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Rule Fog Hunter

Invermere - Fog Hunter - Canadian Rockies

Invermere, British Columbia, Canada

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 75.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread8.3°C
Visibility24134 (Clear)
Relative Humidity57%
Wind Speed2.2m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Edmonton

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the temperature inversions and fog conditions that create some of the most dramatic mountain photography in North America. We combine atmospheric data with local topography to predict when Bow Valley inversions will trap fog below while peaks glow above.

The Canadian Rockies are famous for their autumn morning fog, particularly in the Bow Valley corridor between Banff and Lake Louise. Cold mountain air settles into valleys overnight, creating thick fog layers that can persist until mid-morning, especially in September and October.

What makes Rockies fog photography exceptional:

  • Bow Valley inversions - Temperature inversions create sea-of-fog conditions with peaks emerging above the cloud layer
  • Glacier lake mist - Moraine Lake and Lake Louise develop ethereal mist at dawn when water temperatures meet cold air
  • Castle Junction phenomena - Junction areas where valleys meet create reliable fog formation zones
  • Autumn intensity - September through October brings the most dramatic and frequent fog events

Best shooting occurs at elevated viewpoints like Tunnel Mountain or Sulphur Mountain during inversions, or directly at lake level during misty conditions. Our forecast identifies when these different fog types will occur.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Edmonton
Fog Probability
≥ 75.0%
Tue, Jul 7
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Jul 8
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Jul 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Fri, Jul 10
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sat, Jul 11
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
America/Edmonton
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Wed, Jul 8 Sunrise 05:42 Sunset 21:55
07:00
74% 3.5°C 0mm 57% 0cm 9.8° 12°C 0mm 0.59kPa 24134m 5.3m/s 2.2m/s
08:00
77% 3.3°C 0mm 46% 0cm 19° 15°C 0mm 0.9kPa 24135m 5.6m/s 3.1m/s
09:00
81% 3.2°C 0mm 39% 0cm 28° 17°C 0mm 1.2kPa 24135m 5.1m/s 3.2m/s
10:00
85% 4°C 0mm 35% 0cm 38° 20°C 0mm 1.5kPa 24135m 3.7m/s 2.5m/s
11:00
