Interactive tool · FEMA + NOAA data
Historical Disaster Activity Index
Compare any U.S. state or county on a disclosed 0–100 historical-activity index. State scores use FEMA declarations and NOAA event and damage history; county scores use FEMA declaration frequency, density, Major Disaster share, and declared-hazard diversity. See our methodology.
Oregon result
Oregon has a very high PlainHazard historical-activity score of 78/100, based on 169 FEMA declarations, 3,695 NOAA storm events, and recorded damage. It summarizes recorded activity; it is not a forecast or a FEMA risk rating.
- 78/100
- very high historical activity
- 169
- FEMA disaster declarations on record
- 10
- declared hazard types in the score
The disclosed state formula and every factor are shown directly below.
Selected location
Oregon
Very High historical activity
Oregon has very high historical activity on PlainHazard's disclosed factors. This is not a forecast or a FEMA risk rating.
View full state profileThis is PlainHazard's own derived historical-activity index, not FEMA's National Risk Index and not directly comparable to the FEMA score shown below. County results use FEMA declaration measures because this database does not contain county-level NOAA damage. For evacuation planning, insurance decisions, or other personal safety decisions, consult local emergency management, the National Weather Service, or FEMA directly.
Factor Breakdown
4 scored dimensionsFEMA Declarations (1953–present)
29/30169 OpenFEMA declarations, full ingest window (1.9x state average)
NOAA Storm Events (2015–2025)
4/253695 NOAA storm events in the 2015–2025 extract (0.3x median state)
NOAA Damage (2015–2025)
25/25Recorded NOAA property+crop damage in the 2015–2025 extract (6.9x median state)
Hazard Diversity
20/2010 different disaster types declared in Oregon
Recorded evidence
The signals behind this score
Each number is a disclosed historical input. It describes the record, not a forecast of future danger.
- FEMA declarations
- 169
- Storm events
- 3,695
- Fatalities
- 294
- Total damage
- $4.0B
- Hazard types
- 10
- Flood insurance claims
- 5,987
Top Disaster Types in Oregon
| Disaster Type | Declarations | Share |
|---|---|---|
| Fire | 124 | 73.4% |
| Severe Storm | 20 | 11.8% |
| Flood | 16 | 9.5% |
| Biological | 2 | 1.2% |
| Earthquake | 2 | 1.2% |
| Drought | 1 | 0.6% |
| Fishing Losses | 1 | 0.6% |
| Coastal Storm | 1 | 0.6% |
| Tsunami | 1 | 0.6% |
| Mud/Landslide | 1 | 0.6% |
Top Storm Event Types in Oregon
| Storm Type | Events | Share | Fatalities | Property Damage |
|---|---|---|---|---|
| High Wind | 859 | 23.2% | 13 | $3.2B |
| Heavy Snow | 654 | 17.7% | 2 | $139.2M |
| Frost/Freeze | 391 | 10.6% | 0 | $0 |
| Wildfire | 311 | 8.4% | 15 | $15.1M |
| Flood | 244 | 6.6% | 3 | $68.4M |
| Winter Storm | 203 | 5.5% | 9 | $20.4M |
| Hail | 161 | 4.4% | 1 | $50.0K |
| Excessive Heat | 156 | 4.2% | 162 | $50.0K |
Frequently Asked Questions
How is the historical-activity score calculated?
The state score combines FEMA declaration frequency (30 points), NOAA storm-event frequency (25), NOAA property and crop damage (25), and declared-hazard diversity (20). County rows do not contain county-level NOAA damage in this database, so the county score instead uses FEMA declaration frequency (30), declaration density versus the state county average (25), Major Disaster share (25), and declared-hazard diversity (20). PlainHazard labels both as derived historical indexes, not FEMA National Risk Index scores.
What data sources are used?
The calculator uses FEMA OpenFEMA declaration records (1953–2026) for state and county scores. State scores also use NOAA Storm Events records (2015–2025); county scores do not because this database has no county-level NOAA damage. FEMA and NOAA publish the source records; the weighted score is PlainHazard-derived.
What does the historical-activity band mean?
Low (0-24), Moderate (25-49), High (50-74), and Very High (75-100) compare the recorded factors used by this tool. They describe relative historical activity, not future hazard probability, a FEMA risk rating, or a safety forecast.
Can I compare historical activity for a specific county?
Yes. Select a state first, then optionally select a county to see its historical declaration record and FEMA National Risk Index context. PlainHazard scores use FEMA declarations for that county compared with national and state averages.
How often is the data updated?
The underlying database includes FEMA declarations through 2026 and NOAA storm events through 2025. PlainHazard scores reflect the historical record available from each source and do not predict future events.
How to use this
This score is a historical-data summary, not a prediction, use it as a starting point for further research, not a final verdict on any one place.
- Score your state first to set a national baseline, then narrow to a specific county for localized detail. Browse states
- A low county score does not guarantee low risk, rare but severe hazards (a single major hurricane or earthquake) can score low on this 2015-2025 window while still posing real long-run exposure.
- FEMA's National Risk Index, official local hazard maps, and current emergency guidance are separate sources; this retrospective index contains none of their real-time or predictive signals. Read the methodology
This historical-activity score is PlainHazard's own derived index, weighted and combined from federal source data. It is not FEMA's National Risk Index or an official government rating.
Data sources: FEMA OpenFEMA Disaster Declarations (1953–2026), NOAA Storm Events Database, NFIP Flood Insurance Claims. Historical-activity scores are computed by PlainHazard and do not predict future events. This tool is for informational purposes only.
PlainHazard calculates this historical-activity score from federal source data covering 3,266 U.S. counties and county equivalents in this database, refreshed as of 2026-08-25. FEMA does not publish or endorse this score. Read our methodology for how the score is computed.
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.