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Rule Fog Hunter

Franconia - Fog Hunter - New England, USA

Franconia, New Hampshire, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread2.9°C
Visibility11464 (Clear)
Relative Humidity81%
Wind Speed0.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York
fog weather icon
Next opportunity
Dense Fog (lingering)
Franconia
Tue, Feb 24 · 02:00–05:00 · 3h window
Medium confidence
65%
🌫️Fog Probability99.2-100%
Dewpoint Spread: 0.6°C
Visibility: 1424 (Mist/Haze)
Relative Humidity: 95%
Wind Speed: 1.8m/s (calm conditions)
fog weather icon
Dense Fog (lingering)
Franconia
Sat, Feb 28 · 13:00–16:00
🌫️Fog Probability:95.6-100%
Medium
fog weather icon
Dense Fog (lingering) at Sunset
Franconia
Sat, Feb 28 · 16:00–18:00
🌫️Fog Probability:100%
Medium
fog weather icon
Dense Fog (lingering) at Dusk
Franconia
Sat, Feb 28 · 18:00–19:00
🌫️Fog Probability:100%
Medium
fog weather icon
Dense Fog (lingering)
Franconia
Sat, Feb 28 · 19:00–20:00
🌫️Fog Probability:100%
Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the maritime fog and mountain mist that define New England's atmospheric photography. We combine ocean temperature, dewpoint, and topography to predict when coastal fog banks and mountain valley mist will create moody, quintessentially New England conditions.

New England sits where cold Atlantic waters meet the North American continent, creating persistent fog conditions especially during autumn. The region's mountains—from the White Mountains of New Hampshire to the Green Mountains of Vermont—also generate valley fog that transforms familiar scenes into ethereal compositions.

What makes New England fog photography exceptional:

  • Maritime fog - Cold Atlantic waters generate thick fog banks that roll inland, especially in Maine and coastal Massachusetts
  • White Mountains valleys - Notches and valleys trap morning mist that burns off by mid-morning, creating dramatic reveal moments
  • Covered bridge fog - Vermont and New Hampshire's iconic covered bridges emerge from fog like scenes from another century
  • Acadia coastal mist - Rocky Maine coast where fog meets granite cliffs and crashing waves

Best conditions occur September through October when warm land meets cooling air. Coastal fog can persist all day, while mountain valley fog typically burns off by late morning. Classic locations include Franconia Notch, Smugglers' Notch, and Mount Desert Island.

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72-hour requirements breakdown

