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Rule Fog Hunter

Grindelwald - Fog Hunter - Alps

Grindelwald, Bern, Switzerland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
100%
Dewpoint Spread1.0°C
Visibility501 (Fog)
Relative Humidity92%
Wind Speed3.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich
Next opportunity
Dense Fog (lingering)
Grindelwald
Tomorrow · 01:00–02:00 · 1h window
Medium confidence
63%
🌫️Fog Probability100%
Dewpoint Spread: 1.4°C
Visibility: 504 (Fog)
Relative Humidity: 89%
Wind Speed: 1.9m/s (calm conditions)
fog weather icon
Dense Fog (lingering) at Sunset
Grindelwald
Tomorrow · 17:00–18:00
🌫️Fog Probability:100%
High

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72-hour requirements breakdown

What passed or failed, hour by hour
2matching hours in the next 72 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Zurich
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sun, Feb 8
07:00100%0.9°C537m2.9m/s
08:00100%1°C501m3m/s
09:0094%1.1°C1244m2.7m/s
10:000%1.4°C11426m2.6m/s
11:000%1.8°C9481m2.5m/s
12:000%2.1°C15457m2.5m/s
13:000%2.4°C17483m2.3m/s
14:000%2.6°C16628m2.2m/s
15:000%2.5°C16567m1.8m/s
16:000%2.1°C19684m1.8m/s
17:000%1.2°C14346m2m/s
18:000%1°C10859m2.5m/s
19:0094%1.1°C1549m2.6m/s
20:00100%1.1°C836m2.6m/s
21:00100%1.2°C508m2.6m/s
22:00100%1.1°C382m2.6m/s
23:00100%1°C261m2.5m/s
Mon, Feb 9
24:00100%1°C294m2.2m/s
01:00100%1.4°C504m1.9m/s
02:000%2°C16420m1.5m/s
03:000%4.1°C24134m1.1m/s
04:000%4.9°C24135m1.1m/s
05:000%5.4°C24135m1.1m/s
06:000%5.4°C24135m1.2m/s
07:000%5.7°C24134m1.5m/s
08:000%5.9°C24134m1.6m/s
09:000%5°C24135m1.6m/s
10:000%4.1°C24135m1.3m/s
11:000%4°C21676m1.3m/s
12:000%3.8°C21501m1.1m/s
13:000%3.8°C23613m0.83m/s
14:000%3°C24135m0.97m/s
15:000%2.5°C23075m1.2m/s
16:000%1.9°C9518m0.92m/s
17:00100%0.3°C1950m0.77m/s
18:0094%0.4°C4320m0.52m/s
19:0076%0.7°C9817m1.6m/s
20:0099%0.9°C1754m2.1m/s
21:0088%0.9°C2041m2.1m/s
22:000%1.4°C8487m2.1m/s
23:000%2°C8251m1.8m/s
Tue, Feb 10
24:000%2.4°C8167m1.9m/s
01:000%2.7°C8553m2m/s
02:000%2.4°C8371m2.2m/s
03:000%2.1°C8546m2.2m/s
04:000%2.4°C8628m2.2m/s
05:000%3.1°C9591m2m/s
06:000%3.8°C9618m2m/s
07:000%4.1°C8469m1.9m/s
08:000%4.6°C8438m2.2m/s
09:000%3.8°C8759m2.4m/s
10:000%3.6°C8465m2.6m/s
11:000%3.4°C9668m2.5m/s
12:000%3.8°C21270m2m/s
13:000%3.6°C21485m1.9m/s
