Hail and tornadoes in Washtenaw County, MI

Since January 2021, radar estimated hail somewhere in Washtenaw County, MI on 34 days. The biggest estimate: 1.5 in or larger (ping-pong ball), on Thu, Jun 15, 2023. Hail was reported to the National Weather Service inside the county on 7 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail
36
since January 2021
1 inch or larger
16
days, estimated or reported
Largest radar estimate
1.5+ in
Thu, Jun 15, 2023
Largest reported
2 in
Thu, Jul 20, 2023

Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Radar-estimated hail on Thu, Jun 15, 2023 around the place, with the hail reported that day
Thu, Jun 15, 2023: radar-estimated hail around Washtenaw County, MI, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 178 hail reports in Washtenaw County, MI on 66 days, 6 of them 2 inches or larger. The largest: 2.75 in, near Dexter, on Thu, Mar 15, 2012.

By decade: 2000s: 71 · 2010s: 79 · 2020s: 28

Tornadoes since 1950

7 tornadoes have touched Washtenaw County, MI since 1950, 1 of them rated F3/EF3 or stronger.

Strongest

  • Thu, Mar 15, 2012 · EF3 · 7.57 mi long, 800 yd wide · near Hudson Mills
  • Wed, Apr 15, 2026 · EF1 · 1.71 mi long, 500 yd wide · near Ann Arbor
  • Tue, Jun 23, 2015 · EF1 · 4.33 mi long, 100 yd wide · near Rowes Corner
  • Fri, Jul 23, 2010 · EF0 · 0.61 mi long, 100 yd wide · near Stony Creek
  • Wed, Jun 23, 2010 · EF0 · 3.7 mi long, 75 yd wide · near York

Most recent

  • Wed, Apr 15, 2026 · EF1 · 1.71 mi long, 500 yd wide · near Ann Arbor
  • Tue, Jun 23, 2015 · EF1 · 4.33 mi long, 100 yd wide · near Rowes Corner
  • Thu, Mar 15, 2012 · EF3 · 7.57 mi long, 800 yd wide · near Hudson Mills
  • Fri, Jul 23, 2010 · EF0 · 0.61 mi long, 100 yd wide · near Stony Creek
  • Wed, Jun 23, 2010 · EF0 · 3.7 mi long, 75 yd wide · near York
  • Fri, Aug 24, 2007 · EF0 · 2.47 mi long, 50 yd wide · near Salem
  • Sat, Sep 30, 2006 · F0 · 0.2 mi long, 25 yd wide · near Ann Arbor

By decade: 2000s: 2 · 2010s: 4 · 2020s: 1

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

  • Thu, Sep 3, 2026

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Mon, Jul 27, 2026

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    Reported in the county
    • 1 in (Manchester, MI)
  • Fri, Jul 3, 2026

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Sat, May 9, 2026

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Mon, Mar 30, 2026

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Fri, Mar 6, 2026

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sat, Aug 16, 2025

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    Reported in the county
    • 1 in (2 E Pittsfield Township, MI)
  • Mon, Aug 11, 2025

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sat, Jul 12, 2025

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Mon, Nov 25, 2024

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Tue, Aug 27, 2024

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Mon, Aug 5, 2024

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Wed, Jun 19, 2024

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sun, May 19, 2024

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Tue, Feb 27, 2024
    Reported in the county
    • 1 in (2 SE Ypsilanti, MI)
  • Fri, Aug 11, 2023

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Thu, Jul 20, 2023

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    Reported in the county
    • 2 in (Ypsilanti, MI)
  • Fri, Jul 14, 2023

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    Reported in the county
    • 1 in (1 NNW Pittsfield, MI)
    • 1.25 in (1 N Whittaker, MI)
  • Tue, Jul 11, 2023

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Thu, Jun 15, 2023

    Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)

    Reported in the county
    • 1.75 in (Northfield, MI)
    • 1.25 in (5 S Pinckney, MI)
    • 1 in (Stony Creek, MI)
    • 1 in (2 SE Ypsilanti, MI)
    • 1.5 in (Worden, MI)
  • Tue, Sep 20, 2022

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Mon, Aug 22, 2022

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Wed, Aug 3, 2022

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Tue, Aug 2, 2022

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Wed, Jul 20, 2022

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Wed, Jun 15, 2022

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Thu, Jun 9, 2022

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Tue, May 31, 2022

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sat, May 14, 2022

    Radar estimate anywhere in the county: 1 in or larger (quarter)

    No hail reported in the county.

  • Tue, Aug 24, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Wed, Aug 11, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Tue, Jul 20, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Tue, Jun 29, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Mon, Jun 28, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sun, Jun 20, 2021

    Radar estimate anywhere in the county: 0.75 in or larger (penny)

    No hail reported in the county.

  • Sat, Jun 12, 2021
    Reported in the county
    • 1 in (DEXTER, MI)

Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.