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Rule Fog Hunter

Balmaha - Fog Hunter - Trossachs & Loch Lomond

Balmaha, Scotland, United Kingdom

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 · ≥ 60.0%

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 Spread1.5°C
Visibility24135 (Clear)
Relative Humidity90%
Wind Speed5.8m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

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 identifies when fog and mist conditions create atmospheric photography opportunities across the Trossachs lochs and glens. We track temperature, humidity, wind, and overnight cooling to predict when dawn mist will form over forest-fringed lochs and settle into wooded valleys.

The Trossachs—"the Highlands in miniature"—sits where Lowland Scotland meets the Highlands, creating perfect conditions for mist formation. Cool Highland air draining down valleys meets warmer air over the lochs, while dense oak and birch forests trap moisture overnight. The result is frequent dawn mist that transforms intimate lochs and wooded glens into scenes of ethereal beauty.

What makes the Trossachs special for fog photography:

  • Forest-fringed lochs - Loch Ard and Loch Chon with native woodland creating layered mist scenes
  • Valley fog formation - Glen Finglas and other glens trap overnight mist between mountains
  • Intimate scale - Smaller lochs allow compositions that capture both mist and reflections
  • Seasonal reliability - Autumn (September-November) brings most reliable mist conditions with calm nights

Loch Ard near Aberfoyle offers the Trossachs' most reliable dawn mist—native forest comes right to the water's edge, creating layered compositions as mist rises through trees. The forest pier at dawn with mist swirling around ancient oaks is magical. Loch Chon, deeper into the forest, sees even more atmospheric conditions due to its remote, sheltered position. The Trossachs Pier on Loch Katrine with the historic steamship and Ben Venue emerging from mist creates classic Scottish landscape scenes. Timing is critical—arrive in darkness, position yourself 30 minutes before sunrise, and capture the 1-2 hour window as mist lifts and breaks. Conditions change rapidly once sun hits the water.

