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Northern lights Oregon tonight

Oregon sits at ~54°N magnetic latitude and needs Kp 5-6. The Alvord Desert in southeast Oregon gives Bortle 1-2 sky - among the darkest in the USA. Crater Lake is a designated Dark Sky Park at 1880 m. The Cascade rain shadow keeps eastern Oregon clear while the coast stays cloudy. Best season: September to April, eastern Oregon preferred.

Aurora visibility — Oregon

Unlikely tonight

Kp 1 is well below the Kp 5–6 threshold needed for aurora to be visible from Oregon.

Current Kp

1

of 9

Threshold for Oregon: Kp 5–6 Magnetic latitude: ~54°N Updated: 11 May, 23:31 UTC

What Kp is needed here?

Oregon sits at a magnetic latitude of approximately 54°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 5–6 before the auroral oval expands far enough south to be visible from here.

At Kp 5–6, visibility is possible from Oregon but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Best dark sky sites near Oregon

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Crater Lake National Park

A designated International Dark Sky Park at 1880 m elevation in the southern Cascades. The caldera rim at Crater Lake gives 360-degree sky access with Bortle 2-3 conditions. At 43°N geographic (53°N magnetic), the park is slightly south of optimal for aurora but the extreme elevation and darkness compensate for stronger events. The north rim road gives north-facing positions above the caldera. The park receives 4-5 m of snowfall and road access is seasonal, but the south and west entrances remain open year-round. The nearest large city is Medford, 95 km to the south.

Steens Mountain and Alvord Desert

Steens Mountain rises to 2967 m in the remote southeast Oregon desert, 150 km east of Burns. The Alvord Desert at the foot of the east escarpment gives a flat playa floor facing north with minimal horizon obstruction. Bortle 1-2 at the Alvord Desert - among the darkest accessible sky in the contiguous USA. The absolute lack of light pollution across hundreds of kilometres of Great Basin desert means even modest aurora can be detected on the northern horizon. The Steens Mountain Loop road gives high-elevation positions when open (summer-autumn only).

Wallowa Mountains and northeastern Oregon

The remote northeastern corner of Oregon near Enterprise and Joseph, 60 km south of the Washington border. The Wallowa Mountains give elevated positions at 1800-2000 m with north-facing valleys. The Hells Canyon area near Halfway faces north across the Snake River corridor toward Idaho. Bortle 2-3 in the Wallowa backcountry. The Eagle Cap Wilderness covers 360,000 acres without a settlement of significance. A 5-hour drive from Portland but one of Oregon's highest-latitude major dark sky regions.

Other USA aurora forecasts

USA overview Washington Idaho California

Related pages

Northern Lights USA

USA-wide aurora forecast hub.

Northern Lights Washington Tonight

Washington State - Okanogan Highlands and North Cascades.

Northern Lights Idaho Tonight

Idaho - Craters of the Moon Dark Sky Park, similar latitude.

What Is the Kp Index?

What Kp 5-6 means for viewing at 54°N magnetic latitude.

Northern Lights Viewing Tips

Dark site selection for Pacific Northwest aurora watching.

Common questions

Aurora in Oregon - Alvord Desert, Crater Lake, Portland visibility, and eastern Oregon strategy.

Can you see the northern lights in Oregon?
Yes, during moderate to strong geomagnetic storms. Oregon at ~54°N magnetic latitude needs Kp 5-6 from dark sites. The Alvord Desert in southeast Oregon gives Bortle 1-2 sky with exceptional darkness. Crater Lake is a designated Dark Sky Park at 1880 m. The Cascade rain shadow keeps eastern Oregon significantly clearer than the cloud-prone western coast. The May 2024 G5 storm produced aurora visible from Portland.
What Kp is needed for aurora in Oregon?
Kp 5 from dark sites in northeastern Oregon - the Wallowa Mountains and the northeast corner near Washington. Kp 5-6 from Crater Lake and central Oregon high desert. Kp 6 for aurora visible from Bend or Eugene. Kp 7 for Portland. Oregon's 54°N magnetic latitude is comparable to Washington State - the threshold is similar but eastern Oregon's Great Basin desert gives some of the darkest skies in the USA, comparable to the Atacama in atmospheric clarity.
Where is the best place to see aurora in Oregon?
The Alvord Desert in Harney County gives Oregon's darkest sky - Bortle 1-2 on the playa floor with 360-degree unobstructed horizon. The distance from any urban centre (Burns is 150 km northwest) means the night sky is genuinely pristine. For accessibility, Crater Lake National Park is a designated Dark Sky Park with road access and infrastructure. For northern latitude combined with darkness, the Wallowa Mountains in northeast Oregon are the better aurora position.
Can you see aurora from Portland, Oregon?
During strong geomagnetic storms. Portland sits at ~52°N magnetic latitude and needs Kp 7 through the city's light pollution. The May 2024 G5 storm produced aurora photographs from Portland. For regular aurora events (Kp 5-6), driving east across the Cascades to eastern Oregon dramatically improves both sky darkness and clear-sky frequency. The Columbia River Gorge gives a north-facing open horizon 45 minutes from Portland.
When is aurora season in Oregon?
September to April, with a strong preference for eastern Oregon. The Cascade rain shadow keeps central and eastern Oregon significantly drier than the Portland region - Bend averages 300 days of sunshine per year. September and October give clear, stable nights after summer fire season. Eastern Oregon winter (November-February) is cold but frequently clear under Great Basin high-pressure systems. The Alvord Desert is accessible year-round on dirt roads that require 4WD in winter.