Auroras (northern lights) in Thunder bay — Dec 18, 2025
Probability of northern lights in Thunder bay
Information as of 2025-12-18 23:46 (end of day) local time in Thunder bay
4 %
Thunder bay
Aurora intensity index
Auroral intensity index and the theoretically possible latitude of observations for nighttime in the Western Hemisphere as of 2025-12-18 23:46 (end of day) local time
Northern lights (auroras) over North America
Changes from 2025-12-18 to 2025-12-19 UTC
Northern lights (auroras) in the northern hemisphere
Changes from 2025-12-18 to 2025-12-19 UTC
Probability of northern lights (auroras) in cities of Canada
Information as of 2025-12-18 23:46 (end of day) local time in Thunder bay
0 %
Ottawa
0 %
Toronto
1 %
Montreal
0 %
Vancouver
2 %
Calgary
8 %
Edmonton
0 %
Hamilton (Canada)
1 %
Quebec
6 %
Winnipeg
0 %
Kitchener
6 %
Saskatoon
4 %
Red deer
27 %
Salluit
32 %
Arviat
25 %
Yellowknife
9 %
Whitehorse
27 %
Thompson
3 %
Prince george
26 %
Rankin Inlet
20 %
Iqaluit
16 %
Inuvik
5 %
Cambridge Bay
Polar auroras over the past 2 days
Changes in the auroral intensity index from 2025-12-17 to 2025-12-18 local time
