Mount Greenwood Hail — Storm History & NOAA Data for Mount Greenwood, IL

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 252 hail storms within 25 miles of Mount Greenwood, IL. Of those, 246 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 baseball-sized or larger, which can fracture shingle mat and dent metal flashing on contact. 2026 was the most active year on record locally, with 150 documented hail events.

Hail Severity Breakdown — Mount Greenwood Area (Last 5 Years)

Mount Greenwood Hail Storms by Year

2026 was the busiest hail year on record locally for Mount Greenwood, with 150 documented events inside the 25-mile radius. Storm activity in Mount Greenwood 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 Mount Greenwood Hail Storms

• July 28, 2026 — Destructive hail (egg-sized) reported near Oak Brook. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Mount Greenwood-area properties.
• July 27, 2026 — Significant hail (quarter-sized or larger) reported near Park Forest. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Mount Greenwood-area properties.
• July 27, 2026 — Significant hail (quarter-sized or larger) reported near 2 W Frankfort. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Mount Greenwood-area properties.
• July 27, 2026 — Significant hail (quarter-sized or larger) reported near 3 W York Center. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Mount Greenwood-area properties.
• July 27, 2026 — Severe hail (ping pong ball-sized) reported near Downers Grove. This storm met the quarter-size insurance damage threshold and is a candidate date when filing a claim for Mount Greenwood-area properties.

Recent Hail Events Near Mount Greenwood

Wind Storm History — Mount Greenwood Area (Last 5 Years)

NOAA has recorded 500 high-wind events within 25 miles of Mount Greenwood, IL in the past five years. Of those, 497 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 99 mph.

Recent Wind Events Near Mount Greenwood

Frequently Asked Questions About Mount Greenwood Hail

When was the last major hail storm in Mount Greenwood, IL?

The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Mount Greenwood was on July 28, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.

How often does it hail in Mount Greenwood?

Mount Greenwood averages roughly 50 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 246 of the 252 events recorded over the last five years.

How big does hail typically get in Mount Greenwood?

The largest documented hail near Mount Greenwood in the last five years was baseball-sized or larger. Most Mount Greenwood-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 IL?

Most homeowners insurance policies in IL 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 Mount Greenwood address?

Use the HailCheck address search to enter any street address in or near Mount Greenwood. 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 Mount Greenwood

If your property in or near Mount Greenwood 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 Mount Greenwood's Location Matters for Hail

Mount Greenwood 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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