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Clackamas County, Oregon
Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.
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. NCEI storm records through 30 Jun 2026; OpenFEMA declarations refreshed 1 Oct 2026; NFIP claims as of 8 Sep 2026.
Between 1950 and 2026, NCEI recorded 109 storm events in Clackamas County, Oregon, led by floods and flash floods.
That is 5.8 events per 100 square miles, below the Oregon figure of 11.7, and 2.6 per 10,000 residents against 26.5 statewide.
2 events fall in the 12 months to 30 Jun 2026. NCEI attributes 6 deaths and 7 injuries to events in the county, with property damage estimated at $24M.
FEMA has designated the county in 23 federal disaster declarations since 1953; the most recent is Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (major disaster, 7 Apr 2026).
National Flood Insurance Program policyholders in the county filed 816 claims since 1978, of which 659 were paid, totalling $25M (about $37K per paid claim). FEMA counts 1,263 residential flood policies in force.
FEMA's National Risk Index rates the county's overall risk as "Relatively High" and its expected annual loss as "Relatively High" ($219M a year across 18 hazards).
Compared with Oregon and the United States
| Measure | Clackamas County | Oregon | US |
|---|---|---|---|
| Recorded events since 1950 | 109 | 11,234 | 1,977,440 |
| Events per 100 square miles | 5.8 | 11.7 | 56.0 |
| Events per 10,000 residents | 2.6 | 26.5 | 59.6 |
| Events in the last 12 months | 2 | 94 | 62,008 |
| Deaths recorded by NCEI | 6 | 360 | 26,435 |
| Property damage (NCEI estimates) | $24M | $5.0B | $575B |
| NFIP claims per 1,000 residents | 1.9 | 1.4 | 8.1 |
| Average paid NFIP claim | $37K | $24K | $43K |
| Claims per 100 policies in force, last 10 years | 5.9 | 3.1 | 16.1 |
County-recorded events plus zone-recorded events whose forecast zone is named for the county. State and US rows include events recorded only by forecast zone. Rates use 2021 Census population and land area.
Events by decade
Trend: 78 events in the 20 years to 2025 against 27 in the 20 years before. Reporting practice changed in 1996 and again with automated reports in the 2000s, so decade totals measure the record as much as the weather.
Events by type
Hazard pages exist for hail, tornado, flood, wind and winter where the county has at least 10 recorded events. "Other" covers heavy rain, debris flow, dust, funnel clouds and similar reports.
Largest recorded events
| Date | Event type | Group | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|---|
| 14 Apr 2022 | Hail | Hail | 0.25 in | $50K | — | 1 | 1 | County |
| 12 Aug 2014 | Flash Flood | Flood | — | — | — | 1 | 1 | County |
| 2 Jan 2009 | Flood | Flood | — | $250K | — | 1 | — | County |
| 15 Jan 1996 | Thunderstorm Wind | Wind | — | — | — | 1 | — | County |
| 2 May 2009 | Thunderstorm Wind | Wind | 63 mph | — | — | 1 | — | County |
| 18 Jan 2019 | Heavy Rain | Other | — | — | — | 1 | — | County |
| 29 Jun 2008 | Lightning | Lightning | — | — | — | — | 2 | County |
| 10 Apr 2003 | Lightning | Lightning | — | — | — | — | 1 | County |
| 5 Oct 2011 | Lightning | Lightning | — | — | — | — | 1 | County |
| 27 Jun 2026 | Lightning | Lightning | — | — | — | — | 1 | County |
| 16 Jan 2011 | Flood | Flood | — | $9.0M | — | — | — | County |
| 16 Jan 2011 | Flood | Flood | — | $9.0M | — | — | — | County |
| 7 Nov 2006 | Flood | Flood | — | $3.0M | — | — | — | County |
| 19 Jan 2012 | Flood | Flood | — | $1.0M | — | — | — | County |
| 19 Jan 2012 | Flood | Flood | — | $1.0M | — | — | — | County |
| 7 Dec 2015 | Flood | Flood | — | $381K | — | — | — | County |
| 18 Dec 2015 | Flood | Flood | — | $128K | — | — | — | County |
Ranked by deaths, then injuries, then NCEI's damage estimate. Deaths and injuries are NCEI counts (direct plus indirect); no personal details are recorded here.
