Ann Arbor, MI · Storm history

Hail Reports in Ann Arbor, Michigan — Last 90 Days

NOAA Storm Prediction Center logged 1 hail report within 25 miles of Ann Arbor across 1 storm day, most recently on July 27, 2026. Source: SPC Local Storm Reports (preliminary, may be revised).

Data as of October 24, 2026 (last successful NOAA check). The newest report in the feed is from Oct 23, 2026. The 90-day log is SPC preliminary data. The county history (2017 to June 2026) is the NOAA Storm Events archive, 2014–June 2026; it has no storms after it ends.

  • 1.00 inlargest hail near the city, last 90 days (quarter size)
  • 16days with hail 1 in or larger in the county, 2014–June 2026
  • 56days with 58+ mph thunderstorm wind, 2014–June 2026
  • #104 of 209among the cities we cover, by hail days of 1 in or more

Has hail hit my Ann Arbor roof since it was installed?

County-level hail reports for Ann Arbor from the NOAA archive this page uses; a county report is not proof of damage at your Ann Arbor address.

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Hail near Ann Arbor in the last 90 days

  • 1.00 inLargest hail in 90 days (quarter size)
  • 1Hail day near Ann Arbor
  • 1SPC report
  • July 27, 2026Most recent event

Around Ann Arbor, the NOAA Storm Prediction Center logged 1 hail report within 25 miles between July 27 and July 27, 2026, spread over 1 storm day. That day brought stones of 1″ or more, and 0 of the 1 Ann Arbor reports with coordinates fell within 10 miles of the city center. In a typical year Ann Arbor sees about 3 hail-producing storms.

Ann Arbor's storm-climate context

Ann Arbor endures a full four-season Michigan climate that tests roofs year-round. Average seasonal snowfall of 58 inches imposes significant snow load and repeated freeze-thaw cycling that stresses flashing, gutters, and shingle adhesive strips. The record low of -23 F on February 11, 1885 illustrates how deep cold can make shingles brittle and crack sealants, while the record high of 105 F on July 24, 1934 signals intense UV summers that accelerate granule loss. Lake-effect moisture surges through late fall and early winter, adding ice dam risk to low-pitch roofs. Hail days through storm season are a secondary but real concern for asphalt shingles and gutters.

Ann Arbor's 2020 census population was 123,851. The University of Michigan anchors the economy with roughly 30,000 employees, including about 12,000 in its medical center, sustaining strong residential and institutional building stock. A dense concentration of high-tech firms including Duo Security, ProQuest, and KLA Corporation keeps professional-class homeownership high and supports steady demand for premium roofing work on well-maintained owner-occupied homes throughout the city.

How close the hail came

Of the 1 Ann Arbor reports, the closest landed 17.7 miles from the city center on July 27, 2026 (1.00″ at Manchester). July 27, 2026 was the heaviest day around Ann Arbor, with 1 report and a top stone of 1.00″. Stones of 1″ or more came on 1 of the 1 Ann Arbor-area hail day.

Hail reports by distance from the Ann Arbor city center, last 90 days
Distance from city centerReportsLargest
Within 5 miles0—
Within 10 miles0—
Within 25 miles11.00″

Distances are straight-line from the city center to each SPC report point; reports without coordinates are left out of the table.

Hail events near Ann Arbor by date

July 27, 2026 1 report, hail up to 1.00″ (quarter size)

Time (UTC)Hail sizeLocationDistance from Ann Arbor
0458 1.00″ Manchester, Washtenaw County 17.7 mi

The Ann Arbor tables above list preliminary Local Storm Reports from the NOAA Storm Prediction Center. Sizes are reported hailstone diameters; times are UTC. Reports can be added or corrected for about a day after each event. A quiet log does not mean no hail: small or unreported events happen. The closest report in this window landed 17.7 miles from Ann Arbor's center.

View the 1 Ann Arbor-area report on a map

On the Ann Arbor map, circle positions are the NOAA SPC report coordinates; tap a circle for the date and hail size.

Hail size: < 1″ 1–1.75″ ≥ 2″ not recorded

How severe was it? The NWS yardstick, applied to Ann Arbor's reports

  • 1 to 2 in (severe)1

The National Weather Service calls hail severe at 1″ (quarter size) and significant at 2″ (hen-egg size). Scoring Ann Arbor's 1 area report (filed in Washtenaw County) against that scale: 1 of the Ann Arbor reports met the severe 1″+ criterion — the size at which asphalt shingles start taking granule loss and bruising that shows up as leaks a season later. At these sizes, damage on a Ann Arbor roof is rarely visible from the ground, and homeowners policies typically cover it when it is documented promptly.

