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Rule Fog Hunter

Waynesville - Fog Hunter - Smoky Mountains & Blue Ridge

Waynesville, North Carolina, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread5.1°C
Visibility24135 (Clear)
Relative Humidity69%
Wind Speed1.9m/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
Waynesville
Sat, Apr 25 · 17:00–20:00 · 3h window
Low confidence
22%
🌫️Fog Probability62.7-73.8%
Dewpoint Spread: 0.3°C
Visibility: 24135 (Clear)
Relative Humidity: 98%
Wind Speed: 1.2m/s (calm conditions)
fog weather icon
Moderate Fog
Waynesville
Mon, Apr 27 · 23:00–01:00
🌫️Fog Probability:61.4-63.4%
Low
fog weather icon
Moderate Fog
Waynesville
Tue, Apr 28 · 22:00–23:00
🌫️Fog Probability:62.7%
Low
fog weather icon
Moderate Fog
Waynesville
Wed, Apr 29 · 24:00–03:00
🌫️Fog Probability:62.7-70.7%
Low

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 75 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 60.0%
Mon, Apr 20
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
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23:000%
Tue, Apr 21
24:000%
01:000%
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05:000%
06:000%
07:000%
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09:000%
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Wed, Apr 22
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
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Thu, Apr 23
24:000%
01:000%
02:000%
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
Mon, Apr 20 Sunrise 06:53 Sunset 20:09
04:00
100% -3.7°C 0mm 69% 0cm -31° 1.4°C 0mm 0.21kPa 24135m 2m/s 1.9m/s
05:00
100% -3.4°C 0mm 70% 0cm -22° 1.5°C 0mm 0.21kPa 24134m 2.1m/s 2m/s
06:00
100% -3.3°C 0mm 71% 0cm -11° 1.4°C 0mm 0.2kPa 24134m 2.2m/s 2.2m/s
07:00
100% -3.2°C 0mm 73% 0cm 0.97° 1.2°C 0mm 0.18kPa 24135m 2.8m/s 2.3m/s
08:00
100% -2.3°C 0mm 66% 0cm 13° 3.4°C 0mm 0.26kPa 24134m 3.3m/s 2m/s
09:00
99% -1.9°C 0mm 52% 0cm 25° 7.3°C 0mm 0.49kPa 24135m 7.2m/s 2.1m/s
10:00
99% -1.1°C 0mm 47% 0cm 37° 9.7°C 0mm 0.64kPa 24135m 11m/s 3.7m/s
11:00
98% -0.4°C 0mm 46% 0cm 48° 11°C 0mm 0.71kPa 24134m 13m/s 4.9m/s
12:00
98% -0.7°C 0mm 40% 0cm 59° 13°C 0mm 0.88kPa 24134m 13m/s 5.7m/s
13:00
98% 0.3°C 0mm 40% 0cm 65° 13°C 0mm 0.92kPa 24135m 13m/s 5.9m/s
14:00
