Data current as of 2026-10-16 · Sourced from NOAA Storm Events
Over the past five years, the National Oceanic and Atmospheric Administration has recorded 17 hail storms within 25 miles of San Tan Valley, AZ. Of those, 10 produced hail at least quarter-size — the threshold most insurance carriers consider potentially damaging to asphalt shingles. The largest reported hail in this window was egg-sized, which can fracture shingle mat and dent metal flashing on contact. 2025 was the most active year on record locally, with 6 documented hail events.
Check Hail History for a Specific Address in San Tan Valley| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 1 event | Egg-size, expect mat fractures and gutter damage |
| Severe | 2 events | Ping pong-size, granule loss and bruising common |
| Significant | 7 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 7 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2025 | 6 events |
| 2024 | 3 events |
| 2023 | 3 events |
| 2022 | 5 events |
2025 was the busiest hail year on record locally for San Tan Valley, with 6 documented events inside the 25-mile radius. Storm activity in San Tan Valley typically peaks in spring and early summer, when the jet stream pushes Gulf moisture into the area and supercell thunderstorms become more frequent.
| Date | Location | Severity | Size | NOAA Comments |
|---|---|---|---|---|
| 2025-11-19 | HELENA, AZ | Significant | 1.00" | A photo shows a few hail stones, with the largest measuring up to 1.00 inch in diameter in the area of Loop 101 and U.S. 60 in Tempe. There was also a lot of 0.5 inch diameter hail reported. No damages or injuries reported. |
| 2025-10-13 | PALM SPGS, AZ | Destructive | 2.00" | Two-inch diameter hail measured at the area of U.S. 60 and South Idaho Road in Apache Junction. No damages or injuries reported. |
| 2025-09-26 | VELDA ROSE ESTATES, AZ | Moderate | 0.75" | Reports of 0.75 inch diameter hail between East Minton Street and Mallory Street in Mesa. No injuries or damage were reported. |
| 2025-09-26 | TEMPE, AZ | Significant | 1.00" | Social media image of hail around 1 inch in diameter in the vicinity of the Loop-101/US-60 interchange in Tempe. No damage or injuries reported. |
| 2025-09-26 | HIGHTOWN, AZ | Significant | 1.00" | Reports of 1 inch diameter hail near West Chandler Boulevard and Metro Boulevard in Chandler. No injuries or damage were reported. |
| 2025-09-26 | FLORENCE, AZ | Severe | 1.50" | Ping pong sized hail reported in Florence. No damages or injuries reported. |
| 2024-03-18 | HARMONY VILLA, AZ | Moderate | 0.75" | — |
| 2024-03-18 | (CHD)WILLIAMS AFB, AZ | Moderate | 0.75" | — |
| 2024-03-18 | PALM SPGS, AZ | Moderate | 0.75" | — |
| 2023-09-12 | SUN LAKES, AZ | Moderate | 0.75" | Public report of hailstones of 3/4 inch in diameter near Germann Rd and Dobson Rd. |
| 2023-09-12 | MESA FALCON ARPT, AZ | Significant | 1.00" | Photo evidence showed damage to the roofing system as the satellite antenna dish of a home located at 2139 North Recker Road in Mesa. Hailstones were estimated to be up to one inch in diameter. No injuries were reported. |
| 2023-09-12 | TWIN KNOLLS, AZ | Significant | 1.00" | Video showed hailstones up to one inch in diameter in the Mountain Bridge Neighbor in Mesa located just east of Loop 202. No damages or injuries were reported. |
| 2022-10-16 | MESA, AZ | Severe | 1.50" | Hailstones up to 1.5 inches in diameter reported near Brown Road and Gilbert Road in Mesa. No damages or injuries were reported. |
| 2022-10-15 | QUEEN CREEK, AZ | Significant | 1.00" | Hailstones up to 1 inch in diameter reported near Ellsworth Rd. and Riggs Rd in Queen Creek. No damages or injuries were reported. |
| 2022-09-02 | BOYS RANCH, AZ | Significant | 1.00" | — |
| 2022-09-02 | QUEEN VLY, AZ | Moderate | 0.88" | — |
| 2022-08-14 | NORTONS CORNER, AZ | Moderate | 0.75" | — |
NOAA has recorded 119 high-wind events within 25 miles of San Tan Valley, AZ in the past five years. Of those, 115 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 90 mph.
