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Rule Fog Hunter

Revelstoke - Fog Hunter - Canadian Rockies

Revelstoke, British Columbia, 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 Spread8.9°C
Visibility24134 (Clear)
Relative Humidity54%
Wind Speed1.8m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Vancouver

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/Vancouver
Fog Probability
≥ 75.0%
Tue, Jul 7
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%
01:000%
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%
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%
20:000%
21:000%
22:000%
23:000%
Sat, Jul 11
24:000%
01:000%
02:000%
03:000%
04:000%
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/Vancouver
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 04:48 Sunset 21:06
06:00
5% 1.5°C 0mm 54% 0cm 8.8° 10°C 0mm 0.57kPa 24134m 2.2m/s 1.8m/s
07:00
9% 2.4°C 0mm 48% 0cm 18° 13°C 0mm 0.8kPa 24135m 2.5m/s 1.7m/s
08:00
13% 2.7°C 0mm 40% 0cm 27° 16°C 0mm 1.1kPa 24135m 2.8m/s 2m/s
09:00
15% 3.5°C 0mm 38% 0cm 36° 18°C 0mm 1.3kPa 24135m 2.6m/s 2m/s
10:00
16% 3.9°C 0mm 37% 0cm 45° 19°C 0mm 1.4kPa 24135m 3m/s 2.2m/s
11:00
18% 4.2°C 0mm 35% 0cm 53° 20°C 0mm 1.5kPa 24134m 3.8m/s 2.3m/s
12:00
14% 3.9°C 0mm 33% 0cm 59° 21°C 0mm 1.6kPa 24134m 4.4m/s 2.2m/s
13:00
11% 2.9°C 0mm 30% 0cm 61° 21°C 0mm 1.8kPa 24134m 4.8m/s 2.2m/s
14:00
7% 2.2°C 0mm 28% 0cm 59° 22°C 0mm 1.9kPa 24135m 5.5m/s 2.6m/s
15:00
7% 2°C 0mm 26% 0cm 53° 22°C 0mm 1.9kPa 24134m 4.9m/s 2.5m/s
16:00
7% 1.9°C 0mm 26% 0cm 45° 22°C 0mm 2kPa 24134m 4.8m/s 2.5m/s
17:00 ☾
7% 1.8°C 0mm 27% 0cm 36° 22°C 0mm 1.9kPa 24135m 5m/s 2.4m/s
18:00 ☾
18% 1.9°C 0mm 27% 0cm 26° 21°C 0mm 1.9kPa 24135m 4.3m/s 1.7m/s
19:00 ☾
28% 3.9°C 0mm 33% 0cm 17° 21°C 0mm 1.6kPa 24135m 3.3m/s 1.2m/s
20:00 ☾
39% 6.1°C 0mm 48% 0cm 8.2° 17°C 0mm 1kPa 24134m 0.9m/s 0.81m/s
21:00 ☾
33% 4.3°C 0mm 54% 0cm 0.49° 13°C 0mm 0.7kPa 24134m 0.62m/s 0.53m/s
22:00 ☾
26% 3.5°C 0mm 56% 0cm -6.8° 12°C 0mm 0.61kPa 24134m 0.4m/s 0.57m/s
23:00 ☾
20% 3.1°C 0mm 57% 0cm -12° 11°C 0mm 0.57kPa 24135m 0.61m/s 0.79m/s
