Kisatchie Star Party
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kisatchie Star Party clear sky chart from 2005-11-06 to 2024-01-12.

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
47%
23782
23%
74148
16%
23725
54%
23725
29%
44714

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
28%
950
24%
2458
8%
946
38%
946
28%
1610
January11th to 20thNight
30%
906
25%
2354
10%
906
39%
906
28%
1549
January21st to endNight
26%
990
25%
2574
7%
990
36%
990
27%
1724
February1st to 10thNight
26%
900
21%
2340
7%
900
35%
900
27%
1565
February11th to 20thNight
23%
711
20%
2107
7%
708
33%
708
23%
1376
February21st to endNight
20%
444
22%
1628
9%
444
33%
444
15%
1091
March1st to 10thNight
31%
540
23%
1980
12%
540
44%
540
21%
1233
March11th to 20thNight
29%
540
21%
1980
12%
540
41%
540
19%
1256
March21st to endNight
32%
594
23%
2178
15%
594
43%
594
25%
1265
April1st to 10thNight
30%
540
24%
1868
14%
540
45%
540
26%
1095
April11th to 20thNight
33%
533
23%
1775
14%
533
45%
533
24%
1100
April21st to endNight
37%
540
25%
1800
16%
540
52%
540
30%
1009
May1st to 10thNight
36%
540
19%
1800
14%
540
47%
540
26%
1084
May11th to 20thNight
49%
531
22%
1710
20%
531
57%
531
33%
997
May21st to endNight
60%
584
24%
1745
20%
582
67%
582
34%
1030
June1st to 10thNight
68%
540
18%
1620
18%
540
71%
540
35%
945
June11th to 20thNight
73%
540
20%
1620
20%
540
77%
540
44%
851
June21st to endNight
71%
540
21%
1620
20%
540
75%
540
34%
945
July1st to 10thNight
74%
525
13%
1575
15%
525
76%
525
32%
961
July11th to 20thNight
77%
522
17%
1566
19%
522
80%
522
36%
915
July21st to endNight
76%
591
18%
1673
21%
558
78%
558
35%
974
August1st to 10thNight
84%
537
20%
1631
22%
534
86%
534
46%
836
August11th to 20thNight
78%
534
20%
1776
24%
534
79%
534
32%
1022
August21st to endNight
69%
594
16%
1980
19%
594
70%
594
25%
1266
September1st to 10thNight
74%
540
22%
1800
24%
540
75%
540
32%
1044
September11th to 20thNight
64%
540
22%
1884
23%
540
66%
540
25%
1169
September21st to endNight
68%
584
30%
2024
31%
584
70%
584
35%
1089
October1st to 10thNight
70%
720
29%
2160
24%
720
72%
720
43%
1147
October11th to 20thNight
55%
720
33%
2160
22%
720
63%
720
38%
1207
October21st to endNight
51%
792
33%
2376
23%
792
58%
792
38%
1321
November1st to 10thNight
52%
740
30%
2220
23%
740
59%
740
39%
1239
November11th to 20thNight
46%
760
29%
2280
21%
760
53%
760
33%
1324
November21st to endNight
37%
760
27%
2280
17%
760
46%
760
26%
1460
December1st to 10thNight
36%
874
26%
2394
13%
874
46%
874
27%
1576
December11th to 20thNight
31%
948
24%
2876
10%
948
39%
948
22%
1864
December21st to endNight
31%
1038
14%
4336
9%
1026
38%
1026
17%
2575

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
12%6%35%6%45%5%6%7%41%
75017
Night
12%6%25%43445%7%48%
74711
TransparencyDay
41%7%11%18%17%6%
74742
Night
35%6%12%19%20%8%
74507
SeeingDay
14%7%22%26%23%8%
13890
Night
15%8%25%32%18%3
23791

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
19%6%35%423445%45%
1707
