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Rule Fog Hunter

Fog Hunter Forecast for Ribblehead Viaduct, Yorkshire Dales

Ribblehead, England, United Kingdom

Twenty-four stone arches carry the railway across open moorland beneath Whernside, creating rhythm, scale and a strong horizontal.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread0.4°C
Visibility14088 (Clear)
Relative Humidity98%
Wind Speed6.2m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (95-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Yorkshire Dales. The requirements and hourly values below show how those signals apply at Ribblehead Viaduct.

Explore Fog Hunter conditions across Yorkshire Dales →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Ribblehead Viaduct during the last 365 days.

Last 30 days
13
recorded matching windows · 83% average confidence
Last 90 days
43
recorded matching windows · 67% average confidence
Last 365 days
59
recorded matching windows · 69% average confidence
Most frequent recorded start hour

04:00 local time, shared by 8 of 59 matches recorded in the last 365 days.

Most represented month

July, with 22 of 59 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

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
≥ 75.0%
Sun, Sep 6
23:000%
Mon, Sep 7
24:000%
01:000%
02:000%
03:000%
04:0069%
05:000%
06:0040%
07:0023%
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, Sep 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%
Wed, Sep 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%
Thu, Sep 10
24:000%
01:000%
02:0055%
03:0048%
04:0055%
05:0048%
06:0055%
07:0055%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:0015%
17:000%
18:000%
19:000%
20:000%
21:000%
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
Mon, Sep 7 Sunrise 06:28 Sunset 19:45
23:00 ☾
0% 9.2°C 0.35mm 98% 0cm -24° 9.6°C 9.9mm 0.03kPa 14088m 11m/s 6.2m/s
Tue, Sep 8 Sunrise 06:28 Sunset 19:45
24:00 ☾
0% 8.7°C 0.71mm 98% 0cm -28° 9.1°C 11mm 0.03kPa 13762m 12m/s 6.6m/s
01:00 ☾
0% 8.7°C 0.22mm 98% 0cm -30° 9°C 11mm 0.02kPa 570m 13m/s 7.2m/s
02:00 ☾
0% 8.4°C 0.01mm 98% 0cm -29° 8.8°C 0.13mm 0.03kPa 17595m 13m/s 7.8m/s
03:00 ☾
1% 8.2°C 0mm 96% 0cm -26° 8.8°C 0.19mm 0.05kPa 24135m 14m/s 7.9m/s
04:00 ☾
1% 8°C 0mm 95% 0cm -20° 8.8°C 0.25mm 0.06kPa 24135m 14m/s 8.3m/s
05:00 ☾
1% 7.8°C 0mm 95% 0cm -13° 8.5°C 0.31mm 0.06kPa 24135m 14m/s 7.5m/s
06:00 ☾
0% 7.6°C 0mm 94% 0cm -5° 8.5°C 0.38mm 0.07kPa 24134m 13m/s 7.3m/s
