NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Norco, 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 Norco, California since records began in 1851. Since 1950, 35 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 35
- 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 Norco
The strongest of the 35 tornadoes within 25 miles was an EF2 on May 22, 2008; its path came within 16 miles. Of the 35, none had a path within 5 miles of the city centre, and 12 have come since 2000. February has had the most tornadoes, 8. The most recent tornado was on February 23, 2023. Norco has more tornadoes within 25 miles than 85% of the 705 California cities on this site. Hail has been reported within 10 miles once, in 2006, with stones of 0.75 inches (penny size). Of the 705 California cities, 72% have more hail reports within 10 miles than Norco.
Compare Norco's storm record with another city →
Tornadoes within 25 miles of Norco
By decade
- 2020s1
- 2010s2
- 2000s9
- 1990s10
- 1980s6
- 1970s4
- 1960s2
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 22, 2008 | EF2 | 16 mi | 2.8 mi | 0 / 1 |
| Nov 11, 1997 | F1 | 23 mi | 0.2 mi | 0 / 0 |
| Jan 14, 1993 | F1 | 23 mi | 1 mi | 0 / 0 |
| Dec 7, 1992 | F1 | 22 mi | 0.1 mi | 0 / 0 |
| Mar 16, 1986 | F1 | 22 mi | 1.2 mi | 0 / 0 |
| Nov 9, 1982 | F1 | 25 mi | 0.2 mi | 0 / 0 |
| Jan 31, 1979 | F1 | 22 mi | 2 mi | 0 / 0 |
| Mar 16, 1977 | F1 | 15 mi | 10.9 mi | 0 / 4 |
| Nov 25, 1965 | F1 | 18 mi | 2 mi | 0 / 0 |
| Feb 23, 2023 | EF0 | 24 mi | 0.07 mi | 0 / 0 |
| Sep 9, 2012 | EF0 | 21 mi | 0.01 mi | 0 / 0 |
| Aug 12, 2012 | EF0 | 23 mi | 0.5 mi | 0 / 0 |
The strongest 12 of 35, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Norco
The Storm Prediction Center has one hail report within 10 miles of Norco, from April 5, 2006: 0.75 inches (penny size).
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Norco
The nearest NOAA station with 1991–2020 climate normals is Chino Airport, CA, 6 miles northwest of Norco at 650 feet. August is the warmest, with an average high of 96°F and low of 63°F; December is the coolest, at 69°F and 40°F. February is the wettest at 2.7 inches of precipitation on average and June and August the driest at 0.0 inches; the year adds up to 10.1 inches over 17 days with at least a tenth of an inch. Highs reach 90°F on about 99 days a year, almost all from March to November. Lows fall below freezing on about 11 nights a year. That 10.1 inches is more than at 42 of the 226 California stations used on this site (19%). Corona, 6 miles south, has its own station (Riverside Municipal Airport, CA): 9.3 inches a year, 0.8 less than here, and an August average high of 95°F against 96°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 70 | 42 | 2.2 | 3 |
| Feb | 70 | 43 | 2.7 | 4 |
| Mar | 73 | 46 | 1.4 | 2 |
| Apr | 77 | 49 | 0.6 | 1 |
| May | 81 | 54 | 0.2 | 1 |
| Jun | 88 | 59 | 0.0 | 0 |
| Jul | 94 | 63 | 0.1 | 0 |
| Aug | 96 | 63 | 0.0 | 0 |
| Sep | 93 | 60 | 0.1 | 0 |
| Oct | 85 | 53 | 0.5 | 1 |
| Nov | 76 | 45 | 0.6 | 1 |
| Dec | 69 | 40 | 1.7 | 3 |
| Year | 81 | 51 | 10.1 | 17 |
Averages for 1991–2020 at Chino Airport, CA (650 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 Norco
Since 1996, the National Weather Service has logged 60 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Norco: 21 flash floods, 19 floods, 10 heavy rain events, 8 thunderstorm wind reports and 2 lightning strikes. They killed 2 people and injured 1, and the NWS estimated $331,000 in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on August 9, 1998. January has had the most flash floods, 7 of 21. Of the 550 California cities on this site with a flash flood on record, 455 have had fewer than Norco.
January 5, 2008: flash flood 3 miles from the centre of Norco — 1 killed, 1 injured, $10,000 damage.
December 19, 2010: flood 8 miles from the centre of Norco — 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
Flood insurance policyholders in Norco's ZIP code 92860 have filed 25 claims with the National Flood Insurance Program since 1980, and were paid $251,000 for buildings and contents, in the dollars of each year. 40% 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, 125 have fewer than Norco.
Riverside County, which includes Norco, has been named in 66 federal disaster or emergency declarations since 1965, 31 of them major disasters (by incident: 38 fires, 13 floods, 7 severe storms, 2 biological emergencies). The latest major disaster declaration was Tropical Storm Hilary, on November 21, 2023. FEMA's National Risk Index gives Riverside County a Very High rating for natural hazard risk overall; by hazard: Very High for inland flooding; Relatively High for heat waves; Relatively Moderate for tornadoes, hail, strong wind and lightning; Very Low for hurricanes. It models the county's expected loss from all 18 hazards it covers at $2.27 billion a year, the 2nd highest of 58 California counties; of the hazards above, the largest share, $1.13 billion (50%), 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.