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 4 upcoming opportunity windows in the next 10 days.

More Fog Hunter in Pacific Northwest

Create your own alerts

Rule Fog Hunter

Columbia River Gorge - Fog Hunter - Pacific Northwest

Cascade Locks, Oregon, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

45%

Dewpoint Spread0.3°C

Visibility1563 (Mist/Haze)

Relative Humidity98%

Wind Speed3.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Los_Angeles

Next opportunity

Dense Fog (lingering)

Columbia River Gorge

Fri, Mar 6 · 11:00–12:00 · 1h window

Medium confidence

68%

🌫️Fog Probability95.6%

Dewpoint Spread: 0.2°C

Visibility: 197 (Dense fog)

Relative Humidity: 99%

Wind Speed: 1.8m/s (calm conditions)

Dense Fog (lingering)

Columbia River Gorge

Fri, Mar 6 · 17:00–23:00

🌫️Fog Probability:100%

High

Dense Fog (lingering)

Columbia River Gorge

Sat, Mar 7 · 13:00–14:00

🌫️Fog Probability:95.6%

Medium

Dense Fog (lingering)

Columbia River Gorge

Sat, Mar 7 · 18:00–21:00

🌫️Fog Probability:100%

Medium

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.

Create your own Fog Hunter alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour

8matching hours in the next 92 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time America/Los_Angeles	Fog Probability ≥ 85.0%	Dewpoint Spread ≤ 2.0°C	Visibility ≤ 3000.0m	Wind Speed ≤ 2.0m/s
Tue, Mar 3
20:00	35%	0.2°C	20730m	1.4m/s
21:00	35%	0.2°C	23409m	1.4m/s
22:00	35%	0.2°C	24134m	1.4m/s
23:00	43%	0.1°C	9296m	1.3m/s
Wed, Mar 4
24:00	35%	0.3°C	22836m	0.97m/s
01:00	33%	0.5°C	18043m	0.82m/s
02:00	0%	0.2°C	5415m	0.91m/s
03:00	0%	0.1°C	618m	1.1m/s
04:00	0%	0.1°C	209m	1.2m/s
05:00	0%	0.1°C	935m	1.5m/s
06:00	0%	0.5°C	10303m	2.7m/s
07:00	0%	0.4°C	8701m	1.9m/s
08:00	0%	0.6°C	8709m	2.7m/s
09:00	0%	0.6°C	7274m	2.3m/s
10:00	0%	0.5°C	7198m	1.9m/s
11:00	0%	0.3°C	481m	1.9m/s
12:00	0%	0.3°C	141m	3.6m/s
13:00	0%	0.4°C	120m	5.2m/s
14:00	0%	0.4°C	173m	4.1m/s
15:00	0%	0.7°C	21076m	3.4m/s
16:00	0%	0.7°C	19228m	3.3m/s
17:00	45%	0.3°C	1563m	3m/s
18:00	28%	0.4°C	21993m	2.9m/s
19:00	60%	0.2°C	486m	2.9m/s
20:00	52%	0.3°C	98m	3.3m/s