What passed or failed, hour by hour
3matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sat, Feb 21
14:0042%1.1°C899m1.9m/s
15:0048%1°C591m2.1m/s
16:0042%1.2°C2325m1.9m/s
17:0046%0.7°C3703m1.3m/s
18:0036%0.6°C13006m0.74m/s
19:0033%0.5°C19171m0.78m/s
20:0060%0.7°C20038m1.8m/s
21:0064%0.6°C15673m1.7m/s
22:0067%0.4°C19226m1.5m/s
23:0083%0.4°C9075m1.5m/s
Sun, Feb 22
24:0067%0.3°C17142m1.5m/s
01:0083%0.4°C5424m1.5m/s
02:0086%0.2°C5547m1.4m/s
03:0086%0.2°C6261m1.3m/s
04:0083%0.3°C6877m1.4m/s
05:0083%0.4°C8770m1.4m/s
06:0067%0.5°C20059m1.2m/s
07:0067%0.5°C22902m1.6m/s
08:000%1.3°C24135m0.57m/s
09:000%2.1°C24135m0.45m/s
10:000%2.4°C24135m0.47m/s
11:000%2.4°C24135m0.41m/s
12:000%2.6°C24135m0.55m/s
13:000%2.7°C11953m0.62m/s
14:000%2.9°C11464m0.73m/s
15:000%3.1°C23566m1.3m/s
16:000%2.9°C19990m0.04m/s
17:0060%0.9°C20245m0.03m/s
18:0064%0.7°C20033m1.5m/s
19:0060%0.7°C19839m1.8m/s
20:0060%0.7°C22803m1.8m/s
21:0060%0.7°C21625m1.8m/s
22:0064%0.7°C20862m1.6m/s
23:0060%0.7°C22345m1.5m/s
Mon, Feb 23
24:0064%0.6°C21615m1.1m/s
01:0064%0.7°C24003m0.72m/s
02:0060%0.7°C22534m1.5m/s
03:0067%0.4°C22879m0.8m/s
04:0081%0.5°C8737m0.94m/s
05:0046%0.6°C3314m1.7m/s
06:0047%0.5°C2852m2.3m/s
07:0038%0.7°C9719m2.7m/s
08:000%1.3°C24134m2.4m/s
09:000%1.8°C24135m3.2m/s
10:000%2.6°C12268m3.1m/s
11:0032%1.9°C2917m3.6m/s
12:000%2.2°C4559m3.6m/s
13:0019%1.8°C2770m4.3m/s
14:000%1.9°C4449m4.9m/s
15:0024%1.6°C2639m5m/s
16:000%1.5°C6107m5.2m/s
17:000%1.7°C11990m5.1m/s
18:000%1.8°C11663m4.8m/s
19:000%1.7°C8860m4.5m/s
20:000%1.6°C7378m4.3m/s
21:000%1.5°C8007m3.6m/s
22:000%1.2°C7074m2.7m/s
23:0076%0.9°C5590m2.5m/s
Tue, Feb 24
24:0065%0.9°C6859m2.4m/s
01:0044%0.8°C4392m2.2m/s
02:00100%0.6°C1424m1.8m/s
03:00100%0.3°C684m1m/s
04:0099%0.5°C493m1.2m/s
05:0037%0.7°C2071m2.5m/s
06:0037%0.8°C3045m2.5m/s
07:0037%0.9°C3418m2.4m/s
08:000%1.5°C3416m2.9m/s
09:000%2.1°C4069m3m/s
10:000%2.3°C3641m3.1m/s
11:000%2.5°C3929m3.1m/s
12:000%2.6°C4644m3.2m/s
13:000%2.5°C3890m3.3m/s
14:000%2.6°C3044m3.3m/s
15:000%2.5°C5015m3m/s
16:000%2.4°C5541m2.7m/s
17:000%1.5°C6715m2.1m/s
18:0075%0.4°C10288m0.69m/s
19:0078%0.3°C11205m0.68m/s
20:0060%0.6°C15515m0.57m/s
21:0060%1°C19825m0.47m/s
22:000%1.5°C24135m0.37m/s
23:000%1.2°C16135m0.71m/s
Wed, Feb 25
24:000%1°C8135m1.1m/s
01:0055%0.7°C135m1.4m/s
02:0055%0.7°C128m1.6m/s
03:000%0.8°C121m1.8m/s
