Skip to content
Rule Fire Sky

Mount Aso - Fire Sky - Kyushu

Aso, Kumamoto, Japan

Those rare, intensely red and orange sunset skies

Currently

Real-time conditions
Low Cloud Cover0%
Mid Cloud Cover0%
High Cloud Cover0%
Aerosol Optical Depth0.1
Sun Elevation-34.7° (Astronomical night)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
fire-sky weather icon
Next opportunity
Excellent Fiery Red Sky at Sunset
Mount Aso
Mon, May 25 · 19:00–19:32 · 1h window
Low confidence
39%
🔥Fiery Red Sky Potential77%
Low Cloud Cover: 0%
Mid Cloud Cover: 0%
High Cloud Cover: 55%
Sun Elevation: 2.2° (Golden hour)

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.

Create your own Fire Sky 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 80 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
13:004.7%0%24135m
14:004.7%0%24134m
15:004.7%0%24135m
16:004.7%0%24135m
17:004.7%0%24135m
18:004.7%0%24135m
19:0039%0%24134m
20:004.7%0%24135m
21:004.7%0%24134m
22:004.7%0%24134m
23:004.7%0%24134m
Tue, May 19
24:005.1%0%24134m
01:005.9%0%24134m
02:004.7%0%24134m
03:004.7%0%24135m
04:004.7%0%24135m
05:0033%0%24135m
06:004.7%0%24135m
07:004.8%0%24134m
08:004.7%0%24134m
09:004.7%0%24134m
10:009.4%4.9%24134m
11:009.3%9.8%24134m
12:009.3%15%24134m
13:0022%17%24134m
14:0014%20%24134m
15:0021%22%24134m
16:0023%19%24134m
17:0021%16%24135m
18:0021%13%24135m
19:0024%17%24135m
20:0015%22%24134m
21:0015%26%21653m
22:0020%17%24134m
23:0018%8.7%17811m
Wed, May 20
24:0014%0%24134m
01:0018%13%8889m
02:0021%26%24134m
03:0016%39%24135m
04:006.2%58%6714m
05:0014%78%3672m
06:0017%97%3964m
07:0011%98%3790m
08:0010%99%3899m
09:0014%100%24134m
10:0017%99%21813m
11:0013%98%11275m
12:0012%97%19149m
13:0019%97%18953m
14:0023%98%5509m
15:0025%98%4917m
16:0022%93%4789m
17:0027%87%7710m
18:0024%82%9731m
19:0022%78%21951m
20:0014%73%10666m
21:0013%69%5507m
22:0013%66%8465m
23:0022%63%7887m
Thu, May 21
24:0022%61%4909m
01:0017%72%3997m
02:0014%84%6239m
03:0011%96%24134m
04:000%96%16114m
05:000.2%97%8094m
06:000%97%73m
07:000%98%72m
08:000%98%70m
09:000%99%68m
10:000%95%157m
11:000%90%247m
12:000%85%337m
13:000%87%261m
14:000%88%184m
15:000%90%107m
16:000%88%120m
17:000%86%133m
18:000%84%146m
19:000.9%84%334m
20:000%85%521m
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 05:15 Sunset 19:09
23:00
0.14 100% 0% 0.05 - 0% 0% 0% 8.6% 0.02 -35° 0seconds
Tue, May 19 Sunrise 05:15 Sunset 19:09
24:00
0.14 100% 0% 0.04 - 0% 0% 0% 8% 0.02 -37° 0seconds
01:00
0.14 100% 0% 0.04 - 1% 0% 0% 6.6% 0.02 -36° 0seconds
02:00
0.13 100% 0% 0.03 - 0% 0% 0% 5.1% 0.02 -31° 0seconds
03:00
0.13 100% 0% 0.03 - 0% 0% 0% 3.7% 0.02 -24° 0seconds
04:00
0.13 100% 1% 0.03 - 0% 0% 0% 3.4% 0.02 -14° 0seconds
05:00
0.13 100% 3% 0.03 - 0% 0% 0% 3.1% 0.02 -3.4° 0seconds
06:00
0.13 100% 4% 0.03 - 0% 0% 0% 2.8% 0.01 8.2° 0seconds
07:00
0.13 100% 4% 0.03 - 0% 0% 0% 3.5% 0.01 20° 0seconds
08:00
0.12 100% 3% 0.03 - 0% 0% 0% 4.1% 0.01 33° 0seconds
09:00
0.13 100% 3% 0.03 - 0% 0% 0% 4.8% 0.01 45° 3600seconds
10:00
0.14 96% 9% 0.02 - 0% 0% 0% 6.8% 0.01 58° 3600seconds
11:00
0.15 93% 15% 0.02 - 0% 0% 0% 8.7% 0.01 69° 3600seconds
12:00
0.16 89% 21% 0.02 - 0% 0% 0% 11% 0.01 77° 3600seconds
13:00
