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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 Spread3.1°C
Visibility24135 (Clear)
Relative Humidity79%
Wind Speed1.8m/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
Franconia
Sat, Apr 11 · 03:00–05:00 · 2h window
Medium confidence
55%
🌫️Fog Probability62.7-100%
Dewpoint Spread: 0.3°C
Visibility: 69 (Dense fog)
Relative Humidity: 98%
Wind Speed: 2.9m/s (calm conditions)
fog weather icon
Moderate Fog
Franconia
Mon, Apr 13 · 20:00–21:00
🌫️Fog Probability:61.4%
Low
fog weather icon
Dense Fog
Franconia
Mon, Apr 13 · 22:00–01:00
🌫️Fog Probability:62.7-97.3%
Medium
fog weather icon
Dense Fog at Sunrise
Franconia
Thu, Apr 16 · 05:00–06:00
🌫️Fog Probability:100%
Medium
fog weather icon
Dense Fog
Franconia
Thu, Apr 16 · 17:00–18:00
🌫️Fog Probability:96.2%
Medium
fog weather icon
Dense Fog at Sunset
Franconia
Thu, Apr 16 · 18:00–20:00
🌫️Fog Probability:98.5-100%
High
fog weather icon
Dense Fog
Franconia
Thu, Apr 16 · 20:00–02:00
🌫️Fog Probability:62.7-100%
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
5matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 60.0%
Wed, Apr 8
03:0089%
04:0089%
05:0061%
06:0046%
07:000%
08:000%
09:000%
10:000%
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Thu, Apr 9
24:000%
01:000%
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07:000%
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Fri, Apr 10
24:000%
01:000%
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07:000%
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21:0047%
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Sat, Apr 11
24:000%
01:000%
02:000%
03:00100%
04:0063%
05:0053%
06:0045%
07:0019%
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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
America/New_York
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 06:13 Sunset 19:23
04:00
99% -6.7°C 0mm 79% 0cm -23° -3.6°C 0mm 0.1kPa 24135m 1.4m/s 1.8m/s
05:00
100% -6.8°C 0mm 79% 0cm -13° -3.7°C 0mm 0.1kPa 24134m 1.3m/s 1.7m/s
06:00
100% -6.8°C 0mm 79% 0cm -3.1° -3.7°C 0mm 0.1kPa 24135m 1.4m/s 1.7m/s
07:00
100% -6.5°C 0mm 72% 0cm 7.5° -2.1°C 0mm 0.15kPa 24134m 2.1m/s 1.7m/s
08:00
100% -5.6°C 0mm 56% 0cm 18° 2.1°C 0mm 0.31kPa 24134m 2.9m/s 1.5m/s
09:00
100% -5.3°C 0mm 47% 0cm 29° 5°C 0mm 0.46kPa 24135m 4.6m/s 2.1m/s
10:00
99% -5.9°C 0mm 39% 0cm 38° 7°C 0mm 0.61kPa 24135m 6.4m/s 3m/s
11:00
99% -5.4°C 0mm 37% 0cm 47° 8.2°C 0mm 0.68kPa 24135m 6.9m/s 3.6m/s