Federal disaster declarations
| Declared | Number | Type | Incident | Title | Programs |
|---|---|---|---|---|---|
| 7 Apr 2026 | DR-4907 | Major disaster | Severe Storm | Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides | Public assistance |
| 13 Apr 2024 | DR-4768 | Major disaster | Severe Storm | Severe Winter Storms, Straight-Line Winds, Landslides, And Mudslides | Public assistance |
| 10 Sep 2022 | FM-5454 | Fire management assistance | Fire | Milo Mciver Fire | Public assistance |
| 4 May 2021 | DR-4599 | Major disaster | Severe Storm | Severe Winter Storm | Public assistance |
| 15 Sep 2020 | DR-4562 | Major disaster | Fire | Wildfires And Straight-Line Winds | Individual assistance, Public assistance |
| 10 Sep 2020 | FM-5370 | Fire management assistance | Fire | Clakamas County Fire Complex | Public assistance |
| 10 Sep 2020 | EM-3542 | Emergency | Fire | Wildfires | Public assistance |
| 9 Sep 2020 | FM-5366 | Fire management assistance | Fire | Riverside Fire | Public assistance |
| 8 Sep 2020 | FM-5356 | Fire management assistance | Fire | Beachie Creek Lionshead Fire Complex | Public assistance |
| 28 Mar 2020 | DR-4499 | Major disaster | Biological | Covid-19 Pandemic | Individual assistance, Public assistance |
| 13 Mar 2020 | EM-3429 | Emergency | Biological | Covid-19 | Public assistance |
| 17 Feb 2016 | DR-4258 | Major disaster | Severe Storm | Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides | Public assistance |
| 16 Sep 2014 | FM-5080 | Fire management assistance | Fire | 36 Pit Fire | Public assistance |
| 17 Feb 2011 | DR-1956 | Major disaster | Severe Storm | Severe Winter Storm, Flooding, Mudslides, Landslides, And Debris Flows | Public assistance |
| 2 Mar 2009 | DR-1824 | Major disaster | Severe Storm | Severe Winter Storm, Record And Near Record Snow | Public assistance |
| 20 Mar 2006 | DR-1632 | Major disaster | Severe Storm | Severe Storms, Flooding, Landslides, And Mudslides | Public assistance |
| 7 Sep 2005 | EM-3228 | Emergency | Coastal Storm | Hurricane Katrina Evacuation | Public assistance |
| 19 Feb 2004 | DR-1510 | Major disaster | Severe Storm | Severe Winter Storms | Public assistance |
| 9 Feb 1996 | DR-1099 | Major disaster | Flood | High Winds, Severe Storms And Flooding | Individual assistance, Public assistance |
| 26 Apr 1993 | DR-985 | Major disaster | Earthquake | Earthquake | Public assistance |
| 25 Jan 1974 | DR-413 | Major disaster | Flood | Severe Storms, Snowmelt & Flooding | Individual assistance, Public assistance |
| 21 Jan 1972 | DR-319 | Major disaster | Flood | Severe Storms & Flooding | Individual assistance, Public assistance |
| 24 Dec 1964 | DR-184 | Major disaster | Flood | Heavy Rains & Flooding | Individual assistance, Public assistance |
Declarations in which FEMA designated this county, from the OpenFEMA Disaster Declarations Summaries (v2). DR: major disaster; EM: emergency; FM: fire management assistance. Programs show whether individual or public assistance was made available.
Flood insurance claims
| Year of loss | Claims | Paid claims | Amount paid | Average paid |
|---|---|---|---|---|
| 2026 | 3 | 2 | $6,539 | $3,269 |
| 2025 | 54 | 48 | $2,948,112 | $61,419 |
| 2022 | 4 | 3 | $261,834 | $87,278 |
| 2021 | 9 | 9 | $60,165 | $6,685 |
| 2020 | 1 | 1 | $2,352 | $2,352 |
| 2017 | 4 | 3 | $53,289 | $17,763 |
| 2016 | 3 | 1 | $10,722 | $10,722 |
| 2015 | 44 | 39 | $1,605,689 | $41,172 |
| 2014 | 1 | 0 | $0 | — |
| 2012 | 10 | 6 | $116,446 | $19,408 |
| 2011 | 19 | 12 | $821,307 | $68,442 |
| 2010 | 1 | 0 | $0 | — |
| 2009 | 45 | 41 | $1,441,537 | $35,159 |
| 2008 | 5 | 3 | $30,746 | $10,249 |
| 2007 | 3 | 2 | $15,656 | $7,828 |
| 2006 | 15 | 8 | $744,252 | $93,032 |
| 2005 | 4 | 2 | $10,968 | $5,484 |
| 2003 | 6 | 5 | $70,640 | $14,128 |
| 2001 | 2 | 1 | $1,113 | $1,113 |
| 2000 | 2 | 0 | $0 | — |
| 1999 | 9 | 6 | $58,533 | $9,755 |
| 1998 | 8 | 3 | $18,426 | $6,142 |
| 1997 | 41 | 30 | $392,793 | $13,093 |
| 1996 | 437 | 388 | $15,500,350 | $39,949 |
| 1995 | 23 | 11 | $177,562 | $16,142 |
OpenFEMA NFIP claims (v3, as of 8 Sep 2026), aggregated by year of loss; amounts are building, contents and increased-cost-of-compliance payments as recorded. Repetitive-loss counts from the NFIP Multiple Loss Properties file (2 Aug 2026); policies in force from the NFIP Residential Penetration Rates file (3 Aug 2026).
