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Rule Fog Hunter

Olympic Rainforest - Fog Hunter - Pacific Northwest

Forks, Washington, United States

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 · ≥ 75.0%

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 Spread0.7°C
Visibility9243 (Moderate)
Relative Humidity96%
Wind Speed2.8m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Los_Angeles

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

This forecast tracks the conditions that create the Pacific Northwest's legendary atmospheric photography. We combine fog probability, dewpoint spread, visibility, and wind data to predict when and where fog will form.

The Pacific Northwest's unique geography—where cold ocean currents meet temperate rainforests and volcanic peaks—creates fog conditions unmatched anywhere in North America. From the Hoh Rainforest's ethereal mist to the Columbia River Gorge's valley fog, this region offers year-round fog photography opportunities.

What makes the Pacific Northwest special for fog photography:

  • Marine influence - Cold Pacific currents generate coastal fog that rolls inland through river valleys
  • Rainforest atmosphere - Olympic's temperate rainforest creates perpetual mist and filtered light
  • Temperature inversions - Mountain valleys trap fog below while peaks remain clear
  • Varied terrain - Photograph fog against waterfalls, old-growth forests, sea stacks, and volcanic peaks

Peak fog season runs from late summer through fall, when temperature differentials between land and sea are greatest. Morning fog often burns off by midday, so arrive before sunrise for the most dramatic conditions. The Columbia River Gorge is particularly reliable for valley fog, while coastal locations like Cannon Beach offer fog throughout the year.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 87 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Los_Angeles
Fog Probability
≥ 75.0%
Thu, May 14
21:000%
22:000%
23:000%
Fri, May 15
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%
Sat, May 16
24:0030%
01:000%
02:000%
03:000%
04:000%
05:000%
06:0055%
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%
Sun, May 17
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%
Mon, May 18
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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
America/Los_Angeles
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
Fri, May 15 Sunrise 05:39 Sunset 20:49
13:00
0% 6.8°C 2mm 96% 0cm 61° 7.5°C 3.5mm 0.04kPa 9243m 6.6m/s 2.8m/s
14:00
0% 7°C 2.4mm 97% 0cm 60° 7.6°C 5.4mm 0.04kPa 5632m 7.5m/s 3.5m/s
15:00
