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Rule Fog Hunter

Brevard - Fog Hunter - Smoky Mountains & Blue Ridge

Brevard, 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 · ≥ 85.0% Dewpoint Spread · ≤ 2.0°C Visibility · ≤ 3000.0m Wind Speed · ≤ 2.0m/s

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
Dewpoint Spread 100% failing
Visibility 100% failing

Currently

Real-time conditions
Dewpoint Spread12.0°C
Visibility24134 (Clear)
Relative Humidity40%
Wind Speed7.2m/s (moderate winds)

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
2matching hours in the next 95 hoursJump to next match
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
14:000%1.6°C22373m1.6m/s
15:000%1.5°C22116m1.5m/s
16:000%1.6°C22298m1.9m/s
17:000%0.8°C20972m1.8m/s
18:00100%0.5°C959m1.7m/s
19:00100%0.3°C397m1.5m/s
20:0064%0.6°C24135m0.71m/s
21:0067%0.4°C24134m1m/s
22:0067%0.5°C24135m0.6m/s
23:0067%0.4°C24134m1.1m/s
Sun, Feb 22
24:0067%0.4°C22979m0.85m/s
01:0036%0.7°C10103m2.2m/s
02:000%1.2°C22966m2m/s
03:000%1.5°C22921m2.7m/s
04:000%1.4°C22863m2.8m/s
05:000%1.4°C24135m2.8m/s
06:000%2.3°C24135m3.2m/s
07:000%3°C24134m2.8m/s
08:000%2.7°C24135m2.4m/s
09:000%5.5°C24135m3.2m/s
10:000%8.4°C24135m3.5m/s
11:000%12°C24135m4.3m/s
12:000%14°C24135m5.2m/s
13:000%14°C24135m6.3m/s
14:000%12°C24134m7.2m/s
15:000%10°C24134m7.9m/s
16:000%8.6°C23432m7.4m/s
17:000%7.5°C24135m7.3m/s
18:000%6.5°C24135m6.6m/s
19:000%5.8°C23515m6.9m/s
20:000%6°C24135m5.7m/s
21:000%6.2°C24135m3m/s
22:000%6.3°C24135m1.6m/s
23:000%6.1°C24134m0.89m/s
Mon, Feb 23
24:000%6.7°C24135m1.3m/s
01:000%7°C24134m2.2m/s
02:000%7.4°C24135m2.4m/s
03:000%7.5°C24134m1.8m/s
04:000%7.5°C24135m1.5m/s
05:000%7.5°C24134m1.8m/s
06:000%7.4°C24134m1.9m/s
07:000%7.2°C24135m1.5m/s
08:000%8.5°C24134m2.4m/s
09:000%10°C24135m3.6m/s
10:000%12°C24135m3.5m/s
11:000%14°C24134m3.5m/s
12:000%16°C24134m3.9m/s
13:000%16°C24134m4.7m/s
14:000%16°C24135m4.4m/s
15:000%15°C24135m4.7m/s
16:000%13°C24135m4.6m/s
17:000%12°C24135m3.8m/s
18:000%8.7°C24134m2.7m/s
19:000%6.7°C24135m2.5m/s
20:000%5.9°C24134m2.2m/s
21:000%5.5°C24135m2.1m/s
22:000%5.1°C24135m1.9m/s
23:000%4.6°C24135m1.4m/s
Tue, Feb 24
24:000%4.2°C24135m1.3m/s
01:000%3.8°C24135m1m/s
02:000%3.6°C24134m1.2m/s
03:000%3.3°C24134m1.3m/s
04:000%3.3°C24135m1.4m/s
05:000%3.5°C24135m1.2m/s
