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Rule Fog Hunter

Bryson City - Fog Hunter - Smoky Mountains & Blue Ridge

Bryson City, North Carolina, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread3.6°C
Visibility24135 (Clear)
Relative Humidity77%
Wind Speed1.6m/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
Moderate Fog
Bryson City
Thu, Apr 16 · 23:00–24:00 · 1h window
Medium confidence
44%
🌫️Fog Probability79.7%
Dewpoint Spread: 0.4°C
Visibility: 24135 (Clear)
Relative Humidity: 97%
Wind Speed: 1.6m/s (calm conditions)

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the namesake "smoke" that gives the Great Smoky Mountains their name—the natural fog and mist that creates atmospheric conditions found nowhere else in the eastern United States. We combine humidity, temperature, and topography to predict when valleys will fill with fog while ridgelines glow above.

The Smokies generate their own weather. Dense forests release moisture through transpiration, creating the persistent haze that appears as blue smoke from a distance. Add morning temperature inversions, and valleys like Cades Cove become fog-filled bowls with mountain ridges emerging from the mist. This phenomenon occurs year-round but peaks during autumn when humidity remains high and temperatures drop.

What makes Smoky Mountains fog photography exceptional:

  • Natural smoke effect - Forest transpiration creates the blue haze that's visible even on clear days, intensifying during foggy conditions
  • Cades Cove mornings - Historic valley becomes a sea of fog with churches and barns emerging as islands
  • Blue Ridge Parkway inversions - High-elevation overlooks look down on clouds filling valleys below
  • Appalachian character - Fog transforms familiar mountain landscapes into ancient, primeval scenes

