Comanche Springs
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Comanche Springs clear sky chart from 2005-11-06 to 2024-03-28.

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
49%
24385
31%
79799
19%
24292
61%
24292
41%
40273

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
43%
942
36%
3966
13%
926
58%
926
32%
1921
January11th to 20thNight
42%
945
35%
3932
15%
930
55%
930
38%
1637
January21st to endNight
42%
919
25%
4255
17%
910
58%
910
28%
2247
February1st to 10thNight
37%
760
33%
2280
14%
760
53%
760
39%
1229
February11th to 20thNight
34%
744
29%
2218
12%
740
48%
740
39%
1175
February21st to endNight
28%
628
33%
1884
10%
628
47%
628
36%
1007
March1st to 10thNight
30%
743
29%
2263
11%
743
45%
743
34%
1258
March11th to 20thNight
31%
570
29%
2090
15%
570
49%
570
32%
1058
March21st to endNight
32%
615
29%
2255
14%
615
53%
615
35%
1083
April1st to 10thNight
28%
540
32%
1877
15%
540
51%
540
38%
913
April11th to 20thNight
25%
533
30%
1777
11%
533
51%
533
36%
929
April21st to endNight
34%
540
33%
1697
16%
540
58%
540
42%
848
May1st to 10thNight
32%
540
30%
1620
14%
540
53%
540
40%
864
May11th to 20thNight
42%
531
23%
1594
16%
531
55%
531
39%
881
May21st to endNight
47%
583
27%
1745
18%
582
62%
582
40%
958
June1st to 10thNight
57%
540
24%
1620
18%
540
67%
540
46%
829
June11th to 20thNight
50%
540
26%
1620
20%
540
60%
540
49%
799
June21st to endNight
64%
540
29%
1620
28%
540
70%
540
52%
790
July1st to 10thNight
75%
525
21%
1575
22%
525
77%
525
42%
860
July11th to 20thNight
83%
522
32%
1566
34%
522
87%
522
57%
735
July21st to endNight
86%
591
35%
1673
39%
558
87%
558
55%
791
August1st to 10thNight
84%
537
36%
1626
40%
534
89%
534
61%
730
August11th to 20thNight
75%
534
28%
1778
34%
534
77%
534
39%
928
August21st to endNight
83%
594
32%
1980
36%
594
86%
594
52%
902
September1st to 10thNight
72%
540
27%
1917
30%
540
76%
540
37%
988
September11th to 20thNight
63%
540
28%
1980
28%
540
68%
540
32%
1069
September21st to endNight
67%
540
35%
1980
34%
540
74%
540
42%
929
October1st to 10thNight
58%
540
36%
1980
31%
540
67%
540
42%
911
October11th to 20thNight
49%
580
40%
2020
23%
580
65%
580
45%
935
October21st to endNight
50%
828
39%
2412
19%
828
63%
828
50%
1202
November1st to 10thNight
52%
925
35%
2405
13%
925
64%
925
55%
1228
November11th to 20thNight
49%
950
36%
2470
16%
950
60%
950
55%
1260
November21st to endNight
44%
950
35%
2470
15%
950
56%
950
46%
1367
December1st to 10thNight
47%
950
38%
2470
18%
950
58%
950
47%
1348
December11th to 20thNight
38%
949
35%
2869
14%
948
52%
948
37%
1575
December21st to endNight
39%
1037
23%
4315
14%
1026
52%
1026
30%
2089

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
8%42442445%7%59%
79246
Night
7%42332345%7%60%
80806
TransparencyDay
26%48%23%27%11%
78971
Night
24%48%22%28%14%
80601
SeeingDay
9%5%24%33%23%7%
14300
Night
8%6%32%38%15%1
24421

