Rock Springs Hail — Storm History & NOAA Data for Rock Springs, WY

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 1 hail storm within 25 miles of Rock Springs, WY. Of those, 1 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 quarter-sized or larger, which can fracture shingle mat and dent metal flashing on contact. 2023 was the most active year on record locally, with 1 documented hail event.

Hail Severity Breakdown — Rock Springs Area (Last 5 Years)

Rock Springs Hail Storms by Year

2023 was the busiest hail year on record locally for Rock Springs, with 1 documented event inside the 25-mile radius. Storm activity in Rock Springs typically peaks in spring and early summer, when the jet stream pushes Gulf moisture into the area and supercell thunderstorms become more frequent.

Notable Recent Rock Springs Hail Storms

• May 26, 2023 — Significant hail (quarter-sized or larger) reported near WINTON JCT. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Rock Springs-area properties.

Recent Hail Events Near Rock Springs

Wind Storm History — Rock Springs Area (Last 5 Years)

NOAA has recorded 46 high-wind events within 25 miles of Rock Springs, WY in the past five years. Of those, 46 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 71 mph.

Recent Wind Events Near Rock Springs

Frequently Asked Questions About Rock Springs Hail

When was the last major hail storm in Rock Springs, WY?

The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Rock Springs was on May 26, 2023. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.

How often does it hail in Rock Springs?

Rock Springs averages roughly 0 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 1 of the 1 events recorded over the last five years.

How big does hail typically get in Rock Springs?

The largest documented hail near Rock Springs in the last five years was quarter-sized or larger. Most Rock Springs-area hail falls in the marble-to-quarter range, with destructive storms (egg-size or larger) appearing roughly once every few years.

Does my insurance cover hail damage in WY?

Most homeowners insurance policies in WY 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.

How do I check hail history for a specific Rock Springs address?

Use the HailCheck address search to enter any street address in or near Rock Springs. HailCheck returns every NOAA hail event within a configurable radius, along with severity bands, dates, and storm narratives for Pro members.

What a HAAG-Style Test Square Validation Means in Rock Springs

If your property in or near Rock Springs 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.

Why Rock Springs's Location Matters for Hail

Rock Springs 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.

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