04:000%0.9°C115m2m/s
05:000%1°C124m1.9m/s
06:000%1°C132m1.7m/s
07:000%1.1°C141m1.6m/s
08:000%1.2°C7761m1.5m/s
09:000%1.3°C15381m1.4m/s
10:000%1.4°C23001m1.3m/s
11:0024%0.9°C15811m0.93m/s
12:0032%0.5°C8621m0.59m/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/New_York
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Sun, Feb 22 Sunrise 06:35 Sunset 17:25
14:00
-3.4°C 0.01mm 81% 0.03cm -0.45°C 0.06mm 0.11kPa 1.4m/s
15:00
-3.6°C 0mm 79% 0cm -0.51°C 0.06mm 0.12kPa 2.1m/s
16:00
-3.6°C 0mm 81% 0cm -0.72°C 0.06mm 0.11kPa 1.4m/s
17:00
-3.4°C 0mm 94% 0cm -2.5°C 0.06mm 0.03kPa 0.51m/s
18:00
-6.1°C 0mm 95% 0cm -5.4°C 0.06mm 0.02kPa 1.2m/s
19:00
-7°C 0mm 95% 0cm -6.3°C 0.06mm 0.02kPa 1.4m/s
20:00
-7.8°C 0mm 94% 0cm -7.1°C 0mm 0.02kPa 1.5m/s
21:00
-8.8°C 0mm 94% 0cm -8.1°C 0mm 0.02kPa 1.4m/s
22:00
-9.3°C 0mm 95% 0cm -8.6°C 0mm 0.02kPa 1.3m/s
23:00
-8.5°C 0mm 94% 0cm -7.8°C 0mm 0.02kPa 1.3m/s
Mon, Feb 23 Sunrise 06:34 Sunset 17:27
24:00
-8.2°C 0mm 95% 0cm -7.6°C 0mm 0.02kPa 1m/s
01:00
-7.6°C 0mm 95% 0cm -6.9°C 0mm 0.02kPa 0.81m/s
02:00
-7.4°C 0mm 95% 0cm -6.7°C 0mm 0.02kPa 2.4m/s
03:00
-7.6°C 0.01mm 96% 0cm -7.2°C 0mm 0.01kPa 0.8m/s
04:00
-7.7°C 0.06mm 96% 0.06cm -7.2°C 0.06mm 0.01kPa 1.3m/s
05:00
-7.4°C 0.24mm 96% 0.24cm -6.8°C 0.19mm 0.02kPa 4.4m/s
06:00
-7.4°C 0.2mm 96% 0.2cm -6.9°C 0.44mm 0.01kPa 5.1m/s
07:00
-7.7°C 0.02mm 95% 0cm -7°C 0.5mm 0.02kPa 6.4m/s
08:00
-7.9°C 0mm 91% 0cm -6.6°C 0mm 0.04kPa 5.5m/s
09:00
-8.3°C 0.01mm 87% 0cm -6.5°C 0.06mm 0.05kPa 6.7m/s
10:00
-8.8°C 0.08mm 82% 0.08cm -6.2°C 0.06mm 0.07kPa 6.7m/s
11:00
-8.1°C 0.31mm 86% 0.31cm -6.2°C 0.38mm 0.05kPa 7.7m/s
12:00
-8.2°C 0.3mm 84% 0.3cm -6°C 0.56mm 0.06kPa 8.3m/s
13:00
-7.6°C 0.34mm 87% 0.34cm -5.8°C 0.94mm 0.05kPa 9.6m/s
14:00
-7.1°C 0.17mm 86% 0.18cm -5.2°C 0.19mm 0.06kPa 10m/s
15:00
-6.8°C 0.27mm 89% 0.3cm -5.2°C 0.44mm 0.05kPa 9.8m/s
16:00
-7.3°C 0.04mm 89% 0.06cm -5.8°C 0.63mm 0.04kPa 9.5m/s
17:00
-8.2°C 0.02mm 88% 0cm -6.5°C 0.63mm 0.05kPa 11m/s
18:00
-8.9°C 0.01mm 87% 0cm -7.1°C 0.69mm 0.05kPa 11m/s
19:00
-9.1°C 0.03mm 88% 0cm -7.4°C 0.69mm 0.04kPa 11m/s
20:00
-9.3°C 0.03mm 88% 0cm -7.7°C 0.06mm 0.04kPa 11m/s
21:00
-9.5°C 0.02mm 89% 0cm -8°C 0.06mm 0.04kPa 10m/s
22:00
-9.6°C 0.02mm 91% 0cm -8.4°C 0.13mm 0.03kPa 8m/s
23:00
-9.9°C 0.03mm 93% 0cm -9°C 0.13mm 0.02kPa 7.2m/s