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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
Europe/London
Fog Probability
≥ 60.0%
Wed, Apr 15
03:000%
04:000%
05:000%
06:000%
07:000%
08:0042%
09:0016%
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, Apr 16
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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23:000%
Fri, Apr 17
24:0016%
01:000%
02:0013%
03:000%
04:000%
05:000%
06:000%
07:000%
08:0014%
09:000%
10:000%
11:000%
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Sat, Apr 18
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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18:000%
19:0043%
20:0043%
21:0043%
22:0050%
23:0057%
Sun, Apr 19
24:0057%
01:0057%
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
Europe/London
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
Thu, Apr 16 Sunrise 06:10 Sunset 20:26
03:00 ☾
0% 5.5°C 0.04mm 90% 0cm -21° 7°C 0.56mm 0.1kPa 24135m 11m/s 5.8m/s
04:00 ☾
0% 5.5°C 0.26mm 93% 0cm -16° 6.6°C 0.63mm 0.07kPa 24135m 11m/s 5.9m/s
05:00 ☾
0% 5.7°C 0.02mm 95% 0cm -9.5° 6.5°C 1.2mm 0.05kPa 24134m 9.9m/s 5m/s
06:00 ☾
0% 5.3°C 0mm 91% 0cm -2° 6.7°C 1.3mm 0.09kPa 24135m 11m/s 5m/s
07:00
0% 5.3°C 0mm 89% 0cm 6.1° 6.9°C 1.4mm 0.11kPa 22299m 11m/s 6.1m/s
08:00
0% 5.3°C 0mm 88% 0cm 14° 7.1°C 0.06mm 0.12kPa 24134m 11m/s 6.6m/s
09:00
0% 5.1°C 0mm 86% 0cm 23° 7.3°C 0.13mm 0.14kPa 24135m 11m/s 6.2m/s
10:00
0% 5.2°C 0mm 83% 0cm 30° 7.8°C 0.13mm 0.18kPa 24134m 11m/s 5.9m/s
11:00
0% 5.8°C 0mm 81% 0cm 37° 9°C 0.19mm 0.22kPa 24134m 10m/s 6.1m/s
12:00
0% 5.5°C 0mm 73% 0cm 42° 10°C 0.25mm 0.34kPa 24135m 10m/s 7.2m/s
13:00
0% 4.9°C 0mm 68% 0cm 44° 11°C 0.31mm 0.4kPa 24135m 9.1m/s 6.9m/s
14:00
8% 4.8°C 0mm 66% 0cm 43° 11°C 0mm 0.45kPa 24134m 8.4m/s 6.2m/s
15:00
15% 4.9°C 0mm 67% 0cm 40° 11°C 0.06mm 0.43kPa 24135m 7.7m/s 5.7m/s
16:00
23% 5.2°C 0mm 68% 0cm 34° 11°C 0.06mm 0.41kPa 24134m 7.8m/s 6.4m/s
17:00
15% 6.1°C 0mm 74% 0cm 27° 11°C 0.19mm 0.34kPa 24134m 8.4m/s 5.8m/s
18:00
8% 6.7°C 0mm 79% 0cm 19° 10°C 0.25mm 0.27kPa 24134m 8.9m/s 5.5m/s
19:00
0% 6.3°C 0mm 81% 0cm 11° 9.4°C 0.38mm 0.23kPa 24135m 9.5m/s 5.2m/s
20:00
0% 5.8°C 0.02mm 83% 0cm 3° 8.5°C 0.13mm 0.19kPa 24134m 10m/s 5.4m/s
21:00 ☾
0% 5.8°C 0.16mm 88% 0cm -5° 7.7°C 0.19mm 0.13kPa 23447m 9.4m/s 3m/s
22:00 ☾
0% 6.2°C 0.05mm 90% 0cm -12° 7.9°C 0.38mm 0.11kPa 24134m 10m/s 2.9m/s
23:00 ☾
0% 6.8°C 0.13mm 92% 0cm -18° 8.1°C 0.56mm 0.09kPa 24134m 9.9m/s 3.4m/s
Fri, Apr 17 Sunrise 06:10 Sunset 20:26
24:00 ☾
0% 7°C 0.31mm 94% 0cm -22° 7.9°C 0.81mm 0.07kPa 20109m 11m/s 3.3m/s
01:00 ☾
0% 7.3°C 0.32mm 95% 0cm -23° 8.1°C 1.3mm 0.05kPa 20508m 11m/s 4.1m/s
02:00 ☾
0% 7.4°C 0.22mm 94% 0cm -23° 8.3°C 0.31mm 0.06kPa 23217m 12m/s 4.3m/s
03:00 ☾
0% 7.3°C 0.27mm 93% 0cm -20° 8.4°C 0.63mm 0.08kPa 20784m 11m/s 4.1m/s
04:00 ☾
0% 7.4°C 0.03mm 92% 0cm -15° 8.6°C 0.81mm 0.09kPa 24135m 11m/s 3.9m/s
05:00 ☾
0% 7.2°C 0.01mm 92% 0cm -9.2° 8.5°C 0.88mm 0.09kPa 24134m 11m/s 4m/s
06:00 ☾
0% 7°C 0.05mm 91% 0cm -1.6° 8.4°C 0.94mm 0.1kPa 24135m 12m/s 3.8m/s
07:00
0% 7.3°C 0.5mm 93% 0cm 6.4° 8.3°C 1.3mm 0.07kPa 16961m 12m/s 3.7m/s
08:00
0% 7.4°C 0.68mm 94% 0cm 15° 8.4°C 0.75mm 0.07kPa 14276m 13m/s 4.3m/s
09:00
