NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Happy Valley, OR
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 Happy Valley, Oregon since records began in 1851. Since 1950, 27 tornadoes have touched down within 25 miles, 1 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 27
- EF3 or stronger
- 1
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
6 deaths in all
What the records show for Happy Valley
The strongest of the 27 tornadoes within 25 miles was an F3 on April 5, 1972; its path came within 12 miles, and it killed 6 people. Of the 27, 2 had paths within 5 miles of the city centre, and 17 have come since 2000. October has had the most tornadoes, 10. The most recent tornado was on October 22, 2022. Happy Valley has more tornadoes within 25 miles than 95% of the 149 Oregon cities on this site. Hail has been reported within 10 miles 5 times since 1996, with stones up to 1 inch (quarter size). Happy Valley has more hail reports within 10 miles than 71% of the 149 Oregon cities.
Compare Happy Valley's storm record with another city →
Tornadoes within 25 miles of Happy Valley
By decade
- 2020s3
- 2010s8
- 2000s6
- 1990s6
- 1980s1
- 1970s1(1 EF3+)
- 1960s1
- 1950s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Apr 5, 1972 | F3 | 12 mi | 8.7 mi | 6 / 300 |
| Dec 8, 1993 | F2 | 20 mi | 6 mi | 0 / 0 |
| Dec 10, 2015 | EF1 | 22 mi | 0.82 mi | 0 / 0 |
| Jan 10, 2008 | EF1 | 18 mi | 10.11 mi | 0 / 0 |
| Oct 9, 2000 | F1 | 9 mi | 0.1 mi | 0 / 0 |
| Oct 9, 2000 | F1 | 21 mi | 0.1 mi | 0 / 0 |
| Nov 12, 1991 | F1 | 13 mi | 0.2 mi | 0 / 0 |
| Nov 12, 1991 | F1 | 10 mi | 0.2 mi | 0 / 0 |
| Apr 12, 1957 | F1 | 13 mi | 2.5 mi | 0 / 0 |
| Oct 22, 2022 | EF0 | 19 mi | 0.87 mi | 0 / 0 |
| Sep 27, 2021 | EF0 | 24 mi | 3.9 mi | 0 / 0 |
| Jun 13, 2020 | EF0 | 3 mi | 2 mi | 0 / 0 |
The strongest 12 of 27, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Happy Valley
The Storm Prediction Center has 5 hail reports within 10 miles of Happy Valley since 1996. Of these, one was 1 inch across or larger, and none reached 2 inches. The largest, 1 inch (quarter size), fell on September 14, 2006. The most recent report is from September 28, 2007.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Happy Valley
The nearest NOAA station with 1991–2020 climate normals is Oregon City, OR, 7 miles southwest of Happy Valley at 167 feet. August is the warmest, with an average high of 84°F and low of 58°F; December is the coolest, at 47°F and 36°F. December is the wettest at 7.2 inches of precipitation on average and July the driest at 0.5 inches; the year adds up to 44.7 inches. Highs reach 90°F on about 20 days a year, almost all from June to September. Lows fall below freezing on about 30 nights a year. That 44.7 inches is more than at 43 of the 77 Oregon stations used on this site (56%). Gresham, 6 miles northeast, has its own station (Portland Troutdale Airport, OR): 40.7 inches a year, 4.0 less than here, and an August average high of 82°F against 84°F.
| Month | High °F | Low °F | Precip. in |
|---|---|---|---|
| Jan | 48 | 37 | 6.5 |
| Feb | 53 | 38 | 4.5 |
| Mar | 58 | 40 | 4.8 |
| Apr | 64 | 43 | 3.8 |
| May | 71 | 48 | 2.5 |
| Jun | 76 | 53 | 1.8 |
| Jul | 84 | 57 | 0.5 |
| Aug | 84 | 58 | 0.6 |
| Sep | 78 | 53 | 1.6 |
| Oct | 65 | 47 | 4.2 |
| Nov | 53 | 41 | 6.7 |
| Dec | 47 | 36 | 7.2 |
| Year | 65 | 46 | 44.7 |
Averages for 1991–2020 at Oregon City, OR (167 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 Happy Valley
Since 1996, the National Weather Service has logged 55 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Happy Valley: 19 floods, 19 heavy rain events, 15 thunderstorm wind reports and 2 lightning strikes. They killed 4 people and injured 5, and the NWS estimated $2.0 million in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on April 22, 2005.
November 6, 2021: thunderstorm wind 8 miles from the centre of Happy Valley — 1 killed, 2 injured.
November 6, 2021: thunderstorm wind 10 miles from the centre of Happy Valley — 1 killed, 1 injured.
January 15, 1996: thunderstorm wind 3 miles from the centre of Happy Valley — 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
Clackamas County, which includes Happy Valley, has been named in 23 federal disaster or emergency declarations since 1964, 15 of them major disasters (by incident: 8 severe storms, 7 fires, 4 floods, 2 biological emergencies). 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 Clackamas County a Relatively High rating for natural hazard risk overall; by hazard: Relatively High for inland flooding, strong wind and lightning; Relatively Moderate for heat waves; Relatively Low for tornadoes; Very Low for hail and coastal flooding. It models the county's expected loss from all 18 hazards it covers at $219.1 million a year, the 4th highest of 36 Oregon counties; of the hazards above, the largest share, $76.6 million (35%), 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.