Mingus Mountain Summit
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Mingus Mountain Summit clear sky chart from 2005-11-06 to 2024-01-13.

This page is a summary of past forecasts. Even though it's based only on forecasts, some people use these pages as clue to a site's climate. But climate data based on actual observation should be preferred (if you can find it!).

Cloud, Transparency and Seeing forecasts are summarized individually. But because good observing conditions require a combination of minimum cloud cover, transparency and seeing, the individual forecast summaries can be difficult to interpret. The observing conditions section counts the combinations of conditions needed for common types of astronomical observation.

Observing Conditions

The following tables count the occurrence of the combinations of forecast and darkness conditions needed for different observations. Conditions are rated by by what percentage of the hours the observation would likely be attempted are usable.
Observation TypeMinimum conditions for hour to be usableOut of hours
Clear of CloudsTransparencySeeingSky Brightness
Planetary:50%(no limit)Average(no limit)Nighttime Hours
Deep Sky:70%Average(no limit)5.9Nighttime Hours
CCD Imaging:70%Below AveragePoor(no limit)Nighttime Hours

Percentages are of nighttime hours per month, or per year, when a particular observing conditions was met. Deep Sky percentages never exceed 50% because the moon is up half the time. Deep sky percentages are much lower for charts at high latitudes because of fewer dark hours in the summer.

Overall

PlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
Night
72%
24069
35%
74326
30%
24020
78%
24020
53%
35090

By Month

MonthDays of MonthPlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
January1st to 10thNight
66%
760
35%
2457
31%
756
76%
756
48%
1186
January11th to 20thNight
65%
732
36%
2378
33%
732
73%
732
45%
1164
January21st to endNight
62%
792
36%
2574
34%
792
71%
792
41%
1347
February1st to 10thNight
64%
720
36%
2277
30%
720
76%
720
53%
1037
February11th to 20thNight
61%
700
33%
2099
27%
700
72%
700
47%
1062
February21st to endNight
60%
592
36%
1776
33%
592
68%
592
47%
900
March1st to 10thNight
60%
720
35%
1994
27%
720
69%
720
52%
1018
March11th to 20thNight
64%
720
35%
1980
27%
720
71%
720
51%
1021
March21st to endNight
64%
792
35%
2178
23%
792
73%
792
55%
1092
April1st to 10thNight
64%
720
33%
1980
20%
720
74%
720
60%
948
April11th to 20thNight
58%
609
38%
1819
25%
609
70%
609
58%
814
April21st to endNight
63%
540
45%
1620
31%
540
75%
540
67%
677
May1st to 10thNight
71%
540
38%
1620
30%
540
78%
540
62%
698
May11th to 20thNight
72%
531
40%
1594
32%
531
76%
531
65%
679
May21st to endNight
72%
582
38%
1746
29%
582
78%
582
71%
710
June1st to 10thNight
82%
540
36%
1620
32%
540
83%
540
73%
648
June11th to 20thNight
80%
540
37%
1620
32%
540
82%
540
76%
630
June21st to endNight
85%
540
34%
1620
31%
540
86%
540
66%
696
July1st to 10thNight
88%
525
28%
1575
25%
525
88%
525
52%
772
July11th to 20thNight
87%
522
25%
1566
21%
522
87%
522
47%
800
July21st to endNight
78%
591
21%
1674
18%
558
78%
558
35%
965
August1st to 10thNight
86%
537
28%
1602
23%
534
87%
534
50%
782
August11th to 20thNight
85%
534
31%
1602
27%
534
85%
534
47%
819
August21st to endNight
86%
694
33%
1964
30%
694
87%
694
50%
1027
September1st to 10thNight
84%
720
31%
1980
28%
720
85%
720
50%
1041
September11th to 20thNight
86%
720
41%
1980
35%
720
89%
720
66%
915
September21st to endNight
80%
720
41%
1980
30%
720
86%
720
68%
903
October1st to 10thNight
77%
720
37%
2006
28%
720
82%
720
57%
985
October11th to 20thNight
82%
720
42%
2160
38%
720
86%
720
68%
916
October21st to endNight
77%
792
45%
2376
38%
792
84%
792
69%
994
November1st to 10thNight
78%
740
42%
2243
37%
740
83%
740
63%
975
November11th to 20thNight
76%
760
41%
2470
39%
760
84%
760
62%
1026
November21st to endNight
68%
760
38%
2470
35%
760
76%
760
51%
1137
December1st to 10thNight
70%
760
36%
2470
36%
760
75%
760
49%
1176
December11th to 20thNight
66%
758
33%
2930
33%
758
72%
758
35%
1507
December21st to endNight
61%
826
22%
4326
30%
817
69%
817
27%
2023

Individual Forecasts

The length of each colored bar in the "occurrence of each Forecast" column is proportional to the number of times the chart forecast that color. The percentages are of the total number of hours per month, or per year, with a particular forecast. The colors as the same as those used in clear sky charts.