12:00
99% -4.4°C 0mm 38% 0cm 52° 9.1°C 0mm 0.72kPa 24134m 7.4m/s 4.1m/s
13:00
100% -4°C 0mm 37% 0cm 53° 9.9°C 0mm 0.77kPa 24135m 7.9m/s 4.3m/s
14:00
100% -4.1°C 0mm 34% 0cm 50° 11°C 0mm 0.88kPa 24135m 8.4m/s 4.2m/s
15:00
95% -3.4°C 0mm 34% 0cm 44° 12°C 0mm 0.91kPa 24135m 9m/s 4.6m/s
16:00
91% -1.9°C 0mm 38% 0cm 35° 12°C 0mm 0.86kPa 24135m 9.6m/s 4.6m/s
17:00
86% -0.6°C 0mm 44% 0cm 25° 11°C 0mm 0.73kPa 24134m 11m/s 4.1m/s
18:00
75% -0.7°C 0mm 50% 0cm 14° 9.1°C 0mm 0.57kPa 24134m 9.2m/s 3.8m/s
19:00
63% -0.5°C 0mm 68% 0cm 3.6° 4.8°C 0mm 0.27kPa 24135m 3.9m/s 2.9m/s
20:00
52% -1.3°C 0mm 75% 0cm -7° 2.7°C 0mm 0.18kPa 24134m 4.1m/s 3m/s
21:00
35% -2°C 0mm 75% 0cm -17° 1.9°C 0mm 0.17kPa 24135m 4.1m/s 3.1m/s
22:00
18% -2.4°C 0mm 74% 0cm -26° 1.6°C 0mm 0.18kPa 24135m 4.4m/s 3.1m/s
23:00
1% -2.1°C 0mm 74% 0cm -32° 2°C 0mm 0.18kPa 24135m 4m/s 2.7m/s
Fri, Apr 10 Sunrise 06:12 Sunset 19:25
24:00
1% -1.7°C 0.05mm 75% 0cm -37° 2.3°C 0mm 0.18kPa 24134m 4.6m/s 2.8m/s
01:00
2% -0.7°C 0.05mm 80% 0cm -38° 2.4°C 0.19mm 0.14kPa 24135m 4.1m/s 2.6m/s
02:00
2% -0.2°C 0mm 84% 0cm -35° 2.3°C 0.19mm 0.12kPa 24135m 4m/s 2.4m/s
03:00
12% -0.8°C 0mm 87% 0cm -30° 1.2°C 0mm 0.09kPa 24134m 2.7m/s 2.3m/s
04:00
23% -1.1°C 0mm 86% 0cm -22° 1°C 0mm 0.1kPa 24134m 2.9m/s 2.4m/s
05:00
33% -0.3°C 0mm 82% 0cm -13° 2.5°C 0mm 0.13kPa 24135m 2.4m/s 2m/s
06:00
32% 0.7°C 0mm 82% 0cm -2.8° 3.5°C 0mm 0.14kPa 24135m 2.4m/s 2m/s
07:00
32% 0.9°C 0mm 87% 0cm 7.8° 2.8°C 0mm 0.1kPa 24135m 1.9m/s 1.8m/s
08:00
31% 2.7°C 0mm 79% 0cm 18° 5.9°C 0mm 0.19kPa 24135m 2.7m/s 1.6m/s
09:00
25% 4.1°C 0mm 74% 0cm 29° 8.5°C 0mm 0.29kPa 24135m 4.1m/s 1.8m/s
10:00
20% 5.4°C 0mm 69% 0cm 39° 11°C 0mm 0.4kPa 24134m 5.2m/s 2.3m/s
11:00
14% 6.1°C 0mm 70% 0cm 47° 11°C 0mm 0.4kPa 24135m 4.4m/s 2.2m/s
12:00
10% 6.8°C 0mm 68% 0cm 52° 12°C 0mm 0.46kPa 24134m 5m/s 2.5m/s
13:00
5% 7.8°C 0.39mm 67% 0cm 54° 14°C 0.13mm 0.52kPa 20390m 7.5m/s 3.9m/s
14:00
1% 7.7°C 0.54mm 90% 0cm 51° 9.2°C 0.75mm 0.12kPa 16925m 3.6m/s 1.7m/s
15:00
1% 8.5°C 0mm 86% 0cm 44° 11°C 0.13mm 0.18kPa 24135m 7.7m/s 2.7m/s
16:00
0% 9.8°C 0.01mm 76% 0cm 35° 14°C 0.19mm 0.38kPa 14192m 11m/s 3.5m/s
17:00
0% 9.8°C 0mm 73% 0cm 25° 15°C 0.38mm 0.44kPa 23413m 13m/s 3.7m/s
18:00
0% 9.1°C 0.04mm 76% 0cm 14° 13°C 0.75mm 0.36kPa 23839m 13m/s 5.2m/s
19:00
0% 9.8°C 0.54mm 91% 0cm 3.8° 11°C 1.5mm 0.12kPa 10155m 14m/s 4.8m/s
20:00
0% 8.8°C 0mm 93% 0cm -6.8° 9.9°C 1.8mm 0.09kPa 19876m 7.4m/s 2.1m/s
21:00
0% 7.3°C 0.48mm 98% 0cm -17° 7.7°C 0.19mm 0.03kPa 16975m 2.3m/s 1.6m/s
