Skip to content
✨ New: PhotoWeather is now available on iOS and Android
Rule Fog Hunter

Sylva - Fog Hunter - Smoky Mountains & Blue Ridge

Sylva, North Carolina, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread19.2°C
Visibility24134 (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
fog weather icon
Next opportunity
Dense Fog
Sylva
Sat, Apr 25 · 17:00–19:00 · 2h window
High confidence
70%
🌫️Fog Probability81.7-85.6%
Dewpoint Spread: 0.2°C
Visibility: 7391 (Moderate)
Relative Humidity: 99%
Wind Speed: 0.9m/s (calm conditions)
fog weather icon
Dense Fog at Sunset
Sylva
Sat, Apr 25 · 19:00–21:00
🌫️Fog Probability:97.3%
High
fog weather icon
Dense Fog
Sylva
Sat, Apr 25 · 21:00–03:00
🌫️Fog Probability:62.7-88.6%
Medium
fog weather icon
Moderate Fog at Sunset
Sylva
Sun, Apr 26 · 20:00–21:00
🌫️Fog Probability:79.7%
Medium
fog weather icon
Dense Fog
Sylva
Sun, Apr 26 · 21:00–24:00
🌫️Fog Probability:84.8-88.6%
High
fog weather icon
Moderate Fog
Sylva
Tue, Apr 28 · 17:00–19:00
🌫️Fog Probability:63.8%
Low
fog weather icon
Moderate Fog at Sunset
Sylva
Tue, Apr 28 · 19:00–21:00
🌫️Fog Probability:62.7-74.6%
Low
+2 more windows in the next 10 days

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.

Create your own Fog Hunter alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 60.0%
Mon, Apr 20
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Tue, Apr 21
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%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Apr 22
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%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Apr 23
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%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Fri, Apr 24
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%
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
Tue, Apr 21 Sunrise 06:53 Sunset 20:10
15:00
68% 1.4°C 0mm 28% 0cm 59° 21°C 0mm 1.8kPa 24134m 3.8m/s 2.1m/s
16:00
36% 1.6°C 0mm 28% 0cm 49° 21°C 0mm 1.8kPa 24134m 3.9m/s 1.9m/s
17:00
5% 2.1°C 0mm 30% 0cm 38° 20°C 0mm 1.7kPa 24134m 4m/s 2.1m/s
18:00
8% 3.1°C 0mm 34% 0cm 26° 19°C 0mm 1.5kPa 24134m 4.1m/s 2.7m/s
19:00
10% 6°C 0mm 49% 0cm 13° 17°C 0mm 0.98kPa 24135m 5.1m/s 2.4m/s
20:00
13% 5.8°C 0mm 64% 0cm 1.6° 12°C 0mm 0.51kPa 24134m 1.8m/s 2.1m/s
21:00
12% 4.8°C 0mm 69% 0cm -10° 10°C 0mm 0.39kPa 24135m 1.8m/s 2.1m/s
22:00
