NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Roy, 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 Roy, Washington since records began in 1851. Since 1950, 12 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 12
- 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 Roy
The highest rating among the 12 tornadoes within 25 miles is F1 or EF1, reached 6 times; the most recent, on September 30, 2013, came within 11 miles. Of the 12, none had a path within 5 miles of the city centre, and 8 have come since 2000. June and September have had the most tornadoes, 3 each. The most recent tornado was on October 4, 2019. Roy has more tornadoes within 25 miles than 75% of the 226 Washington cities on this site. Hail has been reported within 10 miles once, in 1997, with stones of 1.5 inches (ping pong ball size). Roy has more hail reports within 10 miles than 46% of the 226 Washington cities.
Compare Roy's storm record with another city →
Tornadoes within 25 miles of Roy
By decade
- 2010s3
- 2000s5
- 1990s2
- 1980s1
- 1970s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Sep 30, 2013 | EF1 | 11 mi | 1 mi | 0 / 0 |
| Sep 6, 2009 | EF1 | 23 mi | 9.6 mi | 0 / 0 |
| May 27, 2004 | F1 | 23 mi | 0.2 mi | 0 / 0 |
| Jun 27, 2001 | F1 | 21 mi | 2.3 mi | 0 / 0 |
| May 31, 1997 | F1 | 19 mi | 0.5 mi | 0 / 0 |
| Jun 12, 1978 | F1 | 13 mi | 1.5 mi | 0 / 0 |
| Apr 27, 2014 | EF0 | 12 mi | 0.2 mi | 0 / 0 |
| Jan 28, 2006 | F0 | 12 mi | 0.5 mi | 0 / 0 |
| Oct 15, 2003 | F0 | 6 mi | 0.1 mi | 0 / 0 |
| Jun 23, 1996 | F0 | 24 mi | 0.4 mi | 0 / 0 |
| Sep 24, 1981 | F0 | 10 mi | 0.1 mi | 0 / 0 |
| Oct 4, 2019 | Unrated | 20 mi | 0.05 mi | 0 / 0 |
The strongest 12 of 12, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Roy
The Storm Prediction Center has one hail report within 10 miles of Roy, from September 1, 1997: 1.5 inches (ping pong ball size).
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Roy
The nearest NOAA station with 1991–2020 climate normals is Mcmillin Rsvr, WA, 17 miles northeast of Roy at 579 feet. August is the warmest, with an average high of 77°F and low of 53°F; December is the coolest, at 45°F and 33°F. November is the wettest at 7.1 inches of precipitation on average and July and August the driest at 0.9 inches; the year adds up to 45.2 inches over 110 days with at least a tenth of an inch. Highs reach 90°F on about 3 days a year, almost all from July. Lows fall below freezing on about 60 nights a year. Snowfall averages 5.6 inches a year. That 45.2 inches is more than at 56 of the 86 Washington stations used on this site (65%). Yelm, 6 miles southwest, has its own station (Olympia Airport, WA): 50.8 inches a year, 5.6 more than here, and an August average high of 78°F against 77°F.
Water temperature at the NOAA tide station Tacoma, WA, 22 miles north, averaged 56°F in September and 48°F in March over 2021–2025. No month averaged 80°F. Sea level at the Seattle tide gauge, 45 miles from Roy, 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 | Water °F |
|---|---|---|---|---|---|---|
| Jan | 46 | 33 | 6.1 | 14 | 1.5 | 49 |
| Feb | 48 | 33 | 4.3 | 10 | 0.5 | 48 |
| Mar | 52 | 36 | 4.8 | 13 | 0.6 | 48 |
| Apr | 57 | 39 | 3.9 | 11 | 0.0 | 49 |
| May | 64 | 45 | 3.0 | 8 | 0.0 | 51 |
| Jun | 69 | 49 | 2.3 | 6 | 0.0 | 53 |
| Jul | 76 | 52 | 0.9 | 3 | 0.0 | 55 |
| Aug | 77 | 53 | 0.9 | 2 | 0.0 | 56 |
| Sep | 70 | 48 | 1.8 | 4 | 0.0 | 56 |
| Oct | 59 | 42 | 4.1 | 9 | 0.0 | 55 |
| Nov | 50 | 36 | 7.1 | 14 | 1.5 | 53 |
| Dec | 45 | 33 | 6.0 | 14 | 1.5 | 51 |
| Year | 59 | 42 | 45.2 | 110 | 5.6 | 52 |
Averages for 1991–2020 at Mcmillin Rsvr, WA (579 ft), from NOAA NCEI U.S. Climate Normals; water temperature: average of hourly readings 2021–2025 at the NOAA tide station Tacoma, WA, from NOAA Tides & Currents. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Flood insurance claims, disaster declarations and FEMA risk ratings
Pierce County, which includes Roy, has been named in 26 federal disaster or emergency declarations since 1964, 22 of them major disasters (by incident: 11 floods, 8 severe storms, 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 Pierce 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 and strong wind; Very Low for hail. It models the county's expected loss from all 18 hazards it covers at $531.9 million a year, the 2nd highest of 39 Washington counties; of the hazards above, the largest share, $121.6 million (23%), 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.