What conditions does Fog Hunter look for?

Fog Probability: ≥ 85.0%. Dewpoint Spread: ≤ 2.0°C. Visibility: ≤ 3000.0m. Wind Speed: ≤ 2.0m/s

How often do conditions match?

There are 2 upcoming opportunity windows in the next 10 days.

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Rule Fog Hunter

Lauterbrunnen - Fog Hunter - Alps

Lauterbrunnen, Bern, Switzerland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

74%

Dewpoint Spread1.0°C

Visibility549 (Fog)

Relative Humidity92%

Wind Speed4.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich

Next opportunity

Dense Fog (lingering)

Lauterbrunnen

Sun, Feb 22 · 16:00–17:00 · 1h window

Medium confidence

48%

🌫️Fog Probability92.9%

Dewpoint Spread: 1.2°C

Visibility: 291 (Fog)

Relative Humidity: 91%

Wind Speed: 1.9m/s (calm conditions)

Dense Fog (lingering, sunbreaks) at Sunrise

Lauterbrunnen

Wed, Feb 25 · 07:00–08:00

🌫️Fog Probability:100%

Medium

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72-hour requirements breakdown

What passed or failed, hour by hour

1matching hours in the next 95 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
Tue, Feb 17
20:00	76%	0.6°C	6686m	3.6m/s
21:00	100%	0.8°C	819m	2.8m/s
22:00	100%	0.6°C	406m	2.1m/s
23:00	100%	1°C	462m	1.8m/s
Wed, Feb 18
24:00	0%	1.7°C	7340m	1.6m/s
01:00	0%	4.3°C	24135m	1.6m/s
02:00	0%	8.1°C	24134m	1.5m/s
03:00	0%	13°C	24135m	2m/s
04:00	0%	13°C	24135m	1.7m/s
05:00	0%	10°C	11465m	1.6m/s
06:00	0%	10°C	6563m	1.6m/s
07:00	60%	6.3°C	1554m	1.5m/s
08:00	43%	2.9°C	317m	1.6m/s
09:00	55%	1°C	246m	1.9m/s
10:00	0%	0.9°C	363m	2.2m/s
11:00	0%	0.9°C	338m	2.5m/s
12:00	0%	0.9°C	418m	2.7m/s
13:00	0%	0.8°C	1171m	2.9m/s
14:00	73%	0.7°C	3245m	2.8m/s
15:00	60%	1°C	11034m	2.5m/s
16:00	67%	0.9°C	8606m	2.4m/s
17:00	100%	0.8°C	797m	2.5m/s
18:00	100%	0.8°C	472m	3.5m/s
19:00	100%	0.8°C	592m	3.8m/s
20:00	74%	1°C	549m	4m/s
21:00	100%	1°C	305m	3.9m/s
22:00	74%	1.1°C	438m	4.2m/s
23:00	74%	1°C	491m	5m/s
Thu, Feb 19
24:00	77%	0.8°C	384m	5.1m/s
01:00	77%	0.8°C	471m	4.9m/s
02:00	77%	0.7°C	954m	4.8m/s
