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Rule Fog Hunter

Banner Elk - Fog Hunter - Smoky Mountains & Blue Ridge

Banner Elk, North Carolina, United States

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread1.1°C
Visibility266 (Fog)
Relative Humidity92%
Wind Speed9.6m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/New_York
fog weather icon
Next opportunity
Dense Fog (lingering)
Banner Elk
Thu, Feb 26 · 03:00–04:00 · 1h window
Medium confidence
66%
🌫️Fog Probability100%
Dewpoint Spread: 0.0°C
Visibility: 54 (Dense fog)
Relative Humidity: 100%
Wind Speed: 2.0m/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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/New_York
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sat, Feb 21
20:000%3°C24135m0.62m/s
21:000%2.7°C24134m1.2m/s
22:000%2.6°C24135m1m/s
23:000%1.9°C24134m2.2m/s
Sun, Feb 22
24:000%1.5°C24135m2.4m/s
01:000%1.2°C23540m3.5m/s
02:000%1.2°C23752m3.6m/s
03:0058%0.9°C10481m3.5m/s
04:0052%0.8°C2149m4m/s
05:0065%0.8°C309m4.3m/s
06:0034%0.6°C177m4.2m/s
07:0037%1.2°C249m4.5m/s
08:0047%0.7°C163m3.8m/s
09:000%1.7°C664m4.7m/s
10:000%2.2°C743m5m/s
11:000%2.7°C1107m5.6m/s
12:000%3.3°C1469m6.5m/s
13:000%3.8°C2743m7.4m/s
14:000%3.6°C2921m8.1m/s
15:000%3°C1227m8.1m/s
16:000%2.1°C455m7.6m/s
17:000%1.4°C209m6.9m/s
18:000%1°C153m6.8m/s
19:000%1°C163m7.5m/s
20:000%1.1°C198m8.9m/s
21:000%1.1°C266m9.6m/s
22:000%1.3°C359m9.8m/s
23:000%1.1°C262m8.8m/s
Mon, Feb 23
24:000%1.1°C177m7.4m/s
01:000%1.3°C192m7m/s
02:000%1.1°C163m7m/s
03:000%0.9°C158m6.8m/s
04:000%1°C176m7m/s
05:000%1°C177m7.2m/s
06:000%1°C200m8m/s
07:000%1°C263m8.2m/s
08:000%1.2°C350m8.4m/s
09:000%1.5°C435m8.6m/s
10:000%1.9°C361m8.6m/s
11:000%2.2°C429m8.5m/s
12:000%2.6°C932m8.4m/s
13:000%2.9°C1855m8.1m/s
14:000%3°C2425m7.7m/s
15:000%2.6°C1786m7.3m/s
16:000%2°C666m7.2m/s
17:000%1.3°C291m7.1m/s
18:000%0.9°C178m6.7m/s
19:000%0.9°C195m7m/s
20:000%0.9°C284m7m/s
21:000%1°C482m7.1m/s
22:000%0.9°C417m6.9m/s
23:000%0.7°C325m6.5m/s
Tue, Feb 24
24:0033%0.8°C420m5.8m/s
01:0033%0.7°C254m5.7m/s
02:0065%0.9°C415m5.2m/s
03:0065%0.8°C659m4.7m/s
04:0039%0.6°C2337m3.7m/s
05:0040%0.5°C2825m3.4m/s
06:0045%0.4°C1878m3.1m/s
07:0053%0.4°C1921m2.8m/s
08:0088%0.7°C3007m2.6m/s
09:000%1.9°C12527m2.9m/s
10:000%3.3°C24134m2.6m/s
11:000%4.5°C24134m2.2m/s
12:000%5.3°C24134m2.1m/s
13:000%5.7°C24134m2.2m/s
14:000%5.8°C24135m2.4m/s
15:000%6°C24135m2.1m/s
16:000%5.8°C24134m1.6m/s
17:000%5.2°C24134m1.6m/s
