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Rule Fire Sky

Yakushima - Fire Sky - Kyushu

Koseda, Kagoshima, Japan

Those rare, intensely red and orange sunset skies

Currently

Real-time conditions
Low Cloud Cover1%
Mid Cloud Cover0%
High Cloud Cover0%
Aerosol Optical Depth0.2
Sun Elevation-36.9° (Astronomical night)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
fire-sky weather icon
Next opportunity
Spectacular Fiery Red Sky at Sunrise
Yakushima
Mon, May 25 · 05:01–05:52 · 1h window
Medium confidence
45%
🔥Fiery Red Sky Potential92.7%
Low Cloud Cover: 10%
Mid Cloud Cover: 0%
High Cloud Cover: 68%
Sun Elevation: -4.3° (Civil twilight)

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks dramatic sunset and twilight conditions across Kyushu's volcanic landscapes and subtropical coasts. We analyze cloud formations, volcanic haze, atmospheric instability, and weather systems to predict when active volcanoes and ocean horizons create spectacular fire-sky photography.

Kyushu's active volcanism, subtropical weather, and coastal exposure create exceptional fire-sky conditions. Volcanic ash from Sakurajima and Mount Aso adds atmospheric particles enhancing sunset colors. Weather systems from the East China Sea and Pacific interact with volcanic peaks creating dynamic cloud formations. Coastal locations provide unobstructed ocean horizons for dramatic twilight.

What makes Kyushu fire-sky photography special:

  • Active volcano twilight - Sakurajima erupting against sunset creates silhouettes with ash plumes illuminated by fading light
  • Volcanic atmospheric enhancement - Fine volcanic ash particles scatter light creating intensified orange and red sunset conditions
  • Subtropical cloud drama - Warm humid air masses create towering cumulus formations at sunset over volcanic peaks
  • Ocean horizon fire - Unobstructed Pacific and East China Sea horizons provide dramatic sunset compositions

