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Northern Lights Over Washington: When Auroras Reach the PNW

Why solar cycle peak years push auroras down to Washington latitudes, which Kp levels to watch, the best dark-sky spots to try, and camera settings that actually work.

Updated December 16, 2025
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The northern lights are a rare treat in Washington — but they are not a lottery. They follow a cycle, and the cycle is in your favor right now. Here is how to be standing somewhere dark when the sky lights up.

At a glance

The sun is near the top of Solar Cycle 25, and its peak years run through about 2026. During this stretch, strong geomagnetic storms push auroras far south of their usual range, and Washington gets real shows. Watch the Kp index, wait for a clear, moonless night with a north view, and point a camera north.

Best for: night photographers and stargazers in western and eastern Washington. Key takeaway: aurora chasing is mostly weather and timing — pick dark north-facing ground, then let the forecast tell you when.

Why now is different

The sun runs on an eleven-year cycle of high and low activity. Solar Cycle 25 peaked around 2024 and 2025, and NOAA space weather forecasters expect strong activity to continue through 2026. More sunspot activity means more coronal mass ejections. When those hit Earth's magnetic field, they light up the sky much farther south than normal. In quiet years, auroras stay near Canada. On Kp-5 nights and stronger, they reach Washington skies — sometimes directly overhead during the biggest storms.

What the Kp index means

Kp is a simple 0-to-9 scale of geomagnetic storm strength. Higher numbers mean the auroral oval pushes farther from the poles.

  • Kp 0–2: arctic latitudes only. Ignore for Washington.
  • Kp 4: possible on our northern horizon under very dark skies.
  • Kp 5+ (storm level): visible from Washington, often low on the horizon.
  • Kp 7+: rare, big storms that can fill the whole northern sky.

Check the current forecast on NOAA's Space Weather Prediction Center site, and set alerts with an aurora app such as My Aurora Forecast so a strong event wakes you instead of surprising you tomorrow morning. Forecasts sharpen only hours ahead, so plan loosely and act fast when the alert lands.

Where to go in Washington

You need three things from a spot: open sky to the north, distance from city glow, and ideally water or open ground below that northern horizon. Some reliable options:

  • Hurricane Ridge (Olympic National Park) — high, open, and far from Seattle's glow. Winter road hours are limited, so confirm access before you go.
  • Art Hill and the beaches at Deception Pass State Park — north-facing water views under Whidbey Island skies.
  • Washington Park in Anacortes — a paved loop with open northern water views.
  • Eastern Washington dark skies — the Palouse and Sun Lakes sit far from city light, with wide horizons.
  • Mount Baker area — high clearings along the Highway 542 corridor with a clean north view.

The conditions you actually need

A strong Kp number alone does not make a show. Stack all four:

  1. Clear skies. Marine cloud kills more Washington aurora nights than weak storms do. Check a dedicated astronomy forecast such as Clear Outside, not just the general weather report.
  2. Dark moon. Plan around the new moon window, roughly the week before and after it. A full moon washes out faint reds.
  3. North-facing horizon. Auroras enter low in the north first. Water or open fields below that horizon double the view by adding reflection.
  4. Real darkness. Arrive well after evening twilight ends, usually 90 minutes past sunset.

Camera settings basics

Cameras see faint aurora before eyes do, so trust the screen more than the sky.

  • Use a tripod. Every long exposure needs it.
  • Pick a wide lens at f/2.8 or faster if you have one.
  • Start at ISO 1600–3200 and adjust from there.
  • Try exposures of 5 to 15 seconds. Bright dancing curtains need shorter times or they blur into green soup.
  • Focus manually on infinity before dark, then tape the focus ring. Autofocus hunts forever in blackness.

Phones do better than most people expect. Night mode stacks several seconds of exposure automatically. Steady the phone against something solid, tap to focus, and shoot north.

Patience, and dress warmer than you think

Shows build in waves over an hour or more, so plan to stand around. Standing still in winter cold drains you fast, and cold hands fumble camera settings. Dress a full layer warmer than a normal hike, bring a thermos, and keep spare batteries in an inside pocket. The people who see auroras in Washington are simply the ones still outside when the storm arrives.

Sources Checked

  • NOAA Space Weather Prediction Center — Kp index scale, aurora forecasts, and solar cycle outlook.
  • NASA — Solar Cycle 25 progression and peak timing.
  • National Park Service (Olympic) — Hurricane Ridge winter access; confirm current hours.
  • Washington State Parks — Deception Pass State Park hours and winter rules; confirm before you go.