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Rule Fire Sky

Mendocino - Fire Sky - California Coast

Mendocino City, California, United States

Those rare, intensely red and orange sunset skies

Currently

Real-time conditions
Low Cloud Cover6%
Mid Cloud Cover97%
High Cloud Cover0%
Aerosol Optical Depth0.1dimensionless
Sun Elevation58.2° (Daylight)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Los_Angeles
fire-sky weather icon
Next opportunity
Excellent Fiery Red Sky at Sunrise
Mendocino
Thu, Apr 23 · 06:08–07:00 · 1h window
Medium confidence
57%
🔥Fiery Red Sky Potential80%
Low Cloud Cover: 0%
Mid Cloud Cover: 0%
High Cloud Cover: 82%
Sun Elevation: -5.6° (Civil twilight)
fire-sky weather icon
Excellent Fiery Red Sky at Sunset
Mendocino
Thu, Apr 23 · 20:00–20:18
🔥Fiery Red Sky Potential:83.3%
Medium
fire-sky weather icon
Spectacular Fiery Red Sky at Sunrise
Mendocino
Fri, Apr 24 · 06:07–07:00
🔥Fiery Red Sky Potential:90.6%
Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the spectacular sunset conditions that ignite California's coastline with dramatic color. We combine cloud coverage patterns, marine layer behavior, and atmospheric clarity to predict when Pacific sunsets will produce intense fire-sky displays.

California's coast offers fire-sky conditions when Pacific weather patterns align perfectly—usually involving clearing after storms, or when the marine layer breaks up at sunset. The dramatic topography of locations like Big Sur means sunsets can be enhanced by coastal mountains and dramatic cliff profiles.

What makes the California coast special for fire-sky photography:

  • Pacific sunset drama - Unobstructed western exposure means direct sunset over ocean
  • Marine layer burn-off - When fog clears at golden hour, moisture in air scatters light intensely
  • Big Sur cliffs - Dramatic coastal mountains silhouetted against blazing Pacific sunsets
  • Point Reyes exposure - Windswept peninsula catches full force of Pacific sunset color

Big Sur offers California's most dramatic fire-sky opportunities—when conditions align, the combination of towering coastal cliffs, crashing waves, and burning Pacific sunset creates legendary images. McWay Falls dropping onto the beach under fire-sky conditions is particularly spectacular. Point Reyes lighthouse perched on its windswept cliff becomes a dramatic silhouette when Pacific sunsets ignite. The marine layer plays a crucial role—when morning fog burns off completely but leaves moisture in the air, that moisture scatters sunset light into intense colors. Malibu's sea stacks and southern exposure can produce dramatic winter sunsets. The key is timing post-frontal clearing or marine layer dynamics. Our forecast tracks these patterns to identify when Pacific sunsets will be most dramatic. Winter storms followed by clearing provide the most intense conditions—atmospheric particulates from storm systems enhance color scattering.

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72-hour requirements breakdown