88% 4.5°C 0mm 32% 0cm 47° 22°C 0mm 1.8kPa 24135m 2.8m/s 1.6m/s
12:00
92% 4.5°C 0mm 28% 0cm 55° 24°C 0mm 2.2kPa 24134m 3.2m/s 1m/s
13:00
72% 3.8°C 0mm 24% 0cm 60° 26°C 0mm 2.5kPa 24134m 4.7m/s 1.8m/s
14:00
52% 1.6°C 0mm 20% 0cm 62° 26°C 0mm 2.7kPa 24134m 6.3m/s 2.8m/s
15:00
32% 0.1°C 0mm 19% 0cm 59° 26°C 0mm 2.7kPa 24135m 6.7m/s 3.6m/s
16:00
23% -0.7°C 0mm 18% 0cm 52° 25°C 0mm 2.6kPa 24134m 5.9m/s 3.3m/s
17:00
14% -0.6°C 0mm 19% 0cm 44° 24°C 0mm 2.5kPa 24134m 4.7m/s 2.9m/s
18:00 ☾
5% -1°C 0mm 19% 0cm 34° 24°C 0mm 2.4kPa 24135m 4.5m/s 2m/s
19:00 ☾
23% -1°C 0mm 20% 0cm 25° 24°C 0mm 2.3kPa 24135m 4.3m/s 1.9m/s
20:00 ☾
42% 2.3°C 0mm 27% 0cm 16° 22°C 0mm 2kPa 24135m 2.7m/s 1.7m/s
21:00 ☾
60% 3.4°C 0mm 36% 0cm 6.7° 19°C 0mm 1.4kPa 24134m 1.6m/s 1.9m/s
22:00 ☾
48% 1.9°C 0mm 42% 0cm -1.1° 15°C 0mm 0.99kPa 24134m 1.6m/s 1.9m/s
23:00 ☾
37% 1.5°C 0mm 45% 0cm -8.1° 13°C 0mm 0.84kPa 24134m 1.4m/s 1.6m/s
Thu, Jul 9 Sunrise 05:43 Sunset 21:54
24:00 ☾
25% 1.2°C 0mm 48% 0cm -13° 12°C 0mm 0.74kPa 24135m 1.2m/s 1.3m/s
01:00 ☾
18% 1°C 0mm 49% 0cm -16° 11°C 0mm 0.68kPa 24135m 0.61m/s 0.38m/s
02:00 ☾
10% 1°C 0mm 49% 0cm -17° 11°C 0mm 0.68kPa 24134m 0.72m/s 0.51m/s
03:00 ☾
3% 1.1°C 0mm 50% 0cm -15° 11°C 0mm 0.67kPa 24135m 1m/s 0.87m/s
04:00 ☾
2% 1.1°C 0mm 50% 0cm -12° 11°C 0mm 0.67kPa 24134m 1.4m/s 1.2m/s
05:00 ☾
1% 1.2°C 0mm 51% 0cm -5.9° 11°C 0mm 0.65kPa 24135m 1.1m/s 1m/s
06:00
0% 1.3°C 0mm 52% 0cm 1.6° 11°C 0mm 0.61kPa 24135m 1.2m/s 1.2m/s
07:00
3% 2.5°C 0mm 53% 0cm 9.7° 12°C 0mm 0.65kPa 24134m 1.4m/s 0.93m/s
08:00
7% 2.5°C 0mm 47% 0cm 19° 14°C 0mm 0.83kPa 24135m 1.6m/s 1m/s
09:00
10% 2.8°C 0mm 42% 0cm 28° 16°C 0mm 1.1kPa 24135m 1.8m/s 1.5m/s
10:00
11% 2.9°C 0mm 36% 0cm 38° 18°C 0mm 1.3kPa 24134m 2m/s 1.7m/s
11:00
13% 3°C 0mm 32% 0cm 47° 20°C 0mm 1.6kPa 24135m 2.5m/s 1.8m/s
12:00
14% 3.3°C 0mm 29% 0cm 55° 22°C 0mm 1.9kPa 24135m 3.1m/s 1.5m/s
13:00
18% 3.1°C 0mm 25% 0cm 60° 24°C 0mm 2.3kPa 24134m 3.6m/s 0.88m/s
14:00
21% 2.2°C 0mm 22% 0cm 62° 26°C 0mm 2.6kPa 24135m 4.8m/s 1.2m/s
15:00
25% 0.9°C 0mm 20% 0cm 59° 25°C 0mm 2.5kPa 24135m 5.5m/s 2.8m/s
16:00
21% 1.1°C 0mm 21% 0cm 52° 25°C 0mm 2.5kPa 24135m 5.8m/s 3.5m/s
17:00
18% 1.3°C 0mm 22% 0cm 44° 25°C 0mm 2.4kPa 24135m 5.5m/s 3.8m/s
18:00 ☾
14% 1.4°C 0mm 23% 0cm 34° 24°C 0mm 2.3kPa 24135m 4.9m/s 4.1m/s
19:00 ☾
13% 1.8°C 0mm 25% 0cm 25° 23°C 0mm 2kPa 24135m 4.3m/s 3.3m/s
20:00 ☾
11% 3.8°C 0mm 32% 0cm 15° 21°C 0mm 1.7kPa 24135m 4.6m/s 2.6m/s
21:00 ☾
10% 5.2°C 0mm 43% 0cm 6.7° 18°C 0mm 1.2kPa 24134m 1.7m/s 1.9m/s
22:00 ☾
