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Rule Fog Hunter

Miette - Fog Hunter - Canadian Rockies

Miette, 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 Spread3.1°C
Visibility24134 (Clear)
Relative Humidity80%
Wind Speed2.3m/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 80 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%
01:0055%
02:0055%
03:0055%
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%
01:000%
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, May 21
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
Mon, May 18 Sunrise 05:47 Sunset 21:49
08:00
38% -0.8°C 0mm 80% 0cm 17° 2.3°C 0mm 0.15kPa 24134m 3m/s 2.3m/s
09:00
15% 0.1°C 0mm 73% 0cm 26° 4.5°C 0mm 0.23kPa 24134m 3m/s 2.3m/s
10:00
11% 0.3°C 0mm 65% 0cm 35° 6.3°C 0mm 0.33kPa 24134m 2.8m/s 2.2m/s
11:00
7% 0°C 0mm 58% 0cm 43° 7.8°C 0mm 0.45kPa 24134m 2.6m/s 1.9m/s
12:00
3% -0.6°C 0mm 50% 0cm 51° 9.2°C 0.06mm 0.57kPa 23611m 2.8m/s 1.5m/s
13:00
2% -1.1°C 0mm 45% 0cm 55° 10°C 0.13mm 0.69kPa 23664m 2.8m/s 1.4m/s
14:00
1% -1.8°C 0mm 42% 0cm 56° 11°C 0.19mm 0.75kPa 24135m 2.5m/s 0.7m/s
15:00
0% -2.1°C 0mm 39% 0cm 54° 11°C 0.19mm 0.83kPa 24135m 2.6m/s 0.91m/s
16:00
0% -2.4°C 0mm 39% 0cm 48° 11°C 0.19mm 0.8kPa 24134m 2.9m/s 1.4m/s
17:00
0% -2.6°C 0mm 39% 0cm 40° 11°C 0.19mm 0.8kPa 24134m 3.1m/s 1.3m/s
18:00 ☾
0% -2.1°C 0mm 41% 0cm 32° 10°C 0.19mm 0.75kPa 24134m 2.7m/s 1.4m/s
19:00 ☾
0% -0.7°C 0mm 50% 0cm 23° 9.2°C 0.06mm 0.59kPa 23333m 2.7m/s 1.3m/s
20:00 ☾
0% 1.5°C 0mm 63% 0cm 14° 8.1°C 0.13mm 0.4kPa 24134m 1.1m/s 1m/s
21:00 ☾
0% 1.5°C 0mm 71% 0cm 5.7° 6.3°C 0.19mm 0.28kPa 24134m 1.5m/s 1.8m/s
22:00 ☾
0% 1.3°C 0mm 79% 0cm -1.9° 4.6°C 0.19mm 0.18kPa 24134m 1.6m/s 2m/s
23:00 ☾
0% 1.2°C 0mm 84% 0cm -8.4° 3.6°C 0.19mm 0.12kPa 24134m 1.5m/s 1.8m/s
Tue, May 19 Sunrise 05:46 Sunset 21:51
24:00 ☾
0% 0.8°C 0mm 87% 0cm -13° 2.8°C 0.19mm 0.1kPa 24134m 1.5m/s 1.7m/s
01:00 ☾
3% 0.6°C 0mm 88% 0cm -16° 2.5°C 0mm 0.09kPa 24134m 1.5m/s 1.9m/s
02:00 ☾
6% 0.1°C 0mm 89% 0cm -17° 1.8°C 0mm 0.08kPa 24135m 1.7m/s 2.2m/s
03:00 ☾
