Aurora Borealis forecast for Alaska
You can click on a column in the graph above to see the detailed forecast below.
Friday, April 19, 2019
Activity level is QUIET
KPI index: 0 1 2 3 4 5 6 7 8 9
Peak Activity: 1:00AM
Auroral activity will be quiet. Weather permitting, quiet displays will be visible directly overhead from Barrow to Fort Yukon and visible low on the horizon from Fairbanks to as far south as Nome, Talkeetna and Whitehorse, Canada.
Hourly Weather Forecast for Valdez
The Aurora Borealis (Northern Lights) forms when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. These collisions result in countless little bursts of light, called photons, which make up the aurora.
The KP Index (KPI) goes from 0 to 9 as the geomagnetic strength increases. KPI 0 being no aurora while KPI 9 being a major geomagnetic storm likely visible all the way to California and even to France.
Space Weather News
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