By Month

Percentage Cloud Cover SE (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
6%6%24423346%60%
2847
11th to 20thDay
6%422223346%67%
2850
21st to endDay
12%8%24423345%53%
3341
February1st to 10thDay
9%5%25%422346%59%
1900
11th to 20thDay
9%434424346%58%
1849
21st to endDay
11%7%34323345%57%
1570
March1st to 10thDay
11%42442445%7%53%
1915
11th to 20thDay
11%5%24423345%59%
2090
21st to endDay
7%424435%445%58%
2255
April1st to 10thDay
7%323424336%63%
2078
11th to 20thDay
12%424423445%55%
2134
21st to endDay
8%42343445%6%58%
2260
May1st to 10thDay
10%3235%23447%57%
2340
11th to 20thDay
10%5%2332445%6%57%
2302
21st to endDay
7%5%24435%5%5%8%52%
2531
June1st to 10thDay
6%32342446%8%58%
2340
11th to 20thDay
5%3133245%6%8%60%
2340
21st to endDay
5%31332446%7%62%
2340
July1st to 10thDay
6%314436%5%6%10%52%
2340
11th to 20thDay
421232345%9%64%
2340
21st to endDay
32134345%8%9%58%
2546
August1st to 10thDay
321342445%8%63%
2299
11th to 20thDay
6%314435%5%7%10%53%
2123
21st to endDay
43244345%6%8%58%
2376
September1st to 10thDay
10%21341445%6%59%
2040
11th to 20thDay
11%415%6%3345%8%50%
1980
21st to endDay
9%214334446%60%
1980
October1st to 10thDay
6%313424345%63%
1980
11th to 20thDay
9%222322335%67%
1921
21st to endDay
10%42332333465%
1940
November1st to 10thDay
7%312323446%65%
1673
11th to 20thDay
5%313222436%69%
1710
21st to endDay
11%423222345%62%
1710
December1st to 10thDay
8%5%25%333245%60%
1710
11th to 20thDay
9%3245%23447%56%
2161
21st to endDay
9%5%25%323346%56%
3135
January1st to 10thNight
9%5%24324346%59%
4108
11th to 20thNight
4323323336%67%
4120
21st to endNight
10%8%34323336%54%
4341
February1st to 10thNight
9%425%32335%6%58%
2280
11th to 20thNight
8%5%2432335%7%59%
2218
21st to endNight
8%423333446%58%
1884
March1st to 10thNight
8%6%25%5%2435%6%54%
2263
11th to 20thNight
12%423323346%58%
2090
21st to endNight
6%424324447%60%
2255
April1st to 10thNight
6%4234245%46%62%
1877
11th to 20thNight
11%423223446%59%
1777
21st to endNight
7%32332345%7%63%
1697
May1st to 10thNight
8%2234245%5%6%59%
1620
11th to 20thNight
8%4233345%6%7%56%
1593
21st to endNight
6%3134345%5%10%56%
1745
June1st to 10thNight
431342447%10%57%
1620
11th to 20thNight
33233235%6%10%58%
1620
21st to endNight
321332436%8%64%
1620
July1st to 10thNight
4324435%7%6%10%52%
1620
11th to 20thNight
311222346%10%65%
1620
21st to endNight
22124245%6%12%59%
1772
August1st to 10thNight
211132447%11%64%
1636
11th to 20thNight
5%324435%7%7%11%50%
1778
21st to endNight
32132235%6%11%62%
1980
September1st to 10thNight
8%3244245%5%7%57%
1917
11th to 20thNight
10%5%245%3336%8%50%
1980
21st to endNight
7%21343445%6%62%
1980
October1st to 10thNight
7%413323447%63%
1980
11th to 20thNight
8%32231223469%
2020
21st to endNight
7%313322235%68%
2412
November1st to 10thNight
7%312212346%69%
2405
11th to 20thNight
4313323347%68%
2470
21st to endNight
8%423323346%62%
2470
December1st to 10thNight
9%423223345%64%
2470
11th to 20thNight
8%4244345%5%6%58%
3036
21st to endNight
7%5%24433445%59%
4532