| Severity | Count |
|---|---|
| Severe | 26 events |
| Significant | 89 events |
| Moderate | 4 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-08-20 | 4 NNW East Mesa, AZ | 63 | Significant | The automated weather station at Falcon Field Airport reported a maximum wind gust of 63 mph. AWOS station KFFZ Mesa Falcon Fld. |
| 2026-08-20 | 1 SE Phoenix Mesa Gatew, AZ | 63 | Significant | The automated weather station at Mesa Gateway airport reported a maximum wind gust of 63 mph. AWOS station KIWA Mesa Gateway Airport. |
| 2026-08-20 | 3 SE Chandler, AZ | 59 | Significant | The automated weather station at Chandler Airport reported a maximum wind gust of 59 mph. AWOS station KCHD Chandler. |
| 2026-08-20 | 10 ESE Queen Creek, AZ | 61 | Significant | Corrects previous non-tstm wnd gst report from 10 ESE Queen Creek. An automated weather station reported a maximum wind gust of 61 mph as a thunderstorm outflow moved through the area. Mesonet station SRP22 10.9 NW Florence (SRP). |
| 2026-08-13 | 3 N Gilbert, AZ | 52 | Significant | Mesonet station AT933 Mesa. |
| 2026-08-10 | 6 ESE Coolidge, AZ | 53 | Significant | AWOS station KP08 Coolidge Muni. |
| 2026-07-21 | 4 NW East Mesa, AZ | 53 | Significant | — |
| 2026-07-14 | 20 NE Eloy, AZ | 50 | Significant | CWOP site recorded wind gust of 50 mph. |
| 2026-07-14 | 6 NE Mesa, AZ | 60 | Significant | NWS employee estimated wind gusts up to 60 mph with a thunderstorm outflow boundary that moved through the area. Gusts were estimated by the impacts on bent nearby trees and displaced patio furniture. |
| 2026-05-26 | 3 SE Chandler, AZ | 40 | Moderate | AWOS station KCHD Chandler. |
| 2026-05-25 | 4 NNW East Mesa, AZ | 44 | Moderate | AWOS station KFFZ Mesa Falcon Fld. |
| 2025-09-26 | FLORENCE, AZ | 58 | Significant | Minor wind damage reported at the corner of North Dogwood Road and Jakes Lane in Florence. A few broken windows. Report of a gustnado on the leading edge of the storm. No injuries reported. |
| 2025-09-26 | APACHE WELLS, AZ | 58 | Significant | Power line reported down from North 80th to North 88th Streets, between East Oak Street and East McDowell Road. No injuries reported. |
| 2025-09-26 | MAGMA, AZ | 58 | Significant | Downed powerlines reported along North Desert Sky Road in Florence. Wind gusts were estimated at 55-60 mph. No injuries reported. |
| 2025-09-01 | BORREES CORNER, AZ | 61 | Significant | Surface weather station AZM05 in Coolidge measured a 61 mph peak gust. |
| 2025-09-01 | MAGMA, AZ | 58 | Significant | Downed power lines along East Magma Road in San Tan Valley. Wind gusts were estimated at 55-60 mph. No injuries reported. |
| 2025-09-01 | MAGMA, AZ | 58 | Significant | Approximately 5-7 downed power poles on Attaway Road between Arizona Farms Road and Judd Road in San Tan Valley. Wind gusts were estimated at 55-60 mph. Timing based on radar. No injuries reported. |
| 2025-08-25 | DREAMLAND VILLA, AZ | 66 | Severe | A gust of 66 mph was measured at Mesa Falcon Field Airport (KFFZ). |
| 2025-08-25 | NORTONS CORNER, AZ | 55 | Significant | A large mesquite tree was uprooted at a park in Layton Lakes. No injuries were reported. |
| 2025-08-25 | GILBERT, AZ | 58 | Significant | Large light pole down near the intersection of N Greenfield Road and E Guadalupe Road. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of San Tan Valley was on November 19, 2025. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
San Tan Valley averages roughly 3 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 10 of the 17 events recorded over the last five years.
The largest documented hail near San Tan Valley in the last five years was egg-sized. Most San Tan Valley-area hail falls in the marble-to-quarter range, with destructive storms (egg-size or larger) appearing roughly once every few years.
Most homeowners insurance policies in AZ cover hail damage to roofs, siding, and gutters under the dwelling and other-structures coverage. Coverage typically requires the damage to be tied to a verifiable storm date — which is where the NOAA hail history above (and a HAAG-style test square validation) becomes important for the claim file.
Use the HailCheck address search to enter any street address in or near San Tan Valley. HailCheck returns every NOAA hail event within a configurable radius, along with severity bands, dates, and storm narratives for Pro members.
If your property in or near San Tan Valley took on hail during one of the storms above, the standard process for documenting damage is a 10×10 foot test square inspection. A HAAG-trained reviewer counts impact indicators — granule displacement, mat fractures, and bruising — within the marked square and produces a PASS or FAIL document for the claim file.
HailCheck offers a $99 photo-based HAAG-style test square validation. You submit photos from the field, our reviewer evaluates the impact indicators and cross-references the NOAA storm dates listed above, and a written PASS/FAIL determination is returned within one business day. We do not send anyone to the roof — the validation is built around the photos you submit.
Learn About $99 HAAG-Style ValidationSan Tan Valley sits east of the traditional hail alley, where hail events are less frequent than the central plains but tend to be associated with strong squall lines and tropical systems. Local roof systems are less commonly hardened for hail, which can mean even moderate impacts produce claim-worthy damage.