Enid
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Enid clear sky chart from 2005-11-06 to 2024-02-20.

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
42%
24475
27%
79612
16%
24365
54%
24365
35%
42876

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
35%
945
28%
4012
11%
926
49%
926
26%
2194
January11th to 20thNight
33%
949
29%
3999
12%
930
46%
930
29%
1881
January21st to endNight
35%
1038
22%
4467
13%
1023
49%
1023
24%
2572
February1st to 10thNight
28%
884
25%
2404
9%
884
39%
884
31%
1501
February11th to 20thNight
27%
741
25%
2212
9%
738
38%
738
33%
1244
February21st to endNight
30%
592
32%
1776
11%
592
46%
592
32%
1008
March1st to 10thNight
31%
610
28%
2050
13%
610
45%
610
31%
1116
March11th to 20thNight
30%
540
24%
1980
13%
540
44%
540
28%
1081
March21st to endNight
24%
594
22%
2178
11%
594
41%
594
24%
1255
April1st to 10thNight
28%
540
26%
1980
14%
540
49%
540
32%
970
April11th to 20thNight
23%
533
26%
1729
10%
533
43%
533
29%
984
April21st to endNight
28%
540
27%
1620
13%
540
46%
540
32%
926
May1st to 10thNight
27%
540
23%
1620
12%
540
45%
540
30%
964
May11th to 20thNight
41%
531
21%
1594
18%
531
50%
531
33%
919
May21st to endNight
46%
583
23%
1745
17%
582
57%
582
37%
981
June1st to 10thNight
55%
540
22%
1620
16%
540
63%
540
42%
852
June11th to 20thNight
47%
540
24%
1620
13%
540
59%
540
46%
829
June21st to endNight
58%
540
27%
1620
20%
540
65%
540
54%
781
July1st to 10thNight
68%
525
21%
1575
20%
525
71%
525
44%
839
July11th to 20thNight
72%
522
28%
1566
26%
522
78%
522
53%
752
July21st to endNight
75%
591
29%
1673
31%
558
77%
558
47%
862
August1st to 10thNight
69%
537
25%
1601
24%
534
75%
534
42%
864
August11th to 20thNight
64%
534
28%
1600
28%
534
70%
534
41%
877
August21st to endNight
74%
594
28%
1924
30%
594
78%
594
45%
945
September1st to 10thNight
63%
540
28%
1980
29%
540
70%
540
40%
958
September11th to 20thNight
56%
540
28%
1980
26%
540
65%
540
32%
1051
September21st to endNight
55%
540
35%
1980
29%
540
66%
540
42%
923
October1st to 10thNight
49%
544
34%
1984
26%
544
60%
544
39%
966
October11th to 20thNight
37%
720
35%
2160
15%
720
51%
720
44%
1095
October21st to endNight
40%
792
33%
2376
15%
792
53%
792
41%
1244
November1st to 10thNight
41%
875
33%
2355
12%
875
55%
875
48%
1253
November11th to 20thNight
39%
950
31%
2470
12%
950
51%
950
44%
1365
November21st to endNight
39%
950
32%
2470
14%
950
49%
950
41%
1407
December1st to 10thNight
38%
950
33%
2470
13%
950
52%
950
43%
1395
December11th to 20thNight
31%
950
32%
2870
11%
948
45%
948
33%
1618
December21st to endNight
34%
1041
21%
4352
13%
1026
48%
1026
23%
2404

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%53%
78800
Night
9%5%2442345%7%56%
80447
TransparencyDay
31%5%11%26%22%6%
78525
Night
29%411%25%24%7%
80242
SeeingDay
12%9%29%30%17%4
14408
Night
11%9%34%34%12%1
24494

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
9%7%26%5%35%45%7%47%