9% 0.1°C 0mm 89% 0cm -15° 1.8°C 0mm 0.08kPa 24135m 1.8m/s 2.3m/s
04:00 ☾
7% -0.2°C 0mm 90% 0cm -12° 1.4°C 0mm 0.07kPa 24135m 1.9m/s 2.4m/s
05:00 ☾
4% -0.4°C 0mm 90% 0cm -6° 1.1°C 0mm 0.07kPa 24134m 2.5m/s 2.5m/s
06:00
2% -0.5°C 0mm 91% 0cm 1.3° 0.86°C 0mm 0.06kPa 24134m 2.5m/s 2.5m/s
07:00
1% 0.5°C 0mm 87% 0cm 9° 2.5°C 0mm 0.1kPa 24134m 2.7m/s 2.1m/s
08:00
1% 1°C 0mm 79% 0cm 18° 4.3°C 0mm 0.17kPa 24134m 2.5m/s 1.8m/s
09:00
0% 1.4°C 0mm 72% 0cm 26° 6.1°C 0mm 0.26kPa 24134m 2.6m/s 2m/s
10:00
0% 1.3°C 0mm 65% 0cm 35° 7.4°C 0mm 0.36kPa 24135m 2.9m/s 2.3m/s
11:00
0% 1.1°C 0mm 59% 0cm 44° 8.8°C 0.19mm 0.47kPa 23268m 3.6m/s 2.1m/s
12:00
0% 1.2°C 0.01mm 56% 0cm 51° 9.4°C 0.69mm 0.52kPa 13607m 3.9m/s 1.9m/s
13:00
1% 0.9°C 0.15mm 54% 0cm 55° 9.8°C 0.69mm 0.55kPa 23035m 6.4m/s 2.5m/s
14:00
2% 1.3°C 0.03mm 58% 0cm 57° 9°C 1.1mm 0.48kPa 24134m 5.7m/s 3.4m/s
15:00
3% 0.9°C 0mm 54% 0cm 54° 9.8°C 1.4mm 0.56kPa 24135m 6.1m/s 3m/s
16:00
2% 0.5°C 0mm 52% 0cm 48° 10°C 1.7mm 0.6kPa 11483m 5.2m/s 3.2m/s
17:00
2% 1.1°C 0mm 55% 0cm 41° 9.7°C 2.1mm 0.54kPa 8894m 4.1m/s 3.5m/s
18:00 ☾
1% 1°C 0.01mm 57% 0cm 32° 9.1°C 2.6mm 0.5kPa 8059m 3.4m/s 3m/s
19:00 ☾
6% 0.7°C 0mm 58% 0cm 23° 8.6°C 0.5mm 0.47kPa 9066m 2.5m/s 2m/s
20:00 ☾
11% 2°C 0mm 66% 0cm 14° 7.9°C 0.94mm 0.36kPa 15676m 1.7m/s 1.3m/s
21:00 ☾
16% 1°C 0mm 71% 0cm 5.9° 5.8°C 1.3mm 0.26kPa 13522m 1.4m/s 1.5m/s
22:00 ☾
13% 0°C 0mm 76% 0cm -1.7° 3.8°C 1.4mm 0.19kPa 24089m 1.5m/s 1.8m/s
23:00 ☾
10% -0.1°C 0mm 84% 0cm -8.2° 2.4°C 1.7mm 0.12kPa 24135m 1.7m/s 2m/s
Wed, May 20 Sunrise 05:45 Sunset 21:52
24:00 ☾
7% -0.4°C 0mm 86% 0cm -13° 1.7°C 1.9mm 0.1kPa 10720m 1.9m/s 2.1m/s
01:00 ☾
6% -0.6°C 0mm 91% 0.34cm -16° 0.65°C 0.5mm 0.06kPa 15119m 1.8m/s 2m/s
02:00 ☾
5% -0.8°C 0mm 91% 0cm -17° 0.44°C 0.81mm 0.05kPa 23891m 1.1m/s 0.95m/s
03:00 ☾
4% -1.5°C 0mm 89% 0cm -15° 0.13°C 0.88mm 0.07kPa 24135m 1.6m/s 1.8m/s
04:00 ☾
5% -2.3°C 0mm 88% 0.04cm -11° -0.63°C 0.94mm 0.07kPa 24135m 1.8m/s 2m/s
05:00 ☾
6% -2.8°C 0mm 86% 0cm -5.8° -0.83°C 0.94mm 0.08kPa 24135m 1.6m/s 1.8m/s
06:00
7% -3°C 0mm 86% 0cm 1.4° -0.85°C 0.94mm 0.08kPa 24134m 1.5m/s 1.7m/s
