Hail history in Santa Rosa, CA
On average, NOAA recorded hail within 15 miles of the center of Santa Rosa on 1.0 days a year from 2016 to 2025, 0.0 of them with hail 1 inch or larger. NOAA recorded hail within 15 miles of the center of Santa Rosa on 10 days since 2010. The largest hail reported was 0.25 in, in 2021. February has the most hail days, 3 since 2010. The most recent was March 10, 2021. NOAA also recorded high wind on 1 day, with gusts up to 58 mph.
Ranks #177 of 200 US cities for days with hail 1 inch or larger, 2016 to 2025.
- Hail days since 2010
- 10
- Largest hail
- 0.25 in
- Highest gust
- 58 mph
Source: NOAA/NWS Storm Prediction Center
Data through November 1, 2026
10 hail days within 15 miles since 2010, largest 0.25 in
Source: NOAA/NWS Storm Prediction Center
Data through November 1, 2026
Hail days by year
Bar chart of hail days per year, 2010 to 2026. 10 hail days in total; the most was 4 in 2018.
Hail days by month
Hail days by month since 2010: Jan 2, Feb 3, Mar 3, Apr 0, May 0, Jun 1, Jul 0, Aug 1, Sep 0, Oct 0, Nov 0, Dec 0.
Most recent hail days
| Date | Largest hail | Nearest report |
|---|---|---|
| Mar 10, 2021 | 0.25 in | 0.4 mi |
| Aug 17, 2020 | 0.25 in | 0.8 mi |
| Mar 25, 2020 | 0.25 in | 8.5 mi |
| Feb 15, 2019 | 0.25 in | 10.5 mi |
| Feb 26, 2018 | 0.25 in | 0.4 mi |
| Feb 22, 2018 | 0.25 in | 14.8 mi |
| Jan 25, 2018 | 0.25 in | 13.0 mi |
| Jan 19, 2018 | 0.25 in | 0.4 mi |
| Jun 11, 2017 | 0.25 in | 2.6 mi |
| Mar 5, 2017 | 0.25 in | 6.5 mi |
About this data
- Distances are from the center of Santa Rosa, not from any one property. Look up a street address below for a single building.
- Reports come from trained spotters and the public, so they cluster near towns and roads.
- No report does not mean no hail. Hail can fall where no one is there to report it.
- This is not a damage or insurance assessment.
1 high-wind day within 15 miles since 2010, strongest gust 58 mph
Source: NOAA/NWS Storm Prediction Center
Data through November 1, 2026
Most recent high-wind days
| Date | Highest gust | Nearest report |
|---|---|---|
| Feb 19, 2024 | 58 mph | 12.5 mi |
About this data
- Distances are from the center of Santa Rosa, not from any one property. Look up a street address below for a single building.
- Reports come from trained spotters and the public, so they cluster near towns and roads.
- No report does not mean no hail. Hail can fall where no one is there to report it.
- Wind speed is the highest reported gust; some reports have no speed.
- This is not a damage or insurance assessment.
Gusts, tornadoes and hurricanes in Santa Rosa
Estimated peak gusts
No day since October 1, 2021 had an estimated peak gust of 58 mph or more at Santa Rosa.
Estimates: the highest gust of each storm day in NOAA’s hourly 2.5 km wind analysis (URMA), which fills in between weather stations. Analyses like this smooth out short thunderstorm gusts, so they are best for widespread wind (hurricanes, winter storms, high wind days); for thunderstorm wind, NOAA’s wind reports are the better record. Not a measurement at any building.
Tornadoes within 10 miles
NOAA recorded 10 tornadoes whose path came within 10 miles of Santa Rosa since 1950; the strongest was rated EF2.
| Day | Rating | Path length | Closest |
|---|---|---|---|
| Mar 18, 2011 | EF1 | 0.1 miles | 0.5 miles |
| Dec 29, 2004 | EF0 | 0.2 miles | 0.4 miles |
| Dec 5, 1998 | EF1 | 1.5 miles | 0.4 miles |
| Feb 21, 1996 | EF1 | 1 miles | 7.3 miles |
| Dec 2, 1992 | EF1 | 3 miles | 9.5 miles |
| Dec 2, 1992 | EF1 | 7.5 miles | 4 miles |
| Dec 2, 1992 | EF1 | 1 miles | 7.4 miles |
| Feb 27, 1983 | EF1 | 0.8 miles | 0.4 miles |
| Nov 9, 1964 | EF1 | 1 miles | 7.7 miles |
| Jun 1, 1958 | EF2 | 15 miles | 4 miles |
Source: NOAA/NWS Storm Prediction Center. Ratings before 2007 are on the original Fujita scale.