Hail history in Ann Arbor: the long picture

County-level NOAA records for the county behind Ann Arbor, 2014–June 2026. Each figure shows its source. Storms after the archive ends are not in these numbers. Ranks count from 1, the highest.

Ann Arbor against the 209 cities we cover

  • #104of 209Days with hail 1 in or larger in Ann Arbor: middle
  • #122of 209Days with hail 1.75 in or larger (golf ball) in Ann Arbor: middle
  • #85of 209Days with 58+ mph thunderstorm wind in Ann Arbor: middle
  • #177of 209Tornadoes in Ann Arbor: bottom quarter
  • #126of 209Reported storm property damage in Ann Arbor: middle
  • #61of 209Share of homes built before 1980 in Ann Arbor: middle

Hail events by year

Hail events per year in the county, 2017 to June 2026 8 2017 4 2018 4 2019 4 2020 3 2021 0 2022 16 2023 2 2024 1 2025 1 2026*
Hail events per year in the county, 2017 to June 2026
20178
20184
20194
20204
20213
20220
202316
20242
20251
2026*1

Ann Arbor's county peaked at 16 events in 2023, its busiest full year, out of 43 for 2017 to June 2026. In 2017–2026, a 0 means the archive holds no event for that year.

2026 covers only January to June: NOAA's file ends there, so it is not counted as the worst year or in the yearly average.

Source: NOAA Storm Events Database, county level, 2017–2026

Hail history at a glance

  • 43Hail events in the county, since 2017 (NOAA)
  • 2.00 inLargest hailstone on record
  • Mar 6, 2026Last recorded event in the archive

For Ann Arbor's county, NOAA records a most severe stone of 2.00″ and 43 hail events since 2017, close to 5 every year. Set against that baseline, the 1 hail day near Ann Arbor in the 90-day window above tracks close to the long-term average rate. Check your own Ann Arbor address on the hail risk lookup.

Compared to the Michigan county median of 13 hail events since 2017, Ann Arbor's county runs 3.3× above average.

Three ways a storm reaches a roof

Hail

  • 1 in or larger (quarter)16
  • 1.75 in or larger (golf ball)3

Ann Arbor's county days with at least one report at that size. Largest stone: 2.00 in.

Source: NOAA Storm Events Database, 2014–June 2026

Thunderstorm wind

56 Ann Arbor's county days with 58+ mph

58 mph is the NWS severe threshold. Strongest gust on record in Ann Arbor's county: 75 mph on May 13, 2014.

Source: NOAA Storm Events Database, 2014–June 2026

Tornadoes

2 in Ann Arbor's county

Strongest tornado in Ann Arbor's county: EF1 on the Enhanced Fujita scale.

Source: NOAA Storm Events Database, 2014–June 2026

Costliest storm day

Jun 15, 2023

11 reports that day (10 hail, 1 wind); reported property damage $1,001,000; county FIPS 26161, 2014–June 2026.

Source: NOAA Storm Events, 2014–June 2026

Peak storm month

July

In Ann Arbor's county, 59 of 199 hail, wind and tornado reports (30%) fell in July.

Source: NOAA Storm Events, 2014–June 2026

Older homes

64.3% of Ann Arbor homes built before 1980

About 35,000 of Ann Arbor's 53,715 housing units (share times units, rounded). Median year built: 1971. Housing units, not roofs: many Ann Arbor homes have been re-roofed since.

Source: Census ACS (Ann Arbor city), 2019–2023
Year-by-year table with the largest stone
YearRecorded hail eventsLargest stone
2026* 1 0.88″
2025 1 1.00″
2024 2 1.00″
2023 busiest largest stone 16 2.00″
2021 3 1.00″
2020 4 1.50″
2019 4 1.50″
2018 4 1.00″
2017 8 1.25″

NOAA Storm Events archive, Ann Arbor's county. Years missing from the table have no record in the archive. * 2026 covers only January to June: NOAA's file ends there, so it is not counted as the worst year or in the yearly average.

2023 was the standout hail year in Ann Arbor's county on both counts: the most recorded events (16) and the largest stone (2.00″).

In a market with repeat hail, impact-resistant Class 4 shingles often pay for themselves through insurer premium discounts — worth discussing with a Ann Arbor roofer if a recent event tips you into a replacement.

Ann Arbor, Michigan: Annarborskyline
Ann Arbor, MI. Photo: Gsgeorge, Public domain, via Wikimedia Commons.

Washtenaw County fact sheet for Ann Arbor homeowners

Housing age, federal disaster declarations and your state's claim deadlines in one place. All three come from public records, county level.