18:000%1.3°C24135m1m/s
19:0060%0.8°C24134m0.45m/s
20:0060%0.7°C24135m0.84m/s
21:0060%0.9°C24135m1.1m/s
22:000%1.5°C24134m1.1m/s
23:000%1.8°C24135m0.92m/s
Wed, Feb 25
24:000%2.5°C24134m1m/s
01:000%2°C24135m1.1m/s
02:000%2.7°C24135m2.4m/s
03:000%3.4°C24135m3.6m/s
04:000%4.2°C24135m4.9m/s
05:000%3.8°C24135m4.6m/s
06:000%3.5°C24135m4.3m/s
07:000%3.1°C24135m4m/s
08:000%2.8°C24135m3.6m/s
09:000%2.5°C24135m3.3m/s
10:000%2.2°C24135m3m/s
11:000%1.5°C19488m2.5m/s
12:0054%1°C14842m2.1m/s
13:0060%0.5°C10195m1.6m/s
14:0060%0.4°C14842m1.4m/s
15:0053%0.4°C19488m1.2m/s
16:0051%0.5°C24135m0.97m/s
17:0067%0.5°C24135m0.88m/s
18:0032%0.5°C24135m0.78m/s
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
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Sun, Feb 22 Sunrise 07:05 Sunset 18:16
21:00
-9.3°C 0.24mm 92% 0.25cm -8.2°C 0.75mm 0.03kPa 18m/s
22:00
-10°C 0.16mm 90% 0.17cm -8.7°C 1mm 0.03kPa 18m/s
23:00
-10°C 0.16mm 92% 0.16cm -8.9°C 1.2mm 0.03kPa 18m/s
Mon, Feb 23 Sunrise 07:05 Sunset 18:16
24:00
-10°C 0.23mm 92% 0.23cm -9.2°C 1.4mm 0.03kPa 16m/s
01:00
-11°C 0.27mm 90% 0.27cm -9.5°C 1.7mm 0.03kPa 16m/s
02:00
-11°C 0.33mm 92% 0.33cm -9.6°C 0.31mm 0.02kPa 16m/s
03:00
-11°C 0.32mm 93% 0.32cm -9.7°C 0.69mm 0.02kPa 16m/s
04:00
-11°C 0.28mm 93% 0.28cm -9.8°C 1mm 0.02kPa 16m/s
05:00
-11°C 0.26mm 93% 0.26cm -9.9°C 1.3mm 0.02kPa 17m/s
06:00
-11°C 0.22mm 92% 0.22cm -10°C 1.6mm 0.02kPa 17m/s
07:00
-11°C 0.18mm 92% 0.18cm -10°C 1.8mm 0.02kPa 17m/s
08:00
-11°C 0.14mm 91% 0.14cm -10°C 0.19mm 0.03kPa 18m/s
09:00
-11°C 0.15mm 89% 0.15cm -9.1°C 0.31mm 0.04kPa 18m/s
10:00
-9.9°C 0.21mm 86% 0.21cm -8°C 0.56mm 0.05kPa 18m/s
11:00
-9.2°C 0.18mm 85% 0.2cm -7°C 0.81mm 0.06kPa 17m/s
12:00
-8.8°C 0.11mm 82% 0.18cm -6.2°C 1mm 0.07kPa 16m/s
13:00
-8.5°C 0.05mm 80% 0.13cm -5.6°C 1.2mm 0.08kPa 15m/s
14:00
-8.6°C 0.05mm 79% 0.1cm -5.6°C 0.13mm 0.08kPa 14m/s
15:00
-8.2°C 0.06mm 82% 0.13cm -5.6°C 0.25mm 0.07kPa 14m/s
16:00
-8.1°C 0.1mm 85% 0.18cm -6.1°C 0.44mm 0.06kPa 15m/s
17:00
-7.9°C 0.2mm 90% 0.24cm -6.6°C 0.69mm 0.04kPa 15m/s
18:00
-8.2°C 0.25mm 93% 0.26cm -7.3°C 1mm 0.02kPa 15m/s
19:00
-8.7°C 0.21mm 93% 0.21cm -7.8°C 1.3mm 0.02kPa 15m/s
20:00
-9.1°C 0.13mm 93% 0.13cm -8.2°C 0.19mm 0.02kPa 15m/s
21:00
-9.6°C 0.08mm 93% 0.08cm -8.6°C 0.31mm 0.02kPa 16m/s
22:00
-9.8°C 0.11mm 94% 0.11cm -8.9°C 0.44mm 0.02kPa 15m/s
23:00
-9.8°C 0.14mm 94% 0.14cm -9.1°C 0.56mm 0.02kPa 14m/s
Tue, Feb 24 Sunrise 07:04 Sunset 18:17
24:00
-10°C 0.09mm 94% 0.09cm -9.3°C 0.75mm 0.02kPa 13m/s