Tue, Feb 24 Sunrise 06:32 Sunset 17:28
24:00
-10°C 0.02mm 93% 0cm -9.1°C 0.19mm 0.02kPa 8.5m/s
01:00
-10°C 0.03mm 94% 0cm -9.5°C 0.25mm 0.02kPa 6.1m/s
02:00
-11°C 0.05mm 95% 0.05cm -10°C 0.06mm 0.01kPa 5.4m/s
03:00
-11°C 0.06mm 97% 0.06cm -11°C 0.06mm 0.01kPa 2.9m/s
04:00
-11°C 0.1mm 97% 0.1cm -11°C 0.19mm 0.01kPa 6.4m/s
05:00
-11°C 0.04mm 94% 0.04cm -11°C 0.25mm 0.02kPa 8.6m/s
06:00
-12°C 0.03mm 94% 0cm -11°C 0.31mm 0.01kPa 8.5m/s
07:00
-13°C 0.03mm 93% 0cm -12°C 0.38mm 0.02kPa 7.6m/s
08:00
-13°C 0.03mm 88% 0cm -12°C 0.06mm 0.03kPa 6.7m/s
09:00
-13°C 0.02mm 85% 0cm -11°C 0.06mm 0.04kPa 5.7m/s
10:00
-12°C 0.04mm 83% 0.05cm -10°C 0.13mm 0.05kPa 5.2m/s
11:00
-12°C 0.03mm 82% 0.05cm -9.5°C 0.19mm 0.05kPa 5.1m/s
12:00
-11°C 0.03mm 81% 0.05cm -8.9°C 0.25mm 0.06kPa 5m/s
13:00
-11°C 0.03mm 81% 0.06cm -8.8°C 0.25mm 0.06kPa 4.8m/s
14:00
-11°C 0.04mm 82% 0.06cm -8.9°C 0.06mm 0.06kPa 4.6m/s
15:00
-12°C 0.03mm 82% 0.05cm -9.3°C 0.13mm 0.05kPa 4.2m/s
16:00
-12°C 0.04mm 83% 0.05cm -10°C 0.19mm 0.05kPa 4.1m/s
17:00
-13°C 0.03mm 89% 0.03cm -11°C 0.19mm 0.03kPa 4.3m/s
18:00
-14°C 0.01mm 97% 0cm -14°C 0.19mm 0.01kPa 0.8m/s
19:00
-16°C 0mm 98% 0cm -16°C 0.19mm 0kPa 0.62m/s
20:00
-16°C 0mm 95% 0cm -16°C 0.13mm 0.01kPa 0.55m/s
21:00
-16°C 0mm 92% 0cm -15°C 0.06mm 0.02kPa 0.48m/s
22:00
-16°C 0mm 88% 0cm -15°C 0mm 0.02kPa 0.4m/s
23:00
-15°C 0.13mm 90% 0.13cm -14°C 0.08mm 0.02kPa 0.98m/s
Wed, Feb 25 Sunrise 06:30 Sunset 17:29
24:00
-14°C 0.25mm 92% 0.25cm -13°C 0.17mm 0.02kPa 1.6m/s
01:00
-13°C 0.38mm 94% 0.38cm -13°C 0.25mm 0.01kPa 2.1m/s
02:00
-12°C 0.61mm 94% 0.61cm -12°C 0.85mm 0.02kPa 2.4m/s
03:00
-11°C 0.84mm 93% 0.84cm -11°C 1.5mm 0.02kPa 2.7m/s
04:00
-11°C 1.1mm 93% 1.1cm -9.7°C 2.1mm 0.02kPa 3m/s
05:00
-9.9°C 0.91mm 93% 0.92cm -8.9°C 2.9mm 0.02kPa 2.8m/s
06:00
-9.2°C 0.76mm 92% 0.76cm -8.2°C 3.6mm 0.03kPa 2.5m/s
07:00
-8.5°C 0.6mm 92% 0.6cm -7.4°C 4.4mm 0.03kPa 2.3m/s
08:00
-7.7°C 0.4mm 91% 0.4cm -6.5°C 3.2mm 0.03kPa 2m/s
09:00
-6.9°C 0.2mm 91% 0.2cm -5.6°C 2mm 0.04kPa 1.8m/s
10:00
-6.1°C 0mm 90% 0cm -4.7°C 0.75mm 0.04kPa 1.6m/s
11:00
-7.2°C 0.01mm 93% 0cm -6.3°C 0.77mm 0.03kPa 1.2m/s
12:00
-8.3°C 0.02mm 96% 0cm -7.8°C 0.79mm 0.01kPa 0.81m/s
13:00
-9.5°C 0.03mm 98% 0cm -9.3°C 0.81mm 0kPa 0.4m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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