Thu, Jul 9 Sunrise 04:49 Sunset 21:05
24:00 ☾
14% 2.6°C 0mm 59% 0cm -16° 10°C 0mm 0.52kPa 24135m 0.91m/s 0.88m/s
01:00 ☾
9% 2.1°C 0mm 58% 0cm -17° 9.9°C 0mm 0.51kPa 24134m 1.2m/s 1.3m/s
02:00 ☾
3% 2°C 0mm 58% 0cm -15° 9.9°C 0mm 0.51kPa 24135m 1.3m/s 1.4m/s
03:00 ☾
2% 2.3°C 0mm 60% 0cm -12° 9.6°C 0mm 0.47kPa 24134m 1.5m/s 1.7m/s
04:00 ☾
2% 2.5°C 0mm 62% 0cm -6.4° 9.4°C 0mm 0.44kPa 24135m 1.4m/s 1.6m/s
05:00
1% 2.6°C 0mm 64% 0cm 0.89° 8.9°C 0mm 0.4kPa 24135m 1.5m/s 1.6m/s
06:00
3% 3°C 0mm 65% 0cm 8.7° 9.3°C 0mm 0.41kPa 24134m 2.1m/s 1.5m/s
07:00
5% 2.7°C 0mm 56% 0cm 18° 11°C 0mm 0.59kPa 24135m 2.3m/s 1.7m/s
08:00
7% 1.7°C 0mm 47% 0cm 27° 13°C 0mm 0.79kPa 24135m 2.4m/s 1.8m/s
09:00
6% 1.5°C 0mm 40% 0cm 36° 15°C 0mm 1kPa 24134m 2.3m/s 1.8m/s
10:00
6% 2.1°C 0mm 38% 0cm 45° 16°C 0mm 1.2kPa 24135m 2.5m/s 2.1m/s
11:00
5% 3.1°C 0mm 36% 0cm 53° 18°C 0mm 1.3kPa 24135m 2.7m/s 2m/s
12:00
4% 3.5°C 0mm 35% 0cm 59° 19°C 0mm 1.5kPa 24134m 3.6m/s 2m/s
13:00
3% 3.6°C 0mm 33% 0cm 61° 21°C 0mm 1.6kPa 24135m 4.1m/s 2.1m/s
14:00
2% 3.4°C 0mm 34% 0cm 59° 19°C 0mm 1.5kPa 24135m 4m/s 2.2m/s
15:00
1% 3.7°C 0mm 37% 0cm 53° 19°C 0mm 1.4kPa 24135m 3.8m/s 2m/s
16:00
1% 4.3°C 0mm 39% 0cm 45° 18°C 0mm 1.3kPa 24135m 2.8m/s 1.8m/s
17:00 ☾
0% 4.5°C 0mm 39% 0cm 36° 19°C 0mm 1.3kPa 24135m 2.5m/s 1.2m/s
18:00 ☾
3% 5°C 0mm 42% 0cm 26° 18°C 0mm 1.2kPa 24135m 1.3m/s 0.89m/s
19:00 ☾
6% 5.8°C 0mm 44% 0cm 17° 18°C 0mm 1.2kPa 24135m 1.2m/s 0.78m/s
20:00 ☾
9% 6.6°C 0mm 53% 0cm 8.1° 16°C 0mm 0.88kPa 24134m 0.74m/s 0.71m/s
21:00 ☾
8% 5.6°C 0mm 58% 0cm 0.42° 14°C 0mm 0.64kPa 24135m 0.8m/s 0.7m/s
22:00 ☾
8% 5.1°C 0mm 68% 0cm -6.9° 11°C 0mm 0.42kPa 24134m 0.63m/s 0.45m/s
23:00 ☾
7% 4.9°C 0mm 72% 0cm -12° 9.7°C 0mm 0.33kPa 24135m 0.53m/s 0.35m/s
Fri, Jul 10 Sunrise 04:50 Sunset 21:04
24:00 ☾
11% 4.8°C 0mm 74% 0cm -16° 9.2°C 0mm 0.31kPa 24134m 0.53m/s 0.32m/s
01:00 ☾
15% 4.6°C 0mm 76% 0cm -17° 8.7°C 0mm 0.27kPa 24134m 0.41m/s 0.03m/s
02:00 ☾
19% 4.6°C 0mm 76% 0cm -16° 8.7°C 0mm 0.27kPa 24135m 0.41m/s 0.47m/s
03:00 ☾
17% 4.5°C 0mm 75% 0cm -12° 8.7°C 0mm 0.28kPa 24134m 0.7m/s 0.7m/s
04:00 ☾
