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Rule Fog Hunter

Canmore - Fog Hunter - Canadian Rockies

Canmore, Alberta, 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 Spread7.4°C
Visibility15914 (Clear)
Relative Humidity59%
Wind Speed1.1m/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 87 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Edmonton
Fog Probability
≥ 75.0%
Sun, May 17
22:000%
23:000%
Mon, May 18
24:000%
01:000%
02:0055%
03:000%
04:000%
05:000%
06:0055%
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%
Tue, May 19
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%
Wed, May 20
24:000%
01:0069%
02:0067%
03:0065%
04:000%
05:000%
06:000%
07:0069%
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%
21:0055%
22:0055%
23:0055%
Thu, May 21
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%
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
Mon, May 18 Sunrise 05:47 Sunset 21:29
14:00
18% -0.8°C 0mm 59% 0.37cm 58° 6.6°C 0.69mm 0.4kPa 15914m 1.8m/s 1.1m/s
15:00
7% -0.6°C 0mm 58% 0.36cm 55° 7.2°C 1.1mm 0.43kPa 17126m 1.7m/s 0.86m/s
16:00
5% -1.1°C 0mm 56% 0.31cm 48° 7.1°C 1.4mm 0.44kPa 18582m 2m/s 0.83m/s
17:00
2% -1.6°C 0mm 55% 0.29cm 40° 6.9°C 1.6mm 0.45kPa 19524m 2.2m/s 0.65m/s
18:00 ☾
0% -1.9°C 0mm 55% 0.31cm 31° 6.4°C 1.9mm 0.43kPa 19383m 2m/s 0.3m/s
19:00 ☾
1% -1.7°C 0mm 59% 0.22cm 21° 5.6°C 0.19mm 0.37kPa 18060m 1.4m/s 0.51m/s
20:00 ☾
2% 0.7°C 0mm 75% 0cm 12° 4.7°C 0.31mm 0.21kPa 24134m 1m/s 0.85m/s
21:00 ☾
3% -0.4°C 0mm 91% 0cm 3.4° 0.96°C 0.38mm 0.06kPa 24135m 0.92m/s 0.91m/s
22:00 ☾
2% -3.1°C 0mm 92% 0cm -4.5° -1.9°C 0.38mm 0.04kPa 24135m 1.6m/s 2m/s
23:00 ☾
1% -3.7°C 0mm 90% 0cm -11° -2.3°C 0.38mm 0.05kPa 24134m 1.8m/s 2.3m/s
Tue, May 19 Sunrise 05:45 Sunset 21:30
24:00 ☾
0% -3.9°C 0mm 88% 0cm -16° -2.2°C 0.38mm 0.06kPa 24134m 1.9m/s 2.4m/s
01:00 ☾
0% -3.8°C 0mm 87% 0cm -19° -2°C 0mm 0.07kPa 24135m 1.8m/s 2.4m/s
02:00 ☾
0% -3.7°C 0mm 87% 0cm -19° -1.8°C 0mm 0.07kPa 24135m 1.9m/s 2.5m/s
03:00 ☾
0% -3.6°C 0mm 87% 0cm -17° -1.7°C 0mm 0.07kPa 24134m 1.9m/s 2.5m/s
04:00 ☾
0% -3.6°C 0mm 88% 0cm -13° -1.9°C 0mm 0.06kPa 24135m 2m/s 2.6m/s
05:00 ☾
0% -3.7°C 0mm 89% 0cm -6.4° -2.1°C 0mm 0.06kPa 24134m 2m/s 2.8m/s
