Hail history for Carnot-Moon, Pennsylvania
NOAA hail reports in and within about 5 km (3 miles) of Carnot-Moon since 1962, with preliminary reports to November 3, 2026.
Readout · Carnot-Moon
- Last hail
- Apr 2, 2025
- 1.00 in, quarter size
- Hail days, last 5 years
- 2
- since Nov 3, 2021 · 7 reports
- Largest ever
- 1.75 in
- golf ball · May 12, 1979
25 reports on 17 days since 1962 · #10 of 108 Pennsylvania places
Hail map · Carnot-Moon
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
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What the record says about Carnot-Moon
The latest hail report in and around Carnot-Moon is from April 2, 2025, 1.00 in (quarter size). Since November 3, 2021 there have been 2 separate hail days; the biggest stones in that time were 1.50 in on May 25, 2024.
Over the 20 years 2006–2025, Carnot-Moon logged 16 reports on 8 hail days, about 0.8 reports a year. That is 78% more than the median Pennsylvania town on this site (0.5 a year) and ranks #10 of 108 Pennsylvania cities and towns on this site for all-time reports. Carnot-Moon accounts for 6% of the 446 reports filed in Allegheny County.
0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median Pennsylvania town on this site. The largest hail on record here is 1.75 in (golf ball) on May 12, 1979.
Reports were up 120% in 2016–2025 (11) compared with 2006–2015 (5). The busiest year was 2025, with 5 reports on 1 day. Hail here peaks in April (32% of reports); 64% fall between April and June.
Reports a year 2006–2025 average
- Carnot-Moon 0.8
- Allegheny County 15.1
- Median Pennsylvania town on this site 0.5
Hail days 2006–2025
- Carnot-Moon 8
- Allegheny County 76
- Median Pennsylvania town on this site 6
Share 2 in or larger of sized reports
- Carnot-Moon 0%
- Allegheny County 2%
- Median Pennsylvania town on this site 0%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 5 | 5 | |||||||||||
| 2024 | 2 | 2 | |||||||||||
| 2023 | 0 | ||||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 0 | ||||||||||||
| 2020 | 0 | ||||||||||||
| 2019 | 2 | 2 | |||||||||||
| 2018 | 0 | ||||||||||||
| 2017 | 0 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Apr 2, 2025 | 5 | 1.00 in | — |
| May 25, 2024 | 2 | 1.50 in | — |
Largest hail on record
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| May 12, 1979 | 1.75 ingolf ball | — | Allegheny | 16:00 local · NCEI |
| May 25, 2024 | 1.50 inping pong ball | 2.32 NNE Cliff Mine | Allegheny | 16:40 local · NCEI |
| May 2, 2016 | 1.50 inping pong ball | 0.87 SW Moon | Allegheny | 03:06 local · NCEI |
| Mar 23, 2011 | 1.50 inping pong ball | 0.69 N Carnot | Allegheny | 16:00 local · NCEI |
| Apr 28, 2002 | 1.50 inping pong ball | Moon | Allegheny | 14:15 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
- Under 1 in 13 52%
- 1–2 in 12 48%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | County | Time · source |
|---|---|---|---|---|
| Apr 2, 2025 | 1.00 inquarter | 1.58 E (Pit)gtr Pittsburgh | Allegheny | 13:14 local · NCEI |
| Apr 2, 2025 | 0.75 inpenny | 0.69 N Stoops Ferry | Allegheny | 13:14 local · NCEI |
| Apr 2, 2025 | 0.88 innickel | 0.69 N Carnot | Allegheny | 13:13 local · NCEI |
| Apr 2, 2025 | 1.00 inquarter | 2.1 NW Moon | Allegheny | 13:10 local · NCEI |
| Apr 2, 2025 | 0.75 inpenny | 0.53 W Stoops Ferry | Allegheny | 13:10 local · NCEI |
| May 25, 2024 | 1.50 inping pong ball | 2.32 NNE Cliff Mine | Allegheny | 16:40 local · NCEI |
| May 25, 2024 | 1.00 inquarter | 2.14 SSW Moon Crest | Allegheny | 16:40 local · NCEI |
| Dec 1, 2019 | 0.75 inpenny | 0.69 N Carnot | Allegheny | 16:50 local · NCEI |
| Dec 1, 2019 | 0.88 innickel | 0.69 N Carnot | Allegheny | 16:48 local · NCEI |
| May 2, 2016 | 1.00 inquarter | 2.1 W Forest Grove | Allegheny | 03:09 local · NCEI |
| May 2, 2016 | 1.50 inping pong ball | 0.87 SW Moon | Allegheny | 03:06 local · NCEI |
| Jun 3, 2014 | 0.88 innickel | 0.69 N Carnot | Allegheny | 16:25 local · NCEI |
Hail history near Carnot-Moon
- Imperial 8 km · 26
- Aliquippa 11 km · 18
- Franklin Park 13 km · 18
- Economy 14 km · 19
- West View 16 km · 11
- Monaca 19 km · 10
- Pittsburgh 22 km · 81
- Industry 22 km · 15
Questions about hail in Carnot-Moon
How often does it hail in Carnot-Moon, Pennsylvania?
25 hail reports have been logged in and within about 5 km (3 miles) of Carnot-Moon since 1962. Over the 20 years 2006–2025 that averages 0.8 reports a year. That ranks #10 of 108 Pennsylvania places by number of reports.
When is hail season in Carnot-Moon?
Most reports come in April, May, July. April alone accounts for 32% of all reports.
What is the largest hail recorded in Carnot-Moon?
1.75 in (golf ball size) on May 12, 1979. 0% of reports here were 2 inches or larger.
When did it last hail in Carnot-Moon?
The most recent report in this data is from April 2, 2025 (1.00 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has Carnot-Moon had in the last five years?
2 separate days with hail reports since November 3, 2021, adding up to 7 reports. The most recent was April 2, 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.