0% 7°C 0.14mm 95% 0cm 54° 7.8°C 7mm 0.06kPa 15157m 6.4m/s 2.7m/s
16:00
0% 7.1°C 0.01mm 93% 0cm 46° 8.1°C 7.9mm 0.08kPa 8256m 4.8m/s 2.1m/s
17:00 ☾
0% 7.5°C 0mm 89% 0cm 36° 9.2°C 8.8mm 0.13kPa 7285m 4.1m/s 2.3m/s
18:00 ☾
2% 7.5°C 0mm 90% 0cm 26° 9.1°C 0.81mm 0.11kPa 8912m 4.1m/s 2.1m/s
19:00 ☾
3% 7.5°C 0mm 91% 0cm 16° 8.8°C 1.5mm 0.1kPa 11369m 3.7m/s 1.7m/s
20:00 ☾
5% 6.6°C 0mm 93% 0cm 6.8° 7.7°C 2.1mm 0.08kPa 12248m 2.1m/s 1.4m/s
21:00 ☾
4% 5.4°C 0mm 95% 0cm -2.1° 6.2°C 2.8mm 0.05kPa 12555m 1.3m/s 1m/s
22:00 ☾
3% 5.1°C 0mm 96% 0cm -10° 5.8°C 3.6mm 0.04kPa 12315m 1.3m/s 1.2m/s
23:00 ☾
2% 5.6°C 0.16mm 96% 0cm -17° 6.2°C 4.3mm 0.04kPa 12037m 1.5m/s 1.2m/s
Sat, May 16 Sunrise 05:37 Sunset 20:50
24:00 ☾
2% 5.9°C 0.07mm 96% 0cm -21° 6.5°C 0.81mm 0.04kPa 20855m 1.6m/s 1.1m/s
01:00 ☾
1% 5.8°C 0mm 96% 0cm -23° 6.4°C 1.3mm 0.04kPa 22052m 2.3m/s 1.3m/s
02:00 ☾
1% 5.4°C 0mm 96% 0cm -22° 6.1°C 1.6mm 0.04kPa 24134m 2.1m/s 1.3m/s
03:00 ☾
1% 5.2°C 0mm 96% 0cm -19° 5.9°C 1.9mm 0.04kPa 24134m 2m/s 1.4m/s
04:00 ☾
2% 4.8°C 0mm 96% 0cm -13° 5.4°C 2mm 0.03kPa 24135m 2.3m/s 1.7m/s
05:00 ☾
2% 4.1°C 0mm 96% 0cm -6° 4.6°C 2.1mm 0.03kPa 24134m 1.3m/s 1.1m/s
06:00
4% 3.4°C 0mm 96% 0cm 2.7° 4.1°C 0.06mm 0.04kPa 24135m 0.83m/s 0.36m/s
07:00
7% 5°C 0mm 94% 0cm 12° 5.8°C 0.06mm 0.05kPa 24134m 1.3m/s 0.24m/s
08:00
9% 6.2°C 0mm 90% 0cm 22° 7.8°C 0.19mm 0.11kPa 24135m 2.4m/s 0.49m/s
09:00
9% 6.9°C 0mm 89% 0cm 32° 8.6°C 0.63mm 0.12kPa 11629m 5.8m/s 2.6m/s
10:00
10% 7.4°C 0mm 88% 0cm 42° 9.2°C 1.1mm 0.14kPa 14895m 6.5m/s 4m/s
11:00
10% 7.1°C 0mm 81% 0cm 51° 10°C 1.5mm 0.24kPa 16758m 7.1m/s 4.9m/s
12:00
20% 6.2°C 0mm 73% 0cm 58° 11°C 0.38mm 0.35kPa 13549m 7.3m/s 5.5m/s
13:00
29% 4.7°C 0mm 63% 0cm 61° 12°C 0.69mm 0.5kPa 24134m 7m/s 5.6m/s
14:00
39% 3.7°C 0mm 56% 0cm 60° 12°C 0.75mm 0.61kPa 24134m 7m/s 5.7m/s
15:00
37% 3.6°C 0mm 56% 0cm 54° 12°C 0.81mm 0.63kPa 24134m 7.2m/s 5.8m/s
16:00
36% 3.8°C 0mm 59% 0cm 46° 12°C 0.88mm 0.57kPa 21495m 7.2m/s 5.9m/s
17:00 ☾
34% 4.2°C 0.01mm 62% 0cm 36° 11°C 1mm 0.5kPa 24135m 7m/s 5.6m/s
18:00 ☾
31% 4.8°C 0mm 69% 0cm 27° 10°C 0.13mm 0.38kPa 21321m 7m/s 5.4m/s
19:00 ☾
28% 5.2°C 0mm 75% 0cm 17° 9.4°C 0.31mm 0.29kPa 23370m 6.7m/s 4.4m/s
20:00 ☾
25% 4.7°C 0mm 77% 0cm 7° 8.5°C 0.44mm 0.25kPa 24134m 7.3m/s 3.8m/s
21:00 ☾
23% 4.1°C 0mm 85% 0cm -1.9° 6.5°C 0.5mm 0.15kPa 24134m 6.2m/s 2.5m/s
22:00 ☾
22% 3.8°C 0mm 88% 0cm -9.9° 5.6°C 0.5mm 0.11kPa 24135m 3.7m/s 1.6m/s
23:00 ☾
20% 3.6°C 0mm 90% 0cm -16° 5.1°C 0.56mm 0.08kPa 24135m 2.9m/s 1.3m/s
Sun, May 17 Sunrise 05:36 Sunset 20:52
24:00 ☾
15% 3.4°C 0mm 90% 0cm -21° 4.8°C 0mm 0.08kPa 24134m 2.2m/s 0.96m/s
01:00 ☾
10% 3.2°C 0mm 90% 0cm -23° 4.7°C 0mm 0.08kPa 24135m 2m/s 1.1m/s
02:00 ☾
