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Rule Fog Hunter

Liesjärvi - Fog Hunter - Southern Finland

Liesjärven Kansallispuisto, Kanta-Häme, Finland

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
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
Fog Probability
0%
Dewpoint Spread8.6°C
Visibility24134 (Clear)
Relative Humidity55%
Wind Speed2.2m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

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

Southern Finland's lake district and boreal forests create ideal conditions for fog photography. The region's 188,000 lakes, countless bogs, and mixed forests generate reliable morning mist from late summer through autumn.

What makes Southern Finland special for fog photography:

  • Lake fog - Large lakes like Vesijärvi and Saimaa produce dramatic ground fog at dawn
  • Bog mist - Torronsuo and other wetlands create ethereal low-lying fog over boardwalks
  • Forest atmosphere - Nuuksio and Repovesi offer misty woodland scenes with cliff viewpoints
  • Accessibility - Most locations within 2 hours of Helsinki

Peak fog season runs from August through October, with the strongest conditions occurring on calm, clear nights when temperatures drop near the dewpoint. Arrive before sunrise for the most dramatic mist.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 86 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 60.0%
Tue, Apr 21
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, Apr 22
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, Apr 23
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%
Fri, Apr 24
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%
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/Helsinki
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, Apr 21 Sunrise 05:48 Sunset 20:59
22:00 ☾
73% -0.2°C 0mm 55% 0cm -6.9° 8.4°C 0mm 0.5kPa 24134m 2.8m/s 2.2m/s
23:00 ☾
77% 0.1°C 0mm 60% 0cm -12° 7.3°C 0mm 0.4kPa 24134m 6m/s 2.4m/s
Wed, Apr 22 Sunrise 05:48 Sunset 20:59
24:00 ☾
81% 0.4°C 0mm 65% 0cm -15° 6.5°C 0mm 0.34kPa 24134m 7.7m/s 2.4m/s
01:00 ☾
82% 0.4°C 0mm 67% 0cm -17° 6°C 0mm 0.3kPa 24134m 5.6m/s 2.2m/s
02:00 ☾
84% 0.1°C 0mm 68% 0cm -17° 5.5°C 0mm 0.29kPa 24135m 5.5m/s 2.2m/s
03:00 ☾
85% -0.4°C 0mm 68% 0cm -15° 5.1°C 0mm 0.28kPa 24134m 5.7m/s 2.3m/s
04:00 ☾
86% -0.9°C 0mm 68% 0cm -11° 4.5°C 0mm 0.27kPa 24135m 6.8m/s 2.4m/s
05:00 ☾