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
27%35%26%26%13%
2848
11th to 20thDay
21%36%25%36%10%
2850
21st to endDay
35%3423%28%7%
3341
February1st to 10thDay
28%36%21%31%11%
1900
11th to 20thDay
30%35%23%24%14%
1859
21st to endDay
31%3317%28%19%
1570
March1st to 10thDay
32%36%17%26%16%
1915
11th to 20thDay
29%48%23%24%12%
2090
21st to endDay
28%47%24%25%12%
2255
April1st to 10thDay
25%37%22%27%17%
2078
11th to 20thDay
31%37%17%24%17%
2134
21st to endDay
27%48%23%28%10%
2260
May1st to 10thDay
28%5%8%19%26%14%
2340
11th to 20thDay
29%5%11%25%22%8%
2306
21st to endDay
30%6%13%24%21%7%
2531
June1st to 10thDay
24%5%13%29%20%8%
2340
11th to 20thDay
21%5%10%25%28%10%
2340
21st to endDay
22%411%25%28%10%
2340
July1st to 10thDay
27%6%13%28%21%4
2276
11th to 20thDay
17%5%8%30%32%8%
2271
21st to endDay
17%6%14%33%27%4
2405
August1st to 10thDay
18%5%11%30%26%11%
2285
11th to 20thDay
25%7%14%28%21%6%
2123
21st to endDay
23%6%12%26%24%9%
2376
September1st to 10thDay
26%48%24%26%12%
2040
11th to 20thDay
34%49%19%24%9%
1980
21st to endDay
25%45%21%32%12%
1980
October1st to 10thDay
23%410%25%24%14%
1980
11th to 20thDay
23%35%16%31%23%
1921
21st to endDay
25%35%23%29%16%
1940
November1st to 10thDay
22%27%22%30%17%
1673
11th to 20thDay
19%25%25%33%16%
1710
21st to endDay
27%25%18%31%17%
1710
December1st to 10thDay
28%36%26%26%11%
1710
11th to 20thDay
30%310%16%30%12%
2159
21st to endDay
30%36%22%29%10%
3135
January1st to 10thNight
27%35%27%28%9%
4108
11th to 20thNight
20%210%21%34%12%
4120
21st to endNight
33%36%18%29%11%
4341
February1st to 10thNight
28%37%19%28%15%
2280
11th to 20thNight
28%27%22%25%17%
2218
21st to endNight
28%3417%26%23%
1884
March1st to 10thNight
31%36%15%24%21%
2263
11th to 20thNight
29%37%22%24%15%
2090
21st to endNight
24%49%25%26%12%
2255
April1st to 10thNight
23%47%21%25%21%
1877
11th to 20thNight
27%49%18%25%17%
1777
21st to endNight
22%5%9%25%27%12%
1697
May1st to 10thNight
26%49%21%20%20%
1620
11th to 20thNight
26%6%14%21%20%12%
1594
21st to endNight
25%7%13%24%23%9%
1746
June1st to 10thNight
21%5%16%29%21%7%
1620
11th to 20thNight
20%5%12%25%28%10%
1620
21st to endNight
19%411%25%27%15%
1620
July1st to 10thNight
26%5%15%29%19%6%
1575
11th to 20thNight
14%6%7%27%33%13%
1566
21st to endNight
16%5%10%32%31%5%
1673
August1st to 10thNight
13%410%29%32%12%
1626
11th to 20thNight
24%7%13%25%24%6%
1778
21st to endNight
17%5%12%30%25%12%
1980
September1st to 10thNight
26%6%8%21%26%14%
1917
11th to 20thNight
32%5%10%19%23%11%
1980
21st to endNight
24%37%21%29%17%
1980
October1st to 10thNight
23%310%21%27%16%
1980
11th to 20thNight
22%2417%28%27%
2020
21st to endNight
21%2420%33%20%
2412
November1st to 10thNight
19%27%24%29%19%
2405
11th to 20thNight
18%35%21%36%18%
2470
21st to endNight
25%35%18%32%18%
2470
December1st to 10thNight
24%36%24%28%16%
2470
11th to 20thNight
27%35%19%31%14%
3037
21st to endNight
27%45%20%29%15%
4532

