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Rule Fog Hunter

Nordegg - Fog Hunter - Canadian Rockies

Nordegg, 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 Spread9.1°C
Visibility24134 (Clear)
Relative Humidity54%
Wind Speed1.9m/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%
01:0073%
02:0073%
03:0073%
04:0073%
05:0041%
06:0039%
07:0055%
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%
20:0027%
21:0055%
22:0055%
23:0055%
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 05:31 Sunset 22:05
07:00
2% 3.9°C 0mm 54% 0cm 11° 13°C 0mm 0.69kPa 24134m 1.6m/s 1.9m/s
08:00
1% 6°C 0mm 55% 0cm 19° 15°C 0mm 0.76kPa 24135m 1.7m/s 1.2m/s
09:00
1% 5.2°C 0mm 42% 0cm 28° 18°C 0mm 1.2kPa 24135m 1.7m/s 0.88m/s
10:00
1% 5.7°C 0mm 39% 0cm 37° 20°C 0mm 1.4kPa 24135m 2.4m/s 1.2m/s
11:00
0% 7.3°C 0mm 44% 0cm 46° 20°C 0mm 1.3kPa 24135m 3.9m/s 3.8m/s
12:00
0% 9.1°C 0mm 57% 0cm 53° 18°C 0.19mm 0.88kPa 24134m 5m/s 5.6m/s
13:00
2% 9.3°C 0mm 56% 0cm 59° 18°C 0.13mm 0.9kPa 24134m 5.4m/s 6.3m/s
14:00
5% 8.5°C 0mm 57% 0cm 60° 17°C 0.25mm 0.83kPa 24134m 4m/s 4.1m/s
15:00
7% 8.3°C 0mm 56% 0cm 57° 17°C 0.56mm 0.87kPa 24135m 3.1m/s 3.8m/s
16:00
8% 7.6°C 0mm 52% 0cm 51° 18°C 0.69mm 0.98kPa 24134m 2.4m/s 3.2m/s
17:00
8% 7.2°C 0mm 48% 0cm 43° 18°C 0.75mm 1.1kPa 24134m 2.4m/s 3.5m/s
18:00 ☾
9% 7.3°C 0mm 49% 0cm 34° 18°C 0.88mm 1.1kPa 19765m 1.7m/s 2.8m/s
19:00 ☾
25% 8.1°C 0mm 55% 0cm 25° 17°C 0.19mm 0.88kPa 20533m 2m/s 2m/s
20:00 ☾
42% 9°C 0mm 62% 0cm 16° 16°C 0.38mm 0.7kPa 24135m 2.6m/s 1.9m/s
21:00 ☾
58% 9.8°C 0mm 75% 0cm 7.6° 14°C 0.44mm 0.41kPa 24134m 1.5m/s 1.5m/s
22:00 ☾
48% 9°C 0mm 87% 0cm 0.32° 11°C 1mm 0.17kPa 7930m 0.72m/s 0.72m/s
23:00 ☾
38% 8.6°C 0mm 94% 0cm -6.6° 9.4°C 1.7mm 0.06kPa 15349m 1.2m/s 1.4m/s
Thu, Jul 9 Sunrise 05:32 Sunset 22:04
24:00 ☾
28% 8.2°C 0mm 98% 0cm -11° 8.6°C 2mm 0.02kPa 18364m 0.91m/s 0.93m/s
01:00 ☾
19% 8.3°C 0mm 99% 0cm -14° 8.5°C 0mm 0.01kPa 23237m 1.5m/s 1.5m/s
02:00 ☾
9% 8.3°C 0mm 99% 0cm -15° 8.5°C 0mm 0.01kPa 24134m 1.6m/s 1.7m/s
