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Rule Fog Hunter

Kananaskis - Fog Hunter - Canadian Rockies

Kananaskis, 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 Spread2.4°C
Visibility24134 (Clear)
Relative Humidity84%
Wind Speed1.4m/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 81 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%
02:000%
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%
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%
01:0033%
02:0043%
03:000%
04:000%
05:000%
06:000%
07:0068%
08:000%
09:0037%
10:0039%
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, May 21
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
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 05:45 Sunset 21:28
08:00
75% -2.1°C 0mm 84% 0cm 19° 0.33°C 0mm 0.1kPa 24134m 1.9m/s 1.4m/s
09:00
77% -0.5°C 0mm 81% 0cm 28° 2.4°C 0mm 0.14kPa 24134m 1.5m/s 0.97m/s
10:00
69% 0.5°C 0mm 76% 0cm 37° 4.3°C 0mm 0.2kPa 23886m 1.4m/s 0.56m/s
11:00
62% 1°C 0mm 73% 0cm 46° 5.4°C 0.13mm 0.24kPa 20738m 1.2m/s 0.32m/s
12:00
54% 1.5°C 0mm 71% 0.5cm 53° 6.3°C 0.56mm 0.27kPa 10977m 1.2m/s 0.56m/s
13:00
38% 1.8°C 0mm 70% 0.7cm 58° 6.9°C 0.63mm 0.3kPa 10022m 1.3m/s 0.54m/s
14:00
21% 1.9°C 0mm 68% 0cm 58° 7.4°C 1.3mm 0.33kPa 9442m 1.2m/s 0.36m/s
15:00
5% 1.9°C 0mm 66% 0cm 55° 7.7°C 2.1mm 0.35kPa 9307m 1.2m/s 0.16m/s
16:00
4% 1.4°C 0mm 67% 0cm 48° 7.1°C 2.9mm 0.33kPa 9956m 1m/s 0.84m/s
17:00
3% 1.1°C 0mm 69% 0cm 40° 6.4°C 3.6mm 0.3kPa 11420m 0.9m/s 1.2m/s
18:00 ☾
2% 1.3°C 0mm 71% 0cm 30° 6.2°C 4.2mm 0.28kPa 10435m 0.81m/s 0.99m/s
19:00 ☾
3% 1.3°C 0mm 74% 0cm 21° 5.6°C 0.56mm 0.24kPa 11435m 0.81m/s 0.89m/s
20:00 ☾
5% 2.5°C 0mm 84% 0cm 12° 4.9°C 0.81mm 0.13kPa 23454m 1.2m/s 0.81m/s
21:00 ☾
6% 0.9°C 0mm 94% 0cm 3.2° 1.8°C 0.81mm 0.04kPa 24134m 1.3m/s 1.5m/s
22:00 ☾
4% -1.4°C 0mm 92% 0cm -4.7° -0.34°C 0.81mm 0.05kPa 24134m 1.9m/s 2.5m/s
23:00 ☾
2% -2.3°C 0mm 90% 0cm -11° -0.9°C 0.81mm 0.06kPa 24134m 2.1m/s 2.7m/s
Tue, May 19 Sunrise 05:44 Sunset 21:29
24:00 ☾
0% -2.4°C 0mm 89% 0cm -16° -0.74°C 0.81mm 0.07kPa 24134m 2.7m/s 2.8m/s
01:00 ☾
0% -2.1°C 0mm 88% 0cm -19° -0.35°C 0mm 0.07kPa 24134m 3m/s 2.8m/s
02:00 ☾
1% -1.5°C 0mm 88% 0cm -19° 0.26°C 0mm 0.08kPa 24135m 3.2m/s 2.9m/s
03:00 ☾
1% -1.8°C 0mm 88% 0cm -17° -0.12°C 0mm 0.07kPa 24135m 3.2m/s 3m/s
04:00 ☾
1% -2.2°C 0mm 88% 0cm -12° -0.55°C 0mm 0.07kPa 24135m 3.2m/s 3.1m/s
05:00 ☾
1% -2.6°C 0mm 89% 0cm -6.2° -1°C 0mm 0.06kPa 24134m 3.6m/s 3.2m/s
06:00
1% -2.6°C 0mm 90% 0cm 1.6° -1.1°C 0mm 0.06kPa 24134m 3.5m/s 3.2m/s
07:00
4% -0.9°C 0mm 88% 0cm 9.9° 0.76°C 0mm 0.07kPa 24134m 3.7m/s 2.9m/s
08:00
6% 1.3°C 0mm 84% 0cm 19° 3.7°C 0mm 0.12kPa 24134m 3.6m/s 2.5m/s
09:00
9% 1.2°C 0mm 74% 0cm 28° 5.4°C 0mm 0.23kPa 24134m 3.4m/s 2.3m/s
10:00
7% 1.1°C 0mm 67% 0cm 38° 6.7°C 0mm 0.32kPa 24135m 3.6m/s 2.2m/s
11:00
5% 1.1°C 0mm 61% 0cm 46° 8.1°C 0mm 0.42kPa 24134m 3.4m/s 2m/s
12:00
3% 1°C 0mm 56% 0cm 54° 9.3°C 0mm 0.52kPa 24135m 4.1m/s 2.1m/s
13:00
2% 0.4°C 0mm 49% 0cm 58° 11°C 0.06mm 0.65kPa 23183m 5m/s 2m/s
14:00
1% 0°C 0mm 46% 0cm 59° 11°C 0.06mm 0.71kPa 24134m 4.4m/s 2.5m/s
15:00
0% -0.2°C 0mm 45% 0cm 55° 11°C 0.06mm 0.73kPa 24135m 4.4m/s 2.9m/s
16:00
0% -0.8°C 0mm 43% 0cm 48° 11°C 0.06mm 0.77kPa 24135m 6m/s 3.2m/s
17:00
0% -1°C 0mm 43% 0cm 40° 11°C 0.06mm 0.74kPa 24134m 5m/s 3.2m/s
18:00 ☾
0% -0.6°C 0mm 46% 0cm 30° 10°C 0.06mm 0.67kPa 24134m 5m/s 2.9m/s
19:00 ☾
0% 0.5°C 0mm 52% 0cm 21° 9.9°C 0mm 0.58kPa 24135m 4.7m/s 2.3m/s
20:00 ☾
0% 2.4°C 0mm 67% 0cm 12° 8.2°C 0.06mm 0.36kPa 17846m 1.7m/s 1.6m/s
21:00 ☾
0% 2.4°C 0.06mm 81% 0cm 3.4° 5.4°C 0.81mm 0.17kPa 12690m 4m/s 2.1m/s
22:00 ☾
0% 3.2°C 0.25mm 98% 0cm -4.5° 3.5°C 1.8mm 0.01kPa 1121m 4.1m/s 2.1m/s
23:00 ☾
0% 2.9°C 0.55mm 98% 0cm -11° 3.2°C 2.7mm 0.01kPa 176m 2.8m/s 1.7m/s
Wed, May 20 Sunrise 05:43 Sunset 21:30
24:00 ☾
0% 2.7°C 0.28mm 98% 0cm -16° 3.1°C 3.4mm 0.02kPa 284m 1.7m/s 1.4m/s
01:00 ☾
0% 2.2°C 0.15mm 95% 0cm -18° 3°C 0.5mm 0.04kPa 10739m 1.1m/s 1.1m/s
02:00 ☾
1% 2°C 0.49mm 97% 0cm -19° 2.4°C 0.94mm 0.02kPa 9032m 1.7m/s 1.6m/s
03:00 ☾
1% 1.6°C 0.87mm 100% 0.91cm -17° 1.6°C 2.1mm 0kPa 36m 2.6m/s 2.1m/s
04:00 ☾
1% 0.7°C 1.3mm 99% 1.5cm -12° 0.77°C 3.4mm 0kPa 23m 2m/s 1.5m/s
05:00 ☾
0% 0.4°C 1.1mm 100% 1.2cm -6.1° 0.47°C 4.6mm 0kPa 23m 1m/s 0.82m/s
06:00
0% 0.3°C 0.46mm 100% 0.46cm 1.7° 0.35°C 5.3mm 0kPa 33m 0.92m/s 0.32m/s
07:00
0% 0.5°C 0.13mm 98% 0.13cm 10° 0.71°C 0.25mm 0.01kPa 82m 1.4m/s 0.85m/s
08:00
0% 0.2°C 0.09mm 93% 0cm 19° 1.3°C 0.38mm 0.05kPa 20756m 1.8m/s 1.3m/s
09:00
0% 1°C 0.07mm 91% 0.18cm 29° 2.3°C 0.5mm 0.06kPa 841m 2.3m/s 1.5m/s
10:00
0% 1.2°C 0.06mm 91% 0.4cm 38° 2.6°C 0.81mm 0.07kPa 413m 2.6m/s 1.8m/s
11:00
0% 1.4°C 0.18mm 92% 0.73cm 46° 2.6°C 1.3mm 0.06kPa 189m 2.9m/s 2.3m/s
12:00
0% 2°C 1.4mm 98% 1.8cm 54° 2.3°C 2.6mm 0.01kPa 33m 3.1m/s 2.7m/s
13:00
0% 1.5°C 0.97mm 96% 1.2cm 58° 2.1°C 1.9mm 0.03kPa 8067m 2.5m/s 2.3m/s
14:00
0% 0.9°C 0.5mm 94% 0.58cm 59° 1.9°C 1.2mm 0.04kPa 16101m 1.9m/s 1.9m/s
15:00
0% 0.4°C 0.03mm 91% 0cm 55° 1.7°C 0.44mm 0.06kPa 24135m 1.3m/s 1.6m/s
16:00
0% -0.8°C 0.02mm 92% 0cm 48° 0.38°C 0.44mm 0.05kPa 24135m 1.7m/s 1.9m/s
17:00
0% -1.9°C 0.01mm 93% 0cm 40° -0.91°C 0.44mm 0.04kPa 24135m 2.1m/s 2.2m/s
18:00 ☾
0% -3.1°C 0mm 94% 0cm 31° -2.2°C 0.44mm 0.03kPa 24135m 2.4m/s 2.6m/s
19:00 ☾
0% -3.4°C 0mm 93% 0cm 21° -2.4°C 0.29mm 0.04kPa 24135m 2.5m/s 2.6m/s
20:00 ☾
1% -3.7°C 0mm 93% 0cm 12° -2.7°C 0.15mm 0.04kPa 24135m 2.6m/s 2.7m/s
21:00 ☾
1% -4°C 0mm 92% 0cm 3.6° -2.9°C 0mm 0.04kPa 24135m 2.6m/s 2.7m/s
22:00 ☾
1% -4.1°C 0mm 91% 0cm -4.4° -2.9°C 0mm 0.04kPa 24135m 2.7m/s 2.8m/s
23:00 ☾
2% -4.2°C 0mm 91% 0cm -11° -2.9°C 0mm 0.05kPa 24135m 2.8m/s 2.8m/s
Thu, May 21 Sunrise 05:42 Sunset 21:32
24:00 ☾
2% -4.3°C 0mm 90% 0cm -16° -2.9°C 0mm 0.05kPa 24135m 2.9m/s 2.8m/s
01:00 ☾
14% -3°C 0mm 81% 0cm -18° -0.12°C 0mm 0.12kPa 24135m 2.4m/s 2.2m/s
02:00 ☾
26% -1.9°C 0mm 72% 0cm -19° 2.7°C 0mm 0.21kPa 24135m 1.9m/s 1.6m/s
03:00 ☾
38% -1.1°C 0mm 63% 0cm -16° 5.5°C 0mm 0.34kPa 24135m 1.4m/s 1m/s
04:00 ☾
39% -0.9°C 0mm 56% 0cm -12° 7.2°C 0mm 0.44kPa 24135m 1.4m/s 0.91m/s
05:00 ☾
41% -0.8°C 0mm 50% 0cm -5.9° 9°C 0mm 0.57kPa 24135m 1.5m/s 0.78m/s
06:00
42% -1°C 0mm 44% 0cm 1.9° 11°C 0mm 0.72kPa 24135m 1.5m/s 0.66m/s
07:00
47% -0.9°C 0mm 42% 0cm 10° 11°C 0mm 0.77kPa 24135m 1.7m/s 0.82m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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