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Rule Fog Hunter

Sylva - Fog Hunter - Smoky Mountains & Blue Ridge

Sylva, North Carolina, United States

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 60.0%

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing

Currently

Real-time conditions
Dewpoint Spread19.7°C
Visibility24135 (Clear)
Relative Humidity28%
Wind Speed2.1m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

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 86 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 60.0%
Sat, Apr 11
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
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14:000%
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16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sun, Apr 12
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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23:000%
Mon, Apr 13
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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21:000%
22:000%
23:000%
Tue, Apr 14
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
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10:000%
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13:000%
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
Sat, Apr 11 Sunrise 07:05 Sunset 20:01
15:00
85% 3.6°C 0mm 28% 0cm 57° 23°C 0mm 2.1kPa 24135m 1.7m/s 2.1m/s
16:00
84% 3.2°C 0mm 27% 0cm 47° 23°C 0mm 2.1kPa 24134m 2.1m/s 2.2m/s
17:00
84% 3.2°C 0mm 27% 0cm 36° 23°C 0mm 2kPa 24134m 1.9m/s 2.1m/s
18:00
72% 4°C 0mm 31% 0cm 24° 22°C 0mm 1.9kPa 24134m 1.1m/s 1.1m/s
19:00
59% 7.9°C 0mm 49% 0cm 12° 19°C 0mm 1.1kPa 24135m 1.4m/s 1m/s
20:00
47% 8.1°C 0mm 61% 0cm 0.22° 16°C 0mm 0.7kPa 24134m 1.6m/s 1.4m/s
21:00
59% 7.8°C 0mm 66% 0cm -12° 14°C 0mm 0.54kPa 24135m 1.2m/s 1.2m/s
22:00
72% 7.6°C 0mm 66% 0cm -23° 14°C 0mm 0.54kPa 24135m 0.92m/s 1m/s
23:00
84% 7.3°C 0mm 68% 0cm -33° 13°C 0mm 0.49kPa 24135m 1.1m/s 1.1m/s
Sun, Apr 12 Sunrise 07:04 Sunset 20:02
24:00
87% 6.9°C 0mm 71% 0cm -41° 12°C 0mm 0.41kPa 24134m 1.1m/s 1.2m/s
01:00
90% 6.4°C 0mm 70% 0cm -45° 12°C 0mm 0.41kPa 24135m 1m/s 1.1m/s
02:00
