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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 Spread9.3°C
Visibility24134 (Clear)
Relative Humidity56%
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 at Dawn
Waynesville
Fri, May 22 · 05:00–06:00 · 1h window
Low confidence
38%
🌫️Fog Probability80%
Dewpoint Spread: 0.8°C
Visibility: 121 (Dense fog)
Relative Humidity: 95%
Wind Speed: 1.8m/s (calm conditions)
fog weather icon
Moderate Fog at Sunrise
Waynesville
Fri, May 22 · 06:00–07:00
🌫️Fog Probability:80%
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 81 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 75.0%
Mon, May 18
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:0055%
07:000%
08:000%
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11:000%
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23:000%
Tue, May 19
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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Wed, May 20
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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22:0030%
23:000%
Thu, May 21
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
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, May 18 Sunrise 06:25 Sunset 20:31
10:00
98% 13°C 0mm 56% 0cm 42° 23°C 0mm 1.2kPa 24134m 4.9m/s 1.9m/s
11:00
98% 12°C 0mm 46% 0cm 54° 24°C 0mm 1.6kPa 24134m 5.8m/s 2.3m/s
12:00
99% 11°C 0mm 39% 0cm 65° 26°C 0mm 2kPa 24134m 6.2m/s 2.7m/s
13:00
99% 9°C 0mm 33% 0cm 73° 27°C 0mm 2.3kPa 24134m 6.6m/s 3.1m/s
14:00
100% 8.3°C 0mm 31% 0cm 73° 27°C 0mm 2.4kPa 24135m 6.8m/s 3.5m/s
15:00
98% 8.8°C 0mm 32% 0cm 64° 27°C 0mm 2.4kPa 24135m 6.5m/s 3.6m/s
16:00
96% 9.5°C 0mm 35% 0cm 53° 26°C 0mm 2.2kPa 24135m 6.3m/s 3.5m/s
17:00
94% 10°C 0mm 38% 0cm 41° 26°C 0mm 2kPa 24135m 5.8m/s 3.5m/s
18:00
89% 11°C 0mm 43% 0cm 29° 25°C 0mm 1.8kPa 24134m 5.6m/s 3.7m/s
19:00
85% 13°C 0mm 55% 0cm 17° 23°C 0mm 1.2kPa 24134m 6m/s 3.2m/s
20:00
80% 14°C 0mm 71% 0cm 5.4° 19°C 0mm 0.64kPa 24134m 2.4m/s 2m/s
21:00
70% 13°C 0mm 76% 0cm -5.8° 17°C 0mm 0.45kPa 24134m 1.7m/s 1.8m/s
22:00
59% 12°C 0mm 76% 0cm -16° 16°C 0mm 0.45kPa 24134m 1.7m/s 1.8m/s
23:00