Best fog occurs on clear, calm nights followed by sunny mornings, typically September through November. Arrive at Cades Cove before dawn to catch fog at its thickest. Blue Ridge Parkway overlooks like Clingmans Dome and Waterrock Knob offer views above the clouds. The fog typically burns off by mid-morning, so timing is critical.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 74 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 60.0%
Thu, Apr 9
24:000%
01:000%
02:000%
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Fri, Apr 10
24:000%
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Sat, Apr 11
24:000%
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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 07:09 Sunset 20:00
04:00
0% -0.4°C 0mm 77% 0cm -35° 3.2°C 0mm 0.17kPa 24135m 1.6m/s 1.6m/s
05:00
0% -1°C 0mm 76% 0cm -25° 2.8°C 0mm 0.18kPa 24134m 1.6m/s 1.6m/s
06:00
0% -1.6°C 0mm 76% 0cm -14° 2.2°C 0mm 0.17kPa 24135m 1.6m/s 1.6m/s
07:00
0% -2°C 0mm 73% 0cm -2.6° 2.3°C 0mm 0.19kPa 24134m 1.3m/s 1.4m/s
08:00
0% -1.9°C 0mm 68% 0cm 9.5° 3.3°C 0mm 0.24kPa 24134m 1.7m/s 1.2m/s
09:00
9% -2°C 0mm 57% 0cm 22° 5.8°C 0mm 0.4kPa 24135m 1.8m/s 1.4m/s
10:00
18% -1.7°C 0mm 48% 0cm 34° 8.6°C 0mm 0.58kPa 24135m 1.6m/s 1.4m/s
11:00
27% -0.9°C 0mm 42% 0cm 45° 11°C 0mm 0.78kPa 24135m 1.2m/s 1.2m/s
12:00
31% 0.2°C 0mm 38% 0cm 55° 14°C 0mm 1kPa 24134m 1.1m/s 1.1m/s
13:00
34% 1°C 0mm 35% 0cm 61° 16°C 0mm 1.2kPa 24135m 1.1m/s 1.1m/s
14:00
38% 1.7°C 0mm 34% 0cm 62° 18°C 0mm 1.3kPa 24135m 1.3m/s 0.97m/s
15:00
53% 1.9°C 0mm 34% 0cm 56° 18°C 0mm 1.4kPa 24135m 1.6m/s 1.2m/s
16:00
67% 2.1°C 0mm 35% 0cm 47° 18°C 0mm 1.3kPa 24135m 1.8m/s 1.3m/s
17:00
82% 2.5°C 0mm 36% 0cm 36° 18°C 0mm 1.3kPa 24134m 1.8m/s 1.1m/s
18:00
86% 2.9°C 0mm 39% 0cm 24° 17°C 0mm 1.2kPa 24134m 1.3m/s 0.93m/s
19:00
90% 6.2°C 0mm 55% 0cm 12° 15°C 0mm 0.78kPa 24135m 1.3m/s 0.55m/s
20:00
94% 5.1°C 0mm 70% 0cm 0.11° 10°C 0mm 0.38kPa 24134m 1m/s 0.46m/s
21:00
96% 4.4°C 0mm 75% 0cm -12° 8.6°C 0mm 0.28kPa 24135m 1.2m/s 1.3m/s
22:00
98% 3.4°C 0mm 76% 0cm -23° 7.3°C 0mm 0.24kPa 24135m 1.2m/s 1.4m/s
23:00
100% 2.4°C 0mm 76% 0cm -33° 6.4°C 0mm 0.23kPa 24135m 1.2m/s 1.2m/s
Fri, Apr 10 Sunrise 07:08 Sunset 20:01
24:00
100% 1.7°C 0mm 75% 0cm -41° 5.8°C 0mm 0.23kPa 24134m 1.1m/s 1.1m/s
01:00
100% 1.2°C 0mm 75% 0cm -46° 5.3°C 0mm 0.22kPa 24135m 1.2m/s 1.3m/s
02:00
100% 0.9°C 0mm 76% 0cm -46° 4.9°C 0mm 0.21kPa 24135m 1.4m/s 1.5m/s
03:00
100% 0.6°C 0mm 76% 0cm -42° 4.4°C 0mm 0.2kPa 24134m 1.2m/s 1.3m/s
04:00
100% 0.2°C 0mm 75% 0cm -35° 4.3°C 0mm 0.21kPa 24134m 1.3m/s 1.2m/s
05:00
100% -0.2°C 0mm 74% 0cm -25° 4.1°C 0mm 0.21kPa 24135m 1.2m/s 1.2m/s
06:00
100% -0.4°C 0mm 73% 0cm -14° 4°C 0mm 0.22kPa 24135m 1.1m/s 1m/s
07:00
100% -0.7°C 0mm 72% 0cm -2.3° 3.8°C 0mm 0.23kPa 24135m 1m/s 1m/s
08:00
100% 0.1°C 0mm 68% 0cm 9.8° 5.6°C 0mm 0.3kPa 24135m 0.82m/s 0.76m/s
09:00
100% 0.8°C 0mm 55% 0cm 22° 9.5°C 0mm 0.53kPa 24135m 0.32m/s 0.34m/s
10:00
100% 1.8°C 0mm 46% 0cm 34° 13°C 0mm 0.81kPa 24134m 0.7m/s 0.54m/s
11:00