21:00	48%	0.6°C	104m	3.3m/s
22:00	32%	0.8°C	7264m	3.4m/s
23:00	40%	0.5°C	5059m	3.1m/s
Thu, Mar 5
24:00	50%	0.3°C	209m	3.7m/s
01:00	0%	1°C	20676m	3.6m/s
02:00	0%	0.7°C	6130m	3.7m/s
03:00	0%	0.9°C	6329m	4.7m/s
04:00	0%	0.8°C	8453m	4.9m/s
05:00	45%	0.8°C	6457m	5.2m/s
06:00	27%	1°C	5905m	4.7m/s
07:00	24%	0.7°C	5035m	4.2m/s
08:00	31%	0.4°C	1507m	4.1m/s
09:00	46%	0.4°C	99m	3.6m/s
10:00	0%	0.4°C	51m	3.2m/s
11:00	43%	0.2°C	38m	2.9m/s
12:00	0%	0.2°C	32m	2.7m/s
13:00	0%	0.1°C	29m	2.6m/s
14:00	0%	0.1°C	42m	2.5m/s
15:00	0%	0.2°C	36m	2.7m/s
16:00	0%	0.2°C	35m	2.7m/s
17:00	100%	0.2°C	38m	2.8m/s
18:00	100%	0.2°C	72m	2.7m/s
19:00	51%	0.2°C	129m	2.7m/s
20:00	60%	0.2°C	114m	3m/s
21:00	60%	0.2°C	194m	3m/s
22:00	63%	0.3°C	79m	3m/s
23:00	100%	0.3°C	93m	2.9m/s
Fri, Mar 6
24:00	63%	0.2°C	86m	2.2m/s
01:00	0%	0.2°C	94m	2.4m/s
02:00	0%	0.2°C	68m	2.3m/s
03:00	0%	0.2°C	92m	1.9m/s
04:00	0%	0.2°C	125m	1.6m/s
05:00	60%	0.2°C	157m	1.3m/s
06:00	60%	0.2°C	180m	1.4m/s
07:00	0%	0.1°C	183m	1.5m/s
08:00	0%	0.2°C	196m	1.3m/s
09:00	0%	0.2°C	215m	1.4m/s
10:00	0%	0.1°C	210m	1.5m/s
11:00	96%	0.2°C	197m	1.8m/s
12:00	48%	0.2°C	169m	1.7m/s
13:00	48%	0.2°C	162m	1.7m/s
14:00	48%	0.2°C	153m	1.5m/s
15:00	48%	0.1°C	140m	1.5m/s
16:00	53%	0.1°C	125m	1.4m/s
17:00	100%	0.1°C	113m	1.2m/s
18:00	100%	0.1°C	111m	1.1m/s
19:00	100%	0.1°C	112m	1.1m/s
20:00	100%	0.1°C	115m	1m/s
21:00	100%	0.1°C	119m	0.93m/s
22:00	100%	0.1°C	122m	0.95m/s
23:00	60%	0.1°C	143m	1m/s
Sat, Mar 7
24:00	60%	0.1°C	164m	1.1m/s
01:00	60%	0°C	185m	1.2m/s
02:00	60%	0°C	175m	1.2m/s
03:00	60%	0°C	165m	1.2m/s
04:00	60%	0.1°C	155m	1.2m/s
05:00	60%	0.1°C	155m	1.3m/s
06:00	60%	0°C	155m	1.3m/s
07:00	60%	0°C	155m	1.4m/s
08:00	60%	0°C	142m	1.4m/s
09:00	53%	0°C	129m	1.4m/s
10:00	48%	0°C	116m	1.4m/s
11:00	48%	0°C	175m	1.3m/s
12:00	48%	0.1°C	235m	1.3m/s
13:00	96%	0°C	295m	1.2m/s
14:00	48%	0.1°C	225m	1.4m/s
15:00	48%	0.1°C	156m	1.5m/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 America/Los_Angeles	Dew Point °C	Rainfall mm	Relative Humidity %	Snowfall cm	Temperature °C	Total Precipitation mm	Vapor Pressure Deficit kPa	Wind Gusts m/s
Wed, Mar 4 Sunrise 06:38 Sunset 17:58