11th to 20thDay
17%7%45%5%23345%45%
1629
21st to endDay
19%7%35%5%23345%44%
1782
February1st to 10thDay
17%9%45%6%44435%39%
1620
11th to 20thDay
20%9%35%5%2443441%
1752
21st to endDay
20%8%37%5%34446%36%
1628
March1st to 10thDay
19%9%45%5%34436%38%
1980
11th to 20thDay
17%8%36%5%445%5%6%37%
1980
21st to endDay
13%7%36%6%44446%43%
2178
April1st to 10thDay
12%6%35%6%45%6%5%6%42%
2092
11th to 20thDay
18%6%35%6%3445%7%40%
2134
21st to endDay
11%6%36%6%45%5%5%7%44%
2160
May1st to 10thDay
11%6%37%6%35%6%6%8%39%
2160
11th to 20thDay
10%6%346%36%5%6%8%42%
2179
21st to endDay
8%5%26%7%47%6%8%10%36%
2531
June1st to 10thDay
7%6%36%7%5%6%7%8%9%38%
2340
11th to 20thDay
5%426%7%5%7%7%8%11%39%
2340
21st to endDay
7%5%25%7%6%8%9%8%10%32%
2340
July1st to 10thDay
10%5%36%7%5%7%8%8%10%33%
2340
11th to 20thDay
7%436%8%5%7%7%8%11%33%
2340
21st to endDay
7%6%27%6%5%8%7%8%10%34%
2546
August1st to 10thDay
4326%7%5%7%8%9%10%39%
2294
11th to 20thDay
6%425%7%5%6%7%8%12%37%
2125
21st to endDay
12%436%7%5%6%9%7%9%33%
2376
September1st to 10thDay
8%6%27%6%45%6%6%7%42%
2160
11th to 20thDay
14%6%25%5%45%5%6%8%40%
2070
21st to endDay
11%325%445%5%6%7%49%
1918
October1st to 10thDay
6%5%245%33346%59%
1800
11th to 20thDay
11%42444345%6%53%
1800
21st to endDay
14%5%245%24336%51%
1980
November1st to 10thDay
10%5%35%443445%52%
1858
11th to 20thDay
12%5%25%433345%52%
1900
21st to endDay
17%7%35%5%245%45%45%
1900
December1st to 10thDay
15%7%345%345%46%44%
1782
11th to 20thDay
15%11%35%5%3445%6%39%
2161
21st to endDay
16%8%36%5%33345%43%
3135
January1st to 10thNight
16%7%25%423445%47%
2458
11th to 20thNight
17%6%35%423445%46%
2354
21st to endNight
18%9%34423345%45%
2574
February1st to 10thNight
15%8%36%433347%44%
2340
11th to 20thNight
21%8%245%23345%44%
2106
21st to endNight
20%9%45%5%24446%38%
1628
March1st to 10thNight
17%7%34434449%41%
1980
11th to 20thNight
15%6%26%5%345%5%7%42%
1980
21st to endNight
12%6%25%4335%47%48%
2178
April1st to 10thNight
11%5%35%5%345%6%9%46%
1868
11th to 20thNight
14%6%345%25%5%5%6%45%
1775
21st to endNight
9%5%25%5%3446%7%51%
1800
May1st to 10thNight
10%6%36%5%345%6%9%45%
1800
11th to 20thNight
9%5%25%5%245%5%7%50%
1710
21st to endNight
6%425%435%5%6%12%48%
1745
June1st to 10thNight
5%425%5%35%5%6%11%49%
1620
11th to 20thNight
42233245%7%12%56%
1620
21st to endNight
6%424435%5%8%12%47%
1620
July1st to 10thNight
6%426%5%45%6%8%12%42%
1620
11th to 20thNight
5%324435%6%8%12%48%
1620
21st to endNight
5%425%5%35%5%8%13%48%
1772
August1st to 10thNight
32133245%7%13%56%
1641
11th to 20thNight
44245%35%7%7%12%46%
1776
21st to endNight
9%5%35%6%45%6%7%9%41%
1980
September1st to 10thNight
7%4345%345%7%9%50%
1800
11th to 20thNight
11%5%36%5%35%5%5%7%45%
1884
21st to endNight
10%424314446%57%
2024
October1st to 10thNight
6%313424447%60%
2160
11th to 20thNight
10%424423446%56%
2160
21st to endNight
12%414423345%58%
2376
November1st to 10thNight
10%5%24423446%57%
2220
11th to 20thNight
10%5%2442445%6%53%
2280
21st to endNight
