NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Prosser, 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 Prosser, Washington since records began in 1851. Since 1950, 3 tornadoes have touched down within 25 miles, 0 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 3
- 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 Prosser
The highest rating among the 3 tornadoes within 25 miles is F0 or EF0, reached 3 times; the most recent, on March 31, 2020, came within 24 miles. Of the 226 Washington cities on this site, 73% have more tornadoes within 25 miles than Prosser. Hail has been reported within 10 miles 4 times since 1970, with stones up to 1 inch (quarter size). Prosser has more hail reports within 10 miles than 79% of the 226 Washington cities.
Compare Prosser's storm record with another city →
Tornadoes within 25 miles of Prosser
By decade
- 2020s1
- 2010s1
- 2000s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Mar 31, 2020 | EF0 | 24 mi | 0.1 mi | 0 / 0 |
| Aug 13, 2014 | EF0 | 8 mi | 0.25 mi | 0 / 0 |
| Jun 7, 2004 | F0 | 12 mi | 0.5 mi | 0 / 0 |
The strongest 3 of 3, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Prosser
The Storm Prediction Center has 4 hail reports within 10 miles of Prosser since 1970. Of these, 2 were 1 inch across or larger, and none reached 2 inches. The largest size, 1 inch (quarter size), was reported on 2 days, most recently June 29, 2013. The most recent report is from June 29, 2013.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Prosser
The nearest NOAA station with 1991–2020 climate normals is Prosser, WA, in Prosser at 830 feet. July is the warmest, with an average high of 90°F and low of 60°F; December is the coolest, at 40°F and 26°F. December 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 8.8 inches over 29 days with at least a tenth of an inch. Highs reach 90°F on about 47 days a year, almost all from May to September. Lows fall below freezing on about 109 nights a year. That 8.8 inches is more than at 13 of the 86 Washington stations used on this site (15%). Grandview, 8 miles northwest, has its own station (Sunnyside, WA): 7.8 inches a year, 1.0 less than here, and a July average high of 88°F against 90°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 40 | 27 | 1.2 | 4 |
| Feb | 47 | 29 | 0.9 | 3 |
| Mar | 56 | 35 | 0.7 | 3 |
| Apr | 65 | 40 | 0.7 | 2 |
| May | 74 | 48 | 0.9 | 2 |
| Jun | 81 | 54 | 0.7 | 2 |
| Jul | 90 | 60 | 0.2 | 1 |
| Aug | 89 | 58 | 0.2 | 1 |
| Sep | 80 | 50 | 0.3 | 1 |
| Oct | 65 | 41 | 0.8 | 3 |
| Nov | 49 | 32 | 0.9 | 3 |
| Dec | 40 | 26 | 1.3 | 4 |
| Year | 65 | 41 | 8.8 | 29 |
Averages for 1991–2020 at Prosser, WA (830 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 Prosser
Since 1996, the National Weather Service has logged 9 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Prosser: 5 thunderstorm wind reports and 4 floods. None is recorded as killing or injuring anyone; the NWS estimated $529,000 in property and crop damage. The strongest thunderstorm gust on record here was 70 mph, on May 30, 2020.
January 8, 2009: flood 3 miles from the centre of Prosser — $453,000 damage.
NWS: “55 feet above flood stage.”
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
Benton County, which includes Prosser, has been named in 20 federal disaster or emergency declarations since 1964, 13 of them major disasters (by incident: 9 floods, 3 fires, 2 biological emergencies, 2 severe storms). The latest major disaster declaration was Covid-19 Pandemic, on March 22, 2020. FEMA's National Risk Index gives Benton County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively Moderate for inland flooding, lightning and heat waves; Relatively Low for hail and strong wind; Very Low for tornadoes. It models the county's expected loss from all 18 hazards it covers at $69.8 million a year, the 17th highest of 39 Washington counties; of the hazards above, the largest share, $40.3 million (58%), 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.
Cities near Prosser
- Grandview, WA8 mi
- Benton City, WA13 mi
- Mabton, WA14 mi
- Sunnyside, WA15 mi
- West Richland, WA20 mi
- Richland, WA22 mi
- Granger, WA23 mi
- Irrigon, OR25 mi
- Boardman, OR27 mi
- Kennewick, WA28 mi
- Umatilla, OR28 mi
- Zillah, WA29 mi
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