Note: Transparency probabilities are only counted for those hours that have 30% or less cloud cover. Seeing probabilities are only counted for those hours that have 80% or less cloud cover. If that's too tricky, try Observing Conditions instead.

Overall

Occurrence of each ForecastData
Points
Cloud CoverDay
331342445%7%63%
74939
Night
331332345%6%67%
74838
TransparencyDay
20%46%15%28%27%
74666
Night
18%36%16%28%28%
74633
SeeingDay
6%10%23%31%22%8%
13842
Night
4315%40%33%4
24087

By Month

Percentage Cloud Cover SW (2006-)
Color Meanings:
Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
5%5%24433346%63%
1708
11th to 20thDay
5%423332345%66%
1638
21st to endDay
6%6%2343435%7%58%
1782
February1st to 10thDay
342432335%6%65%
1678
11th to 20thDay
6%5%246%34446%57%
1750
21st to endDay
5%6%145%34346%59%
1480
March1st to 10thDay
45%134245%5%8%58%
1965
11th to 20thDay
45%24433345%62%
1980
21st to endDay
442443435%6%63%
2178
April1st to 10thDay
222342335%7%67%
1980
11th to 20thDay
2314223336%72%
2083
21st to endDay
2212323446%70%
2340
May1st to 10thDay
221332345%6%69%
2340
11th to 20thDay
221232435%6%70%
2301
21st to endDay
2213312335%75%
2530
June1st to 10thDay
1112223336%77%
2340
11th to 20thDay
11111122484%
2340
21st to endDay
1212324345%74%
2340
July1st to 10thDay
11135%37%6%7%7%58%
2340
11th to 20thDay
4325%6%48%8%9%10%42%
2340
21st to endDay
5%437%6%5%9%9%10%11%32%
2545
August1st to 10thDay
3325%5%46%7%7%8%49%
2328
11th to 20thDay
2325%5%47%7%8%8%48%
2299
21st to endDay
44245%35%6%8%9%51%
2385
September1st to 10thDay
43245%35%5%7%8%54%
1980
11th to 20thDay
211222345%7%71%
1980
21st to endDay
3213323346%71%
1980
October1st to 10thDay
32133235%45%69%
1953
11th to 20thDay
212212235%80%
1800
21st to endDay
2111213335%77%
1980
November1st to 10thDay
1211323347%73%
1831
11th to 20thDay
2213222435%74%
1710
21st to endDay
6%323323335%67%
1710
December1st to 10thDay
5%5%1332445%6%61%
1710
11th to 20thDay
5%5%35%5%35%46%8%51%
2169
21st to endDay
8%6%35%5%33346%54%
3146
January1st to 10thNight
441432445%7%62%
2457
11th to 20thNight
5%324423445%64%
2378
21st to endNight
6%6%24423345%59%
2574
February1st to 10thNight
3413323345%70%
2277
11th to 20thNight
4423425%45%5%61%
2098
21st to endNight
5%5%1242335%6%62%
1776
March1st to 10thNight
331342346%8%62%
1994
11th to 20thNight
5%5%23423345%65%
1980
21st to endNight
231332345%7%66%
2178
April1st to 10thNight
221332335%6%68%
1980
11th to 20thNight
2313323345%71%
1819
21st to endNight
1212213336%76%
1620
May1st to 10thNight
2212322445%74%
1620
11th to 20thNight
1212313225%77%
1594
21st to endNight
22121123481%
1746
June1st to 10thNight
112112335%80%
1620
11th to 20thNight
1121122385%
1620
21st to endNight
121222233478%
1620
July1st to 10thNight
1213325%47%8%63%
1620
11th to 20thNight
1213435%6%8%10%58%
1620
21st to endNight
3435%5%46%7%10%11%42%
1773
August1st to 10thNight
221343447%10%61%
1611
11th to 20thNight
22143346%8%11%57%
1602
21st to endNight
23143346%8%9%58%
1964
September1st to 10thNight
2213436%47%9%57%
1980
11th to 20thNight
3212222336%75%
1980
21st to endNight
2112323335%76%
1980
October1st to 10thNight
321232345%5%70%
2006
11th to 20thNight
211221233480%
2160
21st to endNight
1112212335%79%
2376
November1st to 10thNight
2212323345%73%
2243
11th to 20thNight
2112323345%74%
2470
21st to endNight
5%413323335%68%
2470
December1st to 10thNight
6%413324447%63%
2470
11th to 20thNight
6%5%25%435%448%54%
3041
21st to endNight
7%5%245%35%445%56%
4521