22:00
0% 5.2°C 1.5mm 99% 0cm -25° 5.4°C 2.1mm 0.01kPa 1107m 3.1m/s 2m/s
23:00
0% 4°C 4.2mm 99% 0cm -32° 4.1°C 4.6mm 0.01kPa 563m 1.7m/s 0.89m/s
Sat, Apr 11 Sunrise 06:10 Sunset 19:26
24:00
0% 3.7°C 1.5mm 98% 0cm -36° 3.9°C 6.4mm 0.01kPa 2256m 2.6m/s 1.1m/s
01:00
0% 3.3°C 0.46mm 97% 0cm -37° 3.7°C 7.1mm 0.02kPa 10595m 5.3m/s 1.6m/s
02:00
0% 2.5°C 0.01mm 98% 0cm -35° 2.9°C 7.3mm 0.02kPa 1245m 6.4m/s 2.6m/s
03:00
2% 1.5°C 0.08mm 98% 0.11cm -30° 1.8°C 0.06mm 0.01kPa 69m 6.9m/s 2.9m/s
04:00
3% 0.9°C 0.08mm 99% 0.11cm -22° 1.1°C 0.25mm 0.01kPa 42m 7.3m/s 2.6m/s
05:00
5% 0.6°C 0.04mm 98% 0.11cm -13° 0.8°C 0.38mm 0.01kPa 53m 8m/s 2.7m/s
06:00
4% 0°C 0.05mm 97% 0.16cm -2.5° 0.35°C 0.5mm 0.02kPa 1135m 8m/s 3.5m/s
07:00
4% -0.6°C 0.02mm 94% 0.14cm 8.1° 0.19°C 0.63mm 0.03kPa 3585m 8.7m/s 3.5m/s
08:00
3% -1.2°C 0mm 89% 0.07cm 19° 0.49°C 0.75mm 0.07kPa 8121m 8.4m/s 3.8m/s
09:00
5% -2.2°C 0.003mm 79% 0.05cm 29° 1°C 0.52mm 0.14kPa 13306m 8.9m/s 4m/s
10:00
8% -3.3°C 0.007mm 70% 0.02cm 39° 1.6°C 0.29mm 0.21kPa 18491m 9.4m/s 4.2m/s
11:00
10% -4.8°C 0.01mm 60% 0cm 47° 2.1°C 0.06mm 0.28kPa 23675m 9.9m/s 4.5m/s
12:00
10% -4.3°C 0.007mm 69% 0cm 53° 0.67°C 0.06mm 0.2kPa 23829m 7.2m/s 3.6m/s
13:00
11% -4.1°C 0.003mm 78% 0cm 54° -0.76°C 0.06mm 0.13kPa 23982m 4.5m/s 2.8m/s
14:00
11% -4.1°C 0mm 86% 0cm 51° -2.2°C 0.06mm 0.07kPa 24135m 1.8m/s 1.9m/s
15:00
24% -4.2°C 0mm 86% 0cm 44° -2.2°C 0.04mm 0.07kPa 24135m 1.8m/s 1.9m/s
16:00
38% -4.2°C 0mm 86% 0cm 35° -2.3°C 0.02mm 0.07kPa 24135m 1.8m/s 1.9m/s
17:00
51% -4.3°C 0mm 86% 0cm 25° -2.3°C 0mm 0.07kPa 24135m 1.8m/s 1.9m/s
18:00
53% -4.5°C 0mm 86% 0cm 15° -2.6°C 0mm 0.07kPa 24135m 1.7m/s 1.8m/s
19:00
54% -4.7°C 0mm 86% 0cm -2.8°C 0mm 0.07kPa 24135m 1.6m/s 1.8m/s
20:00
56% -4.9°C 0mm 86% 0cm -6.5° -3°C 0mm 0.07kPa 24135m 1.5m/s 1.7m/s
21:00
68% -5.2°C 0mm 84% 0cm -16° -2.9°C 0mm 0.08kPa 24135m 1.5m/s 1.7m/s
22:00
80% -5.4°C 0mm 82% 0cm -25° -2.8°C 0mm 0.09kPa 24135m 1.5m/s 1.8m/s
23:00
92% -5.7°C 0mm 80% 0cm -32° -2.8°C 0mm 0.1kPa 24135m 1.5m/s 1.8m/s
Sun, Apr 12 Sunrise 06:08 Sunset 19:27
24:00
93% -5.5°C 0mm 73% 0cm -36° -1.3°C 0mm 0.15kPa 24135m 1.7m/s 1.6m/s
01:00
94% -5.5°C 0mm 65% 0cm -37° 0.23°C 0mm 0.21kPa 24135m 1.8m/s 1.5m/s
02:00
95% -5.6°C 0mm 58% 0cm -35° 1.7°C 0mm 0.29kPa 24135m 2m/s 1.3m/s
03:00
95% -5.7°C 0mm 52% 0cm -29° 3.3°C 0mm 0.37kPa 24135m 2m/s 1.6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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