National Risk Index
| Hazard (NRI) | Risk rating | Expected annual loss |
|---|---|---|
| Earthquake | $108,503,784 | |
| Inland flooding | $76,621,954 | |
| Cold wave | $14,975,866 | |
| Heat wave | $8,480,397 | |
| Strong wind | $3,293,665 | |
| Avalanche | $1,507,022 | |
| Ice storm | $1,309,861 | |
| Lightning | $1,090,775 | |
| Wildfire | $1,084,028 | |
| Tornado | $1,005,895 | |
| Volcanic activity | $494,889 | |
| Winter weather | $367,577 | |
| Landslide | $209,871 | |
| Hail | $165,182 | |
| Drought | $378 | |
| Coastal flooding | $200 |
FEMA National Risk Index, December 2025 release. Ratings are FEMA's relative comparison of counties; expected annual loss is FEMA's modelled estimate of average yearly building, population and agriculture loss. See how to read the NRI.
Hurricane and tropical storm passes
No HURDAT2 track at tropical-storm strength passes within 100 miles of the county's centre point (through the 2025 season).
ZIP codes with flood claims
- 97222 118
- 97068 98
- 97045 90
- 97034 72
- 97267 72
- 97035 49
- 97022 40
- 97013 38
- 97042 38
- 97038 25
- 97049 25
- 97067 24
- 97011 23
- 97089 22
- 97002 19
- 97015 13
- 97027 13
- 97055 12
- 97206 9
- 97070 8
- 97009 6
ZIP codes whose NFIP claims carry this county's code, with the number of claims. Five or more claims are needed for a ZIP page to be indexed.
Questions and answers
How often does it hail in Clackamas County, OR?
NCEI records 14 hail events in Clackamas County since 1950, in 12 different years; that is about 0.2 recorded events a year. 1 reports were golf-ball size (1.75 in) or larger.
Has Clackamas County had a tornado?
Yes. NCEI records 8 tornadoes in Clackamas County since 1950, 0 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.
When was the last federal disaster declaration for Clackamas County?
7 Apr 2026: Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides, a major disaster declaration for severe storm. The county appears in 23 declarations since 1953.
How many flood insurance claims have been filed in Clackamas County, and how much was paid?
816 NFIP claims since 1978, 659 of them paid, for $25M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.
Is Clackamas County in the National Risk Index's high-risk band?
FEMA's National Risk Index (December 2025) rates the county "Relatively High" for overall risk, "Relatively High" for expected annual loss, "Very Low" for social vulnerability and "Relatively High" for community resilience. These ratings are FEMA's relative comparison across all US counties.
How does Clackamas County compare with the rest of Oregon?
5.8 recorded events per 100 square miles against 11.7 statewide, and 1.9 NFIP claims per 1,000 residents against 1.4. The comparison table on this page shows each measure beside the state and national figures.
Provenance
Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026 (public domain). Declarations: OpenFEMA DisasterDeclarationsSummaries v2, refreshed 1 Oct 2026. Flood claims: OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipMultipleLossProperties v1 (2 Aug 2026); NfipResidentialPenetrationRates v1 (3 Aug 2026). Risk index: FEMA National Risk Index, December 2025. Hurricane tracks: NHC HURDAT2 through 2025. Population and area: US Census Bureau, 2021 vintage. Built 1 Oct 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.