Burleson
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Burleson clear sky chart from 2005-11-06 to 2024-01-27.

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
46%
24045
29%
74430
18%
23990
57%
23990
37%
40468

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%
948
31%
2458
13%
946
47%
946
41%
1421
January11th to 20thNight
32%
950
29%
2470
9%
950
45%
950
37%
1455
January21st to endNight
33%
1025
31%
2665
11%
1025
45%
1025
35%
1604
February1st to 10thNight
28%
760
27%
2200
10%
760
41%
760
31%
1311
February11th to 20thNight
24%
704
24%
2098
9%
700
36%
700
31%
1249
February21st to endNight
20%
592
28%
1776
7%
592
37%
592
28%
1048
March1st to 10thNight
28%
540
26%
1980
12%
540
45%
540
25%
1139
March11th to 20thNight
30%
540
24%
1980
12%
540
44%
540
26%
1108
March21st to endNight
31%
594
27%
2178
14%
594
49%
594
29%
1152
April1st to 10thNight
27%
540
28%
1980
13%
540
49%
540
31%
1015
April11th to 20thNight
27%
533
25%
1895
14%
533
45%
533
28%
1040
April21st to endNight
31%
540
30%
1630
15%
540
50%
540
37%
904
May1st to 10thNight
33%
540
27%
1620
16%
540
48%
540
34%
925
May11th to 20thNight
41%
531
21%
1594
15%
531
52%
531
35%
924
May21st to endNight
49%
583
24%
1745
17%
582
61%
582
37%
1006
June1st to 10thNight
67%
540
24%
1620
23%
540
75%
540
46%
844
June11th to 20thNight
65%
540
27%
1620
27%
540
71%
540
53%
785
June21st to endNight
71%
540
26%
1620
27%
540
75%
540
45%
852
July1st to 10thNight
72%
525
24%
1575
24%
525
77%
525
45%
838
July11th to 20thNight
82%
522
33%
1566
37%
522
87%
522
62%
706
July21st to endNight
86%
591
30%
1673
35%
558
88%
558
54%
797
August1st to 10thNight
87%
537
38%
1601
41%
534
90%
534
70%
671
August11th to 20thNight
78%
534
35%
1600
37%
534
80%
534
46%
835
August21st to endNight
81%
594
28%
2072
33%
594
82%
594
43%
1006
September1st to 10thNight
74%
540
25%
1980
29%
540
76%
540
37%
1006
September11th to 20thNight
69%
540
24%
1980
26%
540
71%
540
32%
1073
September21st to endNight
71%
540
35%
1980
35%
540
77%
540
45%
915
October1st to 10thNight
64%
540
38%
1980
33%
540
73%
540
46%
893
October11th to 20thNight
52%
718
35%
2158
19%
718
63%
718
45%
1121
October21st to endNight
43%
792
34%
2376
19%
792
53%
792
40%
1287
November1st to 10thNight
49%
740
32%
2220
18%
740
59%
740
40%
1222
November11th to 20thNight
44%
906
31%
2426
14%
906
54%
906
44%
1340
November21st to endNight
33%
950
30%
2470
12%
950
45%
950
35%
1519
December1st to 10thNight
36%
950
33%
2470
12%
950
50%
950
38%
1481
December11th to 20thNight
33%
948
31%
2862
12%
948
44%
948
30%
1702
December21st to endNight
32%
1038
18%
4312
10%
1026
44%
1026
25%
2274

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
10%42443445%7%53%
75044
Night
9%42432345%7%57%
75031
TransparencyDay
31%6%11%22%22%8%
74769
Night
28%5%10%22%24%12%
74826
SeeingDay
11%9%24%29%21%6%
14012
Night
11%8%30%35%14%1
24057

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