2847
11th to 20thDay
7%6%25%443446%55%
2850
21st to endDay
16%8%35%322335%49%
3135
February1st to 10thDay
11%10%45%5%33336%48%
1790
11th to 20thDay
8%5%36%423346%55%
1839
21st to endDay
10%8%25%423345%54%
1480
March1st to 10thDay
10%7%25%434447%50%
1908
11th to 20thDay
14%7%25%433346%48%
1980
21st to endDay
13%7%36%434346%46%
2178
April1st to 10thDay
8%4245%3445%8%53%
1980
11th to 20thDay
14%5%25%5%35%446%47%
2174
21st to endDay
14%5%25%5%335%5%6%47%
2340
May1st to 10thDay
14%7%25%5%3446%5%46%
2340
11th to 20thDay
12%425%5%2445%8%48%
2302
21st to endDay
12%6%35%7%45%5%5%7%43%
2531
June1st to 10thDay
5%425%435%5%7%9%52%
2340
11th to 20thDay
6%41442445%9%56%
2340
21st to endDay
5%22342445%8%61%
2340
July1st to 10thDay
8%4245%35%5%6%9%50%
2340
11th to 20thDay
4213435%6%6%9%59%
2340
21st to endDay
6%2244346%6%10%53%
2546
August1st to 10thDay
6%324435%5%7%10%53%
2328
11th to 20thDay
6%4245%35%5%8%9%48%
2301
21st to endDay
5%3134345%6%8%58%
2426
September1st to 10thDay
9%41342445%6%57%
1980
11th to 20thDay
11%5%245%3445%6%50%
1980
21st to endDay
9%424323446%60%
1980
October1st to 10thDay
10%414323345%60%
1958
11th to 20thDay
9%41332223467%
1800
21st to endDay
11%5%25%422345%59%
1980
November1st to 10thDay
6%313223346%65%
1721
11th to 20thDay
7%413313336%65%
1710
21st to endDay
10%5%23323346%59%
1710
December1st to 10thDay
8%7%24414446%56%
1710
11th to 20thDay
10%7%25%433445%52%
2161
21st to endDay
8%8%47%7%35%45%6%43%
3135
January1st to 10thNight
9%8%35%423445%53%
4108
11th to 20thNight
5%413435%5%5%6%58%
4120
21st to endNight
17%7%3432333451%
4532
February1st to 10thNight
12%9%34424345%49%
2404
11th to 20thNight
10%6%2442335%6%55%
2212
21st to endNight
9%6%34424446%55%
1776
March1st to 10thNight
7%5%35%5%3445%7%53%
2050
11th to 20thNight
14%6%2432335%5%53%
1980
21st to endNight
12%6%35%5%33447%47%
2178
April1st to 10thNight
9%31442345%8%58%
1980
11th to 20thNight
13%6%24333447%51%
1729
21st to endNight
14%434324347%52%
1620
May1st to 10thNight
12%5%34425%45%8%49%
1620
11th to 20thNight
10%5%243245%7%9%49%
1593
21st to endNight
7%4244335%6%10%51%
1745
June1st to 10thNight
6%32433445%9%57%
1620
11th to 20thNight
5%31342348%10%56%
1620
21st to endNight
411242346%9%64%
1620
July1st to 10thNight
44144345%7%10%55%
1620
11th to 20thNight
322342446%10%61%
1620
21st to endNight
422443346%9%59%
1772
August1st to 10thNight
33145%46%6%7%9%53%
1611
11th to 20thNight
6%3245%35%5%5%8%55%
1600
21st to endNight
22134345%6%9%60%
1924
September1st to 10thNight
8%314323346%62%
1980
11th to 20thNight
9%5%25%33435%7%54%
1980
21st to endNight
6%41432246%7%61%
1980
October1st to 10thNight
8%42432345%6%60%
1984
11th to 20thNight
9%313313345%66%
2160
21st to endNight
10%423323235%63%
2376
November1st to 10thNight
7%413222346%66%
2355
11th to 20thNight
7%413323345%63%
2470
21st to endNight
11%5%22323247%60%
2470
December1st to 10thNight
9%5%2332335%6%60%
2470
11th to 20thNight