98% -0.6°C 0mm 38% 0cm 65° 13°C 0mm 0.96kPa 24134m 13m/s 6.3m/s
15:00
97% -0.3°C 0mm 39% 0cm 59° 13°C 0mm 0.92kPa 24135m 11m/s 5.9m/s
16:00
95% 0.2°C 0mm 41% 0cm 49° 13°C 0mm 0.89kPa 24134m 11m/s 5.8m/s
17:00
94% 0.4°C 0mm 42% 0cm 37° 13°C 0mm 0.86kPa 24134m 11m/s 5.6m/s
18:00
96% 0.2°C 0mm 42% 0cm 25° 13°C 0mm 0.84kPa 24135m 12m/s 5.5m/s
19:00
97% 1.7°C 0mm 52% 0cm 13° 11°C 0mm 0.63kPa 24135m 11m/s 3.9m/s
20:00
99% 2.1°C 0mm 70% 0cm 1.4° 7.2°C 0mm 0.3kPa 24134m 2.3m/s 1.8m/s
21:00
99% 2°C 0mm 82% 0cm -11° 4.8°C 0mm 0.15kPa 24135m 1.2m/s 1.2m/s
22:00
100% 2.1°C 0mm 88% 0cm -21° 3.9°C 0mm 0.1kPa 24134m 0.9m/s 0.83m/s
23:00
100% 2.1°C 0mm 91% 0cm -31° 3.5°C 0mm 0.07kPa 24134m 0.81m/s 0.8m/s
Tue, Apr 21 Sunrise 06:51 Sunset 20:09
24:00
100% 1.9°C 0mm 91% 0cm -38° 3.2°C 0mm 0.07kPa 24135m 1m/s 0.99m/s
01:00
100% 1.6°C 0mm 91% 0cm -42° 3°C 0mm 0.07kPa 24135m 1m/s 1.1m/s
02:00
100% 1.4°C 0mm 89% 0cm -42° 3.1°C 0mm 0.09kPa 24135m 1.4m/s 1.5m/s
03:00
100% 1.2°C 0mm 88% 0cm -38° 3°C 0mm 0.09kPa 24134m 1.6m/s 1.7m/s
04:00
100% 1.2°C 0mm 88% 0cm -31° 3°C 0mm 0.09kPa 24134m 1.6m/s 1.7m/s
05:00
100% 1.2°C 0mm 87% 0cm -22° 3.1°C 0mm 0.1kPa 24135m 1.6m/s 1.7m/s
06:00
100% 1.1°C 0mm 86% 0cm -11° 3.2°C 0mm 0.11kPa 24134m 1.7m/s 1.9m/s
07:00
100% 1.1°C 0mm 86% 0cm 1.2° 3.2°C 0mm 0.11kPa 24134m 1.5m/s 1.6m/s
08:00
100% 1.9°C 0mm 74% 0cm 13° 6.2°C 0mm 0.24kPa 24134m 1.5m/s 1.2m/s
09:00
100% 2.7°C 0mm 58% 0cm 25° 11°C 0mm 0.53kPa 24134m 1.2m/s 0.9m/s
10:00
100% 2.2°C 0mm 47% 0cm 37° 13°C 0mm 0.82kPa 24134m 2.5m/s 1.1m/s
11:00
100% 1.9°C 0mm 40% 0cm 49° 15°C 0mm 1.1kPa 24134m 3.4m/s 1.3m/s
12:00
100% 1.5°C 0mm 35% 0cm 59° 17°C 0mm 1.2kPa 24134m 3.9m/s 1.6m/s
13:00
99% 1.4°C 0mm 33% 0cm 66° 18°C 0mm 1.4kPa 24134m 3.3m/s 1.8m/s
14:00
99% 1.6°C 0mm 31% 0cm 66° 19°C 0mm 1.5kPa 24134m 3.5m/s 1.9m/s
15:00
79% 1.7°C 0mm 31% 0cm 59° 19°C 0mm 1.5kPa 24134m 3.6m/s 2.3m/s
16:00
60% 1.4°C 0mm 31% 0cm 49° 19°C 0mm 1.5kPa 24135m 3.6m/s 2.8m/s
17:00
40% 1°C 0mm 31% 0cm 37° 18°C 0mm 1.5kPa 24135m 3.6m/s 3.2m/s
18:00
33% 1.3°C 0mm 34% 0cm 25° 17°C 0mm 1.3kPa 24134m 3.3m/s 2.7m/s
19:00
27% 4.9°C 0mm 50% 0cm 13° 15°C 0mm 0.87kPa 24135m 2.1m/s 1.4m/s
20:00
20% 4.2°C 0mm 63% 0cm 1.5° 11°C 0mm 0.48kPa 24135m 0.91m/s 0.98m/s
21:00
17% 3.6°C 0mm 66% 0cm -10° 9.6°C 0mm 0.4kPa 24134m 1.5m/s 1.6m/s
22:00