100% 2.4°C 0mm 40% 0cm 45° 16°C 0mm 1.1kPa 24135m 0.62m/s 0.97m/s
12:00
100% 2.5°C 0mm 36% 0cm 55° 18°C 0mm 1.3kPa 24134m 1m/s 1.1m/s
13:00
100% 2.6°C 0mm 34% 0cm 62° 19°C 0mm 1.4kPa 24135m 1m/s 1.3m/s
14:00
100% 2.8°C 0mm 32% 0cm 62° 20°C 0mm 1.6kPa 24134m 1.3m/s 1.4m/s
15:00
98% 2.7°C 0mm 31% 0cm 57° 20°C 0mm 1.6kPa 24135m 1.4m/s 1.5m/s
16:00
95% 2.6°C 0mm 31% 0cm 47° 20°C 0mm 1.6kPa 24135m 1.4m/s 1.4m/s
17:00
93% 2.7°C 0mm 32% 0cm 36° 20°C 0mm 1.6kPa 24134m 1.7m/s 1.4m/s
18:00
92% 3.6°C 0mm 36% 0cm 24° 19°C 0mm 1.4kPa 24135m 1.5m/s 1.4m/s
19:00
92% 7.2°C 0mm 54% 0cm 12° 16°C 0mm 0.86kPa 24135m 2.4m/s 1.9m/s
20:00
91% 6.7°C 0mm 71% 0cm 0.25° 12°C 0mm 0.41kPa 24134m 1.9m/s 2.2m/s
21:00
81% 5.8°C 0mm 75% 0cm -12° 10°C 0mm 0.31kPa 24135m 1.4m/s 1.6m/s
22:00
70% 5.2°C 0mm 75% 0cm -23° 9.5°C 0mm 0.3kPa 24134m 1.4m/s 1.5m/s
23:00
60% 5°C 0mm 76% 0cm -33° 9°C 0mm 0.28kPa 24135m 1m/s 1.1m/s
Sat, Apr 11 Sunrise 07:06 Sunset 20:02
24:00
58% 4.9°C 0mm 77% 0cm -41° 8.7°C 0mm 0.26kPa 24134m 0.71m/s 0.69m/s
01:00
56% 4.8°C 0mm 79% 0cm -45° 8.2°C 0mm 0.23kPa 24135m 0.6m/s 0.6m/s
02:00
54% 4.6°C 0mm 80% 0cm -46° 8°C 0mm 0.22kPa 24135m 0.71m/s 0.69m/s
03:00
59% 4.2°C 0mm 78% 0cm -42° 7.9°C 0mm 0.24kPa 24134m 0.72m/s 0.81m/s
04:00
64% 3.5°C 0mm 74% 0cm -34° 7.9°C 0mm 0.28kPa 24134m 0.71m/s 0.83m/s
05:00
69% 2.9°C 0mm 72% 0cm -25° 7.7°C 0mm 0.3kPa 24134m 0.82m/s 0.85m/s
06:00
71% 2.2°C 0mm 69% 0cm -14° 7.6°C 0mm 0.32kPa 24135m 0.81m/s 0.85m/s
07:00
72% 1.7°C 0mm 67% 0cm -2° 7.5°C 0mm 0.34kPa 24135m 0.91m/s 1m/s
08:00
74% 2.8°C 0mm 65% 0cm 10° 9.1°C 0mm 0.41kPa 24134m 0.91m/s 0.98m/s
09:00
77% 4.1°C 0mm 53% 0cm 22° 13°C 0mm 0.71kPa 24134m 1.2m/s 1m/s
10:00
79% 4.5°C 0mm 42% 0cm 34° 18°C 0mm 1.2kPa 24135m 1.5m/s 1m/s
11:00
82% 3.9°C 0mm 31% 0cm 46° 22°C 0mm 1.8kPa 24135m 1.7m/s 1m/s
12:00
84% 6.4°C 0mm 44% 0cm 55° 19°C 0mm 1.2kPa 24135m 1.5m/s 1m/s
13:00
87% 7.7°C 0mm 57% 0cm 62° 16°C 0mm 0.81kPa 24135m 1.3m/s 0.99m/s
14:00
89% 8.1°C 0mm 69% 0cm 62° 14°C 0mm 0.48kPa 24135m 1m/s 0.96m/s
15:00
85% 7.8°C 0mm 72% 0cm 57° 13°C 0mm 0.42kPa 24135m 1.1m/s 1.1m/s
16:00
81% 7.5°C 0mm 74% 0cm 47° 12°C 0mm 0.37kPa 24135m 1.2m/s 1.2m/s
17:00
77% 7.2°C 0mm 76% 0cm 36° 11°C 0mm 0.32kPa 24135m 1.3m/s 1.4m/s
18:00
77% 6.7°C 0mm 76% 0cm 24° 11°C 0mm 0.31kPa 24135m 1.3m/s 1.3m/s
19:00
77% 6.2°C 0mm 76% 0cm 12° 10°C 0mm 0.31kPa 24135m 1.3m/s 1.2m/s
20:00
77% 5.7°C 0mm 75% 0cm 0.38° 9.8°C 0mm 0.3kPa 24135m 1.2m/s 1.1m/s
21:00
77% 5.5°C 0mm 76% 0cm -12° 9.6°C 0mm 0.29kPa 24135m 1.2m/s 1.1m/s
22:00
78% 5.3°C 0mm 76% 0cm -23° 9.4°C 0mm 0.29kPa 24135m 1.2m/s 1.2m/s
23:00
78% 5.1°C 0mm 76% 0cm -33° 9.1°C 0mm 0.28kPa 24135m 1.2m/s 1.2m/s
Sun, Apr 12 Sunrise 07:05 Sunset 20:03
24:00
80% 5.2°C 0mm 74% 0cm -41° 9.5°C 0mm 0.3kPa 24135m 1.3m/s 1.2m/s
01:00
82% 5.2°C 0mm 73% 0cm -45° 9.8°C 0mm 0.33kPa 24135m 1.3m/s 1.2m/s
02:00
84% 5.3°C 0mm 72% 0cm -45° 10°C 0mm 0.35kPa 24135m 1.3m/s 1.2m/s
03:00
85% 5.8°C 0mm 64% 0cm -41° 13°C 0mm 0.53kPa 24135m 2.5m/s 1.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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