12%6%24313346%57%
1707
11th to 20thDay
14%5%23423346%55%
1710
21st to endDay
14%424324345%55%
1836
February1st to 10thDay
14%7%35%43235%5%50%
1775
11th to 20thDay
15%7%35%433435%49%
1749
21st to endDay
20%6%2331223454%
1480
March1st to 10thDay
16%6%2443445%6%47%
1978
11th to 20thDay
13%6%35%5%2445%5%48%
1980
21st to endDay
10%6%34425%35%7%51%
2178
April1st to 10thDay
10%5%26%42445%7%49%
1980
11th to 20thDay
12%5%245%3445%7%49%
2012
21st to endDay
12%425%435%45%7%50%
2326
May1st to 10thDay
12%435%4345%5%8%48%
2340
11th to 20thDay
12%5%25%5%25%5%6%8%45%
2302
21st to endDay
10%6%36%6%36%5%6%9%41%
2531
June1st to 10thDay
4323445%5%7%10%53%
2340
11th to 20thDay
43235%35%5%6%9%55%
2340
21st to endDay
5%324435%5%5%9%53%
2340
July1st to 10thDay
6%5%25%6%36%6%7%10%45%
2340
11th to 20thDay
311243446%9%62%
2340
21st to endDay
3224436%6%8%11%52%
2546
August1st to 10thDay
2112435%5%6%9%63%
2328
11th to 20thDay
7%4245%35%5%6%9%50%
2301
21st to endDay
5%3245%35%5%7%10%52%
2278
September1st to 10thDay
9%32443445%6%55%
1980
11th to 20thDay
11%426%5%35%5%6%7%46%
1980
21st to endDay
7%31343446%7%59%
1980
October1st to 10thDay
43234335%48%62%
1962
11th to 20thDay
11%313323436%61%
1800
21st to endDay
13%41332323462%
1980
November1st to 10thDay
11%5%24322445%57%
1858
11th to 20thDay
6%323424447%61%
1751
21st to endDay
14%6%34423336%54%
1710
December1st to 10thDay
13%5%2342346%7%51%
1710
11th to 20thDay
13%6%36%5%34345%48%
2161
21st to endDay
16%6%24423345%51%
3135
January1st to 10thNight
10%42332345%6%58%
2458
11th to 20thNight
14%413322336%58%
2470
21st to endNight
12%5%2432335%5%55%
2665
February1st to 10thNight
14%6%24323335%54%
2200
11th to 20thNight
13%6%25%423346%51%
2098
21st to endNight
17%5%23323445%53%
1776
March1st to 10thNight
13%6%35%43336%7%47%
1980
11th to 20thNight
13%5%2432445%6%51%
1980
21st to endNight
8%5%24424447%56%
2178
April1st to 10thNight
8%435%32335%8%56%
1980
11th to 20thNight
12%424424446%54%
1895
21st to endNight
10%42342335%7%57%
1630
May1st to 10thNight
9%43443345%9%53%
1620
11th to 20thNight
10%43443346%9%50%
1593
21st to endNight
8%32343447%11%51%
1745
June1st to 10thNight
32134245%6%10%59%
1620
11th to 20thNight
221232346%8%66%
1620
21st to endNight
3223435%47%10%59%
1620
July1st to 10thNight
33243245%7%13%54%
1620
11th to 20thNight
311132335%9%70%
1620
21st to endNight
21123345%7%11%62%
1772
August1st to 10thNight
211111235%10%73%
1611
11th to 20thNight
5%41442345%11%57%
1600
21st to endNight
43134245%6%10%58%
2072
September1st to 10thNight
7%4234335%6%8%56%
1980
11th to 20thNight
11%5%3442345%8%52%
1980
21st to endNight
6%21332445%9%61%
1980
October1st to 10thNight
5%213423347%65%
1980
11th to 20thNight
10%413223236%64%
2158
21st to endNight
14%41331223462%
2376
November1st to 10thNight
9%42442333462%
2220
11th to 20thNight
5%42332345%7%61%
2426
21st to endNight
14%5%24423345%54%
2470
December1st to 10thNight
11%6%24323446%56%
2470
