0/100
Aurora score
Low·0/100
Strong aurora activity and clear skies. Good conditions for observing the Northern Lights.
Aurora chance0%
Kp index0High activity
Cloud cover0%Mostly clear
Best time—Local time☾Darkness—Local time
LOCAL AURORA FORECAST
Northern Lights forecast for Seattle, WA
Live Northern Lights forecast for Seattle, WA, United States at 47.6°N: current OVATION chance, local Viewing Score, cloud cover, best time and a 3-day outlook.
Kp index0High activityCloud cover0%Mostly clearBest time—Local timeNEXT 24 HOURS
Hourly forecast (tonight)
Viewing scoreCloud cover
18:00
18%
☁28%
-2°
19:00
24%
☁25%
-2°
20:00
34%
☁23%
-3°
21:00
48%
☁21%
-3°
22:00
63%
☁18%
-4°
23:00
74%
☁16%
-4°
00:00
82%
☁14%
-5°
Best
01:00
79%
☁13%
-5°
02:00
70%
☁15%
-5°
03:00
59%
☁17%
-5°
04:00
48%
☁19%
-4°
05:00
38%
☁22%
-4°
06:00
30%
☁25%
-3°
07:00
23%
☁28%
-3°
08:00
17%
☁31%
-2°
09:00
13%
☁35%
-2°
10:00
10%
☁38%
-1°
11:00
8%
☁40%
-1°
12:00
7%
☁43%
0°
13:00
7%
☁45%
0°
14:00
8%
☁42%
-1°
15:00
10%
☁38%
-1°
16:00
13%
☁34%
-2°
17:00
16%
☁30%
-2°
OUTLOOK
3-day forecast
Tonight21 Nov
☁ 18% · −5°
—Fri22 Nov
☁ 42% · −5°
23:30 – 01:00Sat23 Nov
☁ 71% · −3°
00:10 – 01:20LOCAL CONDITIONS
Weather
Cloud cover0%Mostly clear−5°
Temperature−5°CWind —≈
Humidity—Weather data from MET Norway◐
Moon34%IlluminationLOCAL VIEW
Aurora map
Seattle, WA
47.61°, -122.33°
NOAA OVATION
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SPACE WEATHER
Space weather details
Kp index0
Solar wind speed482 km/s
Bz (IMF)−6.1 nT
Bt (IMF)7.3 nT
Proton density6.8 p/cm³
Aurora ovalNorthern Europe
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Detailed space weather dataABOUT THE LOCATION
Aurora in Seattle, WA
Seattle, WA sits at 47.6°N and is a lower-latitude aurora location. Visible events are more dependent on strong geomagnetic disturbances, expansion of the auroral oval and a clear dark sky.
Around Seattle, WA, aurora sightings are more event-dependent than in the far north. Stronger geomagnetic activity and a southward expansion of the auroral oval are especially important.
All times on this page use the local America/Los_Angeles time zone. The forecast combines current auroral activity, predicted Kp, darkness, Moon conditions and local weather to estimate practical viewing conditions near Seattle, WA.
Latitude47.6°N
Time zoneAmerica/Los_Angeles
Aurora settingEvent-dependent aurora zone
FAQ — Seattle, WA
How is Viewing Score calculated for Seattle, WA?
Viewing Score is a local 0–100 estimate rather than an official NOAA probability. The current score starts from the aurora chance for Seattle, WA; future hours adjust auroral activity using the predicted Kp.
Darkness, cloud cover and Moon illumination then modify the result. Cloud cover only affects the score when the “Include clouds in score” switch is enabled. Daylight can reduce the score to zero, while a bright Moon above the horizon applies a smaller penalty.