Live Aurora Outlook
Northern Lights in Washington
Tonight's Live Forecast
Washington needs a Kp index of roughly 5+ for visible aurora. Below is tonight's answer, computed from the live Kp reading — updated hourly, explained calmly.
Can you see the northern lights in Washington tonight?
Close — a small uptick would put it in reach
The Kp index is currently 4, just below Washington's approximate threshold of Kp 5. Geomagnetic activity moves in waves, so a substorm could briefly tip the odds — worth a look north if you are already somewhere dark.
Aurora in Washington
What Washington Needs for a Display
Washington sees aurora more often than most people expect. Because the magnetic pole leans toward North America, the state's geomagnetic latitude is high for its map position, and a G1 storm (Kp 5) can put a glow on the northern horizon from the Bellingham area and the North Cascades. Seattle's light dome is the real obstacle — city viewing usually needs Kp 6–7, while a short drive to dark sky drops the bar.
Northern Washington sits near 53° geomagnetic latitude — higher than its map position suggests. Aurora visibility depends on geomagnetic latitude — which differs from map latitude by up to 15 degrees — so these thresholds come from NOAA SWPC's storm-level view-line estimates, not simple map position. Treat them as odds, not guarantees: at the threshold Kp, expect a glow low on the northern horizon rather than overhead curtains.
Approximate Kp Needed by Location
Based on NOAA SWPC G-scale view-line estimates
Best Viewing Spots in Washington
When to Look
10 PM – 2 AM local time, centered on midnight. September through March offers the darkest skies. Avoid full-moon nights and city light domes — even 30 minutes of driving makes a real difference.
Don't Refresh This Page All Winter —
get a Kp alert instead
Aurora visibility in Washington is driven by the Kp index, so a Kp storm alert is effectively an aurora heads-up. The ResonanceOne app sends free push notifications when the Kp index reaches geomagnetic storm level (Kp 5+) — right at Washington's visibility threshold.
To be clear: ResonanceOne is not a dedicated aurora app — no aurora map, no location-based visibility forecast. It tracks the underlying signals (Kp index, solar flares, Schumann Resonance) in one calm Activity Index, and alerts you when they spike.
Common Questions
Northern Lights in Washington: FAQ
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