87% -0.6°C 0mm 72% 0cm -5.5° 4°C 0mm 0.23kPa 24134m 9.1m/s 2.7m/s
06:00
88% 0.2°C 0mm 77% 0cm 1.2° 3.8°C 0mm 0.18kPa 24135m 11m/s 3.1m/s
07:00
73% 1.1°C 0mm 77% 0cm 7.9° 4.7°C 0mm 0.19kPa 24134m 12m/s 3.5m/s
08:00
59% 1°C 0mm 69% 0cm 15° 6.3°C 0mm 0.3kPa 24135m 13m/s 4.1m/s
09:00
44% -0.1°C 0mm 60% 0cm 22° 7.1°C 0mm 0.4kPa 24134m 13m/s 4.6m/s
10:00
29% -1.3°C 0mm 52% 0cm 29° 7.8°C 0mm 0.5kPa 24134m 12m/s 5m/s
11:00
15% -2.2°C 0mm 47% 0cm 35° 8.4°C 0mm 0.58kPa 24134m 9.3m/s 5.2m/s
12:00
0% -2.1°C 0mm 44% 0cm 39° 9.4°C 0mm 0.65kPa 24135m 9.1m/s 5.7m/s
13:00
0% -1.5°C 0mm 43% 0cm 41° 11°C 0mm 0.72kPa 24134m 9.6m/s 5.6m/s
14:00
0% -0.8°C 0mm 42% 0cm 41° 12°C 0mm 0.79kPa 24134m 10m/s 6.1m/s
15:00
0% -0.2°C 0mm 42% 0cm 38° 12°C 0mm 0.83kPa 24135m 10m/s 6.6m/s
16:00
0% 0.2°C 0mm 43% 0cm 34° 12°C 0mm 0.82kPa 24135m 10m/s 6.8m/s
17:00
1% 0.9°C 0mm 49% 0cm 28° 11°C 0mm 0.69kPa 24135m 10m/s 6.2m/s
18:00
1% 1.1°C 0mm 51% 0cm 21° 11°C 0mm 0.63kPa 24135m 11m/s 6.3m/s
19:00
1% 0.8°C 0mm 53% 0cm 14° 9.8°C 0mm 0.57kPa 24135m 13m/s 6.1m/s
20:00
0% 0.5°C 0mm 54% 0cm 6.4° 9.3°C 0mm 0.54kPa 24134m 14m/s 5.9m/s
21:00
0% 0°C 0mm 56% 0cm 0.02° 8.2°C 0mm 0.48kPa 24134m 14m/s 6m/s
22:00 ☾
27% -1.5°C 0mm 55% 0cm -6.6° 6.8°C 0mm 0.44kPa 24134m 18m/s 5.9m/s
23:00 ☾
55% -5.1°C 0mm 46% 0cm -12° 5.7°C 0mm 0.5kPa 24134m 19m/s 6.4m/s
Thu, Apr 23 Sunrise 05:45 Sunset 21:02
24:00 ☾
82% -7.4°C 0mm 42% 0cm -15° 4.5°C 0mm 0.49kPa 24135m 19m/s 7.1m/s
01:00 ☾
87% -9.8°C 0mm 39% 0cm -17° 2.6°C 0mm 0.45kPa 24135m 19m/s 7.1m/s
02:00 ☾
91% -9.5°C 0mm 45% 0cm -16° 0.94°C 0mm 0.36kPa 24135m 12m/s 5.7m/s
03:00 ☾
96% -9.4°C 0mm 49% 0cm -14° -0.001°C 0mm 0.31kPa 24134m 12m/s 5.4m/s
04:00 ☾
93% -9.1°C 0mm 52% 0cm -10° -0.53°C 0mm 0.28kPa 24135m 12m/s 5.3m/s
05:00 ☾
89% -9.3°C 0mm 53% 0cm -5.1° -0.98°C 0mm 0.27kPa 24135m 12m/s 5.3m/s
06:00
86% -9.4°C 0mm 54% 0cm 1.5° -1.4°C 0mm 0.25kPa 24135m 12m/s 5.2m/s
07:00
87% -8.9°C 0mm 56% 0cm 8.2° -1.1°C 0mm 0.25kPa 24135m 12m/s 5.4m/s
08:00
88% -8.3°C 0mm 54% 0cm 16° -0.07°C 0mm 0.28kPa 24135m 12m/s 5.5m/s
09:00
89% -9°C 0mm 47% 0cm 23° 1.1°C 0mm 0.35kPa 24135m 12m/s 6m/s
10:00
85% -9.3°C 0mm 41% 0cm 30° 2.6°C 0mm 0.43kPa 24135m 11m/s 6.1m/s
11:00
81% -8.9°C 0mm 38% 0cm 35° 4.1°C 0mm 0.51kPa 24134m 11m/s 6.1m/s
12:00
77% -8.6°C 0mm 36% 0cm 40° 5.4°C 0mm 0.58kPa 24135m 10m/s 5.9m/s
13:00
68% -8.6°C 0mm 33% 0cm 42° 6.5°C 0mm 0.65kPa 24135m 10m/s 5.8m/s
14:00
