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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 Spread1.8°C
Visibility24135 (Clear)
Relative Humidity88%
Wind Speed1.0m/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 79 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Edmonton
Fog Probability
≥ 75.0%
Sat, May 23
23:000%
Sun, May 24
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%
Mon, May 25
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 26
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%
21:0044%
22:0030%
23:0030%
Wed, May 27
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
Sun, May 24 Sunrise 05:38 Sunset 21:36
07:00
0% 2.9°C 0mm 88% 0cm 11° 4.7°C 0mm 0.11kPa 24135m 1.3m/s 1m/s
08:00
1% 3.1°C 0mm 82% 0cm 20° 5.9°C 0mm 0.17kPa 24135m 1.2m/s 1.1m/s
09:00
1% 3.2°C 0mm 73% 0cm 29° 7.7°C 0mm 0.28kPa 24134m 1.6m/s 1.1m/s
10:00
1% 3.1°C 0mm 60% 0cm 38° 11°C 0mm 0.52kPa 24134m 2.6m/s 1m/s
11:00
0% 1.2°C 0mm 44% 0cm 47° 13°C 0mm 0.83kPa 24134m 5.3m/s 0.7m/s
12:00
0% -0.5°C 0mm 36% 0cm 54° 15°C 0mm 1.1kPa 24134m 5.8m/s 0.16m/s
13:00
0% -1.7°C 0mm 31% 0cm 59° 15°C 0mm 1.2kPa 24135m 5.8m/s 1.6m/s
14:00
0% -1.9°C 0mm 30% 0cm 60° 16°C 0mm 1.2kPa 24134m 6.9m/s 3.9m/s
15:00
0% -1.7°C 0mm 30% 0cm 56° 16°C 0mm 1.2kPa 24135m 7.7m/s 4.9m/s
16:00
0% -1°C 0mm 32% 0cm 49° 16°C 0mm 1.2kPa 24134m 7.6m/s 4.7m/s
17:00
0% -0.1°C 0mm 35% 0cm 40° 15°C 0mm 1.1kPa 24135m 7m/s 3.9m/s
18:00 ☾
0% 0.7°C 0mm 40% 0cm 31° 14°C 0mm 0.97kPa 24135m 5.7m/s 2.8m/s
19:00 ☾
0% -0.3°C 0mm 36% 0cm 22° 14°C 0mm 1.1kPa 24135m 7.2m/s 2.6m/s
20:00 ☾
0% 0.6°C 0mm 41% 0cm 13° 14°C 0mm 0.92kPa 24135m 3.6m/s 1.7m/s
21:00 ☾
0% 0.4°C 0mm 49% 0cm 4.2° 11°C 0mm 0.65kPa 24135m 1m/s 1.2m/s
22:00 ☾
0% 0°C 0mm 52% 0cm -3.6° 9.4°C 0mm 0.57kPa 24134m 1.6m/s 1.9m/s
23:00 ☾
0% 0.1°C 0mm 57% 0cm -10° 8.2°C 0mm 0.47kPa 24134m 2m/s 2.4m/s
Mon, May 25 Sunrise 05:37 Sunset 21:37
24:00 ☾
0% 0.1°C 0mm 60% 0cm -15° 7.4°C 0mm 0.41kPa 24134m 2.1m/s 2.6m/s
01:00 ☾
0% 0.2°C 0mm 63% 0cm -18° 6.8°C 0mm 0.37kPa 24135m 2.9m/s 2.8m/s