9%5%24433246%57%
3036
21st to endNight
12%6%24424447%50%
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
37%310%26%20%3
2848
11th to 20thDay
29%415%24%22%6%
2850
21st to endDay
39%39%24%23%3
3135
February1st to 10thDay
39%311%24%18%5%
1790
11th to 20thDay
32%29%30%20%7%
1849
21st to endDay
34%27%25%23%8%
1480
March1st to 10thDay
35%49%21%21%10%
1908
11th to 20thDay
38%310%20%21%7%
1980
21st to endDay
40%410%24%17%5%
2178
April1st to 10thDay
29%5%11%26%21%7%
1980
11th to 20thDay
38%5%10%24%16%7%
2174
21st to endDay
37%412%26%18%2
2340
May1st to 10thDay
40%5%9%20%21%4
2340
11th to 20thDay
34%5%13%28%17%2
2306
21st to endDay
41%6%13%25%13%3
2531
June1st to 10thDay
27%6%18%28%16%4
2340
11th to 20thDay
26%416%26%21%7%
2340
21st to endDay
21%5%13%28%25%8%
2340
July1st to 10thDay
28%7%15%28%19%3
2276
11th to 20thDay
20%6%12%29%27%6%
2271
21st to endDay
24%7%14%30%23%2
2405
August1st to 10thDay
24%6%16%30%17%6%
2314
11th to 20thDay
30%8%13%23%22%3
2301
21st to endDay
23%6%14%27%22%8%
2426
September1st to 10thDay
28%49%24%23%11%
1980
11th to 20thDay
33%7%9%22%23%6%
1980
21st to endDay
26%48%24%29%8%
1980
October1st to 10thDay
28%39%25%27%8%
1958
11th to 20thDay
23%27%24%32%12%
1800
21st to endDay
29%38%25%25%10%
1980
November1st to 10thDay
21%39%25%30%11%
1721
11th to 20thDay
23%38%28%29%10%
1710
21st to endDay
27%38%29%25%8%
1710
December1st to 10thDay
30%310%32%22%3
1710
11th to 20thDay
35%39%23%26%5%
2159
21st to endDay
41%5%9%25%18%3
3135
January1st to 10thNight
34%49%30%19%5%
4108
11th to 20thNight
25%5%15%23%27%5%
4120
21st to endNight
38%38%22%25%4
4532
February1st to 10thNight
38%39%24%19%7%
2404
11th to 20thNight
32%310%26%22%7%
2212
21st to endNight
31%47%22%23%13%
1776
March1st to 10thNight
31%48%20%25%12%
2050
11th to 20thNight
34%410%23%21%8%
1980
21st to endNight
37%5%12%24%18%5%
2178
April1st to 10thNight
26%411%23%26%11%
1980
11th to 20thNight
34%410%26%17%9%
1729
21st to endNight
31%412%27%23%4
1620
May1st to 10thNight
34%5%12%21%23%4
1620
11th to 20thNight
31%6%14%27%19%3
1594
21st to endNight
28%5%16%32%16%2
1746
June1st to 10thNight
25%5%19%30%18%4
1620
11th to 20thNight
22%5%15%31%22%5%
1620
21st to endNight
18%413%31%23%11%
1620
July1st to 10thNight
23%6%15%31%21%4
1575
11th to 20thNight
18%412%28%30%8%
1566
21st to endNight
22%5%11%30%28%4
1673
August1st to 10thNight
24%7%16%28%19%6%
1601
11th to 20thNight
27%5%14%23%25%6%
1600
21st to endNight
20%7%13%27%24%9%
1924
September1st to 10thNight
24%49%27%25%11%
1980
11th to 20thNight
31%5%10%21%25%8%
1980
21st to endNight
22%5%8%25%31%10%
1980
October1st to 10thNight
25%412%22%27%11%
1984
11th to 20thNight
23%36%20%33%15%
2160
21st to endNight
26%36%25%27%13%
2376
November1st to 10thNight
22%38%24%31%12%
2355
11th to 20thNight
24%37%26%29%10%
2470
21st to endNight
28%37%23%29%10%
2470
December1st to 10thNight
25%411%28%26%5%
2470
11th to 20thNight
30%38%25%27%7%
