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Rule Fog Hunter

Malham Cove - Fog Hunter - Yorkshire Dales

Malham, England, United Kingdom

Thick, moody fog for atmospheric forest and landscape shots

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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
Dewpoint Spread3.9°C
Visibility24134 (Clear)
Relative Humidity77%
Wind Speed12.3m/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 predicts when temperature inversions and fog conditions create atmospheric valley scenes in the Yorkshire Dales. We track overnight cooling, humidity, wind speed, and topography to identify when fog fills limestone valleys while peaks emerge above.

The Yorkshire Dales' distinctive U-shaped valleys carved by glaciers create natural bowls that trap cold air and fog, while high ground like Pen-y-ghent and Ingleborough rises above the mist layer. The combination of limestone formations, ancient stone walls, and historic barns emerging from fog creates quintessentially northern English scenes.

What makes Yorkshire Dales fog photography special:

  • Valley inversions - Deep dales fill with fog while peaks and high pastures stay clear in sunshine
  • Limestone drama - Malham Cove's 260-foot cliff and limestone pavement emerge from dawn mist
  • Stone-wall patterns - Traditional dry-stone walls create geometric patterns disappearing into fog
  • Historic structures - Ribblehead Viaduct's 24 arches pierce fog layers like a Victorian ghost ship

Malham Cove becomes magical when fog pools in the valley below its curved limestone amphitheater—arrive before dawn to capture the cliffs emerging as mist burns off. Ribblehead Viaduct crossing fog-filled valleys creates iconic compositions, especially with early light. From Pen-y-ghent summit, fog inversions reveal only the highest peaks above a sea of white. The limestone pavements near Malham and Ingleborough become otherworldly when patches of fog drift through their geometric patterns. Best conditions occur on clear, calm autumn and winter nights when valley temperatures drop rapidly. Winter fog can persist all day in sheltered valleys, providing extended shooting windows.

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72-hour requirements breakdown

