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Rule Fog Hunter

Fog Hunter Forecast for Yufuin, Kyushu

Yufu, Oita, Japan

Mount Yufu rises beyond the wooded shore of Lake Kinrinko. Bridges, reeds, and low lakeside buildings give its reflection scale and distinguish the water from the mountain backdrop.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread1.5°C
Visibility24134 (Clear)
Relative Humidity92%
Wind Speed1.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
fog weather icon
Next opportunity
Dense Fog at Sunset
Yufuin
Fri, Sep 11 · 18:00–19:00 · 1h window
Medium confidence
67%
🌫️Fog Probability100%
Dewpoint Spread: 0.1°C
Visibility: 245 (Fog)
Relative Humidity: 100%
Wind Speed: 0.4m/s (calm conditions)
fog weather icon
Dense Fog
Yufuin
Fri, Sep 11 · 19:00–03:00
🌫️Fog Probability:86-100%
High

How this forecast is evaluated

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

Explore Fog Hunter conditions across Kyushu →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
11
recorded matching windows · 83% average confidence
Last 365 days
21
recorded matching windows · 82% average confidence
Most frequent recorded start hour

22:00 local time, shared by 7 of 21 matches recorded in the last 365 days.

Most represented month

May, with 8 of 21 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
Asia/Tokyo
Fog Probability
≥ 75.0%
Mon, Sep 7
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, 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%
22:0053%
23:0053%
Wed, Sep 9
24:0053%
01:0053%
02:0053%
03:0053%
04:0071%
05:000%
06:000%
07:000%
08:000%
09:000%
10:0031%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:0035%
23:000%
Thu, Sep 10
24:000%
01:000%
02:000%
03:000%
04:000%
05:0053%
06:0053%
07:0029%
08:000%
09:000%
10:0042%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:0028%
18:0066%
19:0063%
20:0063%
21:0063%
22:0051%
23:0051%
Fri, Sep 11
24:0051%
01:0049%
02:0049%
03:0048%
04:0032%
05:000%
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
Asia/Tokyo
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
Tue, Sep 8 Sunrise 05:52 Sunset 18:32
07:00 ☾
0% 21°C 0mm 92% 0cm 13° 22°C 0.06mm 0.23kPa 24134m 1.2m/s 1m/s
08:00 ☾
0% 21°C 0mm 87% 0cm 26° 23°C 0.06mm 0.37kPa 24135m 1.9m/s 1.1m/s
09:00
0% 21°C 0mm 80% 0cm 38° 24°C 0.06mm 0.61kPa 24135m 2.8m/s 1.6m/s
10:00
0% 21°C 0mm 77% 0cm 49° 25°C 0mm 0.72kPa 24135m 3.1m/s 1.8m/s
11:00
0% 22°C 0mm 86% 0cm 58° 25°C 0.31mm 0.45kPa 9750m 2.9m/s 1.7m/s
12:00
0% 22°C 0mm 90% 0cm 62° 24°C 0.5mm 0.29kPa 24135m 2.7m/s 1.5m/s