What passed or failed, hour by hour
3matching hours in the next 86 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
America/Los_Angeles
Golden Hour
Any
Fiery Red Sky Potential
≥ 65.0%
Precipitation Chance
≤ 15.0%
Visibility
≥ 8000.0m
Mon, Apr 20
21:0016%89%24135m
22:0015%94%24134m
23:0011%99%24131m
Tue, Apr 21
24:0014%96%24134m
01:008.3%97%24135m
02:007.9%98%15418m
03:008%99%15501m
04:007.3%99%14352m
05:007.5%100%14981m
06:0017%97%11454m
07:0018%94%10095m
08:0017%92%16893m
09:0021%94%10646m
10:006.5%96%10564m
11:004.9%98%14054m
12:0016%90%24134m
13:006.5%82%24134m
14:005.4%73%24134m
15:0026%80%24134m
16:006%87%24130m
17:006%93%15870m
18:006.4%87%18179m
19:006.6%81%12409m
20:0042%75%21256m
21:0018%68%21874m
22:0030%61%24116m
23:0013%54%24134m
Wed, Apr 22
24:0012%49%24134m
01:008.3%44%24134m
02:008%39%24135m
03:008.5%33%24134m
04:008.7%28%24134m
05:008.6%22%24135m
06:0030%15%24135m
07:007.4%7.4%24135m
08:006.1%0%24135m
09:004.7%0%24135m
10:004.8%0%24134m
11:007.4%0%24134m
12:0017%0%24134m
13:0011%0%24134m
14:008.8%0%24135m
15:0019%0%24135m
16:007.7%0%24135m
17:000.8%0%24134m
18:002%0%24135m
19:004.8%0%24135m
20:0062%0%24135m
21:0018%0%24135m
22:009.4%0%24135m
23:007.6%0%24135m
Thu, Apr 23
24:007.5%0%24135m
01:005.6%0%24134m
02:005.3%0%24135m
03:005.5%0%24135m
04:0011%0%24135m
05:0024%0%24134m
06:0080%0%24135m
07:0035%0%24135m
08:0031%0%24134m
09:0019%0%24135m
10:0015%0%24134m
11:0013%0%24134m
12:0012%0%24134m
13:0029%0%24134m
14:0025%0%24134m
15:0034%0%24135m
16:0034%0%24135m
17:0041%0%24135m
18:000%0%24135m
19:000%0%24135m
20:0083%0%24135m
21:000%0%24135m
22:000%0%24135m
23:000%0%24135m
Fri, Apr 24
24:000%0%24135m
01:000%0%24135m
02:000%0%24135m
03:000%0%24135m
04:000%0%24135m
05:000%0%24135m
06:0091%0%24135m
07:001.5%0%24135m
08:000%0%24135m
09:000%0%24135m
10:000%0%24135m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fiery Red Sky Potential 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/Los_Angeles
Aerosol Optical Depth (550nm)
Clear Sky Probability (Ensemble)
%
Cloud Cover Uncertainty (Ensemble)
%
Dust AOD (550nm)
Golden Hour
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
RH @ 700 hPa
%
Smoke AOD (550nm)
Solar Elevation
°
Sunshine Duration
seconds
Tue, Apr 21 Sunrise 06:29 Sunset 19:58
12:00
0.08 8% 22% 0.005 - 0% 6% 97% 60% 0.004 58° 3600seconds
13:00
0.08 13% 27% 0.005 - 0% 65% 100% 60% 0.005 63° 3600seconds
14:00
0.09 19% 31% 0.006 - 0% 76% 100% 61% 0.005 61° 3600seconds
15:00
0.08 22% 31% 0.008 - 0% 16% 100% 58% 0.006 54° 3600seconds
16:00
0.07 25% 31% 0.008 - 0% 1% 100% 55% 0.006 44° 3600seconds
17:00
0.07 28% 31% 0.007 - 0% 4% 100% 52% 0.005 33° 3600seconds
18:00
0.07 40% 33% 0.005 - 0% 3% 70% 53% 0.005 22° 3600seconds
19:00
0.06 51% 36% 0.004 - 0% 0% 5% 55% 0.005 10° 3600seconds
20:00
0.08 63% 38% 0.003 - 0% 0% 0% 56% 0.005 -0.71° 3600seconds
21:00
0.09 58% 34% 0.003 - 0% 0% 18% 63% 0.005 -12° 0seconds
22:00
0.1 54% 31% 0.003 - 0% 4% 81% 70% 0.005 -22° 0seconds
23:00
0.1 49% 27% 0.002 - 0% 5% 93% 77% 0.005 -30° 0seconds
Wed, Apr 22 Sunrise 06:28 Sunset 19:59
24:00
0.1 45% 31% 0.002 - 0% 8% 42% 76% 0.005 -36° 0seconds
01:00
0.08 42% 35% 0.003 - 0% 11% 2% 75% 0.005 -38° 0seconds
02:00
0.06 38% 39% 0.003 - 0% 7% 0% 74% 0.004 -37° 0seconds
03:00
