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Rule Fog Hunter

Alkmaar - Fog Hunter - The Netherlands

Alkmaar, North Holland, The Netherlands

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 Spread5.0°C
Visibility24135 (Clear)
Relative Humidity71%
Wind Speed4.1m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Amsterdam

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

The Netherlands' unique below-sea-level geography creates exceptional fog conditions as the polder landscape—land reclaimed from the sea—traps cold, moist air in natural depressions. This creates persistent valley fog and radiation fog that transforms windmills and waterways into ethereal scenes.

Kinderdijk's 19 UNESCO windmills rising from morning mist create one of photography's most iconic Dutch scenes. The flat terrain and extensive water networks mean fog forms readily on calm, clear nights and can persist well into morning. Marken's historic harbor on the Markermeer lake experiences frequent sea fog rolling in from the IJsselmeer.

What makes Dutch fog photography exceptional:

  • Windmill emergence - Historic structures appearing gradually as fog lifts from polder basins
  • Canal diffusion - Amsterdam and Leiden's canals create soft, atmospheric street scenes in fog
  • Flat persistence - Lack of topography means fog lingers longer than in hilly regions
  • Autumn reliability - October-November offer most consistent radiation fog conditions

Best fog occurs on calm, clear nights following daytime warmth—typically spring and autumn. Arrive before sunrise to catch densest conditions. The polders around Kinderdijk, Zaanse Schans windmills north of Amsterdam, and the Alblasserwaard region are prime locations. Fog typically burns off by 10-11 AM as temperatures rise.

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72-hour requirements breakdown