13:00
0% 23°C 0.01mm 92% 0cm 60° 24°C 0.75mm 0.24kPa 24135m 2.1m/s 1.1m/s
14:00
0% 23°C 0mm 91% 0cm 53° 24°C 0.81mm 0.28kPa 24134m 2.5m/s 0.95m/s
15:00
0% 23°C 0mm 90% 0cm 42° 24°C 0.81mm 0.29kPa 24134m 1.8m/s 0.98m/s
16:00
0% 23°C 0mm 91% 0cm 31° 24°C 0.13mm 0.27kPa 22073m 1.6m/s 1.1m/s
17:00
0% 22°C 0mm 92% 0cm 18° 24°C 0.38mm 0.22kPa 22940m 1.4m/s 1.2m/s
18:00
0% 22°C 0.1mm 93% 0cm 5.8° 23°C 0.56mm 0.2kPa 22984m 1.3m/s 1m/s
19:00 ☾
0% 22°C 0.26mm 95% 0cm -6.8° 23°C 1.3mm 0.13kPa 10739m 1m/s 0.92m/s
20:00 ☾
0% 22°C 0.32mm 96% 0cm -19° 22°C 1.8mm 0.1kPa 21913m 1.3m/s 1.3m/s
21:00 ☾
0% 22°C 0.1mm 97% 0cm -30° 22°C 2mm 0.09kPa 24135m 1.5m/s 1.5m/s
22:00 ☾
1% 22°C 0.01mm 96% 0cm -40° 22°C 0.06mm 0.09kPa 24134m 1.6m/s 1.6m/s
23:00 ☾
1% 22°C 0mm 96% 0cm -48° 22°C 0.06mm 0.1kPa 24134m 1.7m/s 1.7m/s
Wed, Sep 9 Sunrise 05:53 Sunset 18:30
24:00 ☾
2% 22°C 0mm 96% 0cm -51° 22°C 0.06mm 0.11kPa 24135m 1.5m/s 1.5m/s
01:00 ☾
2% 22°C 0mm 96% 0cm -50° 22°C 0.06mm 0.11kPa 24135m 1.4m/s 1.5m/s
02:00 ☾
3% 22°C 0mm 96% 0cm -44° 22°C 0.06mm 0.09kPa 24135m 1.9m/s 1.6m/s
03:00 ☾
3% 22°C 0mm 97% 0cm -35° 22°C 0.06mm 0.09kPa 24134m 2.3m/s 1.8m/s
04:00 ☾
5% 22°C 0.02mm 97% 0cm -24° 22°C 0.13mm 0.08kPa 17723m 2.9m/s 2m/s
05:00 ☾
6% 22°C 1mm 98% 0cm -12° 22°C 0.31mm 0.07kPa 2330m 3.6m/s 2.1m/s
06:00 ☾
8% 22°C 3.7mm 98% 0cm 0.88° 22°C 2.6mm 0.04kPa 716m 3.5m/s 1.7m/s
07:00 ☾
8% 22°C 2.3mm 98% 0cm 13° 22°C 6.3mm 0.04kPa 1848m 3.8m/s 2.1m/s
08:00 ☾
7% 22°C 0.41mm 98% 0cm 25° 22°C 7.8mm 0.05kPa 15882m 3.5m/s 2.1m/s
09:00
7% 22°C 0.52mm 98% 0cm 38° 22°C 8.4mm 0.06kPa 11395m 3.6m/s 2.1m/s
10:00
5% 22°C 0.37mm 98% 0cm 49° 22°C 0.5mm 0.06kPa 12777m 4.2m/s 2.1m/s
11:00
3% 22°C 0.58mm 98% 0cm 58° 22°C 1.3mm 0.07kPa 4082m 4.9m/s 2.2m/s
12:00
1% 22°C 0.82mm 98% 0cm 62° 22°C 3mm 0.06kPa 2351m 5.5m/s 2.2m/s
13:00
1% 22°C 2.2mm 98% 0cm 60° 22°C 6mm 0.05kPa 1046m 4.8m/s 2.1m/s
14:00
0% 22°C 1.6mm 98% 0cm 52° 22°C 9.3mm 0.05kPa 3061m 4.8m/s 2m/s
15:00
0% 21°C 7.9mm 98% 0cm 42° 21°C 14mm 0.04kPa 3043m 5.1m/s 2.4m/s
16:00
1% 21°C 17mm 99% 0cm 30° 21°C 11mm 0.03kPa 2185m 4.8m/s 2.4m/s
17:00
1% 20°C 7.3mm 98% 0cm 18° 20°C 22mm 0.04kPa 4592m 4.6m/s 2.5m/s
18:00
2% 20°C 4.9mm 98% 0cm 5.5° 20°C 26mm 0.05kPa 8146m 4.1m/s 2.3m/s
19:00 ☾
2% 20°C 2.4mm 98% 0cm -7.1° 20°C 29mm 0.05kPa 7723m 5.3m/s 2.6m/s
20:00 ☾
3% 20°C 0.34mm 97% 0cm -19° 20°C 30mm 0.07kPa 14004m 4.5m/s 2.3m/s
21:00 ☾
3% 20°C 0.45mm 97% 0cm -31° 20°C 30mm 0.07kPa 9172m 3.6m/s 1.8m/s
22:00 ☾
2% 20°C 0.36mm 97% 0cm -41° 20°C 0.69mm 0.07kPa 10343m 3.3m/s 1.9m/s
23:00 ☾