06:00
0% -3.5°C 0mm 90% 0cm 1.5° -2°C 0mm 0.05kPa 24135m 2.5m/s 2.8m/s
07:00
2% -2.1°C 0mm 86% 0cm 9.7° -0.02°C 0mm 0.09kPa 24135m 2.7m/s 2.5m/s
08:00
5% -0.8°C 0mm 76% 0cm 19° 2.9°C 0mm 0.18kPa 24134m 2.6m/s 2.3m/s
09:00
7% -0.8°C 0mm 70% 0cm 28° 4.1°C 0mm 0.24kPa 24134m 2.8m/s 2.3m/s
10:00
5% -0.7°C 0mm 65% 0cm 37° 5.3°C 0mm 0.31kPa 24135m 2.8m/s 2.2m/s
11:00
3% -0.6°C 0mm 60% 0cm 46° 6.5°C 0mm 0.38kPa 24135m 3m/s 2.2m/s
12:00
1% -0.6°C 0mm 56% 0cm 53° 7.7°C 0mm 0.46kPa 24134m 3.6m/s 2.2m/s
13:00
1% -0.7°C 0mm 53% 0cm 58° 8.4°C 0.06mm 0.52kPa 17694m 4.7m/s 2.3m/s
14:00
0% -1.1°C 0mm 51% 0cm 59° 8.6°C 0.13mm 0.55kPa 24135m 4.1m/s 2.4m/s
15:00
0% -1°C 0mm 49% 0cm 55° 9.1°C 0.13mm 0.59kPa 22225m 4m/s 2.3m/s
16:00
0% -1.3°C 0mm 48% 0cm 48° 9.1°C 0.25mm 0.6kPa 22861m 4.1m/s 2.3m/s
17:00
0% -1.4°C 0mm 48% 0cm 40° 9°C 0.31mm 0.6kPa 24134m 3.7m/s 2.1m/s
18:00 ☾
0% -1.3°C 0mm 50% 0cm 31° 8.4°C 0.44mm 0.54kPa 23564m 3.2m/s 1.9m/s
19:00 ☾
2% 0.4°C 0mm 62% 0cm 21° 7.1°C 0.5mm 0.38kPa 10075m 1.1m/s 0.6m/s
20:00 ☾
4% 1.7°C 0mm 76% 0cm 12° 5.7°C 1.2mm 0.22kPa 14412m 0.92m/s 0.3m/s
21:00 ☾
6% 0.5°C 0mm 85% 0cm 3.6° 2.8°C 1.6mm 0.12kPa 17617m 1m/s 0.46m/s
22:00 ☾
4% -0.2°C 0.06mm 95% 0cm -4.4° 0.52°C 2.1mm 0.03kPa 7659m 1.8m/s 1.6m/s
23:00 ☾
3% 0.3°C 0.14mm 99% 0cm -11° 0.41°C 2.4mm 0kPa 240m 2.5m/s 2.1m/s
Wed, May 20 Sunrise 05:44 Sunset 21:32
24:00 ☾
1% 1°C 0.07mm 99% 0.16cm -16° 1.1°C 2.7mm 0.01kPa 98m 2.2m/s 1.7m/s
01:00 ☾
1% 1°C 0.22mm 99% 0.26cm -18° 1.2°C 0.25mm 0.01kPa 75m 1.9m/s 1.5m/s
02:00 ☾
0% 0.6°C 0.26mm 98% 0.27cm -19° 0.83°C 0.5mm 0.01kPa 121m 1.9m/s 1.5m/s
03:00 ☾
0% 0.2°C 0.4mm 98% 0.49cm -17° 0.55°C 0.88mm 0.02kPa 384m 1.6m/s 1.3m/s
04:00 ☾
0% 0.4°C 0.86mm 99% 0.91cm -12° 0.47°C 1.5mm 0.01kPa 75m 1.3m/s 1.2m/s
05:00 ☾
0% 0.1°C 0.46mm 99% 0.54cm -6.2° 0.23°C 2.2mm 0kPa 55m 1.2m/s 0.97m/s
06:00
0% -0.2°C 0.14mm 98% 0.14cm 1.6° 0.07°C 2.5mm 0.01kPa 181m 1.6m/s 1.3m/s
07:00
0% -0.6°C 0.13mm 96% 0.13cm 9.8° -0.13°C 0.13mm 0.02kPa 588m 1.8m/s 1.4m/s
08:00
1% -0.8°C 0.25mm 90% 0.26cm 19° 0.67°C 0.31mm 0.07kPa 10862m 2.1m/s 1.5m/s
09:00
1% -1.2°C 0.17mm 83% 0.2cm 28° 1.4°C 0.56mm 0.12kPa 21793m 2m/s 1.5m/s
10:00