93% 5.9°C 0mm 69% 0cm -45° 11°C 0mm 0.42kPa 24134m 1.1m/s 1.2m/s
03:00
90% 5.3°C 0mm 67% 0cm -41° 11°C 0mm 0.44kPa 24135m 1m/s 1.1m/s
04:00
87% 4.9°C 0mm 65% 0cm -34° 11°C 0mm 0.46kPa 24135m 1m/s 1.1m/s
05:00
84% 4.6°C 0mm 66% 0cm -24° 11°C 0mm 0.44kPa 24134m 1.3m/s 1.3m/s
06:00
87% 4.5°C 0mm 66% 0cm -13° 11°C 0mm 0.44kPa 24135m 1.4m/s 1.6m/s
07:00
91% 4.7°C 0mm 69% 0cm -1.5° 10°C 0mm 0.38kPa 24135m 1.4m/s 1.6m/s
08:00
94% 6.2°C 0mm 70% 0cm 11° 12°C 0mm 0.41kPa 24135m 1.4m/s 1.6m/s
09:00
92% 7.1°C 0mm 58% 0cm 23° 15°C 0mm 0.74kPa 24135m 2m/s 1.2m/s
10:00
89% 7.1°C 0mm 48% 0cm 35° 18°C 0mm 1.1kPa 24135m 3.2m/s 1.6m/s
11:00
87% 7°C 0mm 43% 0cm 46° 20°C 0mm 1.3kPa 24135m 5.1m/s 2.4m/s
12:00
85% 7°C 0mm 40% 0cm 56° 21°C 0mm 1.5kPa 24135m 5.7m/s 3.3m/s
13:00
82% 7°C 0mm 39% 0cm 62° 22°C 0mm 1.6kPa 24134m 5.6m/s 4m/s
14:00
80% 6.9°C 0mm 38% 0cm 63° 22°C 0mm 1.6kPa 24134m 5.4m/s 4.1m/s
15:00
62% 6.9°C 0mm 38% 0cm 57° 22°C 0mm 1.6kPa 24134m 5m/s 4.1m/s
16:00
44% 6.7°C 0mm 37% 0cm 47° 22°C 0mm 1.7kPa 24135m 4.9m/s 3.9m/s
17:00
26% 6.6°C 0mm 38% 0cm 36° 21°C 0mm 1.6kPa 24135m 4.7m/s 3.9m/s
18:00
23% 7°C 0mm 42% 0cm 24° 20°C 0mm 1.4kPa 24135m 4.9m/s 3.7m/s
19:00
21% 8.3°C 0mm 51% 0cm 12° 19°C 0mm 1.1kPa 24135m 6.3m/s 3.1m/s
20:00
18% 8.3°C 0mm 64% 0cm 0.36° 15°C 0mm 0.62kPa 24135m 2.2m/s 2.2m/s
21:00
15% 7.9°C 0mm 69% 0cm -12° 14°C 0mm 0.48kPa 24135m 1.8m/s 2m/s
22:00
13% 7.5°C 0mm 70% 0cm -23° 13°C 0mm 0.44kPa 24135m 1.8m/s 2.1m/s
23:00
10% 7.4°C 0mm 72% 0cm -33° 12°C 0mm 0.4kPa 24135m 2.2m/s 2.4m/s
Mon, Apr 13 Sunrise 07:03 Sunset 20:03
24:00
9% 7.8°C 0mm 76% 0cm -40° 12°C 0mm 0.34kPa 24134m 1.8m/s 2.1m/s
01:00
9% 7.7°C 0mm 77% 0cm -45° 12°C 0mm 0.32kPa 24134m 1.7m/s 1.9m/s
02:00
8% 7.6°C 0mm 77% 0cm -45° 12°C 0mm 0.31kPa 24135m 2.2m/s 2.2m/s
03:00
6% 7.7°C 0mm 78% 0cm -41° 11°C 0mm 0.29kPa 24135m 2.9m/s 2.3m/s
04:00
3% 8°C 0mm 83% 0cm -34° 11°C 0mm 0.22kPa 24134m 1.7m/s 2m/s
05:00
1% 8.1°C 0mm 86% 0cm -24° 10°C 0mm 0.17kPa 24135m 1.6m/s 1.9m/s
06:00
1% 8.2°C 0mm 90% 0cm -13° 9.9°C 0mm 0.13kPa 24134m 1.7m/s 1.9m/s
07:00
0% 8.2°C 0mm 91% 0cm -1.2° 9.5°C 0mm 0.1kPa 24135m 1.5m/s 1.6m/s
08:00
0% 8.6°C 0mm 84% 0cm 11° 11°C 0mm 0.21kPa 24135m 1.9m/s 1.3m/s
09:00