07:00
14% -1.7°C 0mm 80% 0cm 9.1° 1.4°C 0mm 0.14kPa 24135m 1.2m/s 0.98m/s
08:00
20% -1.5°C 0mm 71% 0.52cm 18° 3.4°C 0.06mm 0.23kPa 9495m 1.9m/s 0.65m/s
09:00
27% -1.8°C 0mm 60% 0.37cm 27° 5.2°C 0.38mm 0.35kPa 14481m 4.6m/s 2.6m/s
10:00
25% -3°C 0mm 51% 0.22cm 36° 6.3°C 0.63mm 0.47kPa 20046m 5.8m/s 3m/s
11:00
24% -4.3°C 0mm 43% 0cm 44° 7.4°C 0.75mm 0.59kPa 24135m 5.5m/s 2.8m/s
12:00
22% -4.8°C 0mm 41% 0cm 51° 7.7°C 0.75mm 0.62kPa 24134m 5.5m/s 3.5m/s
13:00
15% -2.9°C 0.007mm 50% 0cm 56° 6.8°C 0.6mm 0.5kPa 24134m 4m/s 2.6m/s
14:00
8% -1.5°C 0.01mm 59% 0cm 57° 5.9°C 0.46mm 0.38kPa 24135m 2.5m/s 1.8m/s
15:00
1% -0.4°C 0.02mm 68% 0cm 54° 5.1°C 0.31mm 0.28kPa 24135m 0.94m/s 0.96m/s
16:00
1% -0.7°C 0.01mm 72% 0cm 48° 3.8°C 0.31mm 0.22kPa 24135m 1.2m/s 1.3m/s
17:00
0% -1.1°C 0.007mm 77% 0cm 41° 2.6°C 0.31mm 0.17kPa 24135m 1.5m/s 1.6m/s
18:00 ☾
0% -1.5°C 0mm 82% 0cm 32° 1.3°C 0.31mm 0.12kPa 24135m 1.8m/s 1.9m/s
19:00 ☾
1% -1.7°C 0mm 83% 0cm 23° 0.91°C 0.21mm 0.11kPa 24135m 1.7m/s 1.8m/s
20:00 ☾
1% -1.9°C 0mm 84% 0cm 14° 0.51°C 0.1mm 0.1kPa 24135m 1.6m/s 1.8m/s
21:00 ☾
2% -2°C 0mm 86% 0cm 6.1° 0.11°C 0mm 0.09kPa 24135m 1.5m/s 1.7m/s
22:00 ☾
3% -2.2°C 0mm 86% 0cm -1.5° -0.07°C 0mm 0.09kPa 24135m 1.6m/s 1.8m/s
23:00 ☾
5% -2.3°C 0mm 86% 0cm -8° -0.24°C 0mm 0.08kPa 24135m 1.7m/s 1.9m/s
Thu, May 21 Sunrise 05:43 Sunset 21:54
24:00 ☾
6% -2.4°C 0mm 86% 0cm -13° -0.41°C 0mm 0.08kPa 24135m 1.7m/s 2m/s
01:00 ☾
24% -1.9°C 0mm 79% 0cm -16° 1.4°C 0mm 0.14kPa 24135m 1.9m/s 1.9m/s
02:00 ☾
41% -1.4°C 0mm 71% 0cm -17° 3.3°C 0mm 0.22kPa 24135m 2.1m/s 1.9m/s
03:00 ☾
59% -1.2°C 0mm 63% 0cm -15° 5.2°C 0mm 0.32kPa 24135m 2.3m/s 1.9m/s
04:00 ☾
56% -1.6°C 0mm 56% 0cm -11° 6.6°C 0mm 0.43kPa 24135m 2.4m/s 1.9m/s
05:00 ☾
53% -2.3°C 0mm 48% 0cm -5.7° 8°C 0mm 0.56kPa 24135m 2.5m/s 1.8m/s
06:00
50% -3.3°C 0mm 40% 0cm 1.6° 9.5°C 0mm 0.7kPa 24135m 2.6m/s 1.8m/s
07:00
41% -3.5°C 0mm 39% 0cm 9.3° 9.6°C 0mm 0.72kPa 24135m 3m/s 2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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