Hail History

Hail history for Grand Blanc, Michigan

NOAA hail reports in and within about 5 km (3 miles) of Grand Blanc since 1997, with preliminary reports to November 3, 2026.

Readout · Grand Blanc

Last hail
May 15, 2025
0.88 in, nickel size
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
1.75 in
golf ball · Jul 3, 2012

18 reports on 17 days since 1997 · #33 of 130 Michigan places

Hail map · Grand Blanc

Grand Blanc Burton Goodrich Flint Holly Fenton Flushing Lapeer Otisville 10 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
18 most recent reports with a location; Genesee County is shaded. Open street map

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What the record says about Grand Blanc

The latest hail report in and around Grand Blanc is from May 15, 2025, 0.88 in (nickel size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 0.88 in on May 15, 2025.

Over the 20 years 2006–2025, Grand Blanc logged 11 reports on 10 hail days, about 0.6 reports a year. That is 57% more than the median Michigan town on this site (0.3 a year) and ranks #33 of 130 Michigan cities and towns on this site for all-time reports. Grand Blanc accounts for 8% of the 215 reports filed in Genesee County.

0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median Michigan town on this site. The largest hail on record here is 1.75 in (golf ball) on July 3, 2012 near 2.05 NW Grand Blanc.

Reports were down 90% in 2016–2025 (1) compared with 2006–2015 (10). The busiest year was 2008, with 3 reports on 3 days. Hail here peaks in May (28% of reports); 44% fall between April and June.

Reports a year 2006–2025 average

  • Grand Blanc 0.6
  • Genesee County 5.3
  • Median Michigan town on this site 0.3

Hail days 2006–2025

  • Grand Blanc 10
  • Genesee County 43
  • Median Michigan town on this site 5

Share 2 in or larger of sized reports

  • Grand Blanc 0%
  • Genesee County 4%
  • Median Michigan town on this site 0%

Hail over time

0123 1997: 1 reports, largest 0.75 in 1998: 1 reports, largest 0.75 in 1999: 1 reports, largest 1.00 in 2000: 1 reports, largest 0.75 in 2000 2001: 1 reports, largest 0.75 in 2003: 2 reports, largest 0.88 in 2005 2006: 2 reports, largest 0.75 in 2007: 1 reports, largest 0.75 in 2008: 3 reports, largest 1.00 in 2009: 1 reports, largest 0.88 in 2010 2012: 2 reports, largest 1.75 in 2013: 1 reports, largest 0.88 in 2015 2020 2025: 1 reports, largest 0.88 in 2025
Reports per year, 1997–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb March: 1 reports (6%) Mar Apr May: 5 reports (28%) May June: 3 reports (17%) Jun July: 5 reports (28%) Jul August: 3 reports (17%) Aug September: 1 reports (6%) Sep Oct Nov Dec
All 18 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 1 1
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
May 15, 2025 1 0.88 in —

Largest hail on record

Largest hail reports in Grand Blanc
Date Size Location County Time · source
Jul 3, 2012 1.75 ingolf ball 2.05 NW Grand Blanc Genesee 05:01 local · NCEI
Aug 7, 2008 1.00 inquarter 0.69 N Grand Blanc Genesee 16:15 local · NCEI
Jul 24, 1999 1.00 inquarter Grand Blanc Genesee 15:43 local · NCEI
May 15, 2025 0.88 innickel 0.69 N Grand Blanc Genesee 23:12 local · NCEI
Sep 11, 2013 0.88 innickel 2.45 SE Grand Blanc Genesee 16:30 local · NCEI

Size of every report

Most recent reports

Most recent hail reports in Grand Blanc
Date Size Location County Time · source
May 15, 2025 0.88 innickel 0.69 N Grand Blanc Genesee 23:12 local · NCEI
Sep 11, 2013 0.88 innickel 2.45 SE Grand Blanc Genesee 16:30 local · NCEI
Jul 3, 2012 0.75 inpenny 2.53 E Rankin Genesee 15:45 local · NCEI
Jul 3, 2012 1.75 ingolf ball 2.05 NW Grand Blanc Genesee 05:01 local · NCEI
Jun 8, 2009 0.88 innickel 1.38 S Grand Blanc Genesee 19:52 local · NCEI
Aug 13, 2008 0.75 inpenny 0.69 N Grand Blanc Genesee 17:13 local · NCEI
Aug 7, 2008 1.00 inquarter 0.69 N Grand Blanc Genesee 16:15 local · NCEI
Jun 6, 2008 0.88 innickel 0.86 NW Grand Blanc Genesee 18:10 local · NCEI
Jul 5, 2007 0.75 inpenny Grand Blanc Genesee 17:30 local · NCEI
May 25, 2006 0.75 inpenny Grand Blanc Genesee 17:13 local · NCEI
Mar 31, 2006 0.75 inpenny Grand Blanc Genesee 17:41 local · NCEI
Aug 21, 2003 0.75 inpenny Grand Blanc Genesee 19:30 local · NCEI

Hail history near Grand Blanc

Questions about hail in Grand Blanc

How often does it hail in Grand Blanc, Michigan?

18 hail reports have been logged in and within about 5 km (3 miles) of Grand Blanc since 1997. Over the 20 years 2006–2025 that averages 0.6 reports a year. That ranks #33 of 130 Michigan places by number of reports.

When is hail season in Grand Blanc?

Most reports come in May, July, June. May alone accounts for 28% of all reports.

What is the largest hail recorded in Grand Blanc?

1.75 in (golf ball size) on July 3, 2012 near 2.05 NW Grand Blanc. 0% of reports here were 2 inches or larger.

When did it last hail in Grand Blanc?

The most recent report in this data is from May 15, 2025 (0.88 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Grand Blanc had in the last five years?

1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was May 15, 2025.

Where does this hail data come from?

Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.