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Alta

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KP Index

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Magnetic Latitude

66.5°

Minimum KP

KP 2+

Aurora in Alta

Alta offers excellent opportunities to witness the aurora borealis. Located at 66.5 degrees magnetic latitude, this destination requires a minimum KP index of 2 for aurora visibility. The best viewing season runs from 09/01 to 03/31.

Best Viewing Season

The aurora season in Alta runs from September to March. The best months for viewing are typically September, October, November, when darkness hours are longest and geomagnetic activity tends to peak.

Best Viewing Spots Near Alta

City Outskirts

Areas away from city lights offer better viewing conditions.

69.9689, 23.2716 10-20 km from center

Nearby Lakes

Bodies of water provide beautiful aurora reflections.

Various 15-30 km from center

Elevated Areas

Higher ground offers clearer horizons and reduced light pollution.

Various 20-40 km from center

Nearby Destinations

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Abisko

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Kiruna

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Practical Information

The nearest airport is ALF. Alta is accessible by air from major European and North American hubs. Local transportation options include rental cars, buses, and organized tours. For aurora hunting, having your own vehicle provides the flexibility to chase clear skies.
The optimal viewing time is typically between 10 PM and 2 AM local time, though aurora can appear anytime during dark hours. Plan your visit during the new moon phase for the darkest skies. Monitor the KP index and weather forecasts closely - a KP of 2 or higher is needed for aurora visibility at this location.
Winter temperatures can drop to -20C (-4F) or lower, so dress in warm layers. Expect to spend time outdoors waiting for aurora activity. Cloud cover is the biggest challenge - clear skies are essential. The aurora can appear as a faint green glow or as dramatic dancing curtains of color depending on geomagnetic activity.

Frequently Asked Questions about Alta

The aurora season in Alta runs from 09/01 to 03/31. The peak months are typically December through February when nights are longest. September and March also offer excellent viewing during the equinoxes when geomagnetic activity increases.

At Alta's magnetic latitude of 66.5 degrees, you typically need a KP index of 2 or higher to see the Northern Lights. Higher KP values will produce brighter and more active displays. During geomagnetic storms (KP 5+), the aurora can be spectacular.

During peak aurora season (December-January), Alta experiences up to 18-20 hours of darkness or twilight suitable for aurora viewing. Even in September and March, you'll have 10-12 hours of darkness. The best viewing window is typically between 10 PM and 2 AM local time.
Solar Maximum 2025-2026

Real-time alerts for Alta

We're entering the most active period for northern lights in over a decade. Don't miss this rare opportunity.

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