11th to 20thNight
11%5%35%433446%52%
3036
21st to endNight
14%6%24323335%56%
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
30%38%20%30%9%
1708
11th to 20thDay
33%37%24%26%8%
1710
21st to endDay
32%46%17%29%12%
1836
February1st to 10thDay
38%47%18%21%12%
1775
11th to 20thDay
40%46%18%20%10%
1759
21st to endDay
38%3416%23%16%
1480
March1st to 10thDay
39%5%7%16%22%12%
1978
11th to 20thDay
38%6%8%16%23%8%
1980
21st to endDay
34%6%10%21%20%9%
2178
April1st to 10thDay
34%6%11%19%19%11%
1980
11th to 20thDay
35%5%10%19%20%10%
2012
21st to endDay
34%6%9%20%25%6%
2326
May1st to 10thDay
35%6%11%21%19%8%
2340
11th to 20thDay
38%7%13%20%19%3
2306
21st to endDay
39%8%14%22%15%2
2531
June1st to 10thDay
25%9%16%29%17%4
2340
11th to 20thDay
26%6%13%29%19%6%
2340
21st to endDay
26%7%13%24%24%5%
2340
July1st to 10thDay
32%8%19%25%14%2
2276
11th to 20thDay
18%7%15%32%22%5%
2271
21st to endDay
21%10%18%34%17%1
2405
August1st to 10thDay
15%6%16%32%27%3
2314
11th to 20thDay
29%8%15%26%19%2
2301
21st to endDay
25%7%15%29%19%4
2278
September1st to 10thDay
31%6%9%21%25%9%
1980
11th to 20thDay
36%7%11%18%20%7%
1980
21st to endDay
24%6%9%22%26%13%
1980
October1st to 10thDay
21%7%11%23%21%17%
1962
11th to 20thDay
27%38%15%26%20%
1800
21st to endDay
29%37%18%25%18%
1980
November1st to 10thDay
31%49%21%25%11%
1858
11th to 20thDay
25%49%22%28%12%
1751
21st to endDay
35%3421%24%12%
1710
December1st to 10thDay
34%410%21%24%8%
1710
11th to 20thDay
39%47%14%25%10%
2159
21st to endDay
36%45%22%23%10%
3135
January1st to 10thNight
28%47%19%28%14%
2458
11th to 20thNight
31%38%19%28%11%
2470
21st to endNight
32%36%16%26%17%
2665
February1st to 10thNight
35%38%16%21%16%
2200
11th to 20thNight
36%38%16%26%11%
2098
21st to endNight
36%38%15%19%19%
1776
March1st to 10thNight
37%5%8%16%21%14%
1980
11th to 20thNight
34%6%11%14%26%10%
1980
21st to endNight
30%6%11%21%25%8%
2178
April1st to 10thNight
28%5%10%23%20%15%
1980
11th to 20thNight
32%5%10%18%19%15%
1895
21st to endNight
28%6%11%21%29%6%
1630
May1st to 10thNight
30%6%12%23%20%9%
1620
11th to 20thNight
30%6%17%24%19%3
1594
21st to endNight
28%8%17%27%18%3
1746
June1st to 10thNight
21%7%14%32%20%6%
1620
11th to 20thNight
16%6%14%34%22%7%
1620
21st to endNight
21%8%12%26%27%7%
1620
July1st to 10thNight
21%8%18%35%15%3
1575
11th to 20thNight
13%412%37%27%7%
1566
21st to endNight
15%6%20%35%21%2
1673
August1st to 10thNight
9%314%39%30%5%
1601
11th to 20thNight
22%6%14%31%22%5%
1600
21st to endNight
21%7%13%33%22%4
2072
September1st to 10thNight
25%7%11%22%25%10%
1980
11th to 20thNight
31%6%14%18%21%11%
1980
21st to endNight
20%5%10%21%27%16%
1980
October1st to 10thNight
20%410%27%20%19%
1980
11th to 20thNight
25%39%16%24%23%
2158
21st to endNight
28%35%16%27%21%
2376
November1st to 10thNight
28%5%6%20%27%15%
2220
11th to 20thNight
23%5%8%21%28%15%
2426
21st to endNight
34%47%16%27%13%
2470
December1st to 10thNight
30%48%22%23%13%
2470