03:00	69%	0.9°C	1508m	5.1m/s
04:00	53%	1.1°C	484m	2.6m/s
05:00	0%	0.9°C	260m	1.1m/s
06:00	0%	0.7°C	249m	0.39m/s
07:00	0%	0.5°C	128m	1m/s
08:00	55%	0.9°C	244m	1.5m/s
09:00	0%	1.8°C	22072m	1.7m/s
10:00	46%	1°C	378m	2.5m/s
11:00	0%	1.3°C	1018m	2.9m/s
12:00	0%	1.5°C	2885m	3.8m/s
13:00	0%	1.2°C	479m	4m/s
14:00	30%	1.1°C	326m	4.1m/s
15:00	33%	1.2°C	339m	4.2m/s
16:00	0%	1.1°C	358m	3.9m/s
17:00	0%	0.8°C	346m	3.8m/s
18:00	0%	0.6°C	2885m	3.2m/s
19:00	0%	0.7°C	463m	3.3m/s
20:00	99%	0.7°C	1911m	2.8m/s
21:00	55%	0.8°C	277m	3m/s
22:00	55%	0.7°C	235m	3.2m/s
23:00	0%	0.6°C	132m	3.8m/s
Fri, Feb 20
24:00	0%	0.5°C	141m	3.8m/s
01:00	0%	0.5°C	182m	4.1m/s
02:00	40%	0.5°C	195m	4.1m/s
03:00	40%	0.6°C	437m	4m/s
04:00	38%	0.8°C	422m	4.2m/s
05:00	38%	0.9°C	354m	4.3m/s
06:00	0%	0.7°C	540m	4.4m/s
07:00	0%	0.6°C	788m	4.2m/s
08:00	88%	0.6°C	2590m	3.4m/s
09:00	100%	0.5°C	510m	3m/s
10:00	100%	0.7°C	312m	3.9m/s
11:00	30%	1.2°C	481m	4m/s
12:00	41%	1.4°C	651m	3.7m/s
13:00	36%	1.5°C	1255m	3.8m/s
14:00	63%	1.6°C	2438m	3.6m/s
15:00	79%	1.5°C	1719m	3.4m/s
16:00	0%	1.3°C	4356m	3.3m/s
17:00	100%	0.5°C	751m	3.3m/s
18:00	58%	0.3°C	252m	3.4m/s
19:00	58%	0.3°C	187m	3.4m/s
20:00	100%	0.3°C	438m	2.7m/s
21:00	0%	1°C	7406m	2.2m/s
22:00	0%	2°C	24134m	2.3m/s
23:00	0%	1.5°C	3862m	1.4m/s
Sat, Feb 21
24:00	0%	1.7°C	18014m	1.9m/s
01:00	0%	1.8°C	10220m	2.8m/s
02:00	0%	2.6°C	14858m	2.8m/s
03:00	0%	3.4°C	19497m	2.8m/s
04:00	0%	4.4°C	24135m	2.8m/s
05:00	0%	3.9°C	20026m	3m/s
06:00	0%	3.6°C	15918m	3.3m/s
07:00	0%	3.1°C	11809m	3.5m/s
08:00	0%	3°C	15918m	3.3m/s
09:00	0%	2.9°C	20026m	3.2m/s
10:00	0%	2.7°C	24135m	3m/s
11:00	0%	3.2°C	24135m	3.1m/s
12:00	0%	3.6°C	24135m	3.1m/s
13:00	0%	4.1°C	24135m	3.2m/s
14:00	0%	3.8°C	24135m	2.9m/s
15:00	0%	3.6°C	24135m	2.5m/s
16:00	0%	3.3°C	24135m	2.2m/s
17:00	0%	3.5°C	24135m	2.1m/s
18:00	0%	3.7°C	24135m	1.9m/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
Wed, Feb 18 Sunrise 07:27 Sunset 17:57
20:00 ☾	-8.5°C	0mm	92%	0cm	-7.5°C	0mm	0.03kPa	3.7m/s
21:00 ☾	-10°C	0mm	92%	0cm	-9.1°C	0mm	0.02kPa	3.4m/s
22:00 ☾	-10°C	0mm	92%	0cm	-8.9°C	0mm	0.03kPa	3.9m/s