0.19 86% 22% 0.02 - 4% 2% 0% 23% 0.01 73° 3600seconds
14:00
0.19 82% 22% 0.02 - 100% 67% 0% 36% 0.01 63° 3600seconds
15:00
0.17 79% 23% 0.01 - 50% 92% 6% 49% 0.01 50° 3600seconds
16:00
0.13 64% 28% 0.01 - 46% 36% 0% 64% 0.01 38° 3600seconds
17:00
0.1 50% 33% 0.01 - 25% 99% 2% 79% 0.01 25° 3600seconds
18:00
0.09 35% 38% 0.009 - 23% 95% 82% 94% 0.01 13° 3600seconds
19:00
0.08 28% 35% 0.009 - 84% 100% 30% 95% 0.009 1.5° 3600seconds
20:00
0.08 22% 32% 0.008 - 100% 97% 64% 97% 0.009 -10° 0seconds
21:00
0.07 15% 29% 0.008 - 100% 100% 98% 98% 0.009 -20° 0seconds
22:00
- 11% 26% - - 100% 72% 13% 98% - -28° 0seconds
23:00
- 7% 22% - - 100% 94% 5% 97% - -34° 0seconds
Wed, May 20 Sunrise 05:14 Sunset 19:10
24:00
- 3% 19% - - 97% 83% 4% 97% - -37° 0seconds
01:00
- 3% 18% - - 100% 71% 7% 90% - -36° 0seconds
02:00
- 2% 17% - - 91% 98% 5% 83% - -31° 0seconds
03:00
- 2% 16% - - 86% 36% 3% 76% - -24° 0seconds
04:00
- 1% 14% - - 43% 20% 0% 71% - -14° 0seconds
05:00
- 1% 11% - - 100% 33% 89% 66% - -3.3° 0seconds
06:00
- 0% 9% - - 71% 41% 44% 62% - 8.3° 0seconds
07:00
- 0% 8% - - 82% 36% 100% 65% - 20° 0seconds
08:00
- 0% 6% - - 22% 18% 89% 68% - 33° 0seconds
09:00
- 0% 5% - - 5% 16% 84% 71% - 45° 3600seconds
10:00
- 0% 8% - - 92% 28% 10% 68% - 58° 3600seconds
11:00
- 0% 10% - - 96% 61% 57% 64% - 69° 3600seconds
12:00
- 0% 13% - - 17% 35% 5% 61% - 77° 3600seconds
13:00
- 0% 13% - - 15% 23% 8% 66% - 73° 3600seconds
14:00
- 0% 12% - - 12% 10% 7% 70% - 63° 3600seconds
15:00
- 0% 12% - - 100% 6% 6% 74% - 51° 3600seconds
16:00
- 0% 12% - - 100% 6% 5% 74% - 38° 3600seconds
17:00
- 1% 13% - - 100% 2% 9% 74% - 26° 3600seconds
18:00
- 1% 13% - - 87% 36% 23% 74% - 13° 3600seconds
19:00
- 1% 11% - - 100% 72% 71% 72% - 1.7° 3600seconds
20:00
- 0% 9% - - 100% 100% 76% 70% - -9.8° 3600seconds
21:00
- 0% 7% - - 100% 100% 99% 68% - -20° 3600seconds
22:00
- 0% 6% - - 100% 52% 100% 64% - -28° 0seconds
23:00
- 0% 4% - - 100% 28% 94% 59% - -34° 0seconds
Thu, May 21 Sunrise 05:13 Sunset 19:10
24:00
- 0% 3% - - 100% 21% 97% 55% - -37° 0seconds
01:00
- 0% 2% - - 100% 21% 100% 69% - -36° 0seconds
02:00
- 0% 2% - - 100% 44% 100% 83% - -31° 0seconds
03:00
- 0% 1% - - 100% 57% 100% 97% - -24° 0seconds
04:00
- 0% 1% - - 100% 72% 69% 98% - -14° 0seconds
05:00
- 0% 0% - - 100% 86% 37% 99% - -3.2° 0seconds
06:00
- 0% 0% - - 100% 100% 6% 99% - 8.4° 0seconds
07:00
- 0% 0% - - 100% 100% 4% 99% - 21° 0seconds
08:00
- 0% 0% - - 100% 100% 2% 99% - 33° 0seconds
09:00
- 0% 0% - - 100% 100% 0% 99% - 46° 0seconds
10:00
- 0% 2% - - 100% 100% 0% 71% - 58° 0seconds
11:00
- 0% 4% - - 100% 99% 0% 43% - 69° 0seconds
12:00
- 0% 6% - - 100% 98% 0% 15% - 77° 0seconds
13:00
- 0% 7% - - 81% 99% 0% 15% - 73° 0seconds
14:00
- 0% 8% - - 62% 100% 0% 15% - 63° 0seconds
15:00
- 0% 9% - - 43% 100% 0% 15% - 51° 0seconds
16:00
- 1% 12% - - 29% 100% 0% 18% - 38° 0seconds
17:00
- 2% 16% - - 14% 100% 0% 21% - 26° 0seconds
18:00
- 3% 19% - - 0% 100% 0% 24% - 13° 0seconds
19:00
- 3% 19% - - 0% 95% 0% 30% - 1.8° 0seconds
20:00
- 4% 20% - - 0% 91% 0% 36% - -9.7° 0seconds
21:00
- 4% 20% - - 0% 87% 0% 42% - -20° 0seconds
22:00
- 5% 22% - - 0% 91% 0% 47% - -28° 0seconds
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