States › Pennsylvania › Juniata County › Flood
Flood in Juniata County, Pennsylvania
22 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
NCEI records 22 flood events in Juniata County, Pennsylvania, between 1950 and 2026, spread over 12 years.
September is the busiest month, with 6 of the recorded events. The last 20 years account for 8 events against 14 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.3% of the 7,057 flood events recorded in Pennsylvania; its 5.6 per 100 square miles compares with 15.8 statewide.
NCEI attributes 4 deaths in the county to floods and flash floods.
Compared with Pennsylvania
| Measure | Juniata County | Pennsylvania | US |
|---|---|---|---|
| Flood events since 1950 | 22 | 7,057 | 183,559 |
| Per 100 square miles | 5.6 | 15.8 | 5.2 |
| Per 10,000 residents | 9.4 | 5.4 | 5.5 |
| Deaths recorded | 4 | 110 | 2,961 |
| Busiest month | September | July | June |
By year
Seasonality
4Feb
0Mar
3Apr
1May
1Jun
2Jul
3Aug
1Sep
6Oct
0Nov
0Dec
1
Recorded events
All 22 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 9 Jul 2023 | Flood | — | — | — | — | — | County |
| 9 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 16 May 2014 | Flood | — | — | — | — | — | County |
| 27 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 9 Sep 2011 | Flash Flood | — | — | — | — | — | County |
| 10 Mar 2011 | Flood | — | — | — | — | — | County |
| 14 Mar 2010 | Flood | — | — | — | — | — | County |
| 27 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 28 Mar 2005 | Flood | — | — | — | — | — | Forecast zone |
| 17 Sep 2004 | Flood | — | — | — | — | — | Forecast zone |
| 20 Jun 2001 | Flash Flood | — | $10K | — | — | — | County |
| 20 Aug 1999 | Flash Flood | — | $500K | — | — | — | County |
| 23 Jan 1999 | Flash Flood | — | $5K | — | — | — | County |
| 19 Apr 1998 | Flash Flood | — | — | — | — | — | County |
| 8 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 1997 | Flash Flood | — | — | — | — | — | County |
| 13 Dec 1996 | Flash Flood | — | — | — | — | — | County |
| 13 Sep 1996 | Flash Flood | — | — | — | — | — | County |
| 6 Sep 1996 | Flash Flood | — | — | — | — | — | County |
| 19 Jan 1996 | Flash Flood | — | — | — | 4 | — | County |
| 19 Jan 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Juniata County had?
22 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Juniata County?
9 Jul 2023 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Juniata County?
The flash flood of 20 Aug 1999, with property damage estimated by NCEI at $500K.
How does Juniata County compare with Pennsylvania for flood?
5.6 events per 100 square miles against 15.8 statewide; the county holds 22 of the state's 7,057 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.