Sakurajima from Kagoshima waterfront provides Kyushu's most dramatic fire-sky photography—the volcano erupts multiple times daily, and evening eruptions with ash plumes backlit against sunset create extraordinary conditions. Mount Aso's caldera rim at sunset offers westward views over volcanic bowl with setting sun illuminating crater walls. Nagasaki harbor at twilight combines hillside city lights with dramatic western skies. Aoshima shrine island provides Pacific sunset with distinctive washboard rock formations. Autumn after typhoon season and winter provide reliable fire-sky conditions. Volcanic haze generally enhances rather than obscures sunset colors.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 81 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Golden Hour
Any
Fiery Red Sky Potential
≥ 65.0%
Precipitation Chance
≤ 15.0%
Visibility
≥ 8000.0m
Mon, May 18
13:007.8%0%24135m
14:004.8%0%24134m
15:004.7%0%24135m
16:004.7%0%24135m
17:004.7%0%24135m
18:004.8%0%24135m
19:0041%0%24134m
20:009.6%0%24135m
21:008%0%24134m
22:006.3%8.3%24134m
23:006.4%17%24134m
Tue, May 19
24:006.4%25%24134m
01:005.3%29%24134m
02:005.3%33%24134m
03:006.6%38%23650m
04:0010%45%18470m
05:0029%53%18474m
06:0011%60%18225m
07:006.1%68%18263m
08:000.1%76%18086m
09:000.1%84%18006m
10:000.3%80%18040m
11:000%76%5431m
12:000.9%72%5066m
13:000.6%78%3921m
14:000.8%84%2525m
15:001%90%6532m
16:001.6%81%2152m
17:000.3%73%2168m
18:000.1%64%3211m
19:0016%70%3115m
20:0012%75%17943m
21:0015%81%18004m
22:0017%75%15956m
23:0027%68%17911m
Wed, May 20
24:0028%62%16653m
01:0015%66%17946m
02:0015%71%4972m
03:0029%76%18003m
04:0020%64%21330m
05:0043%51%20163m
06:0034%39%23197m
07:0019%49%24135m
08:0031%59%24134m
09:0020%69%24134m
10:0034%62%24135m
11:0034%56%24135m
12:0013%49%24135m
13:0017%57%24135m
14:0025%64%24135m
15:0016%72%24134m
16:0029%61%24134m
17:006.1%50%18402m
18:0038%39%18018m
19:0054%38%18113m
20:0029%38%24135m
21:0014%38%24134m
22:0013%29%24135m
23:0015%20%20175m
Thu, May 21
24:0014%12%18162m
01:006.8%15%23980m
02:007%19%24036m
03:007.4%22%24134m
04:006.3%30%23842m
05:0018%38%23549m
06:007%45%23257m
07:006.9%57%23343m
08:006.3%69%23430m
09:006.7%81%23516m
10:000%81%22532m
11:000%81%21548m
12:000%81%20564m
13:000%84%20582m
14:000%87%20600m
15:000%90%20617m
16:000%78%20643m
17:000%67%20669m
18:000%56%20695m
19:002.7%61%21842m
20:000%65%22988m
21:000%70%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
Asia/Tokyo
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
Mon, May 18 Sunrise 05:21 Sunset 19:06
23:00
0.2 92% 16% 0.03 - 0% 1% 0% 7.7% 0.01 -37° 0seconds
Tue, May 19 Sunrise 05:21 Sunset 19:06
24:00
0.2 89% 21% 0.03 - 0% 1% 0% 9.6% 0.01 -40° 0seconds
01:00
0.19 89% 20% 0.03 - 0% 1% 0% 11% 0.01 -39° 0seconds
02:00
0.2 88% 20% 0.02 - 0% 3% 0% 13% 0.01 -34° 0seconds
03:00
0.2 88% 19% 0.02 - 0% 14% 0% 15% 0.01 -26° 0seconds
04:00
0.21 79% 21% 0.02 - 0% 96% 0% 36% 0.01 -16° 0seconds
05:00
0.22 69% 24% 0.02 - 0% 62% 0% 56% 0.01 -4.9° 0seconds
06:00
0.23 60% 26% 0.02 - 0% 13% 0% 76% 0.01 7.1° 0seconds
07:00
0.22 48% 25% 0.02 - 0% 58% 0% 83% 0.01 19° 0seconds
08:00
0.2 35% 24% 0.01 - 0% 99% 0% 90% 0.01 32° 0seconds
09:00
0.18 23% 23% 0.01 - 0% 100% 0% 96% 0.01 45° 0seconds
10:00
0.15 16% 20% 0.01 - 0% 100% 2% 92% 0.009 58° 0seconds
11:00