0% 7.4°C 1.1mm 93% 0cm 23° 8.6°C 1.4mm 0.08kPa 10805m 14m/s 4.7m/s
10:00
0% 7.6°C 0.1mm 92% 0cm 31° 8.9°C 1.8mm 0.09kPa 17383m 13m/s 5.7m/s
11:00
0% 7.9°C 0mm 88% 0cm 37° 9.7°C 2.3mm 0.14kPa 12129m 12m/s 7.3m/s
12:00
0% 8.4°C 0mm 88% 0cm 42° 10°C 3mm 0.16kPa 13218m 12m/s 7.7m/s
13:00
0% 8.3°C 0mm 81% 0cm 44° 11°C 3.4mm 0.25kPa 17544m 13m/s 8.2m/s
14:00
1% 8.3°C 0mm 80% 0cm 44° 12°C 0.38mm 0.27kPa 18949m 14m/s 8.6m/s
15:00
3% 8.2°C 0mm 79% 0cm 40° 12°C 0.69mm 0.29kPa 19105m 14m/s 8.4m/s
16:00
4% 8.2°C 0mm 78% 0cm 35° 12°C 1mm 0.3kPa 24135m 14m/s 8.3m/s
17:00
3% 7.6°C 0mm 79% 0cm 28° 11°C 1.3mm 0.28kPa 23791m 14m/s 8.3m/s
18:00
2% 7.6°C 0mm 82% 0cm 20° 11°C 1.6mm 0.24kPa 18870m 13m/s 8m/s
19:00
1% 7.3°C 0mm 86% 0cm 11° 9.6°C 1.8mm 0.17kPa 21839m 12m/s 7.2m/s
20:00
4% 6.8°C 0mm 88% 0cm 3.3° 8.6°C 0.44mm 0.13kPa 15031m 12m/s 6m/s
21:00 ☾
6% 6.8°C 0mm 92% 0cm -4.7° 8°C 0.75mm 0.08kPa 22039m 11m/s 4.5m/s
22:00 ☾
9% 6.6°C 0.01mm 90% 0cm -12° 8.3°C 1.1mm 0.11kPa 16048m 12m/s 6.3m/s
23:00 ☾
10% 6.3°C 0mm 88% 0cm -17° 8.1°C 1.6mm 0.12kPa 24135m 12m/s 6.6m/s
Sat, Apr 18 Sunrise 06:07 Sunset 20:28
24:00 ☾
12% 5.7°C 0mm 91% 0cm -21° 7.1°C 1.6mm 0.09kPa 24134m 12m/s 5.8m/s
01:00 ☾
13% 5.6°C 0mm 92% 0cm -23° 6.8°C 1.7mm 0.08kPa 24134m 12m/s 5.8m/s
02:00 ☾
13% 5.4°C 0mm 92% 0cm -23° 6.5°C 0.06mm 0.07kPa 24135m 12m/s 5.8m/s
03:00 ☾
14% 5.3°C 0mm 93% 0cm -20° 6.4°C 0.06mm 0.07kPa 24135m 12m/s 5.6m/s
04:00 ☾
14% 5.6°C 0mm 92% 0cm -15° 6.8°C 0.06mm 0.08kPa 24134m 12m/s 5.7m/s
05:00 ☾
10% 5.6°C 0.01mm 91% 0cm -8.8° 6.9°C 0.13mm 0.09kPa 24134m 11m/s 5.9m/s
06:00 ☾
5% 5.9°C 0.02mm 92% 0cm -1.3° 7°C 0.19mm 0.08kPa 24135m 11m/s 5.5m/s
07:00
1% 5.9°C 0.04mm 90% 0cm 6.7° 7.4°C 0.31mm 0.11kPa 24134m 11m/s 5.3m/s
08:00
3% 5.8°C 0.01mm 88% 0cm 15° 7.7°C 0.13mm 0.13kPa 24135m 13m/s 6.5m/s
09:00
4% 5.3°C 0.08mm 84% 0cm 23° 7.8°C 0.25mm 0.17kPa 24134m 13m/s 6.9m/s
10:00
6% 5.4°C 0mm 87% 0cm 31° 7.5°C 0.31mm 0.14kPa 24134m 10m/s 5m/s
11:00
6% 5.2°C 0mm 77% 0cm 38° 9°C 0.38mm 0.27kPa 24134m 11m/s 6.6m/s
12:00
6% 4.6°C 0mm 70% 0cm 42° 9.9°C 0.56mm 0.37kPa 24135m 10m/s 6.8m/s
13:00
6% 4.3°C 0mm 68% 0cm 45° 10°C 0.69mm 0.4kPa 21957m 10m/s 6.8m/s
14:00
12% 3.7°C 0mm 75% 0cm 44° 7.9°C 0.46mm 0.27kPa 22683m 7.3m/s 5.2m/s
15:00
18% 3°C 0mm 82% 0cm 41° 5.8°C 0.23mm 0.17kPa 23409m 4.5m/s 3.5m/s
16:00
24% 2.2°C 0mm 89% 0cm 35° 3.8°C 0mm 0.08kPa 24135m 1.7m/s 1.9m/s
17:00
24% 2.1°C 0mm 91% 0cm 28° 3.5°C 0mm 0.07kPa 24135m 1.6m/s 1.8m/s
18:00
25% 2.1°C 0mm 92% 0cm 20° 3.2°C 0mm 0.06kPa 24135m 1.5m/s 1.7m/s
19:00
25% 2°C 0mm 94% 0cm 12° 2.9°C 0mm 0.04kPa 24135m 1.4m/s 1.5m/s
20:00
39% 1.8°C 0mm 94% 0cm 3.5° 2.7°C 0mm 0.04kPa 24135m 1.4m/s 1.5m/s
21:00 ☾
53% 1.7°C 0mm 95% 0cm -4.4° 2.5°C 0mm 0.04kPa 24135m 1.3m/s 1.4m/s
22:00 ☾
67% 1.6°C 0mm 95% 0cm -11° 2.3°C 0mm 0.04kPa 24135m 1.3m/s 1.3m/s
23:00 ☾
67% 1.7°C 0mm 95% 0cm -17° 2.4°C 0mm 0.04kPa 24135m 1.3m/s 1.3m/s
Sun, Apr 19 Sunrise 06:05 Sunset 20:30
24:00 ☾
68% 1.8°C 0mm 95% 0cm -21° 2.5°C 0mm 0.04kPa 24135m 1.2m/s 1.3m/s
01:00 ☾
68% 2°C 0mm 95% 0cm -23° 2.6°C 0mm 0.03kPa 24135m 1.2m/s 1.3m/s
02:00 ☾
68% 2.7°C 0mm 87% 0cm -22° 4.7°C 0mm 0.11kPa 24135m 1.4m/s 1.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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