8% 4.2°C 0mm 50% 0cm -1.2° 15°C 0mm 0.83kPa 24135m 1.4m/s 1.5m/s
23:00 ☾
5% 4°C 0mm 54% 0cm -8.2° 13°C 0mm 0.7kPa 24134m 1.2m/s 1.2m/s
Fri, Jul 10 Sunrise 05:44 Sunset 21:54
24:00 ☾
3% 4°C 0mm 56% 0cm -13° 13°C 0mm 0.64kPa 24135m 0.83m/s 0.86m/s
01:00 ☾
15% 4°C 0mm 56% 0cm -16° 12°C 0mm 0.63kPa 24134m 0.53m/s 0.36m/s
02:00 ☾
27% 4°C 0mm 56% 0cm -17° 12°C 0mm 0.63kPa 24134m 0.61m/s 0.12m/s
03:00 ☾
39% 4.1°C 0mm 58% 0cm -16° 12°C 0mm 0.61kPa 24135m 0.61m/s 0.33m/s
04:00 ☾
47% 4.1°C 0mm 59% 0cm -12° 12°C 0mm 0.56kPa 24134m 1m/s 0.9m/s
05:00 ☾
54% 4.1°C 0mm 61% 0cm -6° 11°C 0mm 0.53kPa 24134m 1.2m/s 1.2m/s
06:00
62% 4.1°C 0mm 63% 0cm 1.5° 11°C 0mm 0.48kPa 24134m 1.4m/s 1.4m/s
07:00
75% 4.9°C 0mm 63% 0cm 9.6° 12°C 0mm 0.5kPa 24135m 3.3m/s 1.8m/s
08:00
87% 4.9°C 0mm 54% 0cm 19° 14°C 0mm 0.74kPa 24134m 4.4m/s 2.7m/s
09:00
100% 4.9°C 0mm 47% 0cm 28° 16°C 0mm 0.97kPa 24134m 4.3m/s 3.2m/s
10:00
100% 4.9°C 0mm 42% 0cm 38° 18°C 0mm 1.2kPa 24135m 4.1m/s 3.4m/s
11:00
99% 4.9°C 0mm 37% 0cm 47° 20°C 0mm 1.4kPa 24135m 4m/s 3.5m/s
12:00
99% 4.7°C 0mm 33% 0cm 54° 22°C 0mm 1.8kPa 24135m 4.4m/s 3.9m/s
13:00
66% 5.8°C 0mm 38% 0cm 60° 21°C 0mm 1.5kPa 24135m 3.5m/s 3.2m/s
14:00
33% 6.7°C 0mm 43% 0cm 62° 20°C 0mm 1.3kPa 24135m 2.5m/s 2.5m/s
15:00
0% 7.3°C 0mm 48% 0cm 58° 18°C 0mm 1.1kPa 24135m 1.6m/s 1.8m/s
16:00
1% 7°C 0mm 54% 0cm 52° 16°C 0mm 0.86kPa 24135m 1.4m/s 1.5m/s
17:00
2% 6.4°C 0mm 59% 0cm 43° 14°C 0mm 0.67kPa 24135m 1.2m/s 1.2m/s
18:00 ☾
3% 5.7°C 0mm 64% 0cm 34° 12°C 0mm 0.51kPa 24135m 0.94m/s 0.97m/s
19:00 ☾
15% 5.7°C 0mm 67% 0cm 25° 12°C 0mm 0.45kPa 24135m 1m/s 0.97m/s
20:00 ☾
27% 5.7°C 0mm 70% 0cm 15° 11°C 0mm 0.4kPa 24135m 1.1m/s 0.96m/s
21:00 ☾
39% 5.6°C 0mm 72% 0cm 6.6° 10°C 0mm 0.35kPa 24135m 1.1m/s 0.96m/s
22:00 ☾
44% 5.6°C 0mm 74% 0cm -1.3° 9.9°C 0mm 0.31kPa 24135m 1.4m/s 1.2m/s
23:00 ☾
49% 5.6°C 0mm 76% 0cm -8.3° 9.5°C 0mm 0.28kPa 24135m 1.6m/s 1.5m/s
Sat, Jul 11 Sunrise 05:45 Sunset 21:53
24:00 ☾
54% 5.5°C 0mm 78% 0cm -13° 9.1°C 0mm 0.25kPa 24135m 1.8m/s 1.8m/s
01:00 ☾
65% 6.1°C 0mm 70% 0cm -17° 11°C 0mm 0.41kPa 24135m 3m/s 2.3m/s
02:00 ☾
75% 6.3°C 0mm 61% 0cm -17° 14°C 0mm 0.61kPa 24135m 4.2m/s 2.8m/s
03:00 ☾
86% 6.2°C 0mm 52% 0cm -16° 16°C 0mm 0.87kPa 24135m 5.3m/s 3.3m/s
04:00 ☾
87% 6.1°C 0mm 44% 0cm -12° 19°C 0mm 1.2kPa 24135m 7.1m/s 4.1m/s
05:00 ☾
87% 5.5°C 0mm 36% 0cm -6.1° 21°C 0mm 1.6kPa 24135m 8.9m/s 4.9m/s
06:00
88% 4.2°C 0mm 28% 0cm 1.4° 23°C 0mm 2.1kPa 24135m 11m/s 5.7m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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