0.12 8% 18% 0.008 - 0% 100% 0% 88% 0.008 70° 0seconds
12:00
0.09 1% 15% 0.006 - 0% 100% 72% 84% 0.007 79° 0seconds
13:00
0.09 1% 16% 0.005 - 45% 96% 12% 82% 0.007 75° 0seconds
14:00
0.09 2% 17% 0.005 - 81% 98% 2% 80% 0.008 64° 0seconds
15:00
0.1 2% 18% 0.006 - 76% 54% 0% 79% 0.008 51° 0seconds
16:00
0.1 3% 20% 0.008 - 50% 98% 0% 78% 0.009 38° 3600seconds
17:00
0.1 5% 21% 0.01 - 3% 100% 0% 76% 0.009 25° 3600seconds
18:00
0.1 6% 23% 0.01 - 0% 100% 5% 75% 0.009 13° 3600seconds
19:00
0.1 6% 22% 0.01 - 0% 96% 0% 72% 0.009 0.95° 0seconds
20:00
0.09 5% 22% 0.01 - 0% 29% 0% 68% 0.009 -11° 0seconds
21:00
0.09 5% 21% 0.01 - 0% 77% 0% 64% 0.01 -21° 0seconds
22:00
- 7% 22% - - 4% 92% 0% 58% - -30° 0seconds
23:00
- 10% 24% - - 2% 42% 0% 52% - -37° 0seconds
Wed, May 20 Sunrise 05:21 Sunset 19:06
24:00
- 12% 25% - - 0% 56% 0% 46% - -40° 0seconds
01:00
- 11% 25% - - 8% 85% 0% 45% - -39° 0seconds
02:00
- 10% 24% - - 100% 88% 0% 44% - -34° 0seconds
03:00
- 9% 24% - - 5% 2% 0% 43% - -26° 0seconds
04:00
- 12% 27% - - 5% 12% 0% 46% - -16° 0seconds
05:00
- 14% 30% - - 96% 60% 0% 49% - -4.8° 0seconds
06:00
- 17% 33% - - 10% 78% 0% 52% - 7.2° 0seconds
07:00
- 15% 30% - - 0% 82% 0% 53% - 20° 0seconds
08:00
- 13% 27% - - 1% 65% 0% 53% - 32° 0seconds
09:00
- 11% 24% - - 1% 0% 0% 54% - 45° 0seconds
10:00
- 24% 25% - - 5% 0% 0% 52% - 58° 3600seconds
11:00
- 38% 25% - - 100% 0% 0% 51% - 70° 3600seconds
12:00
- 51% 26% - - 0% 0% 0% 49% - 79° 3600seconds
13:00
- 50% 23% - - 5% 4% 0% 52% - 75° 3600seconds
14:00
- 49% 21% - - 12% 5% 0% 55% - 64° 3600seconds
15:00
- 48% 18% - - 32% 5% 0% 58% - 51° 3600seconds
16:00
- 49% 22% - - 5% 20% 0% 65% - 38° 3600seconds
17:00
- 51% 26% - - 6% 1% 0% 71% - 26° 3600seconds
18:00
- 52% 30% - - 52% 1% 0% 78% - 13° 3600seconds
19:00
- 44% 29% - - 100% 1% 0% 58% - 1.1° 3600seconds
20:00
- 37% 27% - - 94% 1% 2% 39% - -11° 3600seconds
21:00
- 29% 26% - - 100% 0% 4% 20% - -21° 3600seconds
22:00
- 22% 26% - - 99% 0% 5% 25% - -30° 0seconds
23:00
- 14% 25% - - 100% 1% 5% 31% - -37° 0seconds
Thu, May 21 Sunrise 05:20 Sunset 19:07
24:00
- 7% 25% - - 24% 1% 6% 37% - -39° 0seconds
01:00
- 5% 23% - - 100% 3% 17% 57% - -38° 0seconds
02:00
- 4% 20% - - 79% 2% 85% 77% - -33° 0seconds
03:00
- 2% 18% - - 93% 2% 49% 97% - -26° 0seconds
04:00
- 2% 18% - - 62% 34% 66% 97% - -16° 0seconds
05:00
- 2% 17% - - 32% 67% 83% 98% - -4.7° 0seconds
06:00
- 2% 17% - - 2% 99% 100% 99% - 7.3° 0seconds
07:00
- 1% 15% - - 35% 85% 68% 96% - 20° 0seconds
08:00
- 1% 12% - - 67% 72% 37% 93% - 32° 0seconds
09:00
- 0% 10% - - 100% 59% 5% 90% - 45° 0seconds
10:00
- 0% 10% - - 98% 53% 34% 91% - 58° 1200seconds
11:00
- 0% 9% - - 96% 47% 63% 92% - 70° 2400seconds
12:00
- 0% 9% - - 94% 40% 91% 92% - 79° 3600seconds
13:00
- 0% 7% - - 96% 52% 72% 91% - 75° 2400seconds
14:00
- 0% 6% - - 98% 63% 52% 90% - 64° 1200seconds
15:00
- 0% 4% - - 100% 74% 32% 88% - 51° 0seconds
16:00
- 0% 4% - - 100% 68% 23% 63% - 38° 0seconds
17:00
- 0% 5% - - 100% 62% 13% 38% - 26° 0seconds
18:00
- 0% 5% - - 100% 56% 4% 13% - 13° 0seconds
19:00
- 0% 5% - - 100% 54% 2% 12% - 1.2° 0seconds
20:00
- 0% 4% - - 100% 52% 1% 12% - -11° 0seconds
21:00
- 0% 4% - - 100% 51% 0% 12% - -21° 0seconds
22:00
- 0% 6% - - 100% 50% 0% 13% - -30° 0seconds
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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