03:00 ☾
0% 8.3°C 0mm 99% 0cm -14° 8.5°C 0mm 0.01kPa 19018m 2m/s 1.7m/s
04:00 ☾
0% 8.1°C 0mm 99% 0cm -9.9° 8.3°C 0.19mm 0.01kPa 21591m 2.8m/s 1.9m/s
05:00 ☾
0% 8°C 0mm 99% 0cm -4.3° 8.1°C 0.25mm 0.01kPa 24135m 3m/s 1.9m/s
06:00
0% 8°C 0mm 98% 0cm 2.8° 8.3°C 0.25mm 0.02kPa 24135m 1.9m/s 1.6m/s
07:00
0% 8.9°C 0mm 96% 0cm 11° 9.4°C 0mm 0.04kPa 24134m 1.9m/s 1.3m/s
08:00
0% 9.5°C 0mm 91% 0cm 19° 11°C 0mm 0.12kPa 24135m 1.5m/s 0.88m/s
09:00
0% 9.8°C 0mm 81% 0cm 28° 13°C 0mm 0.28kPa 24134m 0.92m/s 0.6m/s
10:00
0% 10°C 0mm 77% 0cm 37° 14°C 0.38mm 0.38kPa 14237m 2.1m/s 1.5m/s
11:00
0% 9.1°C 0mm 63% 0cm 46° 16°C 0.5mm 0.67kPa 24135m 3.1m/s 2.3m/s
12:00
0% 8.8°C 0mm 61% 0cm 53° 16°C 0.88mm 0.72kPa 12106m 3.5m/s 3.1m/s
13:00
7% 10°C 0mm 70% 0cm 58° 15°C 0.81mm 0.52kPa 22559m 2.8m/s 2.9m/s
14:00
13% 8.9°C 0mm 60% 0cm 60° 17°C 1.4mm 0.75kPa 4959m 2.5m/s 2.3m/s
15:00
20% 11°C 0.02mm 70% 0cm 57° 16°C 3.1mm 0.53kPa 6915m 2.8m/s 2.3m/s
16:00
19% 11°C 0.04mm 71% 0cm 51° 16°C 4.3mm 0.52kPa 5079m 3.3m/s 2.2m/s
17:00
17% 9.8°C 0mm 72% 0cm 43° 15°C 5.1mm 0.47kPa 17895m 3.6m/s 2.3m/s
18:00 ☾
16% 9.3°C 0.01mm 63% 0cm 34° 16°C 5.4mm 0.69kPa 24135m 1.4m/s 0.1m/s
19:00 ☾
19% 9.2°C 0mm 66% 0cm 25° 15°C 0.31mm 0.58kPa 6230m 1.1m/s 0.91m/s
20:00 ☾
21% 11°C 0mm 75% 0cm 16° 15°C 0.75mm 0.43kPa 23123m 1.5m/s 1.1m/s
21:00 ☾
24% 9.8°C 0mm 84% 0cm 7.5° 13°C 1.2mm 0.24kPa 9719m 1.7m/s 1.7m/s
22:00 ☾
22% 8.3°C 0mm 92% 0cm 0.24° 9.5°C 1.3mm 0.09kPa 24135m 1.6m/s 1.8m/s
23:00 ☾
19% 7.7°C 0mm 94% 0cm -6.7° 8.6°C 1.3mm 0.06kPa 24134m 1.3m/s 1.3m/s
Fri, Jul 10 Sunrise 05:33 Sunset 22:03
24:00 ☾
17% 7.3°C 0mm 94% 0cm -12° 8.2°C 1.3mm 0.06kPa 24135m 1.1m/s 1.2m/s
01:00 ☾
12% 6.9°C 0mm 94% 0cm -15° 7.8°C 0mm 0.07kPa 24134m 0.93m/s 1m/s
02:00 ☾
7% 6.6°C 0mm 94% 0cm -15° 7.6°C 0mm 0.06kPa 24134m 1.1m/s 1.3m/s
03:00 ☾
2% 6.4°C 0mm 94% 0cm -14° 7.3°C 0mm 0.06kPa 24135m 1.1m/s 1.3m/s
04:00 ☾
2% 6.1°C 0mm 94% 0cm -10° 7°C 0mm 0.06kPa 24134m 1.2m/s 1.3m/s
05:00 ☾
2% 5.8°C 0mm 94% 0cm -4.5° 6.7°C 0mm 0.06kPa 24134m 1.2m/s 1.4m/s
