KS Oil Patch Observatory
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the KS Oil Patch Observatory 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
43%
24386
27%
74356
16%
24327
54%
24327
37%
41176

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
36%
950
30%
2458
12%
946
49%
946
39%
1441
January11th to 20thNight
35%
911
29%
2367
12%
911
47%
911
38%
1399
January21st to endNight
36%
990
33%
2574
14%
990
48%
990
43%
1471
February1st to 10thNight
30%
846
23%
2286
8%
846
41%
846
33%
1402
February11th to 20thNight
30%
704
23%
2098
10%
700
40%
700
30%
1231
February21st to endNight
31%
592
32%
1776
12%
592
46%
592
33%
994
March1st to 10thNight
34%
635
27%
2075
13%
635
48%
635
32%
1134
March11th to 20thNight
34%
540
22%
1980
16%
540
46%
540
28%
1080
March21st to endNight
28%
594
21%
2178
10%
594
44%
594
24%
1294
April1st to 10thNight
30%
540
24%
1973
14%
540
48%
540
31%
1008
April11th to 20thNight
28%
533
23%
1691
12%
533
44%
533
28%
991
April21st to endNight
32%
540
25%
1620
15%
540
48%
540
30%
966
May1st to 10thNight
33%
540
20%
1620
14%
540
44%
540
27%
1016
May11th to 20thNight
44%
531
22%
1594
18%
531
53%
531
35%
909
May21st to endNight
46%
582
18%
1745
12%
582
54%
582
33%
1037
June1st to 10thNight
55%
540
20%
1620
14%
540
63%
540
40%
876
June11th to 20thNight
48%
540
21%
1620
12%
540
57%
540
45%
853
June21st to endNight
53%
540
25%
1620
16%
540
61%
540
49%
816
July1st to 10thNight
69%
525
19%
1575
17%
525
72%
525
42%
857
July11th to 20thNight
74%
522
26%
1566
24%
522
79%
522
53%
756
July21st to endNight
71%
591
24%
1673
25%
558
73%
558
39%
936
August1st to 10thNight
65%
537
23%
1601
22%
534
72%
534
41%
876
August11th to 20thNight
67%
534
29%
1600
30%
534
72%
534
41%
873
August21st to endNight
71%
594
28%
1905
29%
594
76%
594
43%
966
September1st to 10thNight
61%
540
28%
1970
27%
540
69%
540
38%
977
September11th to 20thNight
52%
540
28%
1980
23%
540
63%
540
32%
1069
September21st to endNight
54%
540
32%
1980
28%
540
63%
540
40%
944
October1st to 10thNight
51%
540
33%
1980
27%
540
60%
540
35%
1011
October11th to 20thNight
40%
715
35%
2155
15%
715
55%
715
45%
1076
October21st to endNight
41%
796
32%
2380
16%
796
53%
796
42%
1241
November1st to 10thNight
44%
925
32%
2405
12%
925
56%
925
51%
1277
November11th to 20thNight
38%
950
32%
2470
11%
950
52%
950
46%
1354
November21st to endNight
42%
950
31%
2470
15%
950
52%
950
42%
1422
December1st to 10thNight
42%
950
30%
2470
13%
950
54%
950
43%
1409
December11th to 20thNight
32%
949
31%
2871
11%
948
45%
948
32%
1635
December21st to endNight
33%
1040
20%
4410
13%
1026
47%
1026
23%
2579

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
9%5%2443445%7%54%
74909
Night
8%42442345%7%56%
74850
TransparencyDay
30%6%12%26%21%5%
74634
Night
27%6%12%26%23%7%
74645
SeeingDay
11%8%28%31%18%4
14372
Night
10%9%34%35%12%1
24394

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%5%3442335%6%60%
1707