Hurricanes and tropical storms
No hurricane or tropical storm in NOAA's records brought modeled tropical-storm-force winds (39 mph) to Santa Rosa.
Modeled from NOAA’s best tracks for open, flat ground; not measurements. How we model hurricane winds
No NOAA radar hail estimate within 15 miles since 2020
Source: NOAA MRMS radar (MESH), from October 14, 2020. Estimates of the largest hail in each 1 km cell, not measurements.
Storms in Santa Rosa
Northern California's strong, dry offshore winds, known as Diablo or north winds, are most frequent in fall and early winter.1 Many Diablo wind events are generally strongest at night.1
Notable storms
- November 19, 2024The Santa Rosa cooperative weather station measured 12.47 inches of rain from November 19 to 22, 2024, its wettest three-day period on record, and flooding closed Mark West Station Road.2,3
- March 10, 2021Accumulating small hail in Santa Rosa led to multiple vehicle accidents on Highway 101, according to the Santa Rosa Fire Department.4
- October 9, 2017Diablo winds gusted to 68 mph at the Santa Rosa RAWS weather station early on October 9, 2017, the second strongest northeast gust in a record dating to 1991. The winds drove the Tubbs Fire, which burned 36,807 acres in Napa and Sonoma counties.1,5,6
- March 18, 2011A cold front crossing Santa Rosa that morning spun up a brief tornado that NWS rated EF1, with estimated winds of 86 to 110 mph. It damaged a metal building and bent a gate, and fire crews found debris in the road and cable and telephone lines down.7,8
- February 15, 2011Southwest to west winds gusted to 60 mph in the North Bay interior valleys, toppling large trees and power lines and closing Porter Creek Road. NOAA's storm records list about $250,000 in property damage in the North Bay interior valleys zone.9
- December 5, 1998An F1 tornado touched down in Santa Rosa at about 6:20 p.m. and traveled 1.5 miles with a path up to 150 yards wide. NOAA's Storm Events Database lists $1 million in property damage.10
Warnings and alerts
In 2024, NWS San Francisco Bay Area split Sonoma County into 8 alerting zones for NOAA Weather Radio and the Emergency Alert System, while SAME code 006097 still receives alerts for the whole county.11 Sonoma County's free SoCoAlert service sends emergency notices, including flood and tsunami warnings, to residents and businesses by phone, text or email.12
Sources
- 1. Bulletin of the American Meteorological Society: The Northern California Wildfires of 8-9 October 2017: The Role of a Major Downslope Wind Event
- 2. NOAA NCEI Storm Events Database: Heavy Rain, Sonoma County, November 19, 2024
- 3. NOAA NCEI Storm Events Database: Flood, Sonoma County, November 20, 2024
- 4. NOAA NCEI Storm Events Database: Hail, Sonoma County, March 10, 2021
- 5. NOAA NCEI Storm Events Database: High Wind, North Bay Mountains, October 9, 2017
- 6. CAL FIRE: Tubbs Fire (Central LNU Complex)
- 7. NWS San Francisco Bay Area: Waterspouts and Tornadoes
- 8. NBC Bay Area: EF 1 Tornado Hit Santa Rosa
- 9. NOAA NCEI Storm Events Database: High Wind, North Bay Interior Valleys, February 15, 2011
- 10. NOAA NCEI Storm Events Database: Tornado, Sonoma County, December 5, 1998
- 11. NWS San Francisco Bay Area: Partial County Alerting: Sonoma County 2024
- 12. Sonoma County Department of Emergency Management: About SoCoAlert Notifications for Emergencies
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Questions about hail in Santa Rosa
Source: NOAA/NWS Storm Prediction Center
Data through November 1, 2026
- How often does it hail in Santa Rosa?
- NOAA recorded hail within 15 miles of the center of Santa Rosa on 1.0 days a year on average from 2016 to 2025, 0.0 of them with hail 1 inch or larger. Since 2010 it recorded 10 hail days.
- When is hail season in Santa Rosa?
- February has the most hail days within 15 miles of the center of Santa Rosa, 3 since 2010, then March (3) and January (2).
- What is the largest hail recorded in Santa Rosa?
- 0.25 in, in 2021: the largest hail NOAA recorded within 15 miles of the center of Santa Rosa since 2010.
- When did it last hail in Santa Rosa?
- NOAA's most recent hail report within 15 miles of the center of Santa Rosa is from March 10, 2021, with hail up to 0.25 in reported 0.4 miles from the center. Data through November 1, 2026.