06:000%3.7°C24134m1.5m/s
07:000%4.4°C24135m1.5m/s
08:000%6.6°C24134m1.5m/s
09:000%10°C24135m1.4m/s
10:000%15°C24135m1m/s
11:000%18°C24134m0.33m/s
12:000%19°C24135m1.2m/s
13:000%21°C24135m2m/s
14:000%22°C24134m2.9m/s
15:000%22°C24134m3.5m/s
16:000%20°C24134m2.9m/s
17:000%16°C24134m2m/s
18:000%11°C24134m1.9m/s
19:000%9.3°C24135m2.1m/s
20:000%8.9°C24135m3.1m/s
21:000%8.5°C24135m4.1m/s
22:000%8.2°C24135m5.1m/s
23:000%7.5°C24135m4.8m/s
Wed, Feb 25
24:000%6.8°C24135m4.5m/s
01:000%6.2°C24135m4.3m/s
02:000%6.9°C24135m4.7m/s
03:000%7.8°C24135m5m/s
04:000%8.7°C24135m5.4m/s
05:000%9.1°C24135m5.8m/s
06:000%9.7°C24135m6.3m/s
07:000%10°C24135m6.7m/s
08:000%8.7°C24135m6.9m/s
09:000%7.3°C24135m7m/s
10:000%6.1°C24135m7.2m/s
11:000%5.1°C24135m6.3m/s
12:000%4.3°C24135m5.3m/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 07:09 Sunset 18:19
14:00
-11°C 0mm 40% 0cm 1.3°C 0mm 0.4kPa 13m/s
15:00
-10°C 0mm 47% 0cm -0.01°C 0mm 0.33kPa 14m/s
16:00
-9.1°C 0mm 52% 0cm -0.5°C 0mm 0.28kPa 15m/s
17:00
-9.5°C 0mm 56% 0cm -2°C 0mm 0.23kPa 15m/s
18:00
-11°C 0mm 61% 0cm -4.1°C 0mm 0.18kPa 16m/s
19:00
-11°C 0mm 64% 0cm -5°C 0mm 0.15kPa 17m/s
20:00
-11°C 0mm 63% 0cm -5.2°C 0mm 0.16kPa 16m/s
21:00
-12°C 0mm 61% 0cm -5.5°C 0mm 0.16kPa 11m/s
22:00
-12°C 0mm 61% 0cm -5.7°C 0mm 0.16kPa 6.5m/s
23:00
-12°C 0mm 62% 0cm -5.9°C 0mm 0.15kPa 6m/s
Mon, Feb 23 Sunrise 07:08 Sunset 18:20
24:00
-13°C 0mm 59% 0cm -6°C 0mm 0.16kPa 4.7m/s
01:00
-13°C 0mm 57% 0cm -6.3°C 0mm 0.16kPa 5m/s
02:00
-14°C 0mm 56% 0cm -6.5°C 0mm 0.17kPa 6.1m/s
03:00
-14°C 0mm 55% 0cm -6.8°C 0mm 0.16kPa 6.1m/s
04:00
-14°C 0mm 55% 0cm -6.9°C 0mm 0.16kPa 5.7m/s
05:00
-14°C 0mm 55% 0cm -6.9°C 0mm 0.16kPa 7.8m/s
06:00
-14°C 0mm 55% 0cm -7.1°C 0mm 0.16kPa 8.6m/s
07:00
-14°C 0mm 56% 0cm -7.2°C 0mm 0.16kPa 8.7m/s
08:00
-15°C 0mm 51% 0cm -6.1°C 0mm 0.19kPa 11m/s
09:00
-15°C 0mm 44% 0cm -4.3°C 0mm 0.25kPa 12m/s
10:00
-15°C 0mm 38% 0cm -2.4°C 0mm 0.32kPa 12m/s
11:00
-14°C 0mm 34% 0cm -0.58°C 0mm 0.39kPa 11m/s
12:00
-15°C 0mm 30% 0cm 0.38°C 0mm 0.44kPa 9.2m/s
13:00
-16°C 0mm 29% 0cm 0.19°C 0mm 0.44kPa 8.9m/s
14:00
-15°C 0mm 30% 0cm 0.23°C 0mm 0.44kPa 7.8m/s
15:00
-15°C 0mm 32% 0cm 0.06°C 0mm 0.42kPa 8.2m/s
16:00
-14°C 0mm 36% 0cm -0.72°C 0mm 0.37kPa 8.3m/s
17:00
-13°C 0mm 41% 0cm -1.6°C 0mm 0.32kPa 8m/s
18:00
-12°C 0mm 51% 0cm -3.6°C 0mm 0.23kPa 6.8m/s