How old are the roofs? Homes in Washtenaw County by decade built

Share of Washtenaw County homes by decade built, percent 11.8% pre-1940 4.3% 1940s 9.1% 1950s 12.3% 1960s 15.4% 1970s 10.5% 1980s 16.0% 1990s 13.0% 2000s 6.4% 2010s 1.2% 2020+
Share of Washtenaw County homes by decade built, percent
pre-194011.8%
1940s4.3%
1950s9.1%
1960s12.3%
1970s15.4%
1980s10.5%
1990s16.0%
2000s13.0%
2010s6.4%
2020+1.2%

158,115 homes, median built in 1978. 52.9% date from before 1980 and 7.6% from 2010 on; 61.6% are owner-occupied. The most common decade is the 1990s.

Source: U.S. Census Bureau, American Community Survey · data as of ACS 5-year

What to do if your roof was in the hail path

Hail-bruised asphalt shingles — the kind of damage to look for after a storm near Ann Arbor; example photo, not a Ann Arbor roof
What hail bruising on asphalt shingles looks like. Example photo, not a Ann Arbor roof.
  1. Stay off the roof and read the yard instead. Hail came as near as 17.7 miles to Ann Arbor (Manchester, July 27, 2026) in the last 90 days. Granule piles under a Ann Arbor downspout and dents on gutters, vents and screens are the signs to look for.
  2. Document everything before any repair. July 27, 2026 is the worst day in the Ann Arbor log: 1 report, largest 1.00 in. Dated photos, a hailstone next to a coin and this NOAA log tie the loss to a specific storm day.
  3. Get a free inspection instead of guessing. The single hail day near Ann Arbor reached 1 inch or more, yet from the ground a Ann Arbor roof can look fine while bruising and granule loss sit on it. Only a roofer's written scope shows whether there is a claim.
  4. File on the policy's clock. Last hail day near Ann Arbor: 90 days ago. Check the policy for your reporting window and file soon, while the log dates are fresh.
  5. Bring the written scope to the adjuster. A Ann Arbor estimate stays honest when the adjuster receives your contractor's written scope. Step-by-step: the roof insurance claim guide.

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Hail in Ann Arbor — questions homeowners ask

When did hail last hit Ann Arbor, MI?
The most recent NOAA hail report within 25 miles of Ann Arbor is from July 27, 2026, with hail up to 1.00″.
How large was the hail near Ann Arbor?
The largest hailstone reported near Ann Arbor in the last 90 days measured 1.00″ — about quarter size. Ann Arbor had 1 hail day of 1″ or more, the size where asphalt shingles start to bruise; the biggest came on July 27, 2026.
Does homeowners insurance cover hail damage in Ann Arbor?
The latest hail day near Ann Arbor was July 27, 2026, 90 days ago, a date a claim can point to. Standard homeowners policies generally cover sudden storm damage and not gradual wear. For a Ann Arbor claim, document the damage before repairs, keep this NOAA log as proof of the July 27, 2026 event date, and read your own policy for its filing deadline: the policy sets that window, not a universal rule.
How often does hail hit the Ann Arbor area?
In Ann Arbor's county, NOAA's archive since 2017 shows 43 recorded hail events. Ann Arbor averages about 5 a year, and its biggest stone on record measured 2.00″.
How near to Ann Arbor did the nearest hail report fall?
On July 27, 2026, 17.7 miles from the Ann Arbor city center, 1.00 in. at Manchester: that is the nearest SPC report of the last 90 days.

Check your own ZIP in Ann Arbor

The county figures above average over everything inside the county line. For a score tied to your Ann Arbor address, run your ZIP through the hail risk lookup — Ann Arbor ZIP codes include 48104, 48103, 48109, 48105, 48106.

Ann Arbor neighborhoods — hail exposure varies by area

Hail paths track with storm cell movement, not city limits. If you're in Downtown Ann Arbor, Siena Heights, Westside, Kerrytown or Northfield, check your specific street against the report locations above — distance from Ann Arbor's center is listed for each report.

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More resources

Sources: NOAA Storm Prediction Center Local Storm Reports (last 90 days, preliminary) and the NOAA NCEI Storm Events Database (county of the city, 2014–June 2026); U.S. Census Bureau American Community Survey 5-year estimates (housing). The Storm Events archive used here ends in 2026, so storms between that date and the start of the 90-day log are not shown. How we collect data. Are you a roofer in Ann Arbor? See how requests reach contractors.

How to cite this page

Free to quote with credit, under CC BY 4.0, no permission needed. The numbers are NOAA Storm Prediction Center preliminary reports: unverified, and not confirmed damage to any roof. This is not an official NOAA or NWS product.