Transparency (when cloud cover <= 30%)
Color Meanings:
Too cloudy to forecast Poor Below Average Average Above average Transparent
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
24%36%20%31%16%
1709
11th to 20thDay
22%26%21%33%16%
1638
21st to endDay
27%37%17%32%14%
1782
February1st to 10thDay
21%37%17%28%23%
1678
11th to 20thDay
28%36%16%26%21%
1760
21st to endDay
26%36%16%29%20%
1480
March1st to 10thDay
23%35%18%30%20%
1965
11th to 20thDay
23%35%17%32%19%
1980
21st to endDay
22%35%18%36%16%
2178
April1st to 10thDay
18%2418%34%24%
1980
11th to 20thDay
16%2314%33%32%
2086
21st to endDay
15%2414%35%30%
2340
May1st to 10thDay
17%2415%32%30%
2340
11th to 20thDay
15%25%14%32%31%
2304
21st to endDay
13%2411%30%40%
2530
June1st to 10thDay
11%129%32%46%
2340
11th to 20thDay
7%11421%65%
2340
21st to endDay
13%238%22%52%
2340
July1st to 10thDay
20%6%7%13%18%36%
2276
11th to 20thDay
29%10%15%17%17%12%
2271
21st to endDay
36%10%18%16%12%7%
2404
August1st to 10thDay
27%7%10%16%17%22%
2313
11th to 20thDay
27%8%11%19%19%17%
2299
21st to endDay
26%6%10%17%25%15%
2385
September1st to 10thDay
26%6%8%13%21%25%
1980
11th to 20thDay
12%46%13%32%33%
1980
21st to endDay
16%3312%31%35%
1980
October1st to 10thDay
18%45%17%24%33%
1953
11th to 20thDay
10%1410%32%43%
1800
21st to endDay
12%25%14%34%34%
1980
November1st to 10thDay
12%25%21%36%24%
1831
11th to 20thDay
13%2418%31%32%
1710
21st to endDay
21%2416%33%24%
1710
December1st to 10thDay
24%47%20%24%21%
1710
11th to 20thDay
30%5%9%22%21%14%
2168
21st to endDay
31%5%5%21%30%8%
3146
January1st to 10thNight
22%36%24%33%13%
2457
11th to 20thNight
23%4322%31%18%
2378
21st to endNight
28%35%16%33%16%
2574
February1st to 10thNight
18%27%18%30%25%
2277
11th to 20thNight
23%37%18%27%22%
2099
21st to endNight
23%35%16%31%22%
1776
March1st to 10thNight
20%35%18%32%22%
1994
11th to 20thNight
21%3416%33%22%
1980
21st to endNight
18%47%18%34%18%
2178
April1st to 10thNight
16%26%15%36%25%
1980
11th to 20thNight
15%1411%34%35%
1819
21st to endNight
11%1412%37%34%
1620
May1st to 10thNight
13%26%13%29%36%
1620
11th to 20thNight
12%2412%33%37%
1595
21st to endNight
9%2312%32%43%
1746
June1st to 10thNight
9%128%25%54%
1620
11th to 20thNight
8%12419%66%
1620
21st to endNight
13%126%18%59%
1620
July1st to 10thNight
16%7%7%12%18%40%
1575
11th to 20thNight
18%8%15%19%24%15%
1566
21st to endNight
29%8%19%20%15%10%
1674
August1st to 10thNight
18%6%14%16%20%26%
1602
11th to 20thNight
19%8%13%23%17%21%
1602
21st to endNight
19%7%10%22%26%17%
1964
September1st to 10thNight
21%6%12%17%20%25%
1980
11th to 20thNight
12%45%14%29%37%
1980
21st to endNight
11%3311%31%40%
1980
October1st to 10thNight
16%46%16%22%36%
2006
11th to 20thNight
11%239%28%46%
2160
21st to endNight
10%25%12%30%41%
2376
November1st to 10thNight
13%2418%36%26%
2243
11th to 20thNight
13%2416%33%33%
2470
21st to endNight
20%2416%31%27%
2470
December1st to 10thNight
21%37%20%25%24%
2470
11th to 20thNight
28%47%19%28%14%
3041
21st to endNight
27%6%6%21%29%11%
4521