07:00
0% 7.5°C 0mm 95% 0cm 3.7° 8.3°C 0.5mm 0.06kPa 24134m 13m/s 6.8m/s
08:00
1% 8.2°C 0mm 94% 0cm 12° 9.1°C 0.19mm 0.06kPa 21137m 12m/s 7.3m/s
09:00
1% 8.1°C 0mm 92% 0cm 21° 9.3°C 0.38mm 0.09kPa 24135m 12m/s 7.4m/s
10:00
2% 8.6°C 0mm 90% 0cm 29° 10°C 0.5mm 0.13kPa 24135m 12m/s 8.1m/s
11:00
2% 8.6°C 0mm 88% 0cm 35° 10°C 0.63mm 0.15kPa 22781m 12m/s 8.8m/s
12:00
1% 8.9°C 0mm 89% 0cm 40° 11°C 0.88mm 0.15kPa 22215m 12m/s 8.9m/s
13:00
1% 9°C 0mm 91% 0cm 41° 10°C 1.1mm 0.11kPa 22837m 13m/s 8.5m/s
14:00
7% 8.7°C 0mm 91% 0cm 40° 10°C 0.19mm 0.11kPa 23435m 14m/s 8.9m/s
15:00
12% 8.8°C 0mm 86% 0cm 36° 11°C 0.44mm 0.18kPa 23866m 14m/s 9.4m/s
16:00
18% 8.9°C 0mm 84% 0cm 30° 11°C 0.69mm 0.21kPa 17956m 15m/s 9.8m/s
17:00
19% 9.2°C 0mm 89% 0cm 23° 11°C 1.1mm 0.14kPa 16638m 16m/s 10m/s
18:00
20% 8.9°C 0mm 92% 0cm 14° 10°C 1.3mm 0.11kPa 24135m 16m/s 9.9m/s
19:00
21% 8.7°C 0mm 93% 0cm 5.6° 9.9°C 1.3mm 0.09kPa 24134m 15m/s 9.7m/s
20:00 ☾
41% 8.1°C 0mm 90% 0cm -3.1° 9.6°C 0mm 0.12kPa 24134m 15m/s 9.2m/s
21:00 ☾
61% 7.7°C 0mm 89% 0cm -11° 9.4°C 0mm 0.13kPa 24135m 14m/s 8.5m/s
22:00 ☾
81% 7.5°C 0mm 87% 0cm -19° 9.6°C 0.06mm 0.16kPa 24134m 13m/s 7.9m/s
23:00 ☾
83% 7.5°C 0mm 88% 0cm -25° 9.4°C 0.06mm 0.14kPa 24134m 12m/s 7.3m/s
Wed, Sep 9 Sunrise 06:30 Sunset 19:43
24:00 ☾
86% 7.3°C 0mm 89% 0cm -29° 9°C 0.06mm 0.12kPa 24135m 11m/s 6.3m/s
01:00 ☾
88% 6.9°C 0mm 90% 0cm -30° 8.5°C 0.06mm 0.11kPa 24135m 11m/s 5.5m/s
02:00 ☾
91% 6.4°C 0mm 93% 0cm -29° 7.5°C 0mm 0.08kPa 24134m 11m/s 4.9m/s
03:00 ☾
95% 5.9°C 0mm 90% 0cm -26° 7.3°C 0mm 0.1kPa 24134m 11m/s 4.9m/s
04:00 ☾
98% 5.5°C 0mm 92% 0cm -20° 6.6°C 0mm 0.08kPa 24134m 11m/s 5m/s
05:00 ☾
98% 5.2°C 0mm 94% 0cm -13° 6.1°C 0mm 0.06kPa 24135m 10m/s 3.5m/s
06:00 ☾
97% 4°C 0mm 94% 0cm -5.2° 4.9°C 0mm 0.05kPa 24135m 2.1m/s 1.6m/s
07:00
97% 3.8°C 0mm 94% 0cm 3.5° 4.7°C 0mm 0.05kPa 24135m 1.4m/s 1.3m/s
08:00
98% 5.1°C 0mm 90% 0cm 12° 6.6°C 0mm 0.09kPa 24134m 2.6m/s 1.3m/s
09:00
99% 5°C 0mm 79% 0cm 21° 8.4°C 0mm 0.23kPa 24134m 7m/s 3.7m/s
10:00
100% 4.4°C 0mm 70% 0cm 28° 9.5°C 0mm 0.35kPa 24134m 7.6m/s 4.8m/s
11:00
99% 4.1°C 0mm 64% 0cm 35° 11°C 0mm 0.46kPa 24134m 7.1m/s 5m/s
12:00
97% 4.4°C 0mm 60% 0cm 39° 12°C 0mm 0.55kPa 24134m 6.6m/s 4.9m/s
13:00
96% 5.5°C 0mm 61% 0cm 41° 13°C 0mm 0.58kPa 24134m 6.2m/s 4.9m/s
14:00
89% 6.6°C 0mm 63% 0cm 40° 14°C 0mm 0.58kPa 24135m 6.1m/s 5.1m/s
15:00
82% 7.5°C 0mm 66% 0cm 36° 14°C 0mm 0.55kPa 24134m 5.3m/s 4.9m/s
