Natural disaster risk in Armstrong County, Pennsylvania
Pennsylvania · population 65,530 · FIPS 42005
Overall: relatively low risk
Armstrong County has a composite risk score of 69.3 out of 100 — higher than 69% of US counties. It ranks 33 of 67 in Pennsylvania (1 = highest risk). Its highest-rated hazards are inland (riverine) flooding, lightning, landslide.
Drought now: No: no drought or dryness
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Armstrong County is in drought or abnormally dry (none of D0 to D4). That has been so for 32 weeks in a row.
Drought in Armstrong County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Relatively low 69.3 |
| Expected annual loss About $27.8 million a year, on average, across all 18 hazards. |
Relatively low 70.6 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Relatively moderate 42.9 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Very high 86.6 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Armstrong County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Inland (riverine) flooding | Relatively moderate 85 |
| Lightning | Relatively moderate 71 |
| Landslide | Relatively low 85 |
| Hail | Relatively low 36 |
| Tornado | Relatively low 34 |
| Strong wind | Relatively low 30 |
| Ice storm | Relatively low 27 |
| Avalanche | Very low 52 |
| Hurricane | Very low 52 |
| Earthquake | Very low 35 |
| Heat wave | Very low 30 |
| Wildfire | Very low 21 |
| Cold wave | Very low 9 |
| Winter weather | Very low 4 |
| Coastal flooding | Not applicable |
| Drought | No rating |
| Tsunami | Not applicable |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Armstrong County
Federal declarations that designated Armstrong County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Not since 1 Jan 2024: no FEMA disaster declaration in the records this site read names Armstrong County.
All FEMA declarations in Pennsylvania, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in Armstrong County, Pennsylvania?
FEMA's National Risk Index rates the overall risk in Armstrong County as relatively low, with a score of 69.3 out of 100 (higher than 69% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Armstrong County?
The hazards rated highest for Armstrong County are inland (riverine) flooding (relatively moderate), lightning (relatively moderate), landslide (relatively low).
What is the flood risk in Armstrong County?
FEMA rates inland (river and rain) flooding risk in Armstrong County as relatively moderate. For a specific property, check the FEMA flood map and your local floodplain office.
Has Armstrong County had a FEMA disaster declaration?
Not since 1 Jan 2024: no FEMA disaster declaration in the records this site read names Armstrong County.
Is Armstrong County in a drought?
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Armstrong County is in drought or abnormally dry (none of D0 to D4). That has been so for 32 weeks in a row.
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