Hail history for Alamosa County, CO

Alamosa County has 14 recorded hail events in the NOAA Storm Events Database — 5 of them 1″ or larger and 1 at 2″ or larger. The largest on record: 2.5″ (tennis ball) on August 16, 2008.

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 14 since 1961

1″ or larger 5 NWS severe threshold

2″ or larger 1 hen egg class and up

Largest recorded 2.5″ tennis ball · August 16, 2008

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 Alamosa County

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

Most recent recorded events

Latest 8 of 14 recorded events · data through April 2026
Date	Size	Comparable to
September 22, 2013	0.88″	Nickel
June 6, 2010	0.75″	Penny
August 16, 2008	2.5″	Tennis ball
August 16, 2008	1.0″	Quarter
June 27, 2000	0.75″	Penny
October 1, 1998	0.88″	Nickel
July 18, 1998	0.75″	Penny
July 1, 1995	1.75″	Golf ball

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

From the storm reports

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

August 10, 1993 · 0.5″ (mothball)

Marble-size hail caused an estimated $75,000 damage to nine aircraft at the Alamosa Airport. In addition, the hail damaged vehicles in the airport parking lot, as well as destroying barley fields southwest of Alamosa.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
0	2	0	1	6	3	2	0

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 Alamosa County

Has it ever hailed in Alamosa County?

Yes — 14 hail events have been recorded for Alamosa County, CO in the NOAA Storm Events Database since 1961, including 5 of 1″ (quarter size) or larger.

When did it last hail in Alamosa County?

The most recent recorded hail event for Alamosa County, CO is September 22, 2013, with 0.88″ (nickel) 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 Alamosa County?

2.5″ (tennis ball), recorded on August 16, 2008. 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 Colorado hail history

All 64 Colorado 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.