16:00
75% 8.2°C 0mm 72% 0cm 30° 13°C 0mm 0.43kPa 24135m 6.1m/s 6.1m/s
17:00
77% 8.1°C 0mm 80% 0cm 22° 11°C 0.06mm 0.27kPa 24135m 7.3m/s 5.6m/s
18:00
78% 8°C 0mm 80% 0cm 14° 11°C 0.06mm 0.26kPa 24134m 6.4m/s 4.1m/s
19:00
80% 7.8°C 0mm 87% 0cm 5.3° 9.9°C 0.06mm 0.16kPa 24134m 7.1m/s 3.4m/s
20:00 ☾
66% 6.7°C 0mm 92% 0cm -3.5° 7.9°C 0mm 0.09kPa 24135m 3.3m/s 2.4m/s
21:00 ☾
53% 5.8°C 0mm 90% 0cm -12° 7.3°C 0mm 0.1kPa 24135m 2.1m/s 2.1m/s
22:00 ☾
39% 5.6°C 0mm 86% 0cm -19° 7.8°C 0mm 0.15kPa 24134m 3.3m/s 1.8m/s
23:00 ☾
32% 5.9°C 0mm 90% 0cm -25° 7.5°C 0mm 0.11kPa 24135m 2.4m/s 2.2m/s
Thu, Sep 10 Sunrise 06:31 Sunset 19:40
24:00 ☾
26% 7.1°C 0mm 89% 0cm -29° 8.8°C 0mm 0.13kPa 24135m 6.3m/s 2.3m/s
01:00 ☾
19% 7.5°C 0mm 94% 0cm -31° 8.4°C 0.06mm 0.07kPa 24135m 6.2m/s 2.4m/s
02:00 ☾
14% 7.6°C 0mm 96% 0cm -30° 8.2°C 0mm 0.05kPa 24134m 3.4m/s 2.5m/s
03:00 ☾
9% 8°C 0mm 95% 0cm -26° 8.7°C 0.06mm 0.06kPa 24135m 8m/s 2.8m/s
04:00 ☾
4% 7.6°C 0mm 96% 0cm -21° 8.3°C 0.06mm 0.04kPa 24134m 6.8m/s 2.9m/s
05:00 ☾
3% 7.4°C 0mm 95% 0cm -14° 8.2°C 0.13mm 0.05kPa 24135m 8.3m/s 3m/s
06:00 ☾
1% 6.9°C 0mm 96% 0cm -5.5° 7.5°C 0.19mm 0.04kPa 24134m 6m/s 2.7m/s
07:00
0% 6.7°C 0mm 96% 0cm 3.3° 7.3°C 0.19mm 0.04kPa 24134m 5.2m/s 2.6m/s
08:00
4% 8.2°C 0mm 88% 0cm 12° 10°C 0.13mm 0.15kPa 24134m 6.9m/s 3.8m/s
09:00
8% 9.4°C 0mm 80% 0cm 20° 13°C 0.06mm 0.3kPa 24135m 8.5m/s 5.1m/s
10:00
12% 11°C 0mm 71% 0cm 28° 16°C 0mm 0.51kPa 24135m 10m/s 6.3m/s
11:00
10% 11°C 0.08mm 77% 0cm 34° 15°C 0.17mm 0.39kPa 23064m 10m/s 5.2m/s
12:00
7% 11°C 0.17mm 82% 0cm 39° 14°C 0.33mm 0.28kPa 21993m 9.7m/s 4.1m/s
13:00
5% 11°C 0.25mm 88% 0cm 41° 13°C 0.5mm 0.18kPa 20922m 9.5m/s 3m/s
14:00
6% 11°C 0.22mm 90% 0cm 39° 13°C 0.65mm 0.14kPa 21993m 10m/s 3.4m/s
15:00
6% 11°C 0.2mm 93% 0cm 36° 12°C 0.79mm 0.1kPa 23064m 11m/s 3.8m/s
16:00
7% 12°C 0.17mm 96% 0cm 29° 12°C 0.94mm 0.06kPa 24135m 11m/s 4.1m/s
17:00
5% 12°C 0.11mm 96% 0cm 22° 13°C 1.2mm 0.05kPa 17918m 11m/s 4m/s
18:00
3% 12°C 0.06mm 97% 0cm 14° 13°C 1.4mm 0.04kPa 11700m 11m/s 3.9m/s
19:00
1% 13°C 0mm 98% 0cm 4.9° 13°C 1.7mm 0.03kPa 5483m 11m/s 3.8m/s
20:00 ☾
1% 13°C 0.02mm 97% 0cm -3.8° 13°C 1.5mm 0.04kPa 11701m 9.6m/s 3.7m/s
21:00 ☾
0% 13°C 0.05mm 97% 0cm -12° 13°C 1.4mm 0.05kPa 17918m 8.7m/s 3.7m/s
22:00 ☾
0% 13°C 0.07mm 96% 0cm -20° 14°C 1.2mm 0.06kPa 24135m 7.7m/s 3.6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →
Forecast generated

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