Hail History

Hail history for Reliance, South Dakota

NOAA hail reports in and within about 5 km (3 miles) of Reliance since 1986, with preliminary reports to November 3, 2026.

Readout · Reliance

Last hail
Jul 3, 2019
1.00 in, quarter size
Hail days, last 5 years
0
since Nov 3, 2021 · 0 reports
Largest ever
2.50 in
tennis ball · Aug 6, 1986

11 reports on 11 days since 1986 · #278 of 305 South Dakota places

Hail map · Reliance

Reliance Kennebec Oacoma Lower Brule Chamberlain Fort Thompson Pukwana Presho 20 mi
  • Under 1 in
  • 1–1.75 in
  • 1.75–2.5 in
  • 2.5–4 in
  • 4 in +
  • No size
11 most recent reports with a location; Lyman County is shaded. Open street map

For homeowners

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What the record says about Reliance

The latest hail report in and around Reliance is from July 3, 2019, 1.00 in (quarter size). There has been no hail report here in the five years since November 3, 2021.

Over the 20 years 2006–2025, Reliance logged 7 reports on 7 hail days, about 0.3 reports a year. That is 22% less than the median South Dakota town on this site (0.5 a year) and ranks #278 of 305 South Dakota cities and towns on this site for all-time reports. Reliance accounts for 5% of the 240 reports filed in Lyman County.

9% of reports with a size were 2 inches (hen egg) or larger, against 7% for the median South Dakota town on this site. The largest hail on record here is 2.50 in (tennis ball) on August 6, 1986.

The busiest year was 2010, with 2 reports on 2 days. Hail here peaks in July (55% of reports); 18% fall between April and June.

Reports a year 2006–2025 average

  • Reliance 0.3
  • Lyman County 6.9
  • Median South Dakota town on this site 0.5

Hail days 2006–2025

  • Reliance 7
  • Lyman County 70
  • Median South Dakota town on this site 7

Share 2 in or larger of sized reports

  • Reliance 9%
  • Lyman County 9%
  • Median South Dakota town on this site 7%

Hail over time

012 1986: 1 reports, largest 2.50 in 1990 1998: 1 reports, largest 0.75 in 1999: 1 reports, largest 1.00 in 2000 2002: 1 reports, largest 1.00 in 2007: 1 reports, largest 0.75 in 2008: 1 reports, largest 0.88 in 2010: 2 reports, largest 1.00 in 2010 2017: 1 reports, largest 1.50 in 2018: 1 reports, largest 1.00 in 2019: 1 reports, largest 1.00 in 2020
Reports per year, 1986–2026. Bar colour shows the largest hail that year. Reporting grew sharply after the mid-1990s, so early decades undercount.
0246 Jan Feb Mar Apr May June: 2 reports (18%) Jun July: 6 reports (55%) Jul August: 3 reports (27%) Aug Sep Oct Nov Dec
All 11 reports by calendar month.
Reports per month, 2017–2026. Darker cells had more reports.
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2026 0
2025 0
2024 0
2023 0
2022 0
2021 0
2020 0
2019 1 1
2018 1 1
2017 1 1

Largest hail on record

Largest hail reports in Reliance
Date Size Location County Time · source
Aug 6, 1986 2.50 intennis ball — Lyman 19:45 local · NCEI
Aug 12, 2017 1.50 inping pong ball 2 W Reliance Lyman 14:29 local · NCEI
Jul 3, 2019 1.00 inquarter 0.5 E Reliance Arpt Lyman 18:40 local · NCEI
Jul 18, 2018 1.00 inquarter 1.47 SSW Reliance Arpt Lyman 10:30 local · NCEI
Jul 10, 2010 1.00 inquarter 2.85 ENE Reliance Lyman 15:10 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 Reliance
Date Size Location County Time · source
Jul 3, 2019 1.00 inquarter 0.5 E Reliance Arpt Lyman 18:40 local · NCEI
Jul 18, 2018 1.00 inquarter 1.47 SSW Reliance Arpt Lyman 10:30 local · NCEI
Aug 12, 2017 1.50 inping pong ball 2 W Reliance Lyman 14:29 local · NCEI
Jul 10, 2010 1.00 inquarter 2.85 ENE Reliance Lyman 15:10 local · NCEI
Jul 6, 2010 1.00 inquarter 1.65 WSW Reliance Arpt Lyman 14:15 local · NCEI
Jun 5, 2008 0.88 innickel 2 SE Reliance Lyman 14:00 local · NCEI
Aug 6, 2007 0.75 inpenny Reliance Lyman 17:45 local · NCEI
Jul 24, 2002 1.00 inquarter Reliance Lyman 19:35 local · NCEI
Jul 18, 1999 1.00 inquarter 3 E Lyman Lyman 17:25 local · NCEI
Jun 10, 1998 0.75 inpenny Reliance Lyman 13:00 local · NCEI
Aug 6, 1986 2.50 intennis ball — Lyman 19:45 local · NCEI

Hail history near Reliance

Questions about hail in Reliance

How often does it hail in Reliance, South Dakota?

11 hail reports have been logged in and within about 5 km (3 miles) of Reliance since 1986. Over the 20 years 2006–2025 that averages 0.3 reports a year. That ranks #278 of 305 South Dakota places by number of reports.

When is hail season in Reliance?

Most reports come in July, August, June. July alone accounts for 55% of all reports.

What is the largest hail recorded in Reliance?

2.50 in (tennis ball size) on August 6, 1986. 9% of reports here were 2 inches or larger.

When did it last hail in Reliance?

The most recent report in this data is from July 3, 2019 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.

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

None: there has been no hail report in and within about 5 km (3 miles) of Reliance since November 3, 2021. The last one was on July 3, 2019.

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.