11th to 20thDay
10%6%3433345%6%53%
1638
21st to endDay
7%5%25%43335%8%55%
1782
February1st to 10thDay
8%9%46%5%23346%49%
1688
11th to 20thDay
6%5%35%6%3345%7%54%
1749
21st to endDay
7%6%243245%5%7%55%
1480
March1st to 10thDay
8%5%35%5%345%5%7%50%
1883
11th to 20thDay
14%7%24424347%49%
1980
21st to endDay
11%7%35%5%3436%6%46%
2178
April1st to 10thDay
10%42442445%8%54%
1984
11th to 20thDay
13%7%245%34447%48%
2217
21st to endDay
16%5%2443345%6%48%
2340
May1st to 10thDay
14%6%35%434446%47%
2340
11th to 20thDay
11%4244345%5%7%51%
2302
21st to endDay
11%6%35%5%45%5%6%7%43%
2531
June1st to 10thDay
5%32443445%10%55%
2340
11th to 20thDay
6%323435%5%6%8%56%
2340
21st to endDay
6%3133345%6%8%58%
2340
July1st to 10thDay
8%425%435%5%6%8%51%
2340
11th to 20thDay
4213325%5%6%10%59%
2340
21st to endDay
6%3245%45%5%7%8%50%
2546
August1st to 10thDay
5%4245%35%6%6%10%50%
2328
11th to 20thDay
7%42442445%9%54%
2301
21st to endDay
43245%345%5%8%58%
2447
September1st to 10thDay
10%4244245%5%7%55%
1990
11th to 20thDay
10%5%24424446%54%
1980
21st to endDay
7%423334347%61%
1980
October1st to 10thDay
12%323322346%59%
1965
11th to 20thDay
10%412323345%65%
1800
21st to endDay
10%5%24323335%60%
1974
November1st to 10thDay
6%323323347%64%
1673
11th to 20thDay
8%424323436%62%
1710
21st to endDay
10%5%13323336%61%
1710
December1st to 10thDay
8%4245%2335%7%58%
1710
11th to 20thDay
9%6%35%433446%54%
2161
21st to endDay
9%8%47%7%35%45%7%41%
3135
January1st to 10thNight
5%5%35%42345%6%57%
2458
11th to 20thNight
7%435%42445%5%57%
2367
21st to endNight
7%5%24423345%61%
2574
February1st to 10thNight
9%7%45%42445%6%50%
2286
11th to 20thNight
10%7%35%434446%51%
2098
21st to endNight
8%6%45%423345%56%
1776
March1st to 10thNight
7%425%4245%47%55%
2075
11th to 20thNight
12%6%24324447%52%
1980
21st to endNight
11%6%345%3446%7%46%
2178
April1st to 10thNight
9%41333445%8%56%
1973
11th to 20thNight
12%5%24424448%49%
1691
21st to endNight
12%5%2442435%7%51%
1620
May1st to 10thNight
14%5%35%4335%5%7%47%
1620
11th to 20thNight
10%5%243235%5%8%53%
1593
21st to endNight
10%423425%6%7%11%46%
1745
June1st to 10thNight
5%313425%6%7%10%55%
1620
11th to 20thNight
6%3133145%7%10%57%
1620
21st to endNight
5%31332245%11%60%
1620
July1st to 10thNight
5%3244245%7%11%53%
1620
11th to 20thNight
32133235%6%11%61%
1620
21st to endNight
6%325%4345%6%10%52%
1772
August1st to 10thNight
43235%345%7%10%54%
1611
11th to 20thNight
6%42443446%9%55%
1600
21st to endNight
32134345%5%8%61%
1905
September1st to 10thNight
8%423424347%61%
1970
11th to 20thNight
7%5%2443445%8%54%
1980
21st to endNight
5%414323446%63%
1980
October1st to 10thNight
9%42433435%7%58%
1980
11th to 20thNight
8%31322333468%
2155
21st to endNight
9%41332223464%
2380
November1st to 10thNight
7%423312236%66%
2405
11th to 20thNight
7%323333446%64%
2470
21st to endNight
10%5%23313447%59%
2470
December1st to 10thNight
6%5%234235%47%59%
2470
11th to 20thNight