17:00 ☾	4.1°C	0.07mm	98%	0cm	4.4°C	0.31mm	0.02kPa	8.3m/s
18:00 ☾	3.9°C	0.01mm	97%	0cm	4.3°C	0.44mm	0.02kPa	8.1m/s
19:00 ☾	3.9°C	0.02mm	98%	0cm	4.1°C	0.5mm	0.02kPa	7.9m/s
20:00 ☾	4°C	0.01mm	98%	0cm	4.3°C	0.5mm	0.02kPa	8.3m/s
21:00 ☾	3.8°C	0.01mm	96%	0cm	4.4°C	0.56mm	0.03kPa	8.8m/s
22:00 ☾	3.5°C	0.26mm	94%	0cm	4.3°C	0.69mm	0.05kPa	8.7m/s
23:00 ☾	3.7°C	0.49mm	96%	0cm	4.2°C	0.44mm	0.03kPa	8m/s
Thu, Mar 5 Sunrise 06:38 Sunset 17:58
24:00 ☾	3.8°C	0.22mm	98%	0cm	4.1°C	0.81mm	0.02kPa	9.7m/s
01:00 ☾	2.7°C	0.01mm	94%	0cm	3.7°C	1.1mm	0.05kPa	9.6m/s
02:00 ☾	2.5°C	0.01mm	95%	0cm	3.2°C	1.2mm	0.04kPa	9.8m/s
03:00 ☾	2°C	0mm	94%	0cm	2.9°C	1.3mm	0.05kPa	11m/s
04:00 ☾	1.9°C	0.01mm	95%	0cm	2.7°C	1.4mm	0.04kPa	11m/s
05:00 ☾	1.7°C	0.02mm	94%	0cm	2.5°C	0.19mm	0.04kPa	10m/s
06:00 ☾	1.1°C	0.01mm	93%	0.13cm	2.1°C	0.31mm	0.05kPa	9.5m/s
07:00 ☾	1.1°C	0.04mm	95%	0.14cm	1.8°C	0.44mm	0.03kPa	11m/s
08:00 ☾	1.4°C	0.03mm	97%	0.16cm	1.8°C	0.63mm	0.02kPa	11m/s
09:00 ☾	1.8°C	0.16mm	97%	0.31cm	2.2°C	0.81mm	0.02kPa	9.5m/s
10:00 ☾	1.8°C	0.59mm	98%	0.67cm	2.2°C	1.3mm	0.02kPa	8.7m/s
11:00 ☾	2.3°C	0.6mm	99%	0.7cm	2.5°C	0.69mm	0.01kPa	8.9m/s
12:00 ☾	2.5°C	0.56mm	99%	0.62cm	2.7°C	1.3mm	0.01kPa	8.4m/s
13:00 ☾	2.5°C	0.58mm	99%	0.63cm	2.6°C	2mm	0.01kPa	8.4m/s
14:00 ☾	2.5°C	0.33mm	99%	0cm	2.6°C	2.4mm	0.01kPa	7.8m/s
15:00 ☾	2.5°C	0.23mm	98%	0cm	2.7°C	2.8mm	0.01kPa	8.4m/s
16:00 ☾	2.6°C	0.05mm	98%	0cm	2.8°C	2.9mm	0.01kPa	8m/s
17:00 ☾	2.7°C	0.04mm	98%	0cm	2.9°C	0.06mm	0.01kPa	8.3m/s
18:00 ☾	2.7°C	0.01mm	98%	0cm	2.9°C	0.19mm	0.01kPa	7.2m/s
19:00 ☾	2.8°C	0.01mm	99%	0cm	3°C	0.25mm	0.01kPa	7.8m/s
20:00 ☾	2.8°C	0.01mm	98%	0cm	3°C	0.31mm	0.01kPa	7.6m/s
21:00 ☾	2.8°C	0mm	98%	0cm	3°C	0.44mm	0.01kPa	7.5m/s
22:00 ☾	2.8°C	0mm	98%	0cm	3.1°C	0.5mm	0.01kPa	7.5m/s
23:00 ☾	2.8°C	0.07mm	98%	0cm	3.1°C	0.06mm	0.02kPa	7.3m/s
Fri, Mar 6 Sunrise 06:36 Sunset 17:59
24:00 ☾	2.9°C	0.48mm	99%	0cm	3.1°C	0.38mm	0.01kPa	6.1m/s
01:00 ☾	2.8°C	0.84mm	98%	0cm	3°C	1.3mm	0.01kPa	5.5m/s
02:00 ☾	2.6°C	0.56mm	99%	0cm	2.8°C	1.9mm	0.01kPa	5.9m/s
03:00 ☾	2.7°C	0.46mm	99%	0cm	2.9°C	2.4mm	0.01kPa	6.4m/s
04:00 ☾	2.8°C	0.35mm	99%	0cm	3°C	2.8mm	0.01kPa	6.1m/s
