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 222 hail storms within 25 miles of Brookfield, WI. Of those, 161 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 55 documented hail events.
Check Hail History for a Specific Address in Brookfield| Severity | Count | What it means for roofs |
|---|---|---|
| Destructive | 13 events | Egg-size, expect mat fractures and gutter damage |
| Severe | 24 events | Ping pong-size, granule loss and bruising common |
| Significant | 124 events | Quarter-size, the standard insurance damage threshold |
| Moderate | 61 events | Marble-size, possible cosmetic damage |
| Year | Reported Hail Events Within 25 mi |
|---|---|
| 2026 | 54 events |
| 2025 | 55 events |
| 2024 | 49 events |
| 2023 | 33 events |
| 2022 | 31 events |
2025 was the busiest hail year on record locally for Brookfield, with 55 documented events inside the 25-mile radius. Storm activity in Brookfield 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 |
|---|---|---|---|---|
| 2026-08-10 | 1 SW Mukwonago, WI | Significant | 1.00" | — |
| 2026-08-10 | 2 E Mukwonago, WI | Significant | 1.25" | Report from mPING: Half Dollar (1.25 in.). |
| 2026-08-10 | 1 W Hales Corners, WI | Moderate | 0.75" | Report from mPING: Dime (0.75 in.). |
| 2026-07-27 | Eagle Lake, WI | Significant | 1.00" | — |
| 2026-07-27 | Waterford, WI | Significant | 1.00" | — |
| 2026-07-27 | 1 W Oconomowoc, WI | Destructive | 2.50" | — |
| 2026-07-27 | 1 SW Lac La Belle, WI | Significant | 1.25" | — |
| 2026-07-27 | 1 ESE Lac La Belle, WI | Severe | 1.75" | — |
| 2026-07-27 | 1 NE Oconomowoc, WI | Destructive | 2.00" | — |
| 2026-07-27 | 1 S Delafield, WI | Significant | 1.00" | — |
| 2026-07-03 | 3 ESE Jackson, WI | Significant | 1.00" | Trained spotter reports 1 inch diameter hail in Jackson. |
| 2026-04-21 | 4 SE Wind Lake, WI | Significant | 1.00" | Report from mPING: Quarter (1.00 in.). |
| 2026-04-21 | UNION GROVE HRNR ARP, WI | Significant | 1.00" | — |
| 2026-04-21 | Greenfield, WI | Significant | 1.00" | Observation with pictures. |
| 2026-04-21 | 6 E Wind Lake, WI | Moderate | 0.88" | — |
| 2026-04-21 | GREENFIELD, WI | Significant | 1.00" | Pictures provided. |
| 2026-04-21 | NORTH CAPE, WI | Moderate | 0.88" | — |
| 2026-04-21 | (MKE)MITCHELL APT MI, WI | Significant | 1.00" | — |
| 2026-04-21 | 2 WSW Saint Francis, WI | Significant | 1.00" | Milwaukee Airport Observer pictures. |
| 2026-04-21 | (MKE)MITCHELL APT MI, WI | Significant | 1.00" | Pictures provided by the weather observer at Mitchell Field. |
NOAA has recorded 116 high-wind events within 25 miles of Brookfield, WI in the past five years. Of those, 114 reached severe-thunderstorm thresholds (58+ mph). The highest measured gust was 82 mph.
| Severity | Count |
|---|---|
| Severe | 27 events |
| Significant | 87 events |
| Moderate | 2 events |
| Date | Location | Gust (mph) | Severity | NOAA Comments |
|---|---|---|---|---|
| 2026-08-18 | 2 ENE Butler, WI | 56 | Significant | AWOS station KMWC Milwaukee Timmerman Airport reports 56 mph winds during thunderstorm. |
| 2026-07-27 | 2 SW North Prairie, WI | 62 | Significant | 62 MPH wind gust measured via home weather station. Time confirmed from radar data. |
| 2026-07-03 | 1 SE Menomonee Falls, WI | 64 | Severe | Private weather station measures 64 MPH wind gust. Time confirmed from radar. |
| 2026-06-11 | 2 WSW Saint Francis, WI | 53 | Significant | Mitchell airport. |
| 2026-06-11 | 2 NNW Saint Francis, WI | 40 | Moderate | Port of Milwaukee C-Man MLWW3. |
| 2026-06-10 | HARTFORD, WI | 60 | Significant | Public report of a downed tree near downtown Hartford. Wind gust estimated from radar data, nearby observations, and damage. |
| 2026-06-10 | LANNON, WI | 60 | Significant | Public report a small tree snapped half way up. Wind gust estimated from radar data and damage. |
| 2026-04-27 | KMKE Airport ASOS, WI | 77 | Severe | ASOS Peak Wind Report, 120-deg, 67-kt, 1832-zulu. |
| 2026-04-27 | 2 WSW Saint Francis, WI | 70 | Severe | More than 200 calls for downed trees and branches in Milwaukee. Some trees blocking roads, and resting on homes and vehicles. |
| 2026-04-27 | 2 ENE Shorewood, WI | 43 | Moderate | South southeast wind gust at 37 kt. |
| 2026-04-27 | 2 NNW Saint Francis, WI | 51 | Significant | Southeast wind gust to 44 kt. |
| 2026-04-17 | EAST TROY, WI | 64 | Severe | An uprooted tree. |
| 2026-04-17 | CADDY VISTA, WI | 81 | Severe | Total destruction of a greenhouse and damage to other outbuildings. Multiple trees uprooted and leaning to the north northeast. |
| 2026-04-14 | 4 SSE Sullivan, WI | 60 | Significant | — |
| 2026-04-14 | ROCHESTER FOX RVR AR, WI | 60 | Significant | Trained spotter reports uprooted trees and shingle damage from thunderstorm winds. |
| 2026-04-14 | LAKE BEULAH, WI | 64 | Severe | Several large tree downs. Another tree down on County Highway L just to the south. |
| 2026-04-14 | WEST ALLIS, WI | 58 | Significant | Multiple social media reports of trees and tree limbs down in southwest Milwaukee. |
| 2026-04-14 | 1 W Oconomowoc, WI | 60 | Significant | — |
| 2026-04-14 | OCONOMOWOC LAKE, WI | 81 | Severe | A swath of scattered tree and powerline damage across the county, but with heavier concentrations of damage in some areas. There was widespread tree damage on the west side of Lake Okauchee, and also a concentration of uprooted and snapped trees, including some felled on homes, near North Prairie. Another concentration of many snapped pine trees near the intersection of Waterville Rd. and Robinhood Dr. Another concentration of trees and powerlines down near Big Bend and yet another in the Sussex area. |
| 2026-04-14 | BUTLER, WI | 49 | Significant | Multiple social media reports of tree limbs and trees down in northern and western Milwaukee. |
The most recent quarter-size-or-larger hail storm recorded by NOAA within 25 miles of Brookfield was on August 10, 2026. HailCheck refreshes from the NOAA Storm Events database daily, so newer events appear here as they are reported.
Brookfield averages roughly 44 reported hail events per year within a 25-mile radius. Significant storms (quarter-size or larger) account for 161 of the 222 events recorded over the last five years.
The largest documented hail near Brookfield in the last five years was egg-sized. Most Brookfield-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 WI 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 Brookfield. 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 Brookfield 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 ValidationBrookfield 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.