NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Grantsville, UT
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 Grantsville, Utah 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 Grantsville
The highest rating among the 3 tornadoes within 25 miles is F1, reached 2 times; the most recent, on May 3, 1993, came within 20 miles. Of the 99 Utah cities on this site, 90% have more tornadoes within 25 miles than Grantsville.
Compare Grantsville's storm record with another city →
Tornadoes within 25 miles of Grantsville
By decade
- 1990s2
- 1960s1
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 3, 1993 | F1 | 20 mi | 0.1 mi | 0 / 0 |
| Jul 25, 1991 | F1 | 13 mi | 10 mi | 0 / 0 |
| Jun 25, 1965 | F0 | 10 mi | 0.1 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 Grantsville
The Storm Prediction Center has no hail reports within 10 miles of Grantsville since 1955.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Grantsville
The nearest NOAA station with 1991–2020 climate normals is Grantsville 2W, UT, 10 miles southeast of Grantsville at 4,550 feet. July is the warmest, with an average high of 92°F and low of 64°F; January is the coolest, at 37°F and 19°F. Highs reach 90°F on about 58 days a year, almost all from May to September. Lows fall below freezing on about 142 nights a year. Snowfall averages 33.1 inches a year, most of it in December. That 11.4 inches is more than at 13 of the 58 Utah stations used on this site (22%). Tooele, 22 miles southeast, has its own station (Tooele, UT): 18.6 inches a year, 7.2 more than here, and a July average high of 91°F against 92°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 37 | 19 | 0.8 | 3 | 7.2 |
| Feb | 43 | 23 | 0.9 | 3 | 7.5 |
| Mar | 53 | 30 | 1.1 | 4 | 3.5 |
| Apr | 61 | 36 | 1.5 | 4 | 1.9 |
| May | 71 | 45 | 1.5 | 5 | 0.0 |
| Jun | 82 | 54 | 0.7 | 2 | 0.0 |
| Jul | 92 | 64 | 0.7 | 2 | 0.0 |
| Aug | 90 | 62 | 0.7 | 2 | 0.0 |
| Sep | 79 | 50 | 0.9 | 3 | 0.0 |
| Oct | 64 | 38 | 0.9 | 3 | 0.1 |
| Nov | 49 | 28 | 0.9 | 3 | 5.0 |
| Dec | 38 | 20 | 0.8 | 3 | 7.9 |
| Year | 63 | 39 | 11.4 | 35 | 33.1 |
Averages for 1991–2020 at Grantsville 2W, UT (4,550 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 Grantsville
Since 1996, the National Weather Service has logged 61 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Grantsville: 61 thunderstorm wind reports. None is recorded as killing or injuring anyone; the NWS estimated $53,000 in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on June 9, 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
Tooele County, which includes Grantsville, has been named in 11 federal disaster or emergency declarations since 1977, 5 of them major disasters (by incident: 4 floods, 3 fires, 2 biological emergencies, 1 coastal storm). The latest major disaster declaration was Covid-19 Pandemic, on April 4, 2020. FEMA's National Risk Index gives Tooele County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for strong wind and lightning; Relatively Low for heat waves; Very Low for tornadoes, hail and inland flooding. It models the county's expected loss from all 18 hazards it covers at $26.5 million a year, the 10th highest of 29 Utah counties; of the hazards above, the largest share, $3.7 million (14%), 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 Grantsville
- Tooele, UT22 mi
- Stockton, UT30 mi
- Magna, UT31 mi
- Herriman, UT35 mi
- West Valley City, UT36 mi
- West Jordan, UT36 mi
- Taylorsville, UT38 mi
- South Jordan, UT38 mi
- Riverton, UT39 mi
- Eagle Mountain, UT41 mi
- Murray, UT41 mi
- Midvale, UT41 mi
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