9%5%24423446%57%
3036
21st to endNight
11%7%35%5%3345%7%47%
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
26%412%30%25%3
1708
11th to 20thDay
31%5%13%27%20%4
1638
21st to endDay
29%413%32%19%3
1782
February1st to 10thDay
38%5%12%25%17%5%
1688
11th to 20thDay
30%5%16%24%19%6%
1759
21st to endDay
29%5%10%26%22%8%
1480
March1st to 10thDay
33%6%12%19%21%9%
1883
11th to 20thDay
35%6%10%20%23%5%
1980
21st to endDay
37%6%12%27%13%4
2178
April1st to 10thDay
29%413%26%21%7%
1984
11th to 20thDay
36%6%11%26%17%4
2217
21st to endDay
37%7%11%28%16%2
2340
May1st to 10thDay
39%7%11%19%20%4
2340
11th to 20thDay
31%7%14%29%17%1
2306
21st to endDay
39%9%14%24%11%2
2531
June1st to 10thDay
24%8%20%29%14%5%
2340
11th to 20thDay
24%8%14%27%21%7%
2340
21st to endDay
22%8%14%26%24%7%
2340
July1st to 10thDay
29%7%14%27%18%4
2276
11th to 20thDay
18%8%16%29%23%6%
2271
21st to endDay
27%9%14%27%21%2
2405
August1st to 10thDay
26%11%16%28%16%4
2314
11th to 20thDay
28%7%14%27%19%5%
2301
21st to endDay
22%8%14%26%22%8%
2447
September1st to 10thDay
28%6%11%25%19%10%
1990
11th to 20thDay
31%5%9%27%24%5%
1980
21st to endDay
24%6%11%25%25%8%
1980
October1st to 10thDay
28%411%24%27%6%
1965
11th to 20thDay
23%5%7%24%30%11%
1800
21st to endDay
29%39%25%25%9%
1974
November1st to 10thDay
21%5%9%27%29%9%
1673
11th to 20thDay
25%48%27%28%7%
1710
21st to endDay
27%49%27%27%7%
1710
December1st to 10thDay
27%5%12%31%21%4
1710
11th to 20thDay
31%5%9%27%23%4
2159
21st to endDay
41%7%10%25%16%2
3135
January1st to 10thNight
27%6%10%30%23%4
2458
11th to 20thNight
29%5%9%27%26%4
2367
21st to endNight
27%311%30%25%4
2574
February1st to 10thNight
34%414%23%18%6%
2286
11th to 20thNight
33%5%11%25%20%6%
2098
21st to endNight
30%48%23%22%12%
1776
March1st to 10thNight
29%5%10%22%24%10%
2075
11th to 20thNight
33%412%24%21%7%
1980
21st to endNight
36%7%12%25%16%3
2178
April1st to 10thNight
26%6%11%24%24%8%
1973
11th to 20thNight
34%6%14%24%18%5%
1691
21st to endNight
33%7%12%23%22%3
1620
May1st to 10thNight
37%7%13%18%21%3
1620
11th to 20thNight
28%8%18%28%17%2
1594
21st to endNight
30%9%21%27%11%3
1746
June1st to 10thNight
22%9%19%30%16%3
1620
11th to 20thNight
22%7%16%29%21%5%
1620
21st to endNight
18%7%14%31%22%9%
1620
July1st to 10thNight
23%9%16%28%22%4
1575
11th to 20thNight
16%7%15%29%27%7%
1566
21st to endNight
26%8%13%28%23%2
1673
August1st to 10thNight
23%9%16%30%16%5%
1601
11th to 20thNight
26%6%12%29%23%5%
1600
21st to endNight
20%9%12%26%25%9%
1905
September1st to 10thNight
26%410%24%25%11%
1970
11th to 20thNight
30%7%9%22%27%5%
1980
21st to endNight
22%6%10%23%29%10%
1980
October1st to 10thNight
27%5%10%21%28%9%
1980
11th to 20thNight
22%47%24%32%12%
2155
21st to endNight
25%38%24%28%12%
2380
November1st to 10thNight
21%310%25%29%11%
2405
11th to 20thNight
23%49%28%29%7%
2470
21st to endNight
27%38%25%27%9%
2470
December1st to 10thNight
24%6%13%28%23%6%
2470
11th to 20thNight