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/Amsterdam
Fog Probability
≥ 60.0%
Wed, Apr 8
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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14:000%
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19:000%
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22:000%
23:000%
Thu, Apr 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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11:000%
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Fri, Apr 10
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
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Sat, Apr 11
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
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20:000%
21:000%
22:000%
23:000%
Sun, Apr 12
24:000%
01:000%
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/Amsterdam
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
Thu, Apr 9 Sunrise 06:57 Sunset 20:29
04:00 ☾
3% 3.2°C 0mm 71% 0cm -23° 8.2°C 0mm 0.32kPa 24135m 8.2m/s 4.1m/s
05:00 ☾
4% 3.2°C 0mm 72% 0cm -17° 7.9°C 0mm 0.3kPa 24135m 7.4m/s 4.1m/s
06:00 ☾
3% 3.3°C 0mm 74% 0cm -8.9° 7.6°C 0mm 0.27kPa 24135m 7.1m/s 3.9m/s
07:00
2% 3.5°C 0mm 75% 0cm 0.17° 7.7°C 0mm 0.26kPa 24134m 6.6m/s 3.8m/s
08:00
1% 4.9°C 0mm 78% 0cm 8.8° 8.5°C 0mm 0.24kPa 24134m 7.6m/s 4m/s
09:00
2% 6.1°C 0mm 75% 0cm 18° 10°C 0mm 0.32kPa 24134m 8.1m/s 4.6m/s
10:00
4% 6.5°C 0mm 68% 0cm 26° 12°C 0mm 0.46kPa 24135m 7.2m/s 5.2m/s
11:00
5% 7.3°C 0mm 62% 0cm 34° 15°C 0mm 0.64kPa 24134m 7m/s 5.5m/s
12:00
4% 7.8°C 0mm 57% 0cm 40° 16°C 0mm 0.81kPa 24135m 7.2m/s 5.4m/s
13:00
4% 8.6°C 0mm 55% 0cm 44° 18°C 0mm 0.91kPa 24135m 7.4m/s 5.2m/s
14:00
3% 9.1°C 0mm 57% 0cm 45° 18°C 0mm 0.86kPa 24135m 8.1m/s 5.8m/s
15:00
5% 10°C 0mm 67% 0cm 42° 16°C 0mm 0.61kPa 19262m 9m/s 6.4m/s
16:00
6% 11°C 0mm 76% 0cm 37° 15°C 0mm 0.4kPa 19153m 9.9m/s 6.5m/s
17:00
8% 11°C 0.01mm 78% 0cm 30° 15°C 0mm 0.38kPa 19119m 9.6m/s 5.9m/s
18:00
5% 10°C 0mm 81% 0cm 22° 13°C 0.19mm 0.29kPa 19236m 9.9m/s 5.5m/s
19:00
3% 10°C 0mm 87% 0cm 13° 12°C 0.25mm 0.19kPa 23507m 8.8m/s 4.2m/s
20:00
0% 10°C 0mm 90% 0cm 3.7° 12°C 0.25mm 0.14kPa 24135m 8.2m/s 3.9m/s
21:00 ☾
0% 9.9°C 0.42mm 92% 0cm -5.2° 11°C 0.19mm 0.1kPa 19421m 7.8m/s 3.9m/s
22:00 ☾
0% 9.5°C 0.83mm 92% 0cm -13° 11°C 0.63mm 0.1kPa 12502m 9.1m/s 4.9m/s
23:00 ☾
0% 7.5°C 0.06mm 91% 0cm -20° 8.9°C 0.81mm 0.1kPa 24134m 13m/s 9.1m/s
Fri, Apr 10 Sunrise 06:57 Sunset 20:29
24:00 ☾
0% 6.5°C 0.01mm 88% 0cm -26° 8.3°C 0.81mm 0.13kPa 24135m 13m/s 7.5m/s
01:00 ☾
0% 6.4°C 0mm 89% 0cm -29° 8.1°C 0.81mm 0.12kPa 24134m 11m/s 6.1m/s
02:00 ☾
0% 6°C 0mm 86% 0cm -29° 8.2°C 0.81mm 0.15kPa 24135m 11m/s 7.3m/s
03:00 ☾
24% 4.9°C 0mm 84% 0cm -27° 7.5°C 0mm 0.17kPa 24134m 13m/s 8m/s
04:00 ☾
48% 4.5°C 0mm 83% 0cm -23° 7.2°C 0mm 0.17kPa 24134m 12m/s 7.9m/s
05:00 ☾
72% 4.1°C 0mm 82% 0cm -16° 6.9°C 0mm 0.18kPa 24135m 12m/s 7.3m/s
06:00 ☾
61% 2.9°C 0mm 78% 0cm -8.6° 6.4°C 0mm 0.21kPa 24134m 11m/s 6.8m/s
07:00
50% 2.5°C 0mm 78% 0cm 0.45° 6.1°C 0mm 0.21kPa 24134m 9.8m/s 6m/s
08:00
39% 3°C 0mm 79% 0cm 9.1° 6.3°C 0mm 0.2kPa 24135m 8.2m/s 5.2m/s
09:00
27% 3.4°C 0mm 77% 0cm 18° 7.1°C 0mm 0.23kPa 24134m 6.6m/s 4.6m/s
10:00