14:000%2.7°C14487m2.5m/s
15:000%1.8°C7489m3.2m/s
16:00100%1.1°C491m3.8m/s
17:0053%1.2°C668m3.9m/s
18:0053%1.2°C845m4m/s
19:0033%1.2°C1023m4.1m/s
20:000%1.1°C768m3.5m/s
21:000%1°C512m3m/s
22:000%0.8°C257m2.5m/s
23:000%0.7°C270m2.6m/s
Wed, Feb 11
24:000%0.5°C284m2.7m/s
01:000%0.5°C297m2.8m/s
02:000%0.4°C242m2.7m/s
03:000%0.4°C187m2.5m/s
04:000%0.5°C133m2.3m/s
05:000%1.5°C8134m2.7m/s
06:000%2.8°C16134m3.1m/s
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/Zurich
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Sun, Feb 8 Sunrise 07:42 Sunset 17:41
08:00
-12°C 0mm 92% 0cm -11°C 0mm 0.02kPa 2.7m/s
09:00
-10°C 0mm 92% 0cm -9.1°C 0mm 0.03kPa 2.5m/s
10:00
-8.7°C 0mm 90% 0cm -7.3°C 0mm 0.04kPa 2.4m/s
11:00
-8°C 0.01mm 87% 0cm -6.2°C 0mm 0.05kPa 2.3m/s
12:00
-7.7°C 0.01mm 85% 0cm -5.6°C 0mm 0.06kPa 2.2m/s
13:00
-7.6°C 0.01mm 83% 0cm -5.2°C 0.06mm 0.07kPa 2.1m/s
14:00
-7.7°C 0.01mm 82% 0cm -5.1°C 0mm 0.07kPa 2m/s
15:00
-7.8°C 0.01mm 82% 0cm -5.3°C 0mm 0.07kPa 1.7m/s
16:00
-7.8°C 0mm 85% 0cm -5.7°C 0mm 0.06kPa 1.8m/s
17:00
-9.4°C 0mm 91% 0cm -8.2°C 0mm 0.03kPa 1.8m/s
18:00 ☾
-12°C 0mm 92% 0cm -11°C 0mm 0.02kPa 2.3m/s
19:00 ☾
-12°C 0mm 92% 0cm -11°C 0mm 0.02kPa 2.5m/s
20:00 ☾
-12°C 0mm 92% 0cm -11°C 0mm 0.02kPa 2.7m/s
21:00 ☾
-12°C 0mm 91% 0cm -11°C 0mm 0.02kPa 2.7m/s
22:00 ☾
-12°C 0mm 91% 0cm -11°C 0mm 0.02kPa 2.6m/s
23:00 ☾
-12°C 0mm 93% 0cm -11°C 0mm 0.02kPa 2.6m/s
Mon, Feb 9 Sunrise 07:42 Sunset 17:41
24:00 ☾
-12°C 0mm 92% 0cm -11°C 0mm 0.02kPa 2.4m/s
01:00 ☾
-13°C 0mm 89% 0cm -12°C 0mm 0.03kPa 2.2m/s
02:00 ☾
-14°C 0mm 85% 0cm -12°C 0mm 0.04kPa 2.2m/s
03:00 ☾
-16°C 0mm 72% 0cm -12°C 0mm 0.07kPa 2m/s
04:00 ☾
-17°C 0mm 67% 0cm -12°C 0mm 0.08kPa 2m/s
05:00 ☾
-17°C 0mm 64% 0cm -12°C 0mm 0.09kPa 2m/s
06:00 ☾
-18°C 0mm 64% 0cm -12°C 0mm 0.09kPa 2m/s
07:00 ☾
-18°C 0mm 62% 0cm -12°C 0mm 0.09kPa 2.1m/s
08:00
-18°C 0mm 61% 0cm -12°C 0mm 0.09kPa 2.1m/s
09:00
-15°C 0mm 67% 0cm -9.7°C 0mm 0.1kPa 1.8m/s
10:00
-11°C 0mm 72% 0cm -6.6°C 0mm 0.1kPa 1.3m/s
11:00
-9.8°C 0mm 73% 0cm -5.8°C 0mm 0.11kPa 1.2m/s
12:00
-9.2°C 0mm 75% 0cm -5.4°C 0mm 0.1kPa 1.1m/s
13:00
-9.2°C 0mm 75% 0cm -5.4°C 0mm 0.1kPa 0.9m/s
14:00
-8.1°C 0mm 79% 0cm -5.1°C 0mm 0.09kPa 0.9m/s
15:00
-7.4°C 0mm 82% 0cm -4.9°C 0mm 0.08kPa 1.1m/s
16:00
-7.1°C 0.01mm 87% 0.02cm -5.2°C 0mm 0.05kPa 1m/s
17:00