0% 8.7°C 0mm 70% 0cm 23° 14°C 0mm 0.47kPa 24135m 2.7m/s 1.3m/s
10:00
0% 8.4°C 0mm 59% 0cm 35° 16°C 0mm 0.76kPa 24135m 5m/s 1.8m/s
11:00
0% 7.6°C 0mm 50% 0cm 46° 18°C 0mm 1.1kPa 24134m 5.7m/s 2.1m/s
12:00
0% 6.4°C 0mm 42% 0cm 56° 20°C 0mm 1.3kPa 24134m 6.6m/s 3.1m/s
13:00
0% 6°C 0mm 41% 0cm 63° 20°C 0mm 1.4kPa 24135m 6.4m/s 4.2m/s
14:00
0% 6.5°C 0mm 44% 0cm 63° 19°C 0mm 1.2kPa 24135m 5.8m/s 3.7m/s
15:00
0% 6.1°C 0mm 42% 0cm 57° 19°C 0mm 1.3kPa 24134m 5.9m/s 3.4m/s
16:00
0% 5.7°C 0mm 41% 0cm 48° 19°C 0mm 1.3kPa 24135m 5m/s 2.9m/s
17:00
0% 6°C 0mm 41% 0cm 36° 20°C 0mm 1.3kPa 24134m 4.7m/s 2.7m/s
18:00
0% 7.4°C 0mm 48% 0cm 24° 19°C 0mm 1.1kPa 24135m 4.6m/s 2.6m/s
19:00
1% 8.9°C 0mm 60% 0cm 12° 17°C 0mm 0.76kPa 24135m 2.1m/s 1.5m/s
20:00
1% 8.2°C 0mm 66% 0cm 0.5° 14°C 0mm 0.55kPa 24134m 1.4m/s 1.5m/s
21:00
10% 7.8°C 0mm 70% 0cm -12° 13°C 0mm 0.45kPa 24134m 1.9m/s 1.7m/s
22:00
18% 7.4°C 0mm 74% 0cm -23° 12°C 0mm 0.36kPa 24135m 2.5m/s 2m/s
23:00
27% 6.9°C 0mm 78% 0cm -32° 11°C 0mm 0.28kPa 24135m 3m/s 2.3m/s
Tue, Apr 14 Sunrise 07:01 Sunset 20:04
24:00
30% 7.2°C 0mm 78% 0cm -40° 11°C 0mm 0.28kPa 24135m 3.3m/s 2.3m/s
01:00
33% 7.5°C 0mm 78% 0cm -45° 11°C 0mm 0.29kPa 24135m 3.6m/s 2.2m/s
02:00
36% 7.8°C 0mm 78% 0cm -45° 11°C 0mm 0.3kPa 24135m 3.9m/s 2.2m/s
03:00
41% 8.3°C 0mm 69% 0cm -41° 14°C 0mm 0.49kPa 24135m 3.8m/s 2.3m/s
04:00
45% 8.6°C 0mm 60% 0cm -33° 16°C 0mm 0.73kPa 24135m 3.7m/s 2.4m/s
05:00
50% 8.6°C 0mm 52% 0cm -24° 19°C 0mm 1kPa 24135m 3.6m/s 2.5m/s
06:00
44% 8.9°C 0mm 49% 0cm -13° 20°C 0mm 1.2kPa 24135m 3.8m/s 2.6m/s
07:00
39% 9.2°C 0mm 46% 0cm -0.89° 21°C 0mm 1.4kPa 24135m 4m/s 2.7m/s
08:00
33% 9.5°C 0mm 44% 0cm 11° 22°C 0mm 1.5kPa 24135m 4.3m/s 2.8m/s
09:00
27% 9.5°C 0.003mm 44% 0cm 23° 22°C 0mm 1.5kPa 24135m 4.1m/s 2.8m/s
10:00
22% 9.5°C 0.007mm 44% 0cm 35° 22°C 0mm 1.5kPa 24135m 4m/s 2.9m/s
11:00
16% 9.5°C 0.01mm 44% 0cm 47° 22°C 0mm 1.5kPa 24135m 3.8m/s 2.9m/s
12:00
15% 10°C 0.007mm 52% 0cm 57° 20°C 0mm 1.1kPa 24135m 3.2m/s 2.6m/s
13:00
14% 10°C 0.003mm 61% 0cm 63° 18°C 0mm 0.82kPa 24135m 2.5m/s 2.3m/s
14:00
13% 10°C 0mm 69% 0cm 64° 16°C 0mm 0.56kPa 24135m 1.8m/s 2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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