
- 1990s3
- 1980s2
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Apr 27, 2016 | EF0 | 25 mi | 0.19 mi | 0 / 0 |
| Apr 7, 2011 | EF0 | 9 mi | 0.11 mi | 0 / 0 |
| Jan 11, 2005 | F0 | 20 mi | 0.1 mi | 0 / 0 |
| Dec 5, 1998 | F0 | 17 mi | 1.5 mi | 0 / 0 |
| May 12, 1998 | F0 | 13 mi | 0.2 mi | 0 / 0 |
| Dec 23, 1996 | F0 | 12 mi | 0.3 mi | 0 / 1 |
| Sep 18, 1989 | F0 | 19 mi | 0.2 mi | 0 / 0 |
| Sep 18, 1989 | F0 | 19 mi | 0.2 mi | 0 / 0 |
The strongest 8 of 8, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in American Canyon
The Storm Prediction Center has 4 hail reports within 10 miles of American Canyon since 1983. Of these, one was 1 inch across or larger, and none reached 2 inches. The largest, 1.75 inches (golf ball size), fell on August 19, 1983. The most recent report is from September 26, 2014.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in American Canyon
The nearest NOAA station with 1991–2020 climate normals is Napa Co Airport, CA, 3 miles northwest of American Canyon at 14 feet. August is the warmest, with an average high of 80°F and low of 54°F; December is the coolest, at 57°F and 38°F. January is the wettest at 4.2 inches of precipitation on average and July and August the driest at 0.0 inches; the year adds up to 20.3 inches over 37 days with at least a tenth of an inch. Highs reach 90°F on about 16 days a year, almost all from May to October. Lows fall below freezing on about 34 nights a year. That 20.3 inches is more than at 143 of the 226 California stations used on this site (63%). Crockett, 8 miles south, has its own station (Martinez Wtp, CA): 19.4 inches a year, 0.9 less than here, and an August average high of 87°F against 80°F.
Water temperature at the NOAA tide station Martinez-Amorco Pier, CA, 12 miles southeast, averaged 71°F in August and 51°F in January over 2021–2025. No month averaged 80°F. Sea level at the Port Chicago tide gauge, 14 miles from American Canyon, has risen 0.77 ± 0.23 inches per decade from 1976 to 2025, NOAA's linear trend; at that pace it is 7.7 inches in a hundred years. That is faster than at 36 of the 144 U.S. gauges with a NOAA trend.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Water °F |
|---|---|---|---|---|---|
| Jan | 57 | 38 | 4.2 | 6 | 51 |
| Feb | 61 | 40 | 4.0 | 7 | 53 |
| Mar | 64 | 42 | 3.0 | 6 | 55 |
| Apr | 68 | 44 | 1.3 | 3 | 60 |
| May | 73 | 48 | 0.8 | 2 | 64 |
| Jun | 78 | 52 | 0.2 | 0 | 67 |
| Jul | 79 | 55 | 0.0 | 0 | 69 |
| Aug | 80 | 54 | 0.0 | 0 | 71 |
| Sep | 80 | 51 | 0.1 | 0 | 69 |
| Oct | 75 | 46 | 0.9 | 2 | 66 |
| Nov | 65 | 40 | 2.0 | 4 | 59 |
| Dec | 57 | 38 | 3.8 | 7 | 53 |
| Year | 70 | 46 | 20.3 | 37 | 61 |
Averages for 1991–2020 at Napa Co Airport, CA (14 ft), from NOAA NCEI U.S. Climate Normals; water temperature: average of hourly readings 2021–2025 at the NOAA tide station Martinez-Amorco Pier, CA, from NOAA Tides & Currents. 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 American Canyon
Since 1996, the National Weather Service has logged 19 flood, rain, thunderstorm wind and lightning events that began within 10 miles of American Canyon: 15 floods, 2 heavy rain events, 1 flash flood and 1 lightning strike. They killed 1 person and injured 0, and the NWS estimated $45,000 in property and crop damage.
January 16, 2019: heavy rain event 10 miles from the centre of American Canyon — 1 killed.
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
Napa County, which includes American Canyon, 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.