06:00
2% 5.8°C 0mm 93% 0cm 2.6° 6.9°C 0mm 0.07kPa 24134m 1.2m/s 1.4m/s
07:00
8% 7.1°C 0mm 91% 0cm 10° 8.5°C 0mm 0.1kPa 24135m 1.1m/s 1.3m/s
08:00
13% 8°C 0mm 88% 0cm 19° 9.9°C 0mm 0.14kPa 24134m 1.4m/s 1.1m/s
09:00
19% 8.3°C 0mm 83% 0cm 28° 11°C 0mm 0.22kPa 24134m 1.5m/s 1.1m/s
10:00
19% 8.3°C 0mm 72% 0cm 37° 13°C 0mm 0.42kPa 24135m 1.5m/s 0.98m/s
11:00
18% 7°C 0mm 53% 0cm 46° 16°C 0mm 0.87kPa 24135m 2.7m/s 1.5m/s
12:00
18% 5.7°C 0mm 40% 0cm 53° 20°C 0mm 1.4kPa 24135m 3.1m/s 1.2m/s
13:00
14% 8.3°C 0.02mm 53% 0cm 58° 18°C 0.19mm 0.98kPa 20854m 2.6m/s 1.4m/s
14:00
10% 10°C 0.03mm 65% 0cm 60° 17°C 0.38mm 0.66kPa 17572m 2.2m/s 1.6m/s
15:00
6% 11°C 0.05mm 78% 0cm 57° 15°C 0.56mm 0.39kPa 14291m 1.7m/s 1.9m/s
16:00
6% 11°C 0.05mm 83% 0cm 51° 14°C 0.69mm 0.27kPa 17572m 1.9m/s 1.9m/s
17:00
7% 10°C 0.04mm 88% 0cm 43° 12°C 0.81mm 0.17kPa 20854m 2.1m/s 1.9m/s
18:00 ☾
7% 9.3°C 0.04mm 93% 0cm 34° 10°C 0.94mm 0.08kPa 24135m 2.3m/s 1.9m/s
19:00 ☾
18% 9.1°C 0.03mm 95% 0cm 25° 9.9°C 0.63mm 0.07kPa 24135m 1.9m/s 1.6m/s
20:00 ☾
30% 8.9°C 0.01mm 96% 0cm 16° 9.5°C 0.31mm 0.05kPa 24135m 1.5m/s 1.4m/s
21:00 ☾
41% 8.7°C 0mm 97% 0cm 7.4° 9.2°C 0mm 0.04kPa 24135m 1m/s 1.2m/s
22:00 ☾
41% 8.2°C 0mm 96% 0cm 0.16° 8.8°C 0mm 0.04kPa 24135m 1.1m/s 1.2m/s
23:00 ☾
40% 7.8°C 0mm 96% 0cm -6.8° 8.5°C 0mm 0.05kPa 24135m 1.1m/s 1.3m/s
Sat, Jul 11 Sunrise 05:34 Sunset 22:02
24:00 ☾
40% 7.3°C 0mm 95% 0cm -12° 8.1°C 0mm 0.06kPa 24135m 1.1m/s 1.3m/s
01:00 ☾
37% 8°C 0mm 86% 0cm -15° 10°C 0mm 0.18kPa 24135m 1.7m/s 1.4m/s
02:00 ☾
35% 8.4°C 0mm 77% 0cm -15° 12°C 0mm 0.33kPa 24135m 2.3m/s 1.5m/s
03:00 ☾
32% 8.6°C 0mm 68% 0cm -14° 14°C 0mm 0.53kPa 24135m 2.9m/s 1.5m/s
04:00 ☾
31% 8°C 0mm 56% 0cm -10° 17°C 0mm 0.83kPa 24135m 4.3m/s 1.7m/s
05:00 ☾
31% 6.8°C 0mm 45% 0cm -4.6° 19°C 0mm 1.2kPa 24135m 5.6m/s 1.9m/s
06:00
30% 4.5°C 0mm 33% 0cm 2.5° 21°C 0mm 1.7kPa 24135m 6.9m/s 2.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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