2% 20°C 0.13mm 96% 0cm -48° 20°C 1.1mm 0.1kPa 6675m 5.1m/s 2.4m/s
Thu, Sep 10 Sunrise 05:53 Sunset 18:29
24:00 ☾
1% 19°C 0.06mm 96% 0cm -52° 20°C 1.3mm 0.1kPa 18827m 3.3m/s 2m/s
01:00 ☾
1% 19°C 0.02mm 95% 0cm -50° 20°C 1.3mm 0.11kPa 19192m 2.7m/s 1.8m/s
02:00 ☾
0% 19°C 0mm 95% 0cm -44° 20°C 1.4mm 0.11kPa 24134m 1.9m/s 1.6m/s
03:00 ☾
0% 19°C 0mm 95% 0cm -35° 20°C 1.4mm 0.11kPa 24134m 2.1m/s 1.8m/s
04:00 ☾
0% 19°C 0.01mm 95% 0cm -24° 20°C 0mm 0.11kPa 24135m 2.5m/s 2m/s
05:00 ☾
0% 19°C 0mm 96% 0cm -12° 19°C 0mm 0.09kPa 19398m 2.9m/s 2.1m/s
06:00 ☾
0% 19°C 0mm 96% 0cm 0.76° 19°C 0.06mm 0.09kPa 16838m 2.9m/s 1.9m/s
07:00 ☾
0% 19°C 0.03mm 96% 0cm 13° 20°C 0.31mm 0.09kPa 16598m 2.7m/s 1.5m/s
08:00 ☾
0% 19°C 0.17mm 97% 0cm 25° 20°C 1mm 0.08kPa 9642m 3.8m/s 1.3m/s
09:00
0% 19°C 0.06mm 97% 0cm 37° 20°C 1.6mm 0.07kPa 14475m 2.1m/s 1m/s
10:00
1% 19°C 0mm 96% 0cm 48° 20°C 0.13mm 0.1kPa 24134m 1.9m/s 0.94m/s
11:00
2% 19°C 0.01mm 94% 0cm 57° 20°C 0.13mm 0.14kPa 24135m 2m/s 0.92m/s
12:00
3% 19°C 0.01mm 91% 0cm 62° 21°C 0.25mm 0.23kPa 24134m 3.5m/s 1.4m/s
13:00
2% 19°C 0mm 90% 0cm 60° 21°C 0.31mm 0.25kPa 24135m 3.2m/s 1.5m/s
14:00
2% 19°C 0mm 90% 0cm 52° 21°C 0.31mm 0.26kPa 24134m 2.8m/s 1.4m/s
15:00
1% 19°C 0mm 90% 0cm 42° 21°C 0.38mm 0.26kPa 24134m 2.6m/s 1.5m/s
16:00
1% 20°C 0.03mm 93% 0cm 30° 21°C 0.44mm 0.18kPa 16422m 1.9m/s 1.2m/s
17:00
1% 20°C 0.05mm 96% 0cm 18° 20°C 0.5mm 0.09kPa 8711m 1.3m/s 0.81m/s
18:00
1% 20°C 0.08mm 99% 0cm 5.2° 20°C 0.56mm 0.02kPa 999m 0.61m/s 0.44m/s
19:00 ☾
1% 20°C 0.08mm 99% 0cm -7.4° 20°C 0.65mm 0.02kPa 1148m 0.58m/s 0.47m/s
20:00 ☾
1% 20°C 0.09mm 99% 0cm -19° 20°C 0.73mm 0.02kPa 1296m 0.55m/s 0.49m/s
21:00 ☾
1% 20°C 0.09mm 99% 0cm -31° 20°C 0.81mm 0.02kPa 1445m 0.52m/s 0.52m/s
22:00 ☾
1% 20°C 0.06mm 99% 0cm -41° 20°C 0.63mm 0.02kPa 3477m 0.43m/s 0.45m/s
23:00 ☾
0% 20°C 0.03mm 99% 0cm -48° 20°C 0.44mm 0.02kPa 5510m 0.33m/s 0.38m/s
Fri, Sep 11 Sunrise 05:54 Sunset 18:28
24:00 ☾
0% 20°C 0mm 99% 0cm -52° 20°C 0.25mm 0.02kPa 7543m 0.24m/s 0.31m/s
01:00 ☾
0% 21°C 0.003mm 99% 0cm -50° 21°C 0.27mm 0.03kPa 7651m 0.38m/s 0.39m/s
02:00 ☾
0% 21°C 0.007mm 98% 0cm -44° 21°C 0.29mm 0.04kPa 7759m 0.51m/s 0.47m/s
03:00 ☾
0% 21°C 0.01mm 98% 0cm -35° 21°C 0.31mm 0.05kPa 7867m 0.65m/s 0.55m/s
04:00 ☾
0% 21°C 0.007mm 96% 0cm -24° 22°C 0.35mm 0.1kPa 11132m 1m/s 0.92m/s
05:00 ☾
0% 22°C 0.003mm 95% 0cm -12° 23°C 0.4mm 0.15kPa 14396m 1.4m/s 1.3m/s
06:00 ☾
0% 22°C 0mm 93% 0cm 0.65° 23°C 0.44mm 0.2kPa 17661m 1.7m/s 1.7m/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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