16% 4.2°C 0mm 77% 0cm -6.6° 8°C 0mm 0.24kPa 24134m 0.6m/s 0.68m/s
05:00
14% 3.9°C 0mm 79% 0cm 0.79° 7.4°C 0mm 0.22kPa 24134m 0.62m/s 0.62m/s
06:00
18% 4.4°C 0mm 72% 0cm 8.6° 9.1°C 0mm 0.32kPa 24135m 0.44m/s 0.48m/s
07:00
23% 4.8°C 0mm 63% 0cm 17° 12°C 0mm 0.51kPa 24134m 1.2m/s 0.78m/s
08:00
27% 5.2°C 0mm 55% 0cm 27° 14°C 0mm 0.74kPa 24134m 1.7m/s 1m/s
09:00
27% 5.6°C 0mm 47% 0cm 36° 17°C 0mm 1kPa 24135m 2m/s 1.1m/s
10:00
27% 5.6°C 0mm 42% 0cm 45° 19°C 0mm 1.3kPa 24135m 2.1m/s 1.3m/s
11:00
27% 5.3°C 0mm 39% 0cm 53° 20°C 0mm 1.4kPa 24135m 3.7m/s 1.8m/s
12:00
22% 7.1°C 0.003mm 50% 0cm 59° 18°C 0.08mm 1kPa 24135m 2.8m/s 1.5m/s
13:00
16% 8.1°C 0.007mm 60% 0cm 61° 16°C 0.17mm 0.71kPa 24135m 1.8m/s 1.2m/s
14:00
11% 8.7°C 0.01mm 71% 0cm 59° 14°C 0.25mm 0.46kPa 24135m 0.91m/s 0.9m/s
15:00
9% 7.9°C 0.007mm 75% 0cm 53° 12°C 0.25mm 0.36kPa 24135m 1m/s 1.1m/s
16:00
6% 7.1°C 0.003mm 78% 0cm 45° 11°C 0.25mm 0.28kPa 24135m 1.1m/s 1.3m/s
17:00 ☾
4% 6.3°C 0mm 82% 0cm 36° 9.3°C 0.25mm 0.22kPa 24135m 1.2m/s 1.4m/s
18:00 ☾
3% 6.4°C 0.01mm 83% 0cm 26° 9.1°C 0.21mm 0.19kPa 24135m 1.1m/s 1.3m/s
19:00 ☾
3% 6.6°C 0.03mm 85% 0cm 17° 8.9°C 0.17mm 0.17kPa 24135m 1m/s 1.2m/s
20:00 ☾
2% 6.7°C 0.04mm 87% 0cm 8° 8.8°C 0.13mm 0.15kPa 24135m 0.94m/s 1m/s
21:00 ☾
2% 7.2°C 0.03mm 89% 0cm 0.34° 9°C 0.29mm 0.13kPa 18670m 0.66m/s 0.76m/s
22:00 ☾
3% 7.8°C 0.01mm 90% 0cm -7° 9.3°C 0.46mm 0.11kPa 13205m 0.39m/s 0.48m/s
23:00 ☾
3% 8.3°C 0mm 92% 0cm -12° 9.5°C 0.63mm 0.09kPa 7741m 0.12m/s 0.19m/s
Sat, Jul 11 Sunrise 04:51 Sunset 21:04
24:00 ☾
4% 8.7°C 0.01mm 93% 0cm -16° 9.8°C 0.71mm 0.09kPa 12968m 0.36m/s 0.37m/s
01:00 ☾
5% 9.1°C 0.02mm 93% 0cm -17° 10°C 0.79mm 0.08kPa 18196m 0.59m/s 0.54m/s
02:00 ☾
6% 9.5°C 0.03mm 94% 0cm -16° 10°C 0.88mm 0.08kPa 23424m 0.83m/s 0.71m/s
03:00 ☾
7% 9.7°C 0.07mm 85% 0cm -12° 12°C 1.5mm 0.2kPa 22459m 1.8m/s 1.3m/s
04:00 ☾
7% 9.8°C 0.12mm 77% 0cm -6.7° 14°C 2mm 0.36kPa 21494m 2.8m/s 1.9m/s
05:00
8% 9.7°C 0.16mm 69% 0cm 0.68° 15°C 2.6mm 0.54kPa 20529m 3.7m/s 2.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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