12% 4.1°C 0mm 69% 0cm -21° 9.5°C 0mm 0.37kPa 24134m 1.6m/s 1.8m/s
23:00
11% 3.5°C 0mm 68% 0cm -30° 9°C 0mm 0.36kPa 24135m 1.6m/s 1.7m/s
Wed, Apr 22 Sunrise 06:51 Sunset 20:11
24:00
7% 3.2°C 0mm 68% 0cm -38° 8.8°C 0mm 0.36kPa 24134m 1.4m/s 1.5m/s
01:00
4% 3°C 0mm 68% 0cm -42° 8.5°C 0mm 0.35kPa 24135m 1.2m/s 1.3m/s
02:00
0% 2.7°C 0mm 68% 0cm -42° 8.2°C 0mm 0.34kPa 24134m 0.7m/s 0.66m/s
03:00
1% 2.8°C 0mm 69% 0cm -38° 8.1°C 0mm 0.34kPa 24134m 0.4m/s 0.25m/s
04:00
1% 2.7°C 0mm 70% 0cm -31° 7.9°C 0mm 0.32kPa 24134m 0.5m/s 0.3m/s
05:00
2% 2.5°C 0mm 72% 0cm -21° 7.2°C 0mm 0.28kPa 24135m 0.7m/s 0.59m/s
06:00
5% 2.2°C 0mm 72% 0cm -11° 6.9°C 0mm 0.28kPa 24134m 0.42m/s 0.34m/s
07:00
8% 2°C 0mm 72% 0cm 1.2° 6.6°C 0mm 0.27kPa 24134m 0.5m/s 0.57m/s
08:00
11% 3.5°C 0mm 66% 0cm 13° 9.6°C 0mm 0.41kPa 24135m 0.52m/s 0.47m/s
09:00
38% 3.9°C 0mm 53% 0cm 25° 13°C 0mm 0.72kPa 24135m 1.1m/s 0.69m/s
10:00
64% 4.5°C 0mm 46% 0cm 37° 16°C 0mm 1kPa 24135m 3.1m/s 1.6m/s
11:00
91% 4°C 0mm 39% 0cm 49° 18°C 0mm 1.3kPa 24135m 5.3m/s 2.3m/s
12:00
93% 3.7°C 0mm 36% 0cm 59° 19°C 0mm 1.4kPa 24135m 5.3m/s 3m/s
13:00
94% 3.1°C 0mm 31% 0cm 66° 21°C 0mm 1.7kPa 24134m 4.5m/s 2.9m/s
14:00
96% 2.4°C 0mm 28% 0cm 66° 21°C 0mm 1.8kPa 24134m 4.7m/s 3.2m/s
15:00
90% 2.2°C 0mm 28% 0cm 60° 22°C 0mm 1.9kPa 24134m 4.6m/s 4m/s
16:00
83% 2.2°C 0mm 28% 0cm 49° 22°C 0mm 1.9kPa 24134m 4.5m/s 4m/s
17:00
77% 2.6°C 0mm 29% 0cm 38° 21°C 0mm 1.8kPa 24135m 4.3m/s 3.7m/s
18:00
74% 4.2°C 0mm 35% 0cm 26° 20°C 0mm 1.5kPa 24135m 4.4m/s 4.2m/s
19:00
71% 6°C 0mm 46% 0cm 14° 18°C 0mm 1.1kPa 24135m 7.2m/s 3.4m/s
20:00
68% 6.5°C 0mm 62% 0cm 1.8° 14°C 0mm 0.59kPa 24134m 1.2m/s 1.1m/s
21:00
74% 5.7°C 0mm 68% 0cm -10° 12°C 0mm 0.44kPa 24135m 0.71m/s 0.66m/s
22:00
79% 5.4°C 0mm 70% 0cm -21° 11°C 0mm 0.39kPa 24135m 1m/s 1m/s
23:00
85% 5.1°C 0mm 72% 0cm -30° 9.9°C 0mm 0.34kPa 24135m 0.9m/s 0.82m/s
Thu, Apr 23 Sunrise 06:50 Sunset 20:12
24:00
86% 4.9°C 0mm 74% 0cm -37° 9.3°C 0mm 0.31kPa 24135m 0.61m/s 0.52m/s
01:00
88% 4.8°C 0mm 76% 0cm -42° 8.8°C 0mm 0.28kPa 24135m 0.71m/s 0.7m/s
02:00
89% 4.8°C 0mm 77% 0cm -42° 8.5°C 0mm 0.25kPa 24135m 0.41m/s 0.36m/s
03:00
90% 4.7°C 0mm 79% 0cm -38° 8.1°C 0mm 0.22kPa 24135m 0.71m/s 0.57m/s
04:00
92% 4.8°C 0mm 81% 0cm -31° 7.9°C 0mm 0.21kPa 24134m 0.83m/s 0.8m/s
05:00
93% 4.8°C 0mm 81% 0cm -21° 7.9°C 0mm 0.21kPa 24135m 0.91m/s 0.92m/s
06:00
93% 4.8°C 0mm 81% 0cm -10° 7.9°C 0mm 0.2kPa 24135m 0.91m/s 0.97m/s