-8.4°C 0.03mm 98% 0.04cm -8.1°C 0.06mm 0.01kPa 0.81m/s
18:00 ☾
-11°C 0.01mm 97% 0.01cm -10°C 0.06mm 0.01kPa 1.2m/s
19:00 ☾
-11°C 0mm 94% 0cm -11°C 0.06mm 0.01kPa 1.9m/s
20:00 ☾
-10°C 0mm 93% 0cm -9.6°C 0mm 0.02kPa 2m/s
21:00 ☾
-10°C 0mm 93% 0cm -9.5°C 0mm 0.02kPa 1.9m/s
22:00 ☾
-11°C 0mm 90% 0cm -10°C 0mm 0.03kPa 2m/s
23:00 ☾
-14°C 0mm 85% 0cm -12°C 0mm 0.04kPa 2.1m/s
Tue, Feb 10 Sunrise 07:41 Sunset 17:43
24:00 ☾
-14°C 0mm 82% 0cm -12°C 0mm 0.04kPa 2.1m/s
01:00 ☾
-15°C 0mm 80% 0cm -12°C 0mm 0.05kPa 2.2m/s
02:00 ☾
-14°C 0mm 82% 0cm -12°C 0mm 0.04kPa 2.3m/s
03:00 ☾
-14°C 0mm 84% 0cm -12°C 0mm 0.04kPa 2.3m/s
04:00 ☾
-14°C 0mm 82% 0cm -12°C 0mm 0.04kPa 2.3m/s
05:00 ☾
-14°C 0mm 78% 0cm -11°C 0mm 0.06kPa 2.1m/s
06:00 ☾
-15°C 0mm 73% 0cm -11°C 0mm 0.07kPa 2.2m/s
07:00 ☾
-15°C 0mm 71% 0cm -11°C 0mm 0.08kPa 2.1m/s
08:00
-15°C 0mm 69% 0cm -11°C 0mm 0.08kPa 2.2m/s
09:00
-13°C 0mm 74% 0cm -9.1°C 0mm 0.08kPa 2.2m/s
10:00
-11°C 0mm 76% 0cm -7.2°C 0mm 0.09kPa 2.4m/s
11:00
-9.7°C 0mm 77% 0cm -6.3°C 0mm 0.09kPa 2.3m/s
12:00
-9.2°C 0mm 75% 0cm -5.4°C 0mm 0.1kPa 1.8m/s
13:00
-8.5°C 0mm 76% 0cm -4.9°C 0mm 0.1kPa 1.8m/s
14:00
-8.9°C 0.03mm 81% 0.03cm -6.2°C 0.02mm 0.07kPa 2.3m/s
15:00
-9.4°C 0.05mm 86% 0.06cm -7.6°C 0.04mm 0.05kPa 2.8m/s
16:00
-10°C 0.08mm 92% 0.08cm -8.9°C 0.06mm 0.03kPa 3.3m/s
17:00
-9.6°C 0.32mm 92% 0.32cm -8.4°C 0.33mm 0.03kPa 3.5m/s
18:00 ☾
-9.2°C 0.55mm 91% 0.55cm -8°C 0.6mm 0.03kPa 3.7m/s
19:00 ☾
-8.8°C 0.79mm 91% 0.79cm -7.6°C 0.88mm 0.03kPa 3.9m/s
20:00 ☾
-7.7°C 0.67mm 92% 0.69cm -6.6°C 2mm 0.03kPa 3.7m/s
21:00 ☾
-6.6°C 0.56mm 93% 0.6cm -5.6°C 3.1mm 0.03kPa 3.6m/s
22:00 ☾
-5.5°C 0.44mm 94% 0.5cm -4.7°C 4.3mm 0.03kPa 3.4m/s
23:00 ☾
-5.4°C 0.61mm 95% 0.7cm -4.7°C 5.7mm 0.02kPa 3.3m/s
Wed, Feb 11 Sunrise 07:39 Sunset 17:44
24:00 ☾
-5.2°C 0.78mm 96% 0.9cm -4.7°C 7.2mm 0.02kPa 3.2m/s
01:00 ☾
-5.1°C 0.95mm 96% 1.1cm -4.6°C 8.7mm 0.02kPa 3.1m/s
02:00 ☾
-5°C 1.4mm 97% 1.6cm -4.6°C 6.8mm 0.01kPa 3m/s
03:00 ☾
-4.9°C 1.8mm 97% 2.2cm -4.5°C 5mm 0.01kPa 3m/s
04:00 ☾
-4.9°C 2.3mm 97% 2.7cm -4.4°C 3.1mm 0.01kPa 2.9m/s
05:00 ☾
-5.7°C 1.6mm 89% 1.9cm -4.2°C 4.2mm 0.05kPa 3.9m/s
06:00 ☾
-6.7°C 0.89mm 81% 1.1cm -3.9°C 5.3mm 0.09kPa 5m/s
07:00 ☾
-7.9°C 0.21mm 72% 0.24cm -3.7°C 6.4mm 0.13kPa 6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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