3037
21st to endNight
35%49%26%22%6%
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
15%13%37%24%10%1
270
11th to 20thDay
19%17%39%22%3
270
21st to endDay
13%16%44%22%41
297
February1st to 10thDay
18%17%40%21%4
270
11th to 20thDay
16%16%44%19%5%
267
21st to endDay
19%25%39%13%41
198
March1st to 10thDay
17%20%41%20%3
240
11th to 20thDay
17%20%40%17%5%
240
21st to endDay
21%17%42%16%4
264
April1st to 10thDay
16%21%37%21%5%
240
11th to 20thDay
19%19%41%20%2
452
21st to endDay
19%19%35%17%9%2
600
May1st to 10thDay
14%11%44%20%8%2
603
11th to 20thDay
17%9%31%30%12%2
625
21st to endDay
14%7%33%28%16%3
679
June1st to 10thDay
7%5%21%39%23%5%
630
11th to 20thDay
7%432%40%14%3
630
21st to endDay
4227%43%20%3
630
July1st to 10thDay
7%312%36%33%9%
621
11th to 20thDay
3314%39%33%8%
618
21st to endDay
6%18%39%37%8%
684
August1st to 10thDay
7%214%45%27%6%
626
11th to 20thDay
7%213%39%32%7%
615
21st to endDay
5%114%38%33%9%
545
September1st to 10thDay
7%13%36%34%9%
270
11th to 20thDay
7%318%43%25%4
270
21st to endDay
12%427%34%16%7%
270
October1st to 10thDay
13%6%29%28%18%6%
270
11th to 20thDay
9%12%39%29%10%1
270
21st to endDay
21%11%31%24%11%2
297
November1st to 10thDay
10%9%39%32%8%3
270
11th to 20thDay
15%11%37%23%11%3
270
21st to endDay
19%13%35%22%10%1
270
December1st to 10thDay
11%13%41%27%7%1
270
11th to 20thDay
17%13%38%23%9%1
270
21st to endDay
14%21%40%21%4
297
January1st to 10thNight
9%11%40%32%8%
950
11th to 20thNight
11%13%38%30%6%
950
21st to endNight
12%13%36%32%5%
1045
February1st to 10thNight
16%14%38%27%5%
884
11th to 20thNight
15%14%41%25%5%
742
21st to endNight
13%16%38%29%4
592
March1st to 10thNight
11%13%42%30%3
610
11th to 20thNight
19%11%36%28%5%
540
21st to endNight
16%15%43%21%5%
594
April1st to 10thNight
13%15%42%24%6%
540
11th to 20thNight
16%15%43%22%4
533
21st to endNight
17%15%38%23%6%1
540
May1st to 10thNight
13%11%45%24%7%
540
11th to 20thNight
13%8%33%32%13%1
531
21st to endNight
8%7%34%36%13%2
584
June1st to 10thNight
8%428%41%19%1
540
11th to 20thNight
6%439%40%11%
540
21st to endNight
3333%47%13%1
540
July1st to 10thNight
5%118%45%30%1
525
11th to 20thNight
4118%47%28%2
522
21st to endNight
4212%54%25%2
591
August1st to 10thNight
4219%46%28%1
537
11th to 20thNight
8%218%45%25%1
534
21st to endNight
3215%45%33%2
594
September1st to 10thNight
10%218%40%27%2
540
11th to 20thNight
11%322%39%24%1
540
21st to endNight
6%6%28%37%20%3
540
October1st to 10thNight
9%432%34%19%2
544
11th to 20thNight
11%9%41%30%9%
720
21st to endNight
13%10%35%30%11%1
792
November1st to 10thNight
9%9%38%34%9%1
875
11th to 20thNight
10%13%36%34%7%1
950
21st to endNight
14%13%32%32%9%
950
December1st to 10thNight
11%10%37%33%8%1
950
11th to 20thNight
15%12%38%30%6%
950
21st to endNight
13%14%36%32%6%
1045
Page generated at 2024-02-17 05:28:37. Version ac07

Copyright 2024 Attilla Danko


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