1% -1.3°C 0.09mm 77% 0.13cm 38° 2.2°C 0.75mm 0.16kPa 23098m 2m/s 1.6m/s
11:00
0% -1.1°C 0.07mm 72% 0cm 46° 3.5°C 0.94mm 0.22kPa 12805m 1.8m/s 1.5m/s
12:00
0% -0.9°C 0.03mm 70% 0.23cm 54° 4°C 1.2mm 0.24kPa 3717m 1.7m/s 1.5m/s
13:00
0% -0.1°C 0.1mm 76% 0.54cm 58° 3.7°C 0.44mm 0.19kPa 1601m 1.9m/s 1.8m/s
14:00
0% 0.7°C 0.45mm 84% 1cm 59° 3.1°C 1.3mm 0.12kPa 885m 2.3m/s 2m/s
15:00
0% 1.3°C 0.94mm 90% 1.3cm 55° 2.7°C 2.6mm 0.07kPa 162m 2.4m/s 2.1m/s
16:00
0% 1.5°C 1.4mm 97% 1.7cm 48° 2°C 4.3mm 0.02kPa 56m 2m/s 1.8m/s
17:00
1% 1.5°C 1.3mm 99% 1.5cm 40° 1.7°C 6.1mm 0.01kPa 30m 1.5m/s 1.5m/s
18:00 ☾
1% 0.9°C 0.19mm 96% 0cm 31° 1.5°C 7mm 0.03kPa 64m 0.51m/s 0.47m/s
19:00 ☾
7% -0.8°C 0.13mm 96% 0cm 21° -0.26°C 4.7mm 0.03kPa 8088m 0.61m/s 0.57m/s
20:00 ☾
14% -2.6°C 0.06mm 96% 0cm 12° -2°C 2.3mm 0.02kPa 16111m 0.71m/s 0.68m/s
21:00 ☾
20% -4.4°C 0mm 95% 0cm 3.7° -3.7°C 0mm 0.02kPa 24135m 0.81m/s 0.78m/s
22:00 ☾
20% -4.6°C 0mm 95% 0cm -4.2° -3.9°C 0mm 0.02kPa 24135m 0.81m/s 0.84m/s
23:00 ☾
21% -4.8°C 0mm 94% 0cm -11° -4°C 0mm 0.03kPa 24135m 0.82m/s 0.9m/s
Thu, May 21 Sunrise 05:43 Sunset 21:33
24:00 ☾
21% -5.1°C 0mm 94% 0cm -16° -4.2°C 0mm 0.03kPa 24135m 0.82m/s 0.96m/s
01:00 ☾
30% -4.5°C 0mm 82% 0cm -18° -1.8°C 0mm 0.1kPa 24135m 0.81m/s 0.77m/s
02:00 ☾
39% -4.1°C 0mm 70% 0cm -19° 0.65°C 0mm 0.19kPa 24135m 0.81m/s 0.58m/s
03:00 ☾
48% -4.3°C 0mm 58% 0cm -16° 3.1°C 0mm 0.32kPa 24135m 0.8m/s 0.39m/s
04:00 ☾
48% -4.2°C 0mm 53% 0cm -12° 4.5°C 0mm 0.4kPa 24135m 1.1m/s 0.76m/s
05:00 ☾
48% -4.2°C 0mm 48% 0cm -6° 6°C 0mm 0.49kPa 24135m 1.5m/s 1.1m/s
06:00
48% -4.4°C 0mm 43% 0cm 1.7° 7.5°C 0mm 0.59kPa 24135m 1.8m/s 1.5m/s
07:00
49% -4.3°C 0mm 41% 0cm 10° 8°C 0mm 0.63kPa 24135m 2.1m/s 1.6m/s
08:00
51% -4.1°C 0mm 40% 0cm 19° 8.6°C 0mm 0.67kPa 24135m 2.3m/s 1.8m/s
09:00
52% -4°C 0mm 39% 0cm 28° 9.2°C 0mm 0.71kPa 24135m 2.6m/s 2m/s
10:00
47% -4.4°C 0mm 38% 0cm 38° 9°C 0mm 0.71kPa 24135m 2.7m/s 1.9m/s
11:00
43% -4.8°C 0mm 37% 0cm 46° 8.9°C 0mm 0.71kPa 24135m 2.8m/s 1.9m/s
12:00
38% -5.3°C 0mm 37% 0cm 54° 8.7°C 0mm 0.71kPa 24135m 2.8m/s 1.9m/s
13:00
29% -4.1°C 0mm 43% 0cm 58° 7.5°C 0mm 0.59kPa 24135m 2.3m/s 1.8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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