15% 3.3°C 0mm 67% 0cm -21° 9°C 0mm 0.37kPa 24135m 2m/s 2.1m/s
23:00
12% 3.4°C 0mm 68% 0cm -31° 8.9°C 0mm 0.36kPa 24134m 2.7m/s 2.4m/s
Wed, Apr 22 Sunrise 06:50 Sunset 20:10
24:00
10% 3.7°C 0mm 72% 0cm -38° 8.4°C 0mm 0.3kPa 24134m 3.6m/s 2.5m/s
01:00
7% 3.8°C 0mm 74% 0cm -42° 8.1°C 0mm 0.28kPa 24135m 3.4m/s 2.3m/s
02:00
5% 3.9°C 0mm 76% 0cm -42° 7.9°C 0mm 0.26kPa 24134m 3.1m/s 2.4m/s
03:00
10% 3.9°C 0mm 77% 0cm -38° 7.6°C 0mm 0.23kPa 24134m 3m/s 2.3m/s
04:00
14% 3.7°C 0mm 77% 0cm -31° 7.4°C 0mm 0.23kPa 24134m 2.4m/s 2.2m/s
05:00
19% 3.6°C 0mm 78% 0cm -21° 7.2°C 0mm 0.23kPa 24134m 2.4m/s 2.3m/s
06:00
23% 3.4°C 0mm 79% 0cm -10° 6.9°C 0mm 0.21kPa 24135m 2.9m/s 2.4m/s
07:00
27% 3.3°C 0mm 79% 0cm 1.4° 6.8°C 0mm 0.21kPa 24135m 3.5m/s 2.4m/s
08:00
31% 4.2°C 0mm 71% 0cm 13° 9.2°C 0mm 0.34kPa 24134m 3.9m/s 2.1m/s
09:00
49% 4°C 0mm 52% 0cm 25° 14°C 0mm 0.75kPa 24135m 8m/s 2.6m/s
10:00
68% 1.8°C 0mm 39% 0cm 37° 16°C 0mm 1.1kPa 24135m 7.2m/s 4.1m/s
11:00
86% 1.5°C 0mm 35% 0cm 49° 17°C 0mm 1.3kPa 24134m 6.3m/s 4m/s
12:00
89% 1.3°C 0mm 32% 0cm 59° 18°C 0mm 1.4kPa 24134m 5.5m/s 3.8m/s
13:00
91% 1.2°C 0mm 30% 0cm 66° 19°C 0mm 1.5kPa 24135m 5.2m/s 3.9m/s
14:00
94% 1.4°C 0mm 30% 0cm 66° 20°C 0mm 1.6kPa 24135m 5m/s 4m/s
15:00
89% 3.8°C 0mm 43% 0cm 59° 16°C 0mm 1.1kPa 24135m 3.8m/s 3.2m/s
16:00
84% 4.7°C 0mm 57% 0cm 49° 13°C 0mm 0.65kPa 24135m 2.6m/s 2.3m/s
17:00
79% 4.7°C 0mm 70% 0cm 38° 9.9°C 0mm 0.36kPa 24135m 1.4m/s 1.5m/s
18:00
77% 4.6°C 0mm 72% 0cm 26° 9.4°C 0mm 0.33kPa 24135m 1.3m/s 1.4m/s
19:00
75% 4.5°C 0mm 74% 0cm 13° 8.9°C 0mm 0.29kPa 24135m 1.2m/s 1.2m/s
20:00
73% 4.5°C 0mm 76% 0cm 1.6° 8.4°C 0mm 0.26kPa 24135m 1.1m/s 1.1m/s
21:00
78% 4.7°C 0mm 79% 0cm -10° 8.2°C 0mm 0.23kPa 24135m 0.92m/s 0.87m/s
22:00
84% 4.9°C 0mm 81% 0cm -21° 8.1°C 0mm 0.21kPa 24135m 0.73m/s 0.64m/s
23:00
89% 5.2°C 0mm 83% 0cm -30° 7.9°C 0mm 0.18kPa 24135m 0.53m/s 0.4m/s
Thu, Apr 23 Sunrise 06:49 Sunset 20:11
24:00
90% 5.5°C 0mm 79% 0cm -37° 8.9°C 0mm 0.24kPa 24135m 0.7m/s 0.56m/s
01:00
91% 5.9°C 0mm 76% 0cm -41° 10°C 0mm 0.3kPa 24135m 0.86m/s 0.71m/s
02:00
92% 6.2°C 0mm 72% 0cm -41° 11°C 0mm 0.36kPa 24135m 1m/s 0.87m/s
03:00
93% 6°C 0mm 61% 0cm -37° 13°C 0mm 0.59kPa 24135m 2m/s 1.4m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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