NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Snohomish, WA
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 Snohomish, Washington 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 Snohomish
The highest rating among the 8 tornadoes within 25 miles is F2, reached 2 times; the most recent, on May 13, 1986, came within 22 miles. Of the 8, one had a path within 5 miles of the city centre, and 3 have come since 2000. The most recent tornado was on June 16, 2006. Snohomish has more tornadoes within 25 miles than 57% of the 226 Washington cities on this site. Hail has been reported within 10 miles once, in 2001, with stones of 0.75 inches (penny size). Snohomish has more hail reports within 10 miles than 46% of the 226 Washington cities.
Compare Snohomish's storm record with another city →
Tornadoes within 25 miles of Snohomish
By decade
- 2000s3
- 1990s1
- 1980s1
- 1970s2
- 1960s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 13, 1986 | F2 | 22 mi | 0.3 mi | 0 / 0 |
| Nov 24, 1970 | F2 | 15 mi | 0.3 mi | 0 / 0 |
| May 18, 2005 | F1 | 23 mi | 0.2 mi | 0 / 0 |
| Oct 26, 1971 | F1 | 9 mi | 3 mi | 0 / 0 |
| Jun 16, 2006 | F0 | 16 mi | 0.5 mi | 0 / 0 |
| Jun 5, 2004 | F0 | 25 mi | 0.1 mi | 0 / 0 |
| Aug 24, 1997 | F0 | 2 mi | 0.5 mi | 0 / 0 |
| Aug 18, 1964 | F0 | 24 mi | 5.2 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 Snohomish
The Storm Prediction Center has one hail report within 10 miles of Snohomish, from March 13, 2001: 0.75 inches (penny size).
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Snohomish
The nearest NOAA station with 1991–2020 climate normals is Monroe, WA, 5 miles southeast of Snohomish at 120 feet. August is the warmest, with an average high of 75°F and low of 52°F; December is the coolest, at 43°F and 32°F. November is the wettest at 7.2 inches of precipitation on average and July the driest at 1.2 inches; the year adds up to 50.8 inches over 119 days with at least a tenth of an inch. Highs reach 90°F on about 2 days a year, almost all from July. Lows fall below freezing on about 60 nights a year. Snowfall averages 3.0 inches a year, most of it in February. That 50.8 inches is more than at 63 of the 86 Washington stations used on this site (73%). Everett, 7 miles west, has its own station (Everett Snohomish Airport, WA): 33.4 inches a year, 17.4 less than here, and an August average high of 73°F against 75°F.
Sea level at the Seattle tide gauge, 24 miles from Snohomish, has risen 0.82 ± 0.03 inches per decade from 1899 to 2025, NOAA's linear trend; at that pace it is 8.2 inches in a hundred years. That is faster than at 42 of the 144 U.S. gauges with a NOAA trend.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 44 | 32 | 6.5 | 14 | 0.1 |
| Feb | 48 | 32 | 4.5 | 12 | 2.2 |
| Mar | 52 | 35 | 5.2 | 13 | 0.2 |
| Apr | 57 | 39 | 4.3 | 12 | 0.0 |
| May | 64 | 44 | 3.4 | 9 | 0.0 |
| Jun | 68 | 49 | 2.7 | 7 | 0.0 |
| Jul | 74 | 52 | 1.2 | 3 | 0.0 |
| Aug | 75 | 52 | 1.3 | 3 | 0.0 |
| Sep | 69 | 48 | 2.7 | 6 | 0.0 |
| Oct | 58 | 41 | 5.0 | 11 | 0.0 |
| Nov | 49 | 35 | 7.2 | 15 | 0.3 |
| Dec | 43 | 32 | 6.8 | 15 | 0.2 |
| Year | 58 | 41 | 50.8 | 119 | 3.0 |
Averages for 1991–2020 at Monroe, WA (120 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 Snohomish
Since 1996, the National Weather Service has logged 5 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Snohomish: 3 floods, 1 flash flood and 1 thunderstorm wind report. None is recorded as killing or injuring anyone; the NWS estimated $3.9 million in property and crop damage. The strongest thunderstorm gust on record here was 51 mph, on December 14, 2010.
November 4, 2006: flood 2 miles from the centre of Snohomish — $3.3 million damage.
NWS: “Record flooding occurred on the Cowlitz, Nooksack, Puyallup, Nisqually, |Skykomish, Stillaguamish, Carbon, Snoqualmie, and Bogachiel. Major flooding occurred on the Tolt, Snohomish, Skokomish, Skagit, and White rivers.”
January 12, 2021: flood 10 miles from the centre of Snohomish — $474,000 damage.
November 12, 2008: flood 6 miles from the centre of Snohomish — $100,000 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 Snohomish's 2 ZIP codes have filed 390 claims with the National Flood Insurance Program since 1978, and were paid $6.7 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1990: 111 claims (28% of all) and $2.2 million, then Torrential rain in 2006 with 26 and 2025-12-AtmosphericRiver in 2025 with 13. The year with the most claims was 2009, with 95. 39% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 128 Washington cities on this site with 10 or more claims, 123 have fewer than Snohomish.
| Event | Claims | Paid |
|---|---|---|
| Flooding1990 | 111 | $2.2 million |
| Torrential rain2006 | 26 | $623,000 |
| 2025-12-AtmosphericRiver2025 | 13 | $696,000 |
Snohomish County, which includes Snohomish, has been named in 37 federal disaster or emergency declarations since 1964, 32 of them major disasters (by incident: 15 severe storms, 13 floods, 2 biological emergencies, 2 earthquakes). The latest major disaster declaration was Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides, on April 7, 2026. FEMA's National Risk Index gives Snohomish County a Relatively High rating for natural hazard risk overall; by hazard: Relatively High for inland flooding, lightning and heat waves; Relatively Moderate for coastal flooding; Relatively Low for tornadoes; Very Low for hail and strong wind. It models the county's expected loss from all 18 hazards it covers at $409.2 million a year, the 3rd highest of 39 Washington counties; of the hazards above, the largest share, $111.9 million (27%), 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.