05:00 ☾	2.9°C	0.49mm	99%	0cm	3.1°C	0.44mm	0.01kPa	3.9m/s
06:00 ☾	3°C	0.32mm	99%	0cm	3.2°C	0.88mm	0.01kPa	3.9m/s
07:00 ☾	3.1°C	0.24mm	99%	0cm	3.2°C	1.2mm	0.01kPa	4.4m/s
08:00 ☾	3.2°C	0.23mm	99%	0cm	3.4°C	1.4mm	0.01kPa	2.8m/s
09:00 ☾	3.3°C	0.21mm	99%	0cm	3.5°C	1.6mm	0.01kPa	2.7m/s
10:00 ☾	3.5°C	0.22mm	99%	0cm	3.6°C	1.9mm	0.01kPa	2.9m/s
11:00 ☾	3.6°C	0.13mm	99%	0cm	3.8°C	0.19mm	0.01kPa	3.5m/s
12:00 ☾	3.8°C	0.14mm	99%	0cm	4°C	0.31mm	0.01kPa	3.3m/s
13:00 ☾	3.8°C	0.13mm	99%	0cm	4°C	0.44mm	0.01kPa	3.3m/s
14:00 ☾	3.9°C	0.06mm	99%	0cm	4.1°C	0.56mm	0.01kPa	3.1m/s
15:00 ☾	4°C	0.05mm	99%	0cm	4.1°C	0.63mm	0.01kPa	3.1m/s
16:00 ☾	4°C	0.05mm	99%	0cm	4.1°C	0.69mm	0.01kPa	2.9m/s
17:00 ☾	4°C	0.04mm	99%	0cm	4.1°C	0.06mm	0.01kPa	2.7m/s
18:00 ☾	4°C	0.02mm	99%	0cm	4.1°C	0.06mm	0.01kPa	2.4m/s
19:00 ☾	4.1°C	0.02mm	99%	0cm	4.2°C	0.13mm	0.01kPa	2.3m/s
20:00 ☾	4.2°C	0.01mm	99%	0cm	4.3°C	0.13mm	0.01kPa	2m/s
21:00 ☾	4.3°C	0.01mm	99%	0cm	4.4°C	0.13mm	0.01kPa	1.7m/s
22:00 ☾	4.4°C	0mm	99%	0cm	4.5°C	0.13mm	0.01kPa	1.7m/s
23:00 ☾	4.4°C	0.06mm	99%	0cm	4.5°C	0.23mm	0kPa	1.9m/s
Sat, Mar 7 Sunrise 06:35 Sunset 18:01
24:00 ☾	4.4°C	0.12mm	100%	0cm	4.5°C	0.33mm	0kPa	2m/s
01:00 ☾	4.5°C	0.18mm	100%	0cm	4.5°C	0.44mm	0kPa	2.1m/s
02:00 ☾	4.7°C	0.17mm	100%	0cm	4.7°C	0.56mm	0kPa	2.4m/s
03:00 ☾	4.9°C	0.15mm	100%	0cm	4.9°C	0.69mm	0kPa	2.6m/s
04:00 ☾	5°C	0.14mm	100%	0cm	5.1°C	0.81mm	0kPa	2.9m/s
05:00 ☾	5.2°C	0.15mm	100%	0cm	5.3°C	0.71mm	0kPa	3.2m/s
06:00 ☾	5.4°C	0.17mm	100%	0cm	5.4°C	0.6mm	0kPa	3.4m/s
07:00 ☾	5.6°C	0.18mm	100%	0cm	5.6°C	0.5mm	0kPa	3.7m/s
08:00 ☾	5.6°C	0.16mm	100%	0cm	5.6°C	0.65mm	0kPa	4.2m/s
09:00 ☾	5.7°C	0.14mm	100%	0cm	5.7°C	0.79mm	0kPa	4.7m/s
10:00 ☾	5.7°C	0.12mm	100%	0cm	5.7°C	0.94mm	0kPa	5.2m/s
11:00 ☾	5.8°C	0.1mm	100%	0cm	5.8°C	0.69mm	0kPa	4.5m/s
12:00 ☾	5.8°C	0.07mm	100%	0cm	5.9°C	0.44mm	0kPa	3.9m/s
13:00 ☾	5.9°C	0.05mm	100%	0cm	5.9°C	0.19mm	0kPa	3.2m/s
14:00 ☾	5.9°C	0.05mm	100%	0cm	6°C	0.23mm	0kPa	3.9m/s
15:00 ☾	6°C	0.04mm	100%	0cm	6.1°C	0.27mm	0kPa	4.7m/s
16:00 ☾	6.1°C	0.04mm	100%	0cm	6.1°C	0.31mm	0kPa	5.4m/s

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

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account