49% 11°C 0mm 72% 0cm -25° 16°C 0mm 0.5kPa 24134m 1.8m/s 1.9m/s
Tue, May 19 Sunrise 06:24 Sunset 20:32
24:00
48% 10°C 0mm 70% 0cm -31° 15°C 0mm 0.52kPa 24134m 1.8m/s 1.9m/s
01:00
47% 10°C 0mm 71% 0cm -34° 15°C 0mm 0.51kPa 24134m 1.9m/s 2m/s
02:00
46% 11°C 0mm 74% 0cm -34° 15°C 0mm 0.44kPa 24134m 2.3m/s 2.1m/s
03:00
42% 11°C 0mm 79% 0cm -31° 15°C 0mm 0.34kPa 24134m 1.9m/s 2m/s
04:00
38% 11°C 0mm 84% 0cm -24° 14°C 0mm 0.26kPa 24135m 1.9m/s 2.1m/s
05:00
34% 12°C 0mm 86% 0cm -15° 14°C 0mm 0.21kPa 24135m 1.8m/s 2m/s
06:00
31% 11°C 0mm 88% 0cm -5.2° 13°C 0mm 0.18kPa 24135m 1.8m/s 2m/s
07:00
27% 12°C 0mm 86% 0cm 14°C 0mm 0.21kPa 24134m 1.8m/s 1.9m/s
08:00
24% 13°C 0mm 75% 0cm 18° 17°C 0mm 0.49kPa 24134m 2.3m/s 1.5m/s
09:00
25% 12°C 0mm 59% 0cm 30° 20°C 0mm 0.96kPa 24134m 2.6m/s 1.6m/s
10:00
25% 9°C 0mm 42% 0cm 42° 22°C 0mm 1.6kPa 24134m 3.8m/s 1.7m/s
11:00
26% 7°C 0mm 33% 0cm 54° 24°C 0mm 2kPa 24134m 4.8m/s 1.9m/s
12:00
21% 6.4°C 0mm 29% 0cm 65° 26°C 0mm 2.3kPa 24135m 5.1m/s 2.3m/s
13:00
16% 5.8°C 0mm 26% 0cm 73° 27°C 0mm 2.6kPa 24134m 5.2m/s 2.6m/s
14:00
11% 5.7°C 0mm 25% 0cm 73° 27°C 0mm 2.7kPa 24135m 5.1m/s 2.8m/s
15:00
8% 5.9°C 0mm 25% 0cm 65° 27°C 0mm 2.7kPa 24134m 4.7m/s 3m/s
16:00
6% 6.2°C 0mm 26% 0cm 53° 27°C 0mm 2.6kPa 24134m 4m/s 3.2m/s
17:00
3% 6.6°C 0mm 28% 0cm 41° 26°C 0mm 2.5kPa 24135m 3.2m/s 3.2m/s
18:00
3% 8.1°C 0mm 34% 0cm 29° 25°C 0mm 2.1kPa 24135m 2.6m/s 2.8m/s
19:00
2% 12°C 0mm 54% 0cm 17° 22°C 0mm 1.2kPa 24134m 2.7m/s 1.9m/s
20:00
2% 12°C 0mm 64% 0cm 5.5° 19°C 0mm 0.79kPa 24134m 1.7m/s 1.9m/s
21:00
2% 10°C 0mm 62% 0cm -5.7° 18°C 0mm 0.76kPa 24135m 1.7m/s 1.8m/s
22:00
3% 9.7°C 0mm 65% 0cm -16° 16°C 0mm 0.65kPa 24135m 1.9m/s 2m/s
23:00
3% 9.1°C 0mm 64% 0cm -24° 16°C 0mm 0.64kPa 24135m 1.7m/s 1.9m/s
Wed, May 20 Sunrise 06:23 Sunset 20:33
24:00
4% 8.6°C 0mm 60% 0cm -31° 16°C 0mm 0.73kPa 24135m 1.8m/s 2m/s
01:00
4% 8.2°C 0mm 56% 0cm -34° 17°C 0mm 0.84kPa 24135m 2.1m/s 1.9m/s
02:00
5% 7.8°C 0mm 57% 0cm -34° 16°C 0mm 0.81kPa 24134m 1.8m/s 1.9m/s
03:00
10% 7.6°C 0mm 57% 0cm -30° 16°C 0mm 0.8kPa 24134m 2.5m/s 2.1m/s
04:00
16% 7.6°C 0mm 60% 0cm -24° 15°C 0mm 0.68kPa 24134m 1.8m/s 1.9m/s
05:00
21% 7.7°C 0mm 61% 0cm -15° 15°C 0mm 0.67kPa 24135m 2.3m/s 2.1m/s