29%5%8%30%23%5%
3037
21st to endNight
36%7%12%26%14%5%
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
10%14%39%25%11%1
270
11th to 20thDay
18%13%39%23%7%
246
21st to endDay
10%11%47%27%4
264
February1st to 10thDay
15%15%41%25%32
240
11th to 20thDay
15%15%46%17%8%
240
21st to endDay
9%19%49%19%41
198
March1st to 10thDay
7%18%47%21%7%
240
11th to 20thDay
14%20%37%21%6%2
240
21st to endDay
18%15%44%17%5%
264
April1st to 10thDay
12%14%41%26%7%
244
11th to 20thDay
15%14%44%24%3
495
21st to endDay
19%15%35%20%9%2
600
May1st to 10thDay
15%10%35%28%10%1
603
11th to 20thDay
15%8%31%29%15%2
625
21st to endDay
16%7%29%30%14%3
679
June1st to 10thDay
5%5%24%35%25%7%
630
11th to 20thDay
6%428%38%21%2
630
21st to endDay
6%426%43%20%3
630
July1st to 10thDay
7%312%35%35%9%
621
11th to 20thDay
3212%40%34%9%
618
21st to endDay
8%111%38%33%8%
684
August1st to 10thDay
8%215%40%30%5%
626
11th to 20thDay
7%314%38%33%5%
615
21st to endDay
5%313%36%34%8%
566
September1st to 10thDay
10%112%30%38%9%
280
11th to 20thDay
4218%44%24%7%
270
21st to endDay
13%426%30%20%7%
270
October1st to 10thDay
14%9%29%21%23%4
270
11th to 20thDay
9%8%39%33%9%2
270
21st to endDay
18%12%34%22%10%4
297
November1st to 10thDay
10%10%33%31%12%4
270
11th to 20thDay
14%13%38%21%12%2
270
21st to endDay
19%11%35%23%9%3
270
December1st to 10thDay
7%10%40%29%12%1
270
11th to 20thDay
12%11%36%32%9%
270
21st to endDay
14%20%40%23%2
297
January1st to 10thNight
7%12%39%35%7%
950
11th to 20thNight
9%13%38%32%8%
911
21st to endNight
9%11%41%32%6%
990
February1st to 10thNight
12%13%40%29%5%
846
11th to 20thNight
14%12%39%29%6%
704
21st to endNight
11%15%39%31%4
592
March1st to 10thNight
9%15%40%31%4
635
11th to 20thNight
14%11%37%31%6%1
540
21st to endNight
14%13%42%27%4
594
April1st to 10thNight
12%13%43%25%7%
540
11th to 20thNight
15%14%39%26%5%
533
21st to endNight
14%14%36%27%7%1
540
May1st to 10thNight
17%9%37%29%9%
540
11th to 20thNight
12%8%32%34%14%1
531
21st to endNight
11%7%32%34%15%2
584
June1st to 10thNight
6%6%28%40%20%1
540
11th to 20thNight
6%437%41%11%
540
21st to endNight
5%336%43%13%1
540
July1st to 10thNight
5%118%49%25%2
525
11th to 20thNight
4215%55%23%2
522
21st to endNight
7%213%48%28%2
591
August1st to 10thNight
4218%49%26%
537
11th to 20thNight
7%317%48%24%
534
21st to endNight
4118%44%31%2
594
September1st to 10thNight
8%322%44%21%1
540
11th to 20thNight
8%230%38%20%1
540
21st to endNight
7%5%30%39%18%1
540
October1st to 10thNight
9%6%29%35%19%1
540
11th to 20thNight
10%7%41%34%7%
715
21st to endNight
12%9%35%30%13%1
796
November1st to 10thNight
9%5%38%34%12%1
925
11th to 20thNight
9%10%41%31%9%1
950
21st to endNight
13%11%31%37%8%
950
December1st to 10thNight
10%9%36%36%8%1
950
11th to 20thNight
15%11%37%32%5%
950
21st to endNight
12%12%38%33%5%
1045
Page generated at 2024-01-10 00:25:02. Version ac07

Copyright 2024 Attilla Danko


KS Oil Patch Observatory Clear Sky Chart |Charts Home