23:00 ☾	-12°C	0mm	92%	0cm	-11°C	0mm	0.02kPa	4.5m/s
Thu, Feb 19 Sunrise 07:27 Sunset 17:57
24:00 ☾	-13°C	0.01mm	94%	0cm	-12°C	0mm	0.02kPa	4.7m/s
01:00 ☾	-13°C	0.02mm	94%	0cm	-12°C	0.06mm	0.01kPa	4.7m/s
02:00 ☾	-12°C	0.02mm	94%	0cm	-12°C	0mm	0.02kPa	4.6m/s
03:00 ☾	-12°C	0.13mm	93%	0.13cm	-11°C	0.06mm	0.02kPa	4.8m/s
04:00 ☾	-12°C	0.26mm	91%	0.26cm	-11°C	0.31mm	0.02kPa	2.7m/s
05:00 ☾	-11°C	0.65mm	93%	0.65cm	-9.7°C	1.1mm	0.02kPa	1.3m/s
06:00 ☾	-9.5°C	0.63mm	95%	0.63cm	-8.8°C	1.6mm	0.02kPa	0.81m/s
07:00 ☾	-9.2°C	0.69mm	96%	0.69cm	-8.7°C	2.2mm	0.01kPa	1.1m/s
08:00	-8.9°C	0.42mm	94%	0.42cm	-8°C	0.63mm	0.02kPa	1.4m/s
09:00	-8.4°C	0mm	87%	0cm	-6.6°C	0.75mm	0.05kPa	2m/s
10:00	-7.6°C	0.24mm	92%	0.24cm	-6.6°C	0.81mm	0.03kPa	2.6m/s
11:00	-7.4°C	0.1mm	90%	0.12cm	-6.1°C	1mm	0.04kPa	3.1m/s
12:00	-7.3°C	0.03mm	90%	0.05cm	-5.8°C	1mm	0.04kPa	4m/s
13:00	-6.9°C	0.15mm	91%	0.31cm	-5.7°C	1.2mm	0.04kPa	4.2m/s
14:00	-6.7°C	0.31mm	92%	0.5cm	-5.6°C	0.38mm	0.03kPa	4.4m/s
15:00	-7°C	0.28mm	91%	0.39cm	-5.8°C	0.81mm	0.04kPa	4.4m/s
16:00	-7.3°C	0.17mm	92%	0.24cm	-6.2°C	1.2mm	0.03kPa	4.1m/s
17:00	-7.6°C	0.21mm	94%	0.22cm	-6.8°C	1.3mm	0.02kPa	4m/s
18:00 ☾	-8.6°C	0.02mm	95%	0.05cm	-8°C	1.4mm	0.02kPa	3m/s
19:00 ☾	-10°C	0.08mm	94%	0.08cm	-9.3°C	1.5mm	0.02kPa	3.2m/s
20:00 ☾	-9.4°C	0.05mm	95%	0.05cm	-8.7°C	0.06mm	0.02kPa	2.9m/s
21:00 ☾	-11°C	0.3mm	93%	0.3cm	-9.8°C	0.19mm	0.02kPa	2.7m/s
22:00 ☾	-8.8°C	0.46mm	94%	0.46cm	-8.1°C	0.5mm	0.02kPa	3.4m/s
23:00 ☾	-8.3°C	0.84mm	96%	0.84cm	-7.7°C	1.2mm	0.01kPa	3.9m/s
Fri, Feb 20 Sunrise 07:25 Sunset 17:59
24:00 ☾	-8°C	0.55mm	96%	0.55cm	-7.5°C	1.8mm	0.01kPa	4.1m/s
01:00 ☾	-8.2°C	0.45mm	96%	0.45cm	-7.7°C	2.3mm	0.01kPa	4.3m/s
02:00 ☾	-8.7°C	0.31mm	96%	0.32cm	-8.2°C	0.38mm	0.01kPa	4m/s
03:00 ☾	-9.1°C	0.17mm	95%	0.18cm	-8.5°C	0.56mm	0.02kPa	3.9m/s
04:00 ☾	-10°C	0.2mm	94%	0.2cm	-9.4°C	0.75mm	0.02kPa	3.5m/s
05:00 ☾	-11°C	0.24mm	93%	0.24cm	-9.7°C	0.94mm	0.02kPa	3.6m/s
06:00 ☾	-10°C	0.14mm	94%	0.15cm	-9.6°C	1.1mm	0.02kPa	4.1m/s
07:00 ☾	-10°C	0.09mm	96%	0.1cm	-9.7°C	1.3mm	0.01kPa	3.6m/s
08:00	-10°C	0.03mm	95%	0.03cm	-9.5°C	0.06mm	0.02kPa	3.2m/s
