Moderate Activity 🌒 2% Updated live

Aurora Forecast for
Great Slave Lake Tonight

Current northern lights conditions for Great Slave Lake, Northwest Territories, Canada. Latitude 61.9°N · AACGM-v2 magnetic latitude 67.9°N.

Quick Summary: The estimated northern lights outlook for Great Slave Lake peaks at 1% over the next 24 hours. Viewing window: 21:00–07:00 (America/Yellowknife).

Aurora forecast

1%

Estimated

Highest estimate · next 24 hours

Viewing window

21:00

– 07:00

America/Yellowknife

Kp index

3.33

Moderate

Planetary geomagnetic activity

Cloud cover

93%

Overcast

Current sky visibility

Aurora

Tonight's Verdict

Low aurora probability in Great Slave Lake tonight. Check back tomorrow for updated conditions.

Hourly Forecast · Estimated

21:00–07:00 · America/Yellowknife
21
21:00 — 0%
22:00 — 0%
23:00 — 0%
00:00 — 0%
01:00 — 0%
02:00 — 0%
03
03:00 — 1%
04:00 — 1%
05:00 — 1%
06:00 — 1%
07:00 — 1%
08:00 — 1%
09
09:00 — 1%
10:00 — 1%
11:00 — 1%
12:00 — 1%
13:00 — 0%
14:00 — 0%
15
15:00 — 0%
16:00 — 0%
17:00 — 0%
18:00 — 0%
19:00 — 0%
20:00 — 0%
21:00 UTC03:00 UTC09:00 UTC15:00 UTC20:00 UTC
Time (UTC)Estimated (%)
2026-10-12T21:00:00.000Z0%
2026-10-12T22:00:00.000Z0%
2026-10-12T23:00:00.000Z0%
2026-10-13T00:00:00.000Z0%
2026-10-13T01:00:00.000Z0%
2026-10-13T02:00:00.000Z0%
2026-10-13T03:00:00.000Z1%
2026-10-13T04:00:00.000Z1%
2026-10-13T05:00:00.000Z1%
2026-10-13T06:00:00.000Z1%
2026-10-13T07:00:00.000Z1%
2026-10-13T08:00:00.000Z1%
2026-10-13T09:00:00.000Z1%
2026-10-13T10:00:00.000Z1%
2026-10-13T11:00:00.000Z1%
2026-10-13T12:00:00.000Z1%
2026-10-13T13:00:00.000Z0%
2026-10-13T14:00:00.000Z0%
2026-10-13T15:00:00.000Z0%
2026-10-13T16:00:00.000Z0%
2026-10-13T17:00:00.000Z0%
2026-10-13T18:00:00.000Z0%
2026-10-13T19:00:00.000Z0%
2026-10-13T20:00:00.000Z0%
How to read this forecast

The next 24 hours use calculated local darkness and a retained aurora activity heuristic. They are not a measured or statistically calibrated chance of seeing aurora. Aggregate cloud cover is held constant unless a timed weather forecast is available.

Generated 2026-10-12T20:13:38.018Z. Kp: fresh · observation 2026-10-12T18:00:00.000Z. Cloud: fresh · cache refresh 2026-10-12T19:35:47.184+00:00. Overall model: estimated.

Window: 21:00–07:00 (America/Yellowknife). A dash marks a missing input; zero means the model found no visibility under the supplied conditions.

27-Day Forecast

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Oct 13

Kp Index •••
Probability •••
Cloud Cover •••

Oct 14

Kp Index •••
Probability •••
Cloud Cover •••

Oct 15

Kp Index •••
Probability •••
Cloud Cover •••

About Aurora Viewing in Great Slave Lake

Great Slave Lake, Canada, is at 61.9°N. Aurora visibility depends on local conditions as well as geomagnetic activity. Its verified magnetic latitude is 67.9°N; Kp 0–2 is an approximate screening range, not a visibility probability. Even favourable activity can be hidden by clouds or daylight. Find a dark, open northern horizon and check the sky before travelling.

Follow forecasts, cloud maps and aurora alerts for Great Slave Lake in Aurora Hunt, then confirm darkness, local cloud and access before going outside.

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Frequently Asked Questions

Can you see aurora in Great Slave Lake tonight?
Aurora visibility in Great Slave Lake depends on geomagnetic activity (Kp index), cloud cover, and darkness. At 61.9°N latitude, Great Slave Lake typically needs a Kp index of 0–2 for visible aurora. Check the real-time forecast above for tonight's conditions.
What time is best to see northern lights in Great Slave Lake?
The best time to see aurora in Great Slave Lake is typically between 10 PM and 2 AM local time, when skies are darkest. Aurora can appear any time after astronomical twilight, but peak activity usually occurs around local midnight.
Where to watch aurora in Great Slave Lake?
For the best aurora viewing in Great Slave Lake, find a location away from city light pollution with a clear view to the north. Dark areas outside the city center, elevated viewpoints, and spots near water are ideal. Check cloud cover before heading out.
What Kp index is needed to see aurora in Great Slave Lake?
Great Slave Lake is at 61.9°N latitude and typically requires a Kp index of 0–2 for visible aurora. Higher Kp values mean stronger geomagnetic storms and better aurora visibility, even at lower latitudes.
Is Great Slave Lake, Canada a good place to see northern lights?
Great Slave Lake is a great location for aurora viewing. Located at 61.9°N, it sits within the auroral zone where northern lights are frequently visible during active periods.

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Never Miss the Aurora in Great Slave Lake

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