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
9%9%39%30%12%1
270
11th to 20thDay
13%11%31%33%10%1
270
21st to endDay
11%9%39%29%10%1
297
February1st to 10thDay
14%10%39%30%7%1
270
11th to 20thDay
11%11%46%24%8%
270
21st to endDay
22%12%35%26%41
225
March1st to 10thDay
11%7%41%31%9%
270
11th to 20thDay
17%12%37%23%10%2
270
21st to endDay
10%12%42%27%9%
285
April1st to 10thDay
10%13%44%25%9%
338
11th to 20thDay
15%11%47%22%41
412
21st to endDay
11%11%41%26%9%2
520
May1st to 10thDay
9%7%38%34%11%1
603
11th to 20thDay
13%5%28%34%16%4
625
21st to endDay
10%428%37%16%5%
679
June1st to 10thDay
6%217%42%27%7%
630
11th to 20thDay
5%220%46%23%4
630
21st to endDay
5%111%43%32%9%
630
July1st to 10thDay
5%16%36%36%15%
621
11th to 20thDay
315%34%44%13%
618
21st to endDay
21430%48%16%
684
August1st to 10thDay
41436%42%13%
597
11th to 20thDay
6%25%34%38%14%
437
21st to endDay
5%15%30%42%17%
495
September1st to 10thDay
10%5%27%40%18%
330
11th to 20thDay
7%16%30%37%17%
270
21st to endDay
13%26%29%36%15%
270
October1st to 10thDay
5%120%36%33%4
270
11th to 20thDay
8%5%27%38%19%3
270
21st to endDay
20%7%25%30%16%2
297
November1st to 10thDay
15%131%30%20%2
270
11th to 20thDay
10%8%30%30%17%6%
270
21st to endDay
17%9%31%27%13%3
270
December1st to 10thDay
12%441%30%11%2
270
11th to 20thDay
9%8%33%37%11%2
270
21st to endDay
18%10%38%24%9%1
297
January1st to 10thNight
8%8%36%38%9%
950
11th to 20thNight
9%10%34%38%9%
950
21st to endNight
9%8%35%39%8%
932
February1st to 10thNight
11%9%38%34%8%
760
11th to 20thNight
11%11%41%31%6%
744
21st to endNight
11%12%45%28%4
628
March1st to 10thNight
11%12%42%30%5%
743
11th to 20thNight
14%11%40%28%7%
570
21st to endNight
7%15%43%31%4
615
April1st to 10thNight
6%10%52%28%3
540
11th to 20thNight
12%11%49%25%3
533
21st to endNight
8%9%49%29%6%
540
May1st to 10thNight
9%8%48%30%5%
540
11th to 20thNight
9%5%39%32%14%1
531
21st to endNight
7%436%40%12%1
584
June1st to 10thNight
5%229%48%15%1
540
11th to 20thNight
3237%49%8%
540
21st to endNight
4225%46%22%1
540
July1st to 10thNight
5%110%47%33%4
525
11th to 20thNight
48%52%34%3
522
21st to endNight
21351%41%2
591
August1st to 10thNight
28%50%37%2
537
11th to 20thNight
6%29%45%36%2
534
21st to endNight
37%47%39%4
594
September1st to 10thNight
8%111%43%34%3
540
11th to 20thNight
11%215%42%29%1
540
21st to endNight
7%219%45%25%2
540
October1st to 10thNight
8%425%43%20%1
540
11th to 20thNight
10%434%40%12%1
580
21st to endNight
8%6%33%36%16%1
828
November1st to 10thNight
8%5%31%40%15%1
925
11th to 20thNight
5%6%36%40%12%1
950
21st to endNight
11%7%33%37%11%1
950
December1st to 10thNight
11%7%31%40%10%
950
11th to 20thNight
12%7%37%35%8%
950
21st to endNight
11%8%36%37%7%
1045
Page generated at 2024-03-24 22:36:58. Version ac07

Copyright © 2024 Attilla Danko.


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