06:00
20% 8°C 0mm 64% 0cm -5.1° 15°C 0mm 0.61kPa 24135m 2.3m/s 2.1m/s
07:00
18% 9.1°C 0mm 68% 0cm 6.1° 15°C 0mm 0.53kPa 24135m 2.3m/s 2m/s
08:00
17% 11°C 0mm 67% 0cm 18° 17°C 0mm 0.65kPa 24134m 2.8m/s 1.8m/s
09:00
23% 11°C 0mm 53% 0cm 30° 21°C 0mm 1.2kPa 24135m 3.4m/s 1.8m/s
10:00
28% 11°C 0mm 47% 0cm 42° 23°C 0mm 1.5kPa 24135m 3.5m/s 1.9m/s
11:00
34% 12°C 0mm 45% 0cm 54° 24°C 0mm 1.7kPa 24134m 2.5m/s 1.8m/s
12:00
32% 11°C 0mm 40% 0cm 65° 26°C 0mm 2kPa 24135m 2.5m/s 1.8m/s
13:00
31% 11°C 0mm 39% 0cm 73° 25°C 0mm 2kPa 24135m 2.7m/s 2.6m/s
14:00
29% 11°C 0mm 45% 0cm 73° 24°C 0mm 1.6kPa 24134m 2.3m/s 2.2m/s
15:00
21% 14°C 0.06mm 62% 0cm 65° 21°C 0.6mm 0.96kPa 20083m 2.1m/s 1.9m/s
16:00
12% 15°C 0.11mm 79% 0cm 53° 18°C 1.2mm 0.45kPa 16032m 1.9m/s 1.7m/s
17:00
4% 15°C 0.17mm 96% 0cm 41° 16°C 1.8mm 0.07kPa 11980m 1.7m/s 1.4m/s
18:00
3% 15°C 0.11mm 96% 0cm 29° 16°C 2mm 0.07kPa 16032m 1.5m/s 1.3m/s
19:00
2% 15°C 0.06mm 96% 0cm 17° 16°C 2.2mm 0.07kPa 20084m 1.3m/s 1.2m/s
20:00
1% 15°C 0mm 96% 0cm 5.6° 15°C 2.4mm 0.06kPa 24135m 1.1m/s 1.1m/s
21:00
3% 14°C 0mm 96% 0cm -5.5° 15°C 1.6mm 0.07kPa 24135m 1.3m/s 1.3m/s
22:00
6% 14°C 0mm 95% 0cm -16° 15°C 0.88mm 0.08kPa 24135m 1.4m/s 1.4m/s
23:00
8% 13°C 0mm 95% 0cm -24° 14°C 0.13mm 0.08kPa 24135m 1.5m/s 1.6m/s
Thu, May 21 Sunrise 06:23 Sunset 20:34
24:00
9% 14°C 0mm 95% 0cm -30° 15°C 0.23mm 0.09kPa 24135m 1.6m/s 1.4m/s
01:00
11% 15°C 0mm 94% 0cm -34° 16°C 0.33mm 0.1kPa 24135m 1.6m/s 1.3m/s
02:00
12% 15°C 0mm 94% 0cm -34° 16°C 0.44mm 0.11kPa 24135m 1.6m/s 1.1m/s
03:00
19% 16°C 0mm 89% 0cm -30° 18°C 0.85mm 0.21kPa 20232m 2.4m/s 1.4m/s
04:00
26% 16°C 0mm 85% 0cm -24° 19°C 1.3mm 0.34kPa 16329m 3.1m/s 1.6m/s
05:00
33% 17°C 0mm 80% 0cm -15° 20°C 1.7mm 0.48kPa 12426m 3.8m/s 1.8m/s
06:00
29% 16°C 0.07mm 74% 0cm -4.9° 21°C 2.3mm 0.64kPa 15840m 4.2m/s 1.9m/s
07:00
25% 15°C 0.14mm 68% 0cm 6.2° 21°C 2.9mm 0.8kPa 19253m 4.6m/s 2m/s
08:00
21% 14°C 0.21mm 62% 0cm 18° 21°C 3.6mm 0.97kPa 22667m 4.9m/s 2.1m/s
09:00
19% 14°C 0.14mm 60% 0cm 30° 22°C 2.8mm 1.1kPa 23156m 4.6m/s 1.9m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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