60% -8.5°C 0mm 31% 0cm 41° 7.3°C 0mm 0.7kPa 24135m 9.8m/s 6m/s
15:00
51% -7.6°C 0mm 32% 0cm 39° 8°C 0mm 0.73kPa 24134m 10m/s 5.9m/s
16:00
42% -6.6°C 0mm 33% 0cm 34° 8.6°C 0mm 0.75kPa 24135m 10m/s 5.7m/s
17:00
34% -5.6°C 0mm 35% 0cm 28° 9°C 0mm 0.75kPa 24135m 10m/s 5.6m/s
18:00
25% -4.9°C 0mm 37% 0cm 21° 8.9°C 0mm 0.71kPa 24134m 9.8m/s 4.9m/s
19:00
22% -4.6°C 0mm 40% 0cm 14° 8.1°C 0mm 0.64kPa 24135m 9.6m/s 4.5m/s
20:00
18% -4.5°C 0mm 44% 0cm 6.7° 7°C 0mm 0.56kPa 24134m 9.2m/s 4.5m/s
21:00
15% -4.4°C 0mm 49% 0cm 0.25° 5.6°C 0mm 0.47kPa 24134m 9.6m/s 4.2m/s
22:00 ☾
14% -4.2°C 0mm 52% 0cm -6.3° 4.9°C 0mm 0.42kPa 24134m 9.8m/s 3.8m/s
23:00 ☾
12% -4.2°C 0mm 53% 0cm -11° 4.6°C 0mm 0.4kPa 24134m 9.2m/s 3.6m/s
Fri, Apr 24 Sunrise 05:42 Sunset 21:04
24:00 ☾
11% -4.4°C 0mm 54% 0cm -15° 4°C 0mm 0.37kPa 24134m 9m/s 3.4m/s
01:00 ☾
10% -4.4°C 0mm 57% 0cm -16° 3.4°C 0mm 0.34kPa 24135m 8.7m/s 3.2m/s
02:00 ☾
9% -4.2°C 0mm 60% 0cm -16° 2.7°C 0mm 0.3kPa 24135m 8.3m/s 2.9m/s
03:00 ☾
8% -3.9°C 0mm 65% 0cm -14° 2°C 0mm 0.25kPa 24135m 8.1m/s 2.7m/s
04:00 ☾
11% -3.8°C 0mm 56% 0cm -10° 4.3°C 0mm 0.37kPa 24135m 6.9m/s 2.8m/s
05:00 ☾
14% -4.3°C 0mm 46% 0cm -4.8° 6.5°C 0mm 0.52kPa 24135m 5.6m/s 2.8m/s
06:00
17% -5.3°C 0mm 36% 0cm 1.8° 8.8°C 0mm 0.72kPa 24135m 4.4m/s 2.8m/s
07:00
18% -5.3°C 0mm 34% 0cm 8.5° 9.6°C 0mm 0.79kPa 24135m 4.2m/s 2.7m/s
08:00
20% -5.5°C 0mm 32% 0cm 16° 10°C 0mm 0.86kPa 24135m 4m/s 2.6m/s
09:00
21% -5.7°C 0mm 30% 0cm 23° 11°C 0mm 0.94kPa 24135m 3.8m/s 2.5m/s
10:00
29% -5.5°C 0mm 30% 0cm 30° 11°C 0mm 0.94kPa 24135m 3.6m/s 2.3m/s
11:00
37% -5.3°C 0mm 30% 0cm 36° 12°C 0mm 0.94kPa 24135m 3.5m/s 2.2m/s
12:00
45% -5.1°C 0mm 31% 0cm 40° 12°C 0mm 0.95kPa 24135m 3.3m/s 2m/s
13:00
43% -4.1°C 0mm 37% 0cm 42° 10°C 0mm 0.78kPa 24135m 2.7m/s 1.9m/s
14:00
42% -3.5°C 0mm 43% 0cm 42° 8.4°C 0mm 0.63kPa 24135m 2.2m/s 1.7m/s
15:00
40% -3.3°C 0mm 49% 0cm 39° 6.8°C 0mm 0.5kPa 24135m 1.6m/s 1.6m/s
16:00
37% -2.7°C 0mm 53% 0cm 34° 6.2°C 0mm 0.45kPa 24135m 3.2m/s 1.8m/s
17:00
34% -2.1°C 0mm 57% 0cm 28° 5.7°C 0mm 0.39kPa 24135m 4.7m/s 2m/s
18:00
31% -1.7°C 0mm 61% 0cm 21° 5.2°C 0mm 0.34kPa 24135m 6.2m/s 2.2m/s
19:00
29% -1.6°C 0mm 62% 0cm 14° 5°C 0mm 0.33kPa 24135m 5.8m/s 2.1m/s
20:00
27% -1.6°C 0mm 64% 0cm 7° 4.7°C 0mm 0.31kPa 24135m 5.4m/s 2m/s
21:00
25% -1.5°C 0mm 65% 0cm 0.48° 4.5°C 0mm 0.29kPa 24135m 5m/s 1.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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