Seeing (when cloud cover <= 80%)
Color Meanings:
Too cloudy to forecast Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 10thDay
15%8%20%34%22%
270
11th to 20thDay
10%6%23%37%20%3
246
21st to endDay
5%11%22%34%23%5%
264
February1st to 10thDay
49%25%39%15%8%
298
11th to 20thDay
11%17%29%29%14%
415
21st to endDay
11%21%30%26%10%1
346
March1st to 10thDay
8%19%31%28%10%3
420
11th to 20thDay
10%17%25%25%17%5%
420
21st to endDay
8%23%32%24%11%2
462
April1st to 10thDay
5%17%35%22%14%7%
420
11th to 20thDay
8%21%34%21%13%3
412
21st to endDay
5%20%32%24%14%5%
420
May1st to 10thDay
6%16%32%28%15%3
423
11th to 20thDay
413%31%31%16%6%
448
21st to endDay
5%13%34%28%16%4
485
June1st to 10thDay
310%27%34%18%9%
450
11th to 20thDay
29%28%34%17%9%
450
21st to endDay
2425%38%24%8%
450
July1st to 10thDay
1119%37%31%10%
446
11th to 20thDay
5%110%34%30%20%
444
21st to endDay
6%16%30%36%22%
487
August1st to 10thDay
2210%38%32%16%
447
11th to 20thDay
3210%34%36%15%
437
21st to endDay
3111%33%32%21%
495
September1st to 10thDay
5%317%32%31%13%
450
11th to 20thDay
3321%35%28%10%
450
21st to endDay
5%7%20%32%26%10%
450
October1st to 10thDay
5%10%24%27%24%10%
423
11th to 20thDay
25%18%32%33%10%
270
21st to endDay
27%19%28%35%9%
297
November1st to 10thDay
47%18%36%27%8%
270
11th to 20thDay
46%16%36%25%12%
270
21st to endDay
7%9%20%32%24%7%
270
December1st to 10thDay
10%7%15%35%29%4
270
11th to 20thDay
17%26%39%22%5%
270
21st to endDay
15%11%18%36%17%3
297
January1st to 10thNight
6%418%45%22%6%
760
11th to 20thNight
8%417%44%24%4
732
21st to endNight
8%418%45%22%2
792
February1st to 10thNight
5%423%43%24%2
720
11th to 20thNight
6%5%23%46%20%1
704
21st to endNight
10%422%44%18%1
592
March1st to 10thNight
5%6%25%45%18%1
720
11th to 20thNight
7%5%19%38%27%3
720
21st to endNight
46%23%44%22%2
792
April1st to 10thNight
3423%48%20%2
720
11th to 20thNight
37%25%41%22%1
609
21st to endNight
2428%40%23%3
540
May1st to 10thNight
3418%48%26%1
540
11th to 20thNight
2217%42%34%3
531
21st to endNight
2319%48%25%3
584
June1st to 10thNight
1212%48%35%1
540
11th to 20thNight
1115%46%35%1
540
21st to endNight
219%38%47%3
540
July1st to 10thNight
2336%54%5%
525
11th to 20thNight
2122%61%13%
522
21st to endNight
42217%61%15%
591
August1st to 10thNight
2123%62%11%
537
11th to 20thNight
21222%64%10%
534
21st to endNight
21218%60%16%
694
September1st to 10thNight
31427%54%11%
720
11th to 20thNight
46%34%50%6%
720
21st to endNight
2112%37%43%5%
720
October1st to 10thNight
4213%43%34%3
720
11th to 20thNight
3211%47%34%4
720
21st to endNight
2414%38%34%8%
792
November1st to 10thNight
3312%47%32%4
740
11th to 20thNight
3215%46%29%5%
760
21st to endNight
6%319%42%27%3
760
December1st to 10thNight
8%316%43%29%1
760
11th to 20thNight
11%414%47%23%1
760
21st to endNight
9%321%46%18%3
836
Page generated at 2024-01-10 08:16:12. Version ac07

Copyright 2024 Attilla Danko


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