15%6%36%5%345%46%44%
2280
December1st to 10thNight
18%7%35%43345%6%44%
2394
11th to 20thNight
14%9%35%434345%46%
3036
21st to endNight
16%9%25%42445%5%44%
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
42%46%19%21%9%
1708
11th to 20thDay
43%45%17%23%9%
1629
21st to endDay
45%35%14%23%10%
1782
February1st to 10thDay
48%5%6%13%18%10%
1620
11th to 20thDay
49%36%16%17%9%
1762
21st to endDay
50%5%7%11%16%11%
1628
March1st to 10thDay
48%48%15%17%9%
1980
11th to 20thDay
47%6%8%13%21%5%
1980
21st to endDay
42%5%8%16%23%5%
2178
April1st to 10thDay
41%7%9%19%16%7%
2092
11th to 20thDay
44%5%9%17%16%8%
2134
21st to endDay
39%6%10%20%21%5%
2160
May1st to 10thDay
42%7%10%20%15%6%
2160
11th to 20thDay
39%7%12%25%14%3
2183
21st to endDay
40%11%15%22%13%
2531
June1st to 10thDay
39%10%16%19%14%1
2340
11th to 20thDay
36%10%14%24%15%1
2340
21st to endDay
42%12%16%18%11%1
2340
July1st to 10thDay
44%13%17%18%7%1
2276
11th to 20thDay
40%13%18%20%8%1
2271
21st to endDay
41%12%19%21%7%1
2405
August1st to 10thDay
34%12%20%24%10%
2280
11th to 20thDay
36%12%19%22%10%1
2125
21st to endDay
43%11%16%19%10%1
2376
September1st to 10thDay
38%10%14%18%15%5%
2160
11th to 20thDay
41%9%14%13%18%6%
2070
21st to endDay
34%6%10%22%20%9%
1918
October1st to 10thDay
27%5%9%21%24%13%
1800
11th to 20thDay
32%46%18%26%14%
1800
21st to endDay
34%5%5%16%26%15%
1980
November1st to 10thDay
34%5%8%17%25%11%
1858
11th to 20thDay
35%46%14%28%12%
1900
21st to endDay
43%48%16%22%9%
1900
December1st to 10thDay
41%5%10%19%17%8%
1782
11th to 20thDay
45%5%6%12%25%7%
2159
21st to endDay
44%46%14%27%5%
3135
January1st to 10thNight
40%46%17%25%9%
2458
11th to 20thNight
41%47%18%21%10%
2354
21st to endNight
43%46%15%22%11%
2574
February1st to 10thNight
43%38%18%18%11%
2340
11th to 20thNight
44%46%17%20%9%
2107
21st to endNight
49%6%7%11%14%14%
1628
March1st to 10thNight
43%5%9%14%19%10%
1980
11th to 20thNight
43%6%9%14%20%7%
1980
21st to endNight
36%6%9%17%25%6%
2178
April1st to 10thNight
36%6%11%21%16%10%
1868
11th to 20thNight
39%7%9%17%17%12%
1775
21st to endNight
32%6%12%20%25%6%
1800
May1st to 10thNight
36%8%12%18%19%8%
1800
11th to 20thNight
31%7%12%24%22%4
1711
21st to endNight
30%8%17%25%19%1
1746
June1st to 10thNight
28%9%18%24%19%1
1620
11th to 20thNight
20%8%20%34%15%3
1620
21st to endNight
28%10%20%27%14%1
1620
July1st to 10thNight
31%10%29%21%8%1
1575
11th to 20thNight
25%12%29%24%9%1
1566
21st to endNight
25%12%27%23%11%2
1673
August1st to 10thNight
18%9%29%32%11%1
1631
11th to 20thNight
28%11%23%24%12%2
1776
21st to endNight
36%12%20%19%10%3
1980
September1st to 10thNight
29%10%19%21%14%7%
1800
11th to 20thNight
37%9%12%17%16%8%
1884
21st to endNight
29%6%10%21%21%13%
2024
October1st to 10thNight
24%6%12%21%22%15%
2160
11th to 20thNight
29%5%8%16%27%15%
2160
21st to endNight
29%47%17%24%18%
2376
November1st to 10thNight
29%410%18%27%13%
2220
11th to 20thNight
32%5%9%15%25%14%
2280
21st to endNight
42%47%15%23%10%
2280
December1st to 10thNight
41%5%10%17%20%7%