5% 3.2°C 0mm 89% 0cm -22° 4.7°C 0.06mm 0.09kPa 24135m 1.7m/s 0.9m/s
03:00 ☾
5% 3°C 0mm 90% 0cm -19° 4.6°C 0.06mm 0.09kPa 24134m 1.6m/s 0.68m/s
04:00 ☾
6% 3.2°C 0mm 88% 0cm -13° 5.1°C 0.06mm 0.11kPa 24134m 1.6m/s 0.76m/s
05:00 ☾
6% 3.5°C 0mm 82% 0cm -5.8° 6.4°C 0.06mm 0.17kPa 24134m 1.6m/s 0.79m/s
06:00
12% 3.5°C 0mm 80% 0cm 2.9° 6.8°C 0mm 0.2kPa 24134m 1.1m/s 0.52m/s
07:00
17% 4.1°C 0mm 76% 0cm 12° 8.1°C 0mm 0.26kPa 24135m 1.2m/s 0.52m/s
08:00
23% 3.7°C 0mm 68% 0cm 22° 9.4°C 0mm 0.38kPa 24134m 1.8m/s 0.94m/s
09:00
21% 3.1°C 0mm 59% 0cm 32° 11°C 0mm 0.52kPa 24135m 1.7m/s 1.7m/s
10:00
20% 3.4°C 0mm 55% 0cm 42° 12°C 0mm 0.63kPa 24134m 1.9m/s 2.4m/s
11:00
18% 3.6°C 0mm 54% 0cm 51° 13°C 0mm 0.67kPa 24135m 2.3m/s 3.1m/s
12:00
16% 3.8°C 0mm 55% 0cm 58° 13°C 0mm 0.66kPa 24135m 3m/s 4m/s
13:00
14% 3.9°C 0mm 56% 0cm 61° 12°C 0mm 0.63kPa 24134m 2.9m/s 4m/s
14:00
12% 4.2°C 0mm 53% 0cm 60° 13°C 0mm 0.72kPa 24135m 2.5m/s 4m/s
15:00
12% 4.6°C 0mm 55% 0cm 54° 13°C 0mm 0.69kPa 24135m 2.7m/s 4.2m/s
16:00
11% 4.6°C 0mm 58% 0cm 46° 13°C 0mm 0.62kPa 24134m 3.1m/s 4.1m/s
17:00 ☾
11% 4.6°C 0mm 60% 0cm 37° 12°C 0mm 0.56kPa 24135m 3m/s 3.5m/s
18:00 ☾
8% 5.1°C 0mm 71% 0cm 27° 10°C 0mm 0.36kPa 24135m 2.5m/s 2.6m/s
19:00 ☾
4% 5.3°C 0mm 82% 0cm 17° 8.3°C 0mm 0.2kPa 24135m 1.9m/s 1.7m/s
20:00 ☾
1% 5.2°C 0mm 92% 0cm 7.2° 6.4°C 0mm 0.07kPa 24135m 1.3m/s 0.72m/s
21:00 ☾
1% 4.8°C 0mm 93% 0cm -1.7° 5.9°C 0mm 0.07kPa 24135m 1.2m/s 0.72m/s
22:00 ☾
0% 4.4°C 0mm 93% 0cm -9.7° 5.4°C 0mm 0.06kPa 24135m 1.1m/s 0.71m/s
23:00 ☾
0% 3.9°C 0mm 93% 0cm -16° 4.9°C 0mm 0.06kPa 24135m 1m/s 0.71m/s
Mon, May 18 Sunrise 05:35 Sunset 20:53
24:00 ☾
0% 4.4°C 0mm 86% 0cm -20° 6.5°C 0mm 0.13kPa 24135m 0.97m/s 0.58m/s
01:00 ☾
1% 4.7°C 0mm 79% 0cm -22° 8.1°C 0mm 0.23kPa 24135m 0.9m/s 0.44m/s
02:00 ☾
1% 4.8°C 0mm 72% 0cm -22° 9.6°C 0mm 0.34kPa 24135m 0.83m/s 0.31m/s
03:00 ☾
1% 5.4°C 0mm 69% 0cm -18° 11°C 0mm 0.4kPa 24135m 1.6m/s 1.1m/s
04:00 ☾
0% 5.9°C 0mm 67% 0cm -13° 12°C 0mm 0.46kPa 24135m 2.3m/s 1.9m/s
05:00 ☾
0% 6.3°C 0mm 64% 0cm -5.6° 13°C 0mm 0.53kPa 24135m 3m/s 2.7m/s
06:00
1% 7.5°C 0.25mm 74% 0cm 3.1° 12°C 0.23mm 0.36kPa 20101m 3m/s 2.3m/s
07:00
1% 8.4°C 0.49mm 84% 0cm 12° 11°C 0.46mm 0.2kPa 16067m 3m/s 1.9m/s
08:00
2% 9°C 0.74mm 95% 0cm 22° 9.9°C 0.69mm 0.07kPa 12033m 2.9m/s 1.5m/s
09:00
2% 9.1°C 0.55mm 96% 0cm 32° 9.8°C 1.3mm 0.05kPa 16067m 3.2m/s 1.6m/s
10:00
1% 9.3°C 0.36mm 97% 0cm 42° 9.7°C 2mm 0.03kPa 20101m 3.4m/s 1.7m/s
11:00
1% 9.4°C 0.17mm 98% 0cm 51° 9.6°C 2.6mm 0.02kPa 24135m 3.6m/s 1.8m/s
12:00
3% 9.5°C 0.16mm 99% 0cm 58° 9.7°C 2.1mm 0.02kPa 16739m 2.9m/s 1.4m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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