0.05 40% 36% 0.004 - 0% 4% 0% 66% 0.004 -33° 0seconds
04:00
0.05 41% 34% 0.003 - 0% 3% 0% 58% 0.003 -26° 0seconds
05:00
0.04 43% 31% 0.003 - 0% 3% 0% 50% 0.003 -16° 0seconds
06:00
0.04 58% 31% 0.003 - 0% 3% 0% 52% 0.003 -5.9° 0seconds
07:00
0.04 72% 30% 0.003 - 0% 1% 0% 55% 0.003 5.3° 0seconds
08:00
0.04 87% 30% 0.003 - 0% 1% 0% 57% 0.003 17° 0seconds
09:00
0.04 88% 27% 0.003 - 0% 0% 0% 50% 0.004 28° 0seconds
10:00
0.04 88% 24% 0.003 - 0% 0% 0% 42% 0.004 40° 3600seconds
11:00
0.04 89% 21% 0.004 - 0% 2% 0% 35% 0.004 50° 3600seconds
12:00
0.04 92% 19% 0.004 - 0% 6% 0% 29% 0.004 59° 3600seconds
13:00
0.04 94% 17% 0.005 - 0% 4% 0% 23% 0.004 63° 3600seconds
14:00
0.04 97% 15% 0.005 - 0% 1% 4% 17% 0.004 61° 3600seconds
15:00
0.04 97% 13% 0.005 - 0% 5% 5% 17% 0.003 54° 3600seconds
16:00
0.04 97% 11% 0.006 - 0% 29% 5% 17% 0.003 45° 3600seconds
17:00
0.04 97% 9% 0.006 - 0% 70% 5% 17% 0.003 34° 3600seconds
18:00
- 96% 10% - - 0% 97% 5% 20% - 22° 3600seconds
19:00
- 96% 12% - - 0% 100% 5% 23% - 11° 3600seconds
20:00
- 95% 13% - - 0% 100% 3% 26% - -0.45° 3600seconds
21:00
- 95% 13% - - 0% 100% 28% 23% - -12° 3600seconds
22:00
- 94% 14% - - 0% 22% 8% 19% - -21° 0seconds
23:00
- 94% 14% - - 0% 5% 0% 16% - -30° 0seconds
Thu, Apr 23 Sunrise 06:26 Sunset 20:00
24:00
- 95% 14% - - 1% 5% 0% 14% - -35° 0seconds
01:00
- 96% 15% - - 5% 4% 0% 11% - -38° 0seconds
02:00
- 97% 15% - - 5% 0% 0% 8.5% - -37° 0seconds
03:00
- 95% 14% - - 5% 0% 0% 9.3% - -32° 0seconds
04:00
- 94% 14% - - 5% 0% 0% 10% - -25° 0seconds
05:00
- 92% 13% - - 62% 0% 0% 11% - -16° 0seconds
06:00
- 84% 21% - - 82% 0% 0% 14% - -5.6° 0seconds
07:00
- 75% 29% - - 94% 0% 0% 17% - 5.6° 0seconds
08:00
- 67% 37% - - 48% 0% 0% 21% - 17° 0seconds
09:00
- 64% 37% - - 28% 0% 0% 16% - 29° 0seconds
10:00
- 61% 38% - - 36% 0% 0% 12% - 40° 3600seconds
11:00
- 58% 38% - - 5% 0% 0% 8% - 50° 3600seconds
12:00
- 56% 39% - - 23% 0% 0% 8% - 59° 3600seconds
13:00
- 54% 39% - - 33% 0% 0% 7.9% - 63° 3600seconds
14:00
- 52% 40% - - 35% 0% 0% 7.9% - 62° 3600seconds
15:00
- 53% 39% - - 32% 0% 2% 7.6% - 55° 3600seconds
16:00
- 53% 38% - - 46% 0% 4% 7.4% - 45° 3600seconds
17:00
- 54% 37% - - 61% 7% 14% 7.1% - 34° 3600seconds
18:00
- 56% 39% - - 74% 5% 10% 7.1% - 22° 2400seconds
19:00
- 58% 41% - - 87% 2% 6% 7.1% - 11° 1200seconds
20:00
- 60% 43% - - 100% 0% 2% 7.1% - -0.16° 0seconds
21:00
- 60% 41% - - 100% 0% 2% 7.1% - -11° 0seconds
22:00
- 61% 39% - - 100% 0% 3% 7.2% - -21° 0seconds
23:00
- 61% 37% - - 100% 0% 3% 7.2% - -29° 0seconds
Fri, Apr 24 Sunrise 06:25 Sunset 20:01
24:00
- 65% 37% - - 100% 0% 4% 8.4% - -35° 0seconds
01:00
- 70% 38% - - 100% 0% 4% 9.7% - -38° 0seconds
02:00
- 74% 38% - - 100% 0% 5% 11% - -37° 0seconds
03:00
- 71% 38% - - 93% 0% 3% 11% - -32° 1200seconds
04:00
- 67% 37% - - 86% 0% 2% 11% - -25° 2400seconds
05:00
- 64% 37% - - 80% 0% 0% 11% - -16° 3600seconds
06:00
- 62% 41% - - 84% 0% 0% 11% - -5.4° 3600seconds
07:00
- 59% 44% - - 88% 0% 0% 12% - 5.8° 3600seconds
08:00
- 57% 48% - - 92% 0% 0% 12% - 17° 3600seconds
09:00
- 55% 47% - - 89% 2% 1% 12% - 29° 3600seconds
10:00
- 54% 47% - - 87% 3% 1% 13% - 40° 3600seconds
11:00
- 52% 46% - - 85% 4% 2% 14% - 51° 3600seconds
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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