7-Day Geomagnetic Forecast - Northern Lights Alaska

What is the 7-Day Forecast?

The 7-Day Geomagnetic Forecast provides medium-term predictions of geomagnetic activity (measured by the Kp Index) for the next week. This forecast combines the accuracy of the 3-day forecast with the extended outlook of the 27-day forecast, offering a balanced planning window for aurora viewing.

Why 7 Days?

The 7-day forecast provides an optimal balance between accuracy and planning time. It's derived from the 27-day outlook and gives you enough time to plan trips while maintaining reasonable accuracy. This timeframe is perfect for planning weekend trips or week-long aurora viewing adventures.

Key Features

Extended Planning: Perfect for planning trips 3-7 days in advance
Daily Predictions: Provides daily Kp Index forecasts for the week
Good Accuracy: More accurate than 27-day forecast, with longer planning window than 3-day
Weekly Overview: See the full week's forecast at a glance

How to Use This Forecast

1.

Medium-Term Planning: Use this forecast for trips happening in the next 3-7 days. Look for periods with predicted Kp values of 5 or higher.

2.

Refine with 3-Day: As your viewing date approaches, check the 3-day forecast for more accurate predictions and any updates.

3.

Compare with 27-Day: Use the 27-day outlook for context on longer-term trends, but rely on the 7-day forecast for your specific planning window.

💡 Best Practice

For the best results, use the 7-day forecast to identify promising viewing windows, then check the 3-day forecast as your date approaches to confirm and refine your plans.

7-Day Forecast Chart

Loading 7-day forecast data...

No forecast data available

Data Points: days

Date Range: -

Kp Index Scale

0-2

Quiet

3-4

Unsettled

5

Minor Storm

6

Moderate

7-9

Strong

For Aurora Viewing: Kp values of 5 or higher typically indicate good aurora viewing opportunities in Alaska. Higher values (6-9) suggest stronger, more widespread aurora activity.