07:00
94% 4.9°C 0mm 82% 0cm 1.4° 7.8°C 0mm 0.2kPa 24135m 1m/s 1.1m/s
08:00
94% 5.9°C 0mm 72% 0cm 13° 11°C 0mm 0.36kPa 24134m 0.7m/s 0.75m/s
09:00
96% 6.4°C 0mm 58% 0cm 25° 15°C 0mm 0.69kPa 24135m 0.64m/s 0.59m/s
10:00
98% 6.2°C 0mm 48% 0cm 37° 18°C 0mm 1.1kPa 24135m 1.9m/s 1.1m/s
11:00
100% 5.3°C 0mm 40% 0cm 49° 19°C 0mm 1.4kPa 24134m 2.7m/s 1.6m/s
12:00
93% 5.2°C 0mm 36% 0cm 59° 21°C 0mm 1.6kPa 24135m 2.4m/s 1.8m/s
13:00
87% 5.2°C 0mm 33% 0cm 66° 22°C 0mm 1.8kPa 24134m 2.6m/s 1.5m/s
14:00
80% 4.7°C 0mm 31% 0cm 66° 23°C 0mm 1.9kPa 24134m 2.8m/s 1.5m/s
15:00
57% 4.3°C 0mm 30% 0cm 60° 23°C 0mm 1.9kPa 24134m 2.8m/s 2.1m/s
16:00
35% 4.6°C 0mm 34% 0cm 50° 21°C 0mm 1.7kPa 24134m 3.1m/s 2.7m/s
17:00
12% 6.3°C 0mm 41% 0cm 38° 20°C 0mm 1.4kPa 24134m 4.8m/s 2.6m/s
18:00
10% 7.1°C 0mm 47% 0cm 26° 19°C 0mm 1.1kPa 24135m 6.3m/s 2.7m/s
19:00
7% 7.5°C 0mm 53% 0cm 14° 17°C 0mm 0.93kPa 24135m 7.6m/s 2.4m/s
20:00
5% 7.5°C 0mm 62% 0cm 1.9° 15°C 0mm 0.62kPa 24135m 1m/s 0.95m/s
21:00
8% 6.8°C 0mm 67% 0cm -9.9° 13°C 0mm 0.5kPa 24135m 1.2m/s 1.2m/s
22:00
12% 6.1°C 0mm 71% 0cm -21° 11°C 0mm 0.39kPa 24135m 1.5m/s 1.5m/s
23:00
15% 5.3°C 0mm 75% 0cm -30° 9.6°C 0mm 0.3kPa 24135m 1.7m/s 1.8m/s
Fri, Apr 24 Sunrise 06:49 Sunset 20:13
24:00
14% 5.7°C 0mm 72% 0cm -37° 10°C 0mm 0.35kPa 24135m 2.1m/s 1.8m/s
01:00
12% 6°C 0mm 70% 0cm -41° 11°C 0mm 0.4kPa 24135m 2.4m/s 1.8m/s
02:00
11% 6.4°C 0mm 68% 0cm -41° 12°C 0mm 0.45kPa 24135m 2.7m/s 1.8m/s
03:00
16% 6.7°C 0mm 60% 0cm -37° 14°C 0mm 0.65kPa 24135m 3.4m/s 2.2m/s
04:00
22% 6.8°C 0mm 53% 0cm -30° 17°C 0mm 0.89kPa 24135m 4.1m/s 2.7m/s
05:00
27% 6.6°C 0mm 45% 0cm -21° 19°C 0mm 1.2kPa 24135m 4.8m/s 3.2m/s
06:00
28% 6.4°C 0mm 44% 0cm -10° 19°C 0mm 1.2kPa 24135m 4.4m/s 3.2m/s
07:00
29% 6.2°C 0mm 43% 0cm 1.6° 19°C 0mm 1.3kPa 24135m 4.1m/s 3.2m/s
08:00
30% 6°C 0mm 41% 0cm 13° 19°C 0mm 1.3kPa 24135m 3.7m/s 3.2m/s
09:00
38% 7°C 0.003mm 47% 0cm 26° 19°C 0mm 1.1kPa 24135m 4m/s 2.8m/s
10:00
46% 7.8°C 0.007mm 52% 0cm 38° 18°C 0mm 0.96kPa 24135m 4.2m/s 2.3m/s
11:00
54% 8.4°C 0.01mm 58% 0cm 49° 17°C 0mm 0.81kPa 24135m 4.4m/s 1.9m/s
12:00
42% 8.5°C 0.007mm 61% 0cm 60° 16°C 0mm 0.71kPa 24135m 3.4m/s 1.8m/s
13:00
29% 8.5°C 0.003mm 64% 0cm 67° 15°C 0mm 0.62kPa 24135m 2.5m/s 1.7m/s
14:00
17% 8.5°C 0mm 67% 0cm 67° 15°C 0mm 0.54kPa 24135m 1.5m/s 1.6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account