19:00
-12°C 0mm 59% 0cm -5.3°C 0mm 0.17kPa 4.9m/s
20:00
-12°C 0mm 63% 0cm -5.9°C 0mm 0.15kPa 4.4m/s
21:00
-12°C 0mm 65% 0cm -6.2°C 0mm 0.14kPa 4.4m/s
22:00
-12°C 0mm 67% 0cm -6.5°C 0mm 0.12kPa 3.8m/s
23:00
-11°C 0mm 70% 0cm -6.8°C 0mm 0.11kPa 2.6m/s
Tue, Feb 24 Sunrise 07:06 Sunset 18:21
24:00
-11°C 0mm 72% 0cm -7.1°C 0mm 0.1kPa 1.9m/s
01:00
-11°C 0mm 74% 0cm -7.3°C 0mm 0.09kPa 1.1m/s
02:00
-11°C 0mm 76% 0cm -7.6°C 0mm 0.08kPa 1.2m/s
03:00
-11°C 0mm 77% 0cm -7.7°C 0mm 0.08kPa 1.4m/s
04:00
-11°C 0mm 77% 0cm -7.9°C 0mm 0.08kPa 1.8m/s
05:00
-11°C 0mm 76% 0cm -7.9°C 0mm 0.08kPa 1.3m/s
06:00
-12°C 0mm 75% 0cm -7.9°C 0mm 0.08kPa 1.6m/s
07:00
-12°C 0mm 71% 0cm -7.6°C 0mm 0.1kPa 1.9m/s
08:00
-13°C 0mm 59% 0cm -6°C 0mm 0.16kPa 2m/s
09:00
-13°C 0mm 44% 0cm -3.1°C 0mm 0.27kPa 1.8m/s
10:00
-14°C 0mm 32% 0cm 0.09°C 0mm 0.42kPa 1.4m/s
11:00
-15°C 0mm 26% 0cm 3.2°C 0mm 0.57kPa 1.4m/s
12:00
-15°C 0mm 23% 0cm 4.6°C 0mm 0.65kPa 2.4m/s
13:00
-15°C 0mm 21% 0cm 6°C 0mm 0.74kPa 4.6m/s
14:00
-15°C 0mm 19% 0cm 7.2°C 0mm 0.82kPa 6m/s
15:00
-14°C 0mm 20% 0cm 7.4°C 0mm 0.83kPa 7m/s
16:00
-13°C 0mm 23% 0cm 6.8°C 0mm 0.76kPa 6.1m/s
17:00
-10°C 0mm 31% 0cm 5.9°C 0mm 0.64kPa 4.2m/s
18:00
-9.1°C 0mm 44% 0cm 2°C 0mm 0.4kPa 1.7m/s
19:00
-9.6°C 0mm 49% 0cm -0.31°C 0mm 0.3kPa 1.8m/s
20:00
-8.4°C 0mm 51% 0cm 0.54°C 0mm 0.31kPa 5.7m/s
21:00
-7.1°C 0mm 53% 0cm 1.4°C 0mm 0.32kPa 9.7m/s
22:00
-5.9°C 0mm 55% 0cm 2.3°C 0mm 0.32kPa 14m/s
23:00
-5.5°C 0mm 58% 0cm 2°C 0mm 0.3kPa 12m/s
Wed, Feb 25 Sunrise 07:05 Sunset 18:22
24:00
-5.1°C 0mm 61% 0cm 1.7°C 0mm 0.27kPa 11m/s
01:00
-4.8°C 0mm 64% 0cm 1.4°C 0mm 0.25kPa 10m/s
02:00
-3.8°C 0mm 60% 0cm 3.1°C 0mm 0.3kPa 9.7m/s
03:00
-2.9°C 0mm 57% 0cm 4.9°C 0mm 0.37kPa 9.3m/s
04:00
-2.1°C 0mm 54% 0cm 6.6°C 0mm 0.45kPa 8.9m/s
05:00
0°C 0mm 53% 0cm 9.1°C 0mm 0.55kPa 9.7m/s
06:00
2°C 0mm 51% 0cm 12°C 0mm 0.67kPa 11m/s
07:00
3.9°C 0mm 50% 0cm 14°C 0mm 0.81kPa 11m/s
08:00
5°C 0mm 56% 0cm 14°C 0mm 0.7kPa 11m/s
09:00
5.9°C 0mm 61% 0cm 13°C 0mm 0.59kPa 11m/s
10:00
6.7°C 0mm 67% 0cm 13°C 0mm 0.49kPa 12m/s
11:00
6.7°C 0mm 71% 0cm 12°C 0mm 0.4kPa 12m/s
12:00
6.6°C 0mm 75% 0cm 11°C 0mm 0.33kPa 12m/s
13:00
6.5°C 0mm 79% 0cm 9.9°C 0mm 0.25kPa 12m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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