09:00	-9.1°C	0.03mm	96%	0cm	-8.6°C	0.06mm	0.01kPa	3.1m/s
10:00	-8.2°C	0.06mm	95%	0.07cm	-7.5°C	0.13mm	0.02kPa	3.9m/s
11:00	-7.9°C	0.19mm	91%	0.2cm	-6.7°C	0.25mm	0.03kPa	4m/s
12:00	-7.5°C	0.15mm	90%	0.17cm	-6.1°C	0.44mm	0.04kPa	3.7m/s
13:00	-7.4°C	0.09mm	89%	0.11cm	-5.9°C	0.56mm	0.04kPa	3.7m/s
14:00	-7.3°C	0.05mm	89%	0.06cm	-5.7°C	0.06mm	0.04kPa	3.5m/s
15:00	-7.5°C	0.05mm	89%	0.06cm	-6°C	0.13mm	0.04kPa	3.4m/s
16:00	-7.7°C	0.02mm	90%	0cm	-6.4°C	0.19mm	0.04kPa	3.4m/s
17:00	-8.1°C	0.03mm	96%	0.04cm	-7.6°C	0.19mm	0.02kPa	3.3m/s
18:00	-8.4°C	0.02mm	97%	0cm	-8.1°C	0.25mm	0.01kPa	3.2m/s
19:00 ☾	-8.2°C	0.01mm	98%	0cm	-7.9°C	0.25mm	0.01kPa	3.3m/s
20:00 ☾	-8.6°C	0.01mm	98%	0cm	-8.3°C	0mm	0.01kPa	2.7m/s
21:00 ☾	-9.9°C	0mm	92%	0cm	-8.9°C	0mm	0.02kPa	2.3m/s
22:00 ☾	-12°C	0mm	85%	0cm	-9.8°C	0mm	0.04kPa	2.5m/s
23:00 ☾	-12°C	0.01mm	88%	0.01cm	-10°C	0mm	0.03kPa	2.4m/s
Sat, Feb 21 Sunrise 07:24 Sunset 18:00
24:00 ☾	-11°C	0mm	87%	0cm	-9°C	0mm	0.04kPa	2.4m/s
01:00 ☾	-11°C	0mm	87%	0cm	-9.1°C	0mm	0.04kPa	2.7m/s
02:00 ☾	-9.2°C	0mm	82%	0cm	-6.6°C	0mm	0.07kPa	2.9m/s
03:00 ☾	-7.5°C	0mm	77%	0cm	-4.1°C	0mm	0.1kPa	3m/s
04:00 ☾	-5.9°C	0mm	72%	0cm	-1.5°C	0mm	0.15kPa	3.2m/s
05:00 ☾	-5.1°C	0mm	75%	0cm	-1.2°C	0mm	0.14kPa	3.4m/s
06:00 ☾	-4.4°C	0mm	77%	0cm	-0.82°C	0mm	0.13kPa	3.6m/s
07:00 ☾	-3.6°C	0mm	79%	0cm	-0.47°C	0mm	0.12kPa	3.8m/s
08:00	-3.9°C	0mm	80%	0cm	-0.87°C	0mm	0.11kPa	3.7m/s
09:00	-4.2°C	0mm	81%	0cm	-1.3°C	0mm	0.11kPa	3.6m/s
10:00	-4.4°C	0mm	82%	0cm	-1.7°C	0mm	0.1kPa	3.6m/s
11:00	-6.1°C	0mm	79%	0cm	-2.9°C	0mm	0.11kPa	3.3m/s
12:00	-7.8°C	0mm	76%	0cm	-4.2°C	0mm	0.11kPa	3m/s
13:00	-9.5°C	0mm	73%	0cm	-5.4°C	0mm	0.11kPa	2.7m/s
14:00	-9.8°C	0mm	74%	0cm	-6°C	0mm	0.1kPa	2.7m/s
15:00	-10°C	0mm	76%	0cm	-6.5°C	0mm	0.09kPa	2.6m/s
16:00	-10°C	0mm	77%	0cm	-7.1°C	0mm	0.08kPa	2.5m/s
17:00	-11°C	0mm	76%	0cm	-7.1°C	0mm	0.09kPa	2.5m/s
18:00	-11°C	0mm	75%	0cm	-7.1°C	0mm	0.09kPa	2.5m/s
19:00 ☾	-11°C	0mm	74%	0cm	-7°C	0mm	0.1kPa	2.5m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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