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 108 hail storms within 25 miles of Belvidere, IL. Of those, 104 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. 2026 was the most active year on record locally, with 59 documented hail events.
Check Hail History for a Specific Address in Belvidere| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 4 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 22 events | Ping pong-size, granule loss and bruising common |
| Significant | 78 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 4 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 59 events |
| 2025 | 15 events |
| 2024 | 12 events |
| 2023 | 16 events |
| 2022 | 6 events |
2026 was the busiest hail year on record locally for Belvidere, with 59 documented events inside the 25-mile radius. Storm activity in Belvidere 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 |
|---|---|---|---|---|
| 2026-08-21 | 2 N Machesney Park, IL | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-08-21 | 1 N Machesney Park, IL | Significant | 1.00" | Photo shared to email service account showing hailstones ranging in size between dime to quarter -- 0.5 to 1.0 inch -- in diameter. Time estimated by radar. |
| 2026-08-21 | 3 E Sycamore, IL | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-08-10 | 3 SSE Fontana-on-Geneva, WI | Significant | 1.00" | — |
| 2026-06-24 | MALTA, IL | Significant | 1.00" | A photo showed multiple hail stones of nickel size with one stone of quarter size near Rich Road and Schafer Road. |
| 2026-06-24 | 3 N Malta, IL | Significant | 1.00" | Photo shared to social media shows multiple hail stones of nickel size and one stone of quarter size near Rich Road and Schafer Road. Time estimated by radar. |
| 2026-06-24 | BYRON, IL | Significant | 1.00" | — |
| 2026-06-24 | 2 NNE Byron, IL | Significant | 1.00" | Quarter size hail near Byron. Relayed via amateur radio. Time estimated by radar. |
| 2026-06-24 | HUNTLEY, IL | Significant | 1.00" | — |
| 2026-06-24 | 2 E Huntley, IL | Severe | 1.50" | Public report of 1.5 inch hail near Huntly. Relayed via mping. |
| 2026-06-24 | HUNTLEY, IL | Severe | 1.50" | — |
| 2026-06-24 | 1 NE Huntley, IL | Significant | 1.00" | — |
| 2026-04-17 | ROCKTON, IL | Significant | 1.00" | — |
| 2026-04-17 | South Beloit, IL | Severe | 1.50" | Relayed via mping. Time estimated by radar. |
| 2026-04-17 | South Beloit, IL | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-04-17 | South Beloit, IL | Moderate | 0.50" | Report from mPING: Half-inch (0.50 in.). |
| 2026-04-17 | South Beloit, IL | Severe | 1.50" | Report from mPING: Ping Pong Ball (1.50 in.). |
| 2026-04-17 | 3 W Rockton, IL | Significant | 1.00" | Relayed via mping. |
| 2026-04-17 | SOUTH BELOIT, IL | Severe | 1.50" | — |
| 2026-04-17 | 3 E South Beloit, IL | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
NOAA has recorded 273 high-wind events within 25 miles of Belvidere, IL in the past five years. Of those, 273 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 100 mph.
| Severity | Count |
|---|---|
| Destructive | 1 event |
| Severe | 108 events |
| Significant | 164 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-07-03 | 1 S Darien, WI | 63 | Significant | Private Weather Station. |
| 2026-07-03 | 2 SE Darien, WI | 100 | Destructive | *** 3 FATAL, 2 INJ *** NWS Storm Survey for Walworth County: Damage from south of Darien through Lake Delavan to Como occurred due to downburst winds and not a tornado. Estimated peak winds of 90-100mph from about 5-10 barns that were destroyed/heavily damaged and hundreds of trees that were snapped at the trunk or uprooted. Witnesses in the area described it as a three round burst of high winds. 2 injuries documented SW of Delavan Lake when 3 20 foot by 90 foot empty silos collapsed and fell on motorcyclists that were seeking shelter from a storm. 3 people drowned in a capsized boat on Geneva Lake from the winds associated with this storm. |
| 2026-06-28 | 3 NNW Marengo, IL | 53 | Significant | Personal weather station measured a wind gust of 53.2 mph. |
| 2026-06-28 | 3 N Poplar Grove, IL | 51 | Significant | Personal weather station measured a wind gust of 51 mph. |
| 2026-06-28 | 3 NNW Marengo, IL | 60 | Significant | Personal weather station measured a wind gust of 60.4 mph. |
| 2026-06-17 | 1 NW Cortland, IL | 51 | Significant | Measured at KDKB. Wind gust heard on dial in. |
| 2026-06-17 | 3 NW Sycamore, IL | 53 | Significant | Measured at KILSYCAM31. |
| 2026-06-11 | 4 NE Winnebago, IL | 62 | Significant | Peak gust measured on personal weather station. |
| 2026-06-11 | WEMPLETON, IL | 62 | Significant | A personal weather station measured a wind gust to 62 mph. |
| 2026-06-11 | BELVIDERE, IL | 63 | Significant | Two trees 1 to 2 feet in diameter were blown down at a high school. |
| 2026-06-11 | ESMOND, IL | 58 | Significant | Power lines were blown down near Mowers Road and Esmond Road. |
| 2026-06-11 | BELVIDERE, IL | 58 | Significant | A photo showed a large tree limb blocking part of Shaw Road between State Street and Newburg Road. |
| 2026-06-11 | BULL VALLEY, IL | 58 | Significant | Large tree limbs were broken near Fleming Road and Thompson Road. |
| 2026-06-11 | FONTANA, WI | 58 | Significant | Local official reports a large downed tree branch on Hill Street in the community of Walworth. Wind gust estimated from radar data. |
| 2026-06-10 | BELVIDERE, IL | 58 | Significant | A three inch diameter tree limb was blown down. |
| 2026-06-10 | 2 NE Union, IL | 60 | Significant | Trained spotter measured wind gust at Rt 176 and Franklinville Road east of Marengo. Time estimated by radar. |
| 2026-06-10 | 2 S Poplar Grove, IL | 58 | Significant | Personal weather station measured as the line of storms moved through. |
| 2026-06-10 | FRANKLINVILLE, IL | 60 | Significant | A wind gust to 60 mph was reported near Franklinville Road and Route 176. |
| 2026-06-10 | POPLAR GROVE AIRPORT, IL | 58 | Significant | A personal weather station measured a wind gust to 58 mph. |
| 2026-06-10 | HAMPSHIRE, IL | 58 | Significant | A broken tree limb fell onto power lines along Walker Road north of Allen Road. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Belvidere was on August 21, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Belvidere averages roughly 22 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 104 of the 108 events recorded over the last five years.
The largest documented hail near Belvidere in the last five years was egg-sized. Most Belvidere-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 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.
Use the HailCheck address search to enter any street address in or near Belvidere. 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 Belvidere 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 ValidationBelvidere 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.