Hail History

Hail history for Johnson County, Tennessee

Every NOAA hail report filed in Johnson County since 1957, with preliminary National Weather Service reports to November 3, 2026.

Readout · Johnson County

Last hail
Sep 21, 2026
1.00 in, quarter size · preliminary
Hail days, last 5 years
1
since Nov 3, 2021 · 1 report
Largest ever
2.00 in
hen egg · Sep 10, 1957

24 reports on 22 days since 1957 · #90 of 96 Tennessee counties

Hail map · Johnson County

5 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
23 most recent reports with a location. Dot size and colour follow hail size. Open street map

For homeowners

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Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in Johnson County is from September 21, 2026. A local roofer can check and document it at no cost.

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What the record says about Johnson County

The latest hail report in Johnson County is from September 21, 2026, 1.00 in (quarter size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 1.00 in on September 21, 2026.

Over the 20 years 2006–2025, Johnson County logged 9 reports on 8 hail days, about 0.5 reports a year. That is 27% of the median Tennessee county (1.6 a year) and ranks #90 of 96 Tennessee counties for all-time reports. Johnson County holds 0% of all 7,198 hail reports in Tennessee.

4% of reports with a size were 2 inches (hen egg) or larger, against 4% for the median Tennessee county. The largest hail on record here is 2.00 in (hen egg) on September 10, 1957.

Reports were down 100% in 2016–2025 (0) compared with 2006–2015 (9). The busiest year was 2002, with 3 reports on 3 days. Hail here peaks in May (33% of reports); 67% fall between April and June.

Reports a year 2006–2025 average

  • Johnson County 0.5
  • Median Tennessee county 1.6

Hail days 2006–2025

  • Johnson County 8
  • Median Tennessee county 23

Share 2 in or larger of sized reports

  • Johnson County 4%
  • Median Tennessee county 4%

Hail over time

0123 1957: 1 reports, largest 2.00 in 1960 1970 1980 1990 1995: 1 reports, largest 1.00 in 1996: 1 reports, largest 0.75 in 1998: 2 reports, largest 1.25 in 1999: 2 reports, largest 0.75 in 2000: 2 reports, largest 1.75 in 2000 2001: 1 reports, largest 0.75 in 2002: 3 reports, largest 0.88 in 2005: 1 reports, largest 0.75 in 2006: 2 reports, largest 0.88 in 2007: 2 reports, largest 0.75 in 2008: 1 reports, largest 0.88 in 2010 2011: 1 reports, largest 0.88 in 2012: 1 reports, largest 1.00 in 2014: 1 reports, largest 1.00 in 2015: 1 reports, largest 1.00 in 2020 2026: 1 reports, largest 1.00 in
Reports per year, 1957–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
02468 Jan Feb Mar April: 3 reports (13%) Apr May: 8 reports (33%) May June: 5 reports (21%) Jun July: 3 reports (13%) Jul August: 1 reports (4%) Aug September: 3 reports (13%) Sep October: 1 reports (4%) Oct Nov Dec
All 24 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 1 1
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 0
2018 0
2017 0

Hail days since Nov 3, 2021

DateReportsLargestStorm page
Sep 21, 2026 1 1.00 in View

Largest hail on record

Largest hail reports in Johnson County
Date Size Location Time · source
Sep 10, 1957 2.00 inhen egg — 15:00 local · NCEI
Jul 28, 2000 1.75 ingolf ball Mountain City 17:10 local · NCEI
May 7, 1998 1.25 inhalf dollar Mountain City 20:50 local · NCEI
Sep 21, 2026 1.00 inquarter 2 N Mountain City 23:10 UTC · NWS prelim.
Apr 9, 2015 1.00 inquarter Trade 18:06 local · NCEI

Sizes filed before 1996 are often rough estimates (round numbers like 7.00 or 8.00 in) without an exact spot; they are shown as NOAA filed them.

Size of every report

Most recent reports

Most recent hail reports in Johnson County
Date Size Location Time · source
Sep 21, 2026 1.00 inquarter 2 N Mountain City 23:10 UTC · NWS prelim.
Apr 9, 2015 1.00 inquarter Trade 18:06 local · NCEI
Jul 27, 2014 1.00 inquarter 0.89 SE Laurel Bloomery 18:30 local · NCEI
Oct 18, 2012 1.00 inquarter 0.69 N Doeville 15:44 local · NCEI
Apr 9, 2011 0.88 innickel 4 W Laurel Bloomery 14:10 local · NCEI
Jun 9, 2008 0.88 innickel 0.89 SW Mountain City 16:39 local · NCEI
Jun 15, 2007 0.75 inpenny Butler 18:15 local · NCEI
Jun 15, 2007 0.75 inpenny Laurel Bloomery 17:00 local · NCEI
Sep 28, 2006 0.88 innickel Mountain City 14:20 local · NCEI
May 26, 2006 0.75 inpenny Laurel Bloomery 15:40 local · NCEI
Jul 27, 2005 0.75 inpenny 6 SW Mountain City 18:00 local · NCEI
Jun 2, 2002 0.75 inpenny Doeville 16:00 local · NCEI

Smaller places with fewer than 10 reports

These places have too few reports for a page of their own, so their record lives here.

PlaceReportsHail daysLatest
Mountain City98Sep 21, 2026
Butler22Jun 15, 2007

Questions about hail in Johnson County

How often does it hail in Johnson County, Tennessee?

24 hail reports have been logged in Johnson County since 1957. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #90 of 96 Tennessee counties by number of reports.

When is hail season in Johnson County?

Most reports come in May, June, April. May alone accounts for 33% of all reports.

What is the largest hail recorded in Johnson County?

2.00 in (hen egg size) on September 10, 1957. 4% of reports here were 2 inches or larger.

When did it last hail in Johnson County?

The most recent report in this data is from September 21, 2026 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

How many hail storms has Johnson County 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 September 21, 2026.

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.