2394
11th to 20thNight
42%46%12%24%12%
3037
21st to endNight
41%5%7%17%23%7%
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
23%18%40%14%41
270
11th to 20thDay
25%16%37%16%5%
243
21st to endDay
28%20%33%17%2
264
February1st to 10thDay
24%18%35%16%6%1
240
11th to 20thDay
35%17%33%14%1
240
21st to endDay
32%22%32%12%1
198
March1st to 10thDay
27%16%35%17%5%
240
11th to 20thDay
21%19%37%20%3
240
21st to endDay
17%24%36%19%4
264
April1st to 10thDay
20%15%36%23%6%
352
11th to 20thDay
26%12%28%22%11%1
412
21st to endDay
14%13%34%29%9%2
420
May1st to 10thDay
15%10%35%27%13%1
423
11th to 20thDay
14%426%31%19%5%
502
21st to endDay
9%424%35%21%7%
679
June1st to 10thDay
9%216%35%27%10%
630
11th to 20thDay
7%315%38%30%8%
630
21st to endDay
9%212%28%37%13%
630
July1st to 10thDay
8%211%27%38%14%
621
11th to 20thDay
6%25%26%44%16%
618
21st to endDay
7%16%28%43%15%
684
August1st to 10thDay
5%16%24%44%20%
592
11th to 20thDay
6%2421%46%20%
439
21st to endDay
12%27%18%37%24%
495
September1st to 10thDay
8%16%25%43%17%
450
11th to 20thDay
13%39%26%33%16%
360
21st to endDay
13%210%30%32%12%
270
October1st to 10thDay
9%217%42%23%6%
270
11th to 20thDay
9%6%32%24%23%7%
270
21st to endDay
22%8%31%24%10%4
297
November1st to 10thDay
14%9%26%34%13%4
270
11th to 20thDay
16%12%37%26%8%2
270
21st to endDay
21%16%35%20%6%2
270
December1st to 10thDay
19%11%37%21%8%3
270
11th to 20thDay
24%13%35%22%5%
270
21st to endDay
23%15%39%18%31
297
January1st to 10thNight
20%14%35%24%7%
950
11th to 20thNight
22%13%31%26%8%
906
21st to endNight
24%12%35%27%3
990
February1st to 10thNight
21%14%35%26%4
900
11th to 20thNight
24%16%34%23%3
711
21st to endNight
25%18%34%21%2
444
March1st to 10thNight
21%12%32%30%5%
540
11th to 20thNight
19%12%34%28%5%1
540
21st to endNight
17%9%40%26%8%
594
April1st to 10thNight
14%10%42%27%6%
540
11th to 20thNight
18%12%34%25%12%
533
21st to endNight
11%11%39%29%10%1
540
May1st to 10thNight
14%8%37%31%11%1
540
11th to 20thNight
10%5%30%35%18%3
531
21st to endNight
7%324%39%24%4
584
June1st to 10thNight
7%114%41%32%4
540
11th to 20thNight
4216%47%27%3
540
21st to endNight
8%210%38%34%8%
540
July1st to 10thNight
6%17%42%36%9%
525
11th to 20thNight
417%40%38%10%
522
21st to endNight
5%16%39%40%8%
591
August1st to 10thNight
415%37%44%9%
537
11th to 20thNight
6%7%38%40%9%
534
21st to endNight
9%29%27%41%11%
594
September1st to 10thNight
7%16%34%43%9%
540
11th to 20thNight
13%29%27%41%8%
540
21st to endNight
13%210%32%37%6%
584
October1st to 10thNight
8%214%40%31%6%
720
11th to 20thNight
11%6%23%38%20%3
720
21st to endNight
15%7%24%35%17%2
792
November1st to 10thNight
12%5%26%34%21%2
740
11th to 20thNight
13%9%27%36%15%
760
21st to endNight
19%11%30%27%12%1
760
December1st to 10thNight
23%11%28%29%9%
874
11th to 20thNight
23%11%29%29%6%1
950
21st to endNight
22%13%28%31%6%
1045
Page generated at 2024-01-08 21:31:26. Version ac07

Copyright 2024 Attilla Danko


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