What passed or failed, hour by hour
1matching hours in the next 85 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 60.0%
Sat, Apr 4
06:0043%
07:0043%
08:0063%
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%
Sun, Apr 5
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, Apr 6
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, Apr 7
24:000%
01:0039%
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%
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16:000%
17:000%
18:000%
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
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
Sat, Apr 4 Sunrise 06:34 Sunset 19:49
20:00
0% 5°C 0mm 77% 0cm -2.1° 8.9°C 0mm 0.26kPa 24134m 22m/s 12m/s
21:00
0% 6°C 0.1mm 84% 0cm -10° 8.5°C 0.13mm 0.18kPa 24135m 25m/s 11m/s
22:00
0% 7°C 3.7mm 92% 0cm -18° 8.2°C 2.8mm 0.08kPa 4718m 22m/s 12m/s
23:00
0% 2.8°C 0mm 81% 0cm -24° 5.9°C 3.3mm 0.18kPa 24134m 23m/s 13m/s
Sun, Apr 5 Sunrise 06:34 Sunset 19:49
24:00
0% 2.2°C 0mm 82% 0cm -28° 5°C 3.4mm 0.16kPa 24135m 22m/s 11m/s
01:00
0% 3.1°C 0.42mm 85% 0cm -30° 5.4°C 3.6mm 0.13kPa 17206m 23m/s 14m/s
02:00
2% 3.4°C 0mm 89% 0cm -29° 5.1°C 0.38mm 0.1kPa 12874m 21m/s 14m/s
03:00
3% 1.1°C 0mm 88% 0cm -26° 3°C 0.5mm 0.09kPa 20872m 21m/s 13m/s
04:00
5% 0°C 0mm 82% 0.03cm -20° 2.8°C 0.5mm 0.13kPa 15266m 21m/s 13m/s
05:00
5% -0.1°C 0mm 82% 0.04cm -13° 2.7°C 0.56mm 0.14kPa 24134m 18m/s 11m/s
06:00
4% -0.3°C 0mm 84% 0.05cm -5.3° 2.2°C 0.56mm 0.12kPa 24135m 14m/s 8.7m/s
07:00
4% -0.2°C 0mm 84% 0.06cm 3.5° 2.2°C 0.63mm 0.11kPa 24135m 13m/s 7.3m/s
08:00
14% 0.4°C 0mm 82% 0.07cm 12° 3.1°C 0.06mm 0.13kPa 24134m 12m/s 7.5m/s
09:00
24% 1.5°C 0.94mm 89% 1.1cm 21° 3.2°C 0.5mm 0.08kPa 4621m 11m/s 8m/s
10:00
34% 2.7°C 0.32mm 97% 0cm 29° 3.1°C 1.9mm 0.02kPa 204m 13m/s 8m/s
11:00
35% 1.1°C 0mm 86% 0.3cm 35° 3.2°C 2.3mm 0.11kPa 12282m 14m/s 9.7m/s
12:00
35% 1.6°C 0mm 80% 0.49cm 40° 4.6°C 2.6mm 0.17kPa 13256m 15m/s 10m/s
13:00
36% 0.9°C 0mm 75% 0.32cm 42° 5°C 3mm 0.22kPa 18374m 15m/s 10m/s
14:00
43% 0.9°C 0mm 74% 0.3cm 41° 5.1°C 0.31mm 0.23kPa 18021m 15m/s 11m/s
15:00
51% 0.9°C 0mm 74% 0.16cm 37° 5.1°C 0.56mm 0.23kPa 23997m 15m/s 11m/s
16:00
58% 0.6°C 0mm 73% 0.08cm 31° 5.1°C 0.69mm 0.24kPa 24135m 15m/s 10m/s
17:00
43% 0.4°C 0.01mm 73% 0.1cm 24° 4.9°C 0.75mm 0.24kPa 24135m 14m/s 9.6m/s
18:00
28% 0.1°C 0mm 75% 0.05cm 16° 4.1°C 0.81mm 0.2kPa 24134m 14m/s 8.7m/s
19:00
13% -0.1°C 0mm 77% 0cm 6.9° 3.5°C 0.81mm 0.18kPa 24135m 12m/s 7m/s
20:00
10% -0.7°C 0mm 80% 0cm -1.8° 2.4°C 0mm 0.14kPa 24135m 11m/s 4.7m/s
21:00
7% -1°C 0mm 86% 0cm -10° 1.1°C 0mm 0.09kPa 24135m 4.8m/s 2.6m/s
22:00
4% -1.4°C 0mm 89% 0cm -18° 0.26°C 0mm 0.07kPa 24134m 1.8m/s 1.8m/s
23:00
4% -1.5°C 0mm 89% 0cm -24° 0.13°C 0mm 0.07kPa 24134m 1.4m/s 1.5m/s
Mon, Apr 6 Sunrise 06:32 Sunset 19:51
24:00
5% -1.4°C 0mm 90% 0cm -28° -0.05°C 0mm 0.06kPa 24134m 1.6m/s 1.7m/s
01:00
5% -1.4°C 0mm 90% 0cm -30° -0.05°C 0mm 0.06kPa 24134m 1.5m/s 1.6m/s
02:00
11% -1.4°C 0mm 90% 0cm -29° -0.04°C 0mm 0.06kPa 24135m 1.4m/s 1.5m/s
03:00