01:00
-10°C 0.14mm 95% 0.14cm -9.8°C 0.88mm 0.02kPa 13m/s
02:00
-11°C 0.08mm 94% 0.08cm -9.7°C 0.13mm 0.02kPa 12m/s
03:00
-11°C 0.06mm 94% 0.06cm -10°C 0.19mm 0.02kPa 11m/s
04:00
-11°C 0.02mm 95% 0cm -11°C 0.25mm 0.01kPa 9.9m/s
05:00
-12°C 0.02mm 96% 0.02cm -11°C 0.25mm 0.01kPa 9.1m/s
06:00
-12°C 0.03mm 97% 0.03cm -12°C 0.31mm 0.01kPa 8.3m/s
07:00
-12°C 0.02mm 97% 0.02cm -12°C 0.31mm 0.01kPa 5.7m/s
08:00
-11°C 0.02mm 95% 0.02cm -11°C 0mm 0.01kPa 5.8m/s
09:00
-11°C 0.01mm 86% 0cm -8.7°C 0.06mm 0.04kPa 5.7m/s
10:00
-10°C 0mm 78% 0cm -6.7°C 0.06mm 0.08kPa 5.1m/s
11:00
-9.1°C 0mm 71% 0cm -4.6°C 0.06mm 0.13kPa 4.3m/s
12:00
-8.4°C 0mm 67% 0cm -3.1°C 0.06mm 0.16kPa 3.7m/s
13:00
-7.6°C 0mm 65% 0cm -1.9°C 0.06mm 0.18kPa 4.2m/s
14:00
-6.9°C 0mm 65% 0cm -1.1°C 0mm 0.2kPa 4.7m/s
15:00
-6.3°C 0mm 64% 0cm -0.33°C 0mm 0.22kPa 4.5m/s
16:00
-5.9°C 0mm 65% 0cm -0.05°C 0mm 0.22kPa 3.4m/s
17:00
-5°C 0mm 68% 0cm 0.15°C 0mm 0.2kPa 3.1m/s
18:00
-4.8°C 0mm 91% 0cm -3.5°C 0mm 0.04kPa 0.91m/s
19:00
-7.2°C 0mm 94% 0cm -6.4°C 0mm 0.02kPa 0.7m/s
20:00
-7.3°C 0mm 95% 0cm -6.6°C 0mm 0.02kPa 0.91m/s
21:00
-6.9°C 0mm 93% 0cm -6°C 0mm 0.03kPa 1.1m/s
22:00
-6.4°C 0mm 89% 0cm -4.9°C 0mm 0.05kPa 1.1m/s
23:00
-6.3°C 0mm 87% 0cm -4.5°C 0mm 0.06kPa 1m/s
Wed, Feb 25 Sunrise 07:03 Sunset 18:18
24:00
-5.4°C 0mm 83% 0cm -2.9°C 0mm 0.08kPa 1m/s
01:00
-5.9°C 0mm 86% 0cm -3.9°C 0mm 0.07kPa 1.1m/s
02:00
-3.3°C 0mm 82% 0cm -0.6°C 0mm 0.11kPa 6.1m/s
03:00
-0.7°C 0mm 78% 0cm 2.7°C 0mm 0.16kPa 11m/s
04:00
1.8°C 0mm 74% 0cm 6°C 0mm 0.24kPa 16m/s
05:00
2.3°C 0mm 76% 0cm 6.1°C 0mm 0.22kPa 15m/s
06:00
2.8°C 0mm 78% 0cm 6.3°C 0mm 0.21kPa 14m/s
07:00
3.3°C 0mm 80% 0cm 6.4°C 0mm 0.19kPa 13m/s
08:00
3.6°C 0mm 82% 0cm 6.4°C 0mm 0.17kPa 13m/s
09:00
3.9°C 0mm 84% 0cm 6.4°C 0mm 0.15kPa 13m/s
10:00
4.2°C 0mm 86% 0cm 6.4°C 0mm 0.13kPa 13m/s
11:00
4°C 0mm 90% 0cm 5.5°C 0mm 0.09kPa 9.3m/s
12:00
3.7°C 0mm 93% 0cm 4.7°C 0mm 0.06kPa 5.9m/s
13:00
3.4°C 0mm 97% 0cm 3.9°C 0mm 0.02kPa 2.5m/s
14:00
3.5°C 0.003mm 97% 0cm 3.9°C 0mm 0.03kPa 2m/s
15:00
3.6°C 0.007mm 97% 0cm 4°C 0mm 0.03kPa 1.4m/s
16:00
3.6°C 0.01mm 97% 0cm 4.1°C 0mm 0.03kPa 0.91m/s
17:00
3.8°C 0.06mm 97% 0cm 4.3°C 0.17mm 0.03kPa 0.91m/s
18:00
3.9°C 0.11mm 96% 0cm 4.4°C 0.33mm 0.03kPa 0.91m/s
19:00
4°C 0.16mm 96% 0cm 4.6°C 0.5mm 0.03kPa 0.9m/s
20:00
4.1°C 0.11mm 97% 0cm 4.5°C 0.44mm 0.02kPa 1.3m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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