Batesville
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Batesville clear sky chart from 2005-11-05 to 2017-12-04.

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
45%
16008
26%
47878
17%
15961
54%
15961
32%
28046

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 15thNight
24%
900
28%
2327
9%
895
38%
895
27%
1487
January16th to endNight
24%
960
27%
2496
8%
960
37%
960
30%
1569
February1st to 15thNight
25