Hail history for Potter County, PA

Potter County has 36 recorded hail events in the NOAA Storm Events Database — 18 of them 1″ or larger and 2 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on May 31, 2002.

Records 1950–present Data through April 2026 Peak month June

Core sample · every recorded event, 1955–2026

Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.

Recorded events 36 since 1970

1″ or larger 18 NWS severe threshold

2″ or larger 2 hen egg class and up

Largest recorded 2.5″ tennis ball · May 31, 2002

Read the record honestly: Storm Events contains what was reported to the National Weather Service. Sparse or rural counties under-report, and coverage improved sharply after the mid-1990s — a quiet-looking stretch is not proof nothing fell.

When it hails in Potter County

Recorded events by month, 1950–present. The amber bar marks Potter County's peak: June.

Most recent recorded events

Latest 8 of 36 recorded events · data through April 2026
Date	Size	Comparable to
September 21, 2024	0.75″	Penny
September 21, 2024	2.0″	Hen egg
September 21, 2024	1.25″	Half dollar
August 21, 2014	1.25″	Half dollar
August 21, 2014	1.0″	Quarter
September 11, 2013	1.0″	Quarter
September 2, 2013	1.75″	Golf ball
July 7, 2012	1.0″	Quarter

Looking for a specific storm? Use the did-it-hail date lookup for Potter County.

From the storm reports

Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).

September 21, 2024 · 2.0″ (hen egg)

A severe thunderstorm produced oblong hail with a maximum size of two inch diameter hail south of Brookland. Multiple hail stones between one to two inches fell for approximately thirty minutes, with one to two inches of hail accumulating in a yard.

September 21, 2024 · 1.25″ (half dollar)

A severe thunderstorm produced half dollar sized hail in Ulysses Township. There was hail covering the ground along State Route 49 from this slow-moving severe thunderstorm.

May 31, 2002 · 2.5″ (tennis ball)

Tennis ball sized hail was reported in Harrison Valley.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	0	2	2	12	8	9	3

The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.

Questions about hail in Potter County

Has it ever hailed in Potter County?

Yes — 36 hail events have been recorded for Potter County, PA in the NOAA Storm Events Database since 1970, including 18 of 1″ (quarter size) or larger.

When did it last hail in Potter County?

The most recent recorded hail event for Potter County, PA is September 21, 2024, with 0.75″ (penny) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.

What is the largest hail ever recorded in Potter County?

2.5″ (tennis ball), recorded on May 31, 2002. Hail that size meets or exceeds the National Weather Service severe threshold. See how big that really is on the actual-size hail chart.

Does a recorded hail event mean my roof was damaged?

No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.

More Pennsylvania hail history

All 67 Pennsylvania counties, ranked by recorded hail →

Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.