14% 3.2°C 0mm 74% 0cm 27° 7.6°C 0mm 0.28kPa 24134m 5.8m/s 4.8m/s
11:00
2% 3.1°C 0mm 70% 0cm 35° 8.3°C 0mm 0.33kPa 24135m 4m/s 3.7m/s
12:00
2% 2.9°C 0mm 67% 0cm 41° 8.7°C 0mm 0.37kPa 24135m 3.4m/s 3.3m/s
13:00
2% 2.7°C 0mm 64% 0cm 45° 9°C 0mm 0.41kPa 24134m 2.2m/s 2.6m/s
14:00
2% 2.5°C 0mm 62% 0cm 45° 9.4°C 0.06mm 0.44kPa 24134m 1.6m/s 2.5m/s
15:00
14% 2.7°C 0mm 63% 0cm 43° 9.5°C 0mm 0.44kPa 24134m 1.8m/s 2.9m/s
16:00
27% 3°C 0mm 66% 0cm 37° 9°C 0.06mm 0.39kPa 24134m 2m/s 3.1m/s
17:00
39% 2.8°C 0mm 65% 0cm 30° 9.1°C 0.06mm 0.41kPa 24134m 1.5m/s 2.1m/s
18:00
34% 2.9°C 0mm 65% 0cm 22° 9.1°C 0.06mm 0.4kPa 24134m 1.3m/s 1.6m/s
19:00
28% 3.1°C 0mm 68% 0cm 13° 8.7°C 0.06mm 0.36kPa 24135m 2.1m/s 2.2m/s
20:00
23% 3.4°C 0mm 78% 0cm 4° 7.1°C 0.06mm 0.23kPa 24135m 4.3m/s 3.1m/s
21:00 ☾
15% 2.6°C 0mm 82% 0cm -4.9° 5.6°C 0mm 0.17kPa 24135m 5.2m/s 3.4m/s
22:00 ☾
8% 2.3°C 0mm 80% 0cm -13° 5.4°C 0mm 0.18kPa 24134m 5.5m/s 3.1m/s
23:00 ☾
0% 2.2°C 0mm 78% 0cm -20° 5.8°C 0mm 0.2kPa 24135m 7m/s 3.2m/s
Sat, Apr 11 Sunrise 06:54 Sunset 20:30
24:00 ☾
0% 3°C 0mm 78% 0cm -25° 6.6°C 0mm 0.22kPa 24134m 10m/s 4.6m/s
01:00 ☾
0% 2.9°C 0mm 77% 0cm -28° 6.6°C 0mm 0.22kPa 24135m 11m/s 5.4m/s
02:00 ☾
0% 2.5°C 0mm 75% 0cm -29° 6.7°C 0mm 0.25kPa 24134m 12m/s 5.3m/s
03:00 ☾
0% 2.4°C 0mm 76% 0cm -27° 6.4°C 0mm 0.23kPa 24134m 12m/s 4.9m/s
04:00 ☾
0% 2.2°C 0mm 76% 0cm -22° 6.1°C 0mm 0.22kPa 24134m 12m/s 4.9m/s
05:00 ☾
0% 1.8°C 0mm 74% 0cm -16° 6.1°C 0mm 0.24kPa 24135m 13m/s 5.6m/s
06:00 ☾
0% 1.7°C 0mm 73% 0cm -8.2° 6.3°C 0mm 0.26kPa 24135m 14m/s 6.1m/s
07:00
0% 2.1°C 0mm 71% 0cm 0.74° 6.9°C 0mm 0.28kPa 24135m 13m/s 6.3m/s
08:00
0% 3°C 0mm 73% 0cm 9.4° 7.5°C 0mm 0.28kPa 24135m 13m/s 6.2m/s
09:00
1% 5.1°C 0.18mm 80% 0cm 18° 8.3°C 0.5mm 0.21kPa 23198m 14m/s 7.5m/s
10:00
1% 7.2°C 0.35mm 88% 0cm 27° 9.1°C 1mm 0.14kPa 22261m 15m/s 8.9m/s
11:00
2% 9.2°C 0.53mm 96% 0cm 35° 9.9°C 1.5mm 0.05kPa 21324m 16m/s 10m/s
12:00
2% 8.3°C 0.35mm 91% 0cm 41° 9.7°C 1.5mm 0.11kPa 22261m 15m/s 10m/s
13:00
1% 7.5°C 0.18mm 87% 0cm 45° 9.6°C 1.6mm 0.16kPa 23198m 14m/s 9.7m/s
14:00
1% 6.6°C 0mm 82% 0cm 46° 9.4°C 1.6mm 0.21kPa 24135m 13m/s 9.4m/s
15:00
3% 5.6°C 0mm 80% 0cm 43° 8.8°C 1.1mm 0.22kPa 24135m 12m/s 8.2m/s
16:00
4% 4.7°C 0mm 78% 0cm 38° 8.3°C 0.54mm 0.24kPa 24135m 11m/s 7.1m/s
17:00
6% 3.7°C 0mm 76% 0cm 30° 7.7°C 0mm 0.25kPa 24135m 11m/s 5.9m/s
18:00
4% 4°C 0mm 76% 0cm 22° 8°C 0mm 0.26kPa 24135m 11m/s 6.8m/s
19:00
3% 4.2°C 0mm 75% 0cm 13° 8.3°C 0mm 0.27kPa 24135m 11m/s 7.6m/s
20:00
1% 4.4°C 0mm 75% 0cm 4.2° 8.6°C 0mm 0.28kPa 24135m 11m/s 8.4m/s
21:00 ☾
1% 4.5°C 0.007mm 76% 0cm -4.7° 8.6°C 0mm 0.27kPa 24135m 11m/s 8.9m/s
22:00 ☾
0% 4.6°C 0.01mm 76% 0cm -13° 8.5°C 0mm 0.26kPa 24135m 12m/s 9.4m/s
23:00 ☾
0% 4.7°C 0.02mm 77% 0cm -20° 8.5°C 0mm 0.25kPa 24135m 12m/s 9.9m/s
Sun, Apr 12 Sunrise 06:52 Sunset 20:32
24:00 ☾
0% 4.4°C 0.01mm 77% 0cm -25° 8.1°C 0mm 0.25kPa 24135m 12m/s 10m/s
01:00 ☾
0% 4°C 0.007mm 77% 0cm -28° 7.8°C 0mm 0.24kPa 24135m 12m/s 10m/s
02:00 ☾
0% 3.7°C 0mm 77% 0cm -29° 7.4°C 0mm 0.24kPa 24135m 12m/s 10m/s
03:00 ☾
1% 3.7°C 0mm 77% 0cm -26° 7.5°C 0mm 0.24kPa 24135m 12m/s 10m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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