11th to 20thNight
34%46%15%28%13%
3037
21st to endNight
33%36%17%26%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
16%19%36%24%5%
270
11th to 20thDay
17%19%40%18%5%1
270
21st to endDay
17%21%39%16%7%
282
February1st to 10thDay
19%19%38%21%3
240
11th to 20thDay
23%20%41%14%2
240
21st to endDay
27%23%36%12%3
198
March1st to 10thDay
22%23%32%20%3
240
11th to 20thDay
19%23%33%20%42
240
21st to endDay
13%19%48%15%5%
264
April1st to 10thDay
15%22%37%19%7%
240
11th to 20thDay
18%17%38%22%5%
290
21st to endDay
15%16%38%22%7%2
586
May1st to 10thDay
13%13%38%30%5%1
603
11th to 20thDay
16%7%31%30%12%3
625
21st to endDay
12%7%31%30%17%3
679
June1st to 10thDay
4219%40%27%8%
630
11th to 20thDay
5%122%44%21%6%
630
21st to endDay
3314%40%30%9%
630
July1st to 10thDay
6%110%38%33%12%
621
11th to 20thDay
27%36%44%11%
618
21st to endDay
25%33%46%13%
684
August1st to 10thDay
26%37%44%11%
626
11th to 20thDay
8%26%32%43%9%
615
21st to endDay
5%18%27%34%26%
397
September1st to 10thDay
6%16%25%44%19%
270
11th to 20thDay
6%11%27%39%16%
270
21st to endDay
10%38%35%30%15%
270
October1st to 10thDay
1323%37%31%6%
270
11th to 20thDay
9%7%33%32%16%3
270
21st to endDay
24%10%28%22%14%2
297
November1st to 10thDay
18%9%34%25%10%4
270
11th to 20thDay
10%12%34%31%10%3
270
21st to endDay
17%21%32%22%6%2
270
December1st to 10thDay
16%13%36%23%10%1
270
11th to 20thDay
17%14%36%25%7%
270
21st to endDay
20%14%40%19%6%
297
January1st to 10thNight
13%11%38%31%7%
950
11th to 20thNight
18%14%33%30%6%
950
21st to endNight
15%14%35%30%6%
1025
February1st to 10thNight
18%12%40%26%41
760
11th to 20thNight
16%13%43%25%2
704
21st to endNight
20%16%43%20%2
592
March1st to 10thNight
16%15%39%25%5%
540
11th to 20thNight
15%11%42%27%5%
540
21st to endNight
11%16%39%29%4
594
April1st to 10thNight
9%15%47%24%5%
540
11th to 20thNight
14%13%43%26%4
533
21st to endNight
12%11%44%26%7%
540
May1st to 10thNight
9%11%43%31%41
540
11th to 20thNight
10%7%36%32%13%2
531
21st to endNight
7%5%34%38%15%1
584
June1st to 10thNight
4221%47%24%2
540
11th to 20thNight
4226%54%14%1
540
21st to endNight
320%46%28%3
540
July1st to 10thNight
3115%44%32%4
525
11th to 20thNight
311%54%30%2
522
21st to endNight
26%57%32%3
591
August1st to 10thNight
29%53%34%2
537
11th to 20thNight
6%9%46%35%4
534
21st to endNight
417%43%39%7%
594
September1st to 10thNight
8%111%45%32%3
540
11th to 20thNight
12%19%41%34%3
540
21st to endNight
7%215%43%29%4
540
October1st to 10thNight
7%124%42%23%3
540
11th to 20thNight
11%5%28%38%16%2
718
21st to endNight
17%7%31%31%13%1
792
November1st to 10thNight
10%433%38%14%1
740
11th to 20thNight
7%10%36%34%13%
906
21st to endNight
17%11%37%25%9%1
950
December1st to 10thNight
14%10%36%32%7%
950
11th to 20thNight
18%9%35%32%6%
950
21st to endNight
16%11%37%30%6%
1045
Page generated at 2024-01-24 08:37:29. Version ac07

Copyright 2024 Attilla Danko


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