18% -1.4°C 0mm 91% 0cm -25° -0.01°C 0mm 0.06kPa 24134m 1.4m/s 1.5m/s
04:00
24% -1.5°C 0mm 90% 0cm -20° -0.13°C 0mm 0.06kPa 24135m 1.4m/s 1.5m/s
05:00
17% -1.6°C 0mm 90% 0cm -13° -0.16°C 0mm 0.06kPa 24134m 1.2m/s 1.3m/s
06:00
11% -1.5°C 0mm 90% 0cm -4.9° -0.05°C 0mm 0.06kPa 24134m 1.4m/s 1.5m/s
07:00
4% -1°C 0mm 87% 0cm 3.8° 0.92°C 0mm 0.08kPa 24135m 1.8m/s 1.8m/s
08:00
6% -0.2°C 0mm 83% 0cm 12° 2.3°C 0mm 0.12kPa 24134m 2.2m/s 1.6m/s
09:00
7% 0.2°C 0mm 76% 0cm 21° 4°C 0mm 0.19kPa 24135m 5.6m/s 1.9m/s
10:00
9% 0.2°C 0mm 67% 0cm 29° 5.8°C 0mm 0.3kPa 24135m 6.9m/s 3.5m/s
11:00
9% 0.1°C 0mm 60% 0cm 36° 7.3°C 0mm 0.41kPa 24135m 6.6m/s 4.4m/s
12:00
8% 1.1°C 0mm 60% 0cm 40° 8.4°C 0mm 0.44kPa 24135m 6.9m/s 5.1m/s
13:00
8% 2.2°C 0mm 62% 0cm 42° 9.2°C 0mm 0.45kPa 24134m 7.2m/s 5.6m/s
14:00
17% 2.9°C 0mm 61% 0cm 42° 10°C 0mm 0.47kPa 24134m 7.3m/s 5.6m/s
15:00
26% 4°C 0mm 64% 0cm 38° 11°C 0mm 0.47kPa 24134m 7.4m/s 5.8m/s
16:00
35% 4.8°C 0mm 69% 0cm 32° 10°C 0mm 0.38kPa 24135m 7.6m/s 6m/s
17:00
29% 5.9°C 0mm 77% 0cm 24° 9.7°C 0mm 0.28kPa 24134m 7.3m/s 4.5m/s
18:00
23% 5.9°C 0mm 79% 0cm 16° 9.4°C 0mm 0.25kPa 24134m 7.8m/s 3.8m/s
19:00
17% 5.6°C 0mm 84% 0cm 7.1° 8.2°C 0mm 0.18kPa 24135m 4.2m/s 2.5m/s
20:00
19% 5°C 0mm 89% 0cm -1.5° 6.7°C 0mm 0.11kPa 24134m 4.2m/s 2.7m/s
21:00
20% 4.5°C 0mm 91% 0cm -9.9° 5.8°C 0mm 0.08kPa 24134m 5.1m/s 2.8m/s
22:00
22% 4°C 0mm 92% 0cm -17° 5.3°C 0mm 0.07kPa 24135m 3.1m/s 2.6m/s
23:00
26% 3.8°C 0mm 92% 0cm -23° 5°C 0mm 0.07kPa 24134m 2.4m/s 2.6m/s
Tue, Apr 7 Sunrise 06:29 Sunset 19:53
24:00
29% 3.6°C 0mm 93% 0cm -27° 4.7°C 0mm 0.06kPa 24134m 2.4m/s 2.6m/s
01:00
33% 3.5°C 0mm 93% 0cm -29° 4.5°C 0mm 0.06kPa 24135m 2.5m/s 2.7m/s
02:00
53% 3.6°C 0mm 86% 0cm -28° 5.8°C 0mm 0.13kPa 24135m 5m/s 3.3m/s
03:00
74% 3.5°C 0mm 78% 0cm -25° 7.1°C 0mm 0.22kPa 24135m 7.6m/s 4m/s
04:00
94% 3.3°C 0mm 70% 0cm -20° 8.4°C 0mm 0.32kPa 24135m 10m/s 4.6m/s
05:00
94% 4°C 0mm 66% 0cm -13° 10°C 0mm 0.41kPa 24135m 10m/s 5.5m/s
06:00
94% 4.6°C 0mm 62% 0cm -4.6° 12°C 0mm 0.52kPa 24135m 10m/s 6.3m/s
07:00
94% 5°C 0mm 58% 0cm 4.2° 13°C 0mm 0.64kPa 24135m 10m/s 7.1m/s
08:00
82% 5.8°C 0mm 59% 0cm 13° 14°C 0mm 0.65kPa 24135m 11m/s 7m/s
09:00
71% 6.6°C 0mm 60% 0cm 21° 14°C 0mm 0.66kPa 24135m 11m/s 7m/s
10:00
59% 7.4°C 0mm 60% 0cm 29° 15°C 0mm 0.67kPa 24135m 11m/s 6.9m/s
11:00
55% 7.5°C 0mm 65% 0cm 36° 14°C 0mm 0.56kPa 24135m 10m/s 6m/s
12:00
50% 7.6°C 0mm 69% 0cm 41° 13°C 0mm 0.46kPa 24135m 9.3m/s 5.2m/s
13:00
46% 7.5°C 0mm 74% 0cm 43° 12°C 0mm 0.37kPa 24135m 8.3m/s 4.3m/s
14:00
42% 7.2°C 0mm 79% 0cm 42° 11°C 0mm 0.27kPa 24135m 6.4m/s 3.7m/s
15:00
37% 6.9°C 0mm 85% 0cm 38° 9.3°C 0mm 0.18kPa 24135m 4.5m/s 3.2m/s
16:00
33% 6.4°C 0mm 90% 0cm 32° 7.9°C 0mm 0.1kPa 24135m 2.6m/s 2.6m/s
17:00
27% 6°C 0mm 90% 0cm 24° 7.5°C 0mm 0.1kPa 24135m 2.6m/s 2.5m/s
18:00
22% 5.6°C 0mm 91% 0cm 16° 7°C 0mm 0.09kPa 24135m 2.5m/s 2.5m/s
19:00
16% 5.2°C 0mm 91% 0cm 7.4° 6.6°C 0mm 0.09kPa 24135m 2.5m/s 2.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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