NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Hermiston, 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 Hermiston, Oregon since records began in 1851. Since 1950, 7 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 7
- 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 Hermiston
The strongest of the 7 tornadoes within 25 miles was an F2 on June 26, 1958; its path came within 23 miles. Of the 7, one had a path within 5 miles of the city centre, and 4 have come since 2000. The most recent tornado was on June 11, 2022. Of the 149 Oregon cities on this site, 59% have more tornadoes within 25 miles than Hermiston. Hail has been reported within 10 miles 10 times since 1991, with stones up to 2.75 inches (baseball size). Hermiston has more hail reports within 10 miles than 89% of the 149 Oregon cities.
Compare Hermiston's storm record with another city →
Tornadoes within 25 miles of Hermiston
By decade
- 2020s1
- 2000s3
- 1990s1
- 1950s2
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 26, 1958 | F2 | 23 mi | 0.3 mi | 0 / 0 |
| May 19, 2006 | F1 | 19 mi | 0.1 mi | 0 / 0 |
| May 23, 2004 | F0 | 7 mi | 0.1 mi | 0 / 0 |
| Jul 13, 2002 | F0 | 24 mi | 0.2 mi | 0 / 0 |
| Jul 9, 1995 | F0 | 3 mi | 0.1 mi | 0 / 0 |
| May 9, 1956 | F0 | 18 mi | 10.2 mi | 0 / 0 |
| Jun 11, 2022 | Unrated | 24 mi | 0.02 mi | 0 / 0 |
The strongest 7 of 7, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Hermiston
The Storm Prediction Center has 10 hail reports within 10 miles of Hermiston since 1991, made on 9 separate days. Of these, 5 were 1 inch across or larger, and 2 reached 2 inches. The largest, 2.75 inches (baseball size), fell on July 9, 1995. The most recent report is from July 20, 2012. August has the most reports, 4.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Hermiston
The nearest NOAA station with 1991–2020 climate normals is Hermiston 2 NW, OR, 2 miles northwest of Hermiston at 460 feet. July is the warmest, with an average high of 89°F and low of 56°F; December is the coolest, at 42°F and 26°F. January is the wettest at 1.3 inches of precipitation on average and July and August the driest at 0.2 inches; the year adds up to 8.9 inches over 31 days with at least a tenth of an inch. Highs reach 90°F on about 46 days a year, almost all from May to September. Lows fall below freezing on about 122 nights a year. That 8.9 inches is more than at 4 of the 77 Oregon stations used on this site (5%). Umatilla, 5 miles northwest, has its own station (Mcnary Dam #2, OR): 8.1 inches a year, 0.8 less than here, and the same July average high, 89°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 42 | 26 | 1.3 | 4 |
| Feb | 48 | 26 | 0.8 | 3 |
| Mar | 58 | 31 | 0.8 | 3 |
| Apr | 66 | 37 | 0.8 | 2 |
| May | 74 | 45 | 0.9 | 3 |
| Jun | 81 | 51 | 0.7 | 2 |
| Jul | 89 | 56 | 0.2 | 0 |
| Aug | 89 | 54 | 0.2 | 1 |
| Sep | 80 | 46 | 0.3 | 1 |
| Oct | 66 | 36 | 0.8 | 3 |
| Nov | 51 | 29 | 1.1 | 3 |
| Dec | 42 | 26 | 1.0 | 4 |
| Year | 65 | 39 | 8.9 | 31 |
Averages for 1991–2020 at Hermiston 2 NW, OR (460 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 Hermiston
Since 1996, the National Weather Service has logged 36 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Hermiston: 35 thunderstorm wind reports and 1 flood. None is recorded as killing or injuring anyone; the NWS estimated $166,000 in property and crop damage. The strongest thunderstorm gust on record here was 86 mph, on May 19, 2006.
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
Umatilla County, which includes Hermiston, has been named in 15 federal disaster or emergency declarations since 1964, 8 of them major disasters (by incident: 5 fires, 4 floods, 2 biological emergencies, 2 severe storms). The latest major disaster declaration was Wildfires, on January 1, 2025. FEMA's National Risk Index gives Umatilla County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively Moderate for inland flooding, strong wind and heat waves; Relatively Low for hail and lightning; Very Low for tornadoes. It models the county's expected loss from all 18 hazards it covers at $40.0 million a year, the 17th highest of 36 Oregon counties; of the hazards above, the largest share, $17.7 million (44%), 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.