02:00 ☾
0% 0.4°C 0mm 65% 0cm -18° 6.4°C 0mm 0.33kPa 24134m 3.2m/s 2.9m/s
03:00 ☾
0% 0.8°C 0mm 70% 0cm -16° 5.9°C 0mm 0.28kPa 24135m 3.2m/s 2.9m/s
04:00 ☾
0% 1.6°C 0mm 74% 0cm -11° 5.8°C 0mm 0.24kPa 24135m 3.3m/s 2.9m/s
05:00 ☾
1% 2.1°C 0mm 77% 0cm -5.3° 5.8°C 0mm 0.21kPa 24134m 3.2m/s 2.9m/s
06:00
1% 2.5°C 0mm 79% 0cm 2.4° 5.8°C 0mm 0.19kPa 24135m 3.3m/s 3m/s
07:00
3% 3.1°C 0mm 75% 0cm 11° 7.2°C 0mm 0.25kPa 24134m 3.7m/s 2.7m/s
08:00
5% 3.3°C 0mm 64% 0cm 20° 9.9°C 0mm 0.44kPa 24134m 3.3m/s 2.3m/s
09:00
7% 2.9°C 0mm 53% 0cm 29° 12°C 0mm 0.66kPa 24134m 3.3m/s 2m/s
10:00
8% 1.9°C 0mm 43% 0cm 38° 14°C 0mm 0.92kPa 24134m 5.2m/s 2m/s
11:00
9% 0.1°C 0mm 34% 0cm 47° 16°C 0mm 1.2kPa 24135m 7m/s 2.3m/s
12:00
10% -0.6°C 0mm 30% 0cm 55° 17°C 0mm 1.4kPa 24134m 7.2m/s 2.5m/s
13:00
23% -1°C 0mm 28% 0cm 59° 18°C 0mm 1.5kPa 24135m 8.9m/s 3.4m/s
14:00
35% -1.2°C 0mm 27% 0cm 60° 18°C 0mm 1.5kPa 24134m 9.2m/s 4m/s
15:00
48% -1.4°C 0mm 26% 0cm 56° 19°C 0mm 1.6kPa 24135m 9.3m/s 3.9m/s
16:00
43% -2.3°C 0mm 24% 0cm 49° 19°C 0mm 1.6kPa 24134m 9m/s 3.8m/s
17:00
38% -2.8°C 0mm 24% 0cm 41° 18°C 0mm 1.6kPa 24134m 8.5m/s 4.4m/s
18:00 ☾
33% -1.5°C 0mm 28% 0cm 31° 17°C 0mm 1.4kPa 24135m 7.7m/s 3.4m/s
19:00 ☾
25% -1°C 0mm 31% 0cm 22° 16°C 0mm 1.3kPa 24134m 5.6m/s 2.3m/s
20:00 ☾
16% 0.8°C 0mm 39% 0cm 13° 15°C 0mm 1kPa 24135m 2.2m/s 1.9m/s
21:00 ☾
8% 0.5°C 0mm 45% 0cm 4.3° 12°C 0mm 0.78kPa 24134m 2.1m/s 2.4m/s
22:00 ☾
6% -0.4°C 0mm 46% 0cm -3.5° 11°C 0mm 0.68kPa 24134m 2.2m/s 2.6m/s
23:00 ☾
3% -0.7°C 0mm 48% 0cm -10° 9.9°C 0mm 0.64kPa 24134m 2.9m/s 2.6m/s
Tue, May 26 Sunrise 05:36 Sunset 21:38
24:00 ☾
1% -1.2°C 0mm 47% 0cm -15° 9.4°C 0mm 0.62kPa 24135m 2m/s 2.3m/s
01:00 ☾
2% -0.9°C 0mm 46% 0cm -17° 10°C 0mm 0.67kPa 24134m 2.3m/s 2.2m/s
02:00 ☾
3% -1.3°C 0mm 50% 0cm -18° 8.4°C 0mm 0.55kPa 24135m 1.9m/s 2.3m/s
03:00 ☾
4% -0.6°C 0.35mm 52% 0cm -16° 8.6°C 0.06mm 0.53kPa 22588m 4.5m/s 3.4m/s
04:00 ☾
3% 3.3°C 0.01mm 70% 0cm -11° 8.4°C 0.25mm 0.33kPa 24135m 4.3m/s 3.4m/s
05:00 ☾
2% 4.2°C 0.04mm 79% 0cm -5.1° 7.6°C 0.31mm 0.22kPa 24134m 4.2m/s 3.2m/s
06:00
1% 4.8°C 0mm 81% 0cm 2.5° 7.8°C 0.38mm 0.2kPa 24134m 2.9m/s 2.5m/s
07:00
1% 5.4°C 0mm 80% 0cm 11° 8.7°C 0mm 0.23kPa 24134m 3.1m/s 2.4m/s
08:00
0% 5.6°C 0mm 66% 0cm 20° 12°C 0mm 0.46kPa 24135m 2.9m/s 2.1m/s
09:00
0% 5.8°C 0mm 56% 0cm 29° 14°C 0mm 0.71kPa 24135m 1.6m/s 1.3m/s
10:00
0% 5.8°C 0mm 47% 0cm 39° 17°C 0mm 1kPa 24134m 1.4m/s 1.3m/s
11:00
0% 5.5°C 0mm 41% 0cm 47° 19°C 0mm 1.3kPa 24135m 2.2m/s 1.3m/s
12:00
0% 4.9°C 0mm 36% 0cm 55° 20°C 0mm 1.5kPa 24134m 4.2m/s 1.8m/s
13:00
3% 7.1°C 0mm 49% 0cm 59° 18°C 0.44mm 1.1kPa 22266m 3.1m/s 1.5m/s
14:00
6% 8.3°C 0mm 61% 0cm 60° 16°C 0.88mm 0.69kPa 20397m 2.1m/s 1.3m/s
15:00
9% 8.8°C 0mm 74% 0cm 56° 13°C 1.3mm 0.41kPa 18529m 1m/s 1.1m/s
16:00
7% 9.2°C 0mm 80% 0cm 49° 12°C 1.6mm 0.28kPa 20398m 1.7m/s 1.3m/s
17:00
4% 9.5°C 0mm 87% 0cm 41° 12°C 1.9mm 0.17kPa 22266m 2.5m/s 1.6m/s
18:00 ☾
2% 9.7°C 0mm 94% 0cm 32° 11°C 2.1mm 0.07kPa 24135m 3.2m/s 1.8m/s
19:00 ☾
1% 9.6°C 0.06mm 95% 0cm 22° 10°C 1.6mm 0.06kPa 19228m 2.8m/s 1.6m/s
20:00 ☾
1% 9.6°C 0.12mm 97% 0cm 13° 10°C 1.1mm 0.04kPa 14321m 2.4m/s 1.3m/s
21:00 ☾
0% 9.6°C 0.18mm 98% 0cm 4.5° 9.9°C 0.63mm 0.02kPa 9414m 2m/s 1.1m/s
22:00 ☾
0% 9.5°C 0.12mm 97% 0cm -3.3° 10°C 0.73mm 0.04kPa 14321m 1.6m/s 0.91m/s
23:00 ☾
0% 9.4°C 0.06mm 95% 0cm -9.8° 10°C 0.83mm 0.06kPa 19228m 1.1m/s 0.74m/s
Wed, May 27 Sunrise 05:35 Sunset 21:39
24:00 ☾
0% 9.4°C 0mm 94% 0cm -15° 10°C 0.94mm 0.08kPa 24135m 0.64m/s 0.57m/s
01:00 ☾
1% 9.4°C 0.03mm 94% 0cm -17° 10°C 0.67mm 0.08kPa 24135m 0.87m/s 0.75m/s
02:00 ☾
1% 9.4°C 0.06mm 93% 0cm -17° 10°C 0.4mm 0.08kPa 24135m 1.1m/s 0.93m/s
03:00 ☾
2% 9.4°C 0.09mm 93% 0cm -15° 10°C 0.13mm 0.08kPa 24135m 1.3m/s 1.1m/s
04:00 ☾
2% 9.3°C 0.06mm 93% 0cm -11° 10°C 0.15mm 0.09kPa 24135m 1.3m/s 1.1m/s
05:00 ☾
1% 9.2°C 0.04mm 92% 0cm -5° 10°C 0.17mm 0.1kPa 24135m 1.2m/s 1.1m/s
06:00
1% 9.1°C 0.01mm 92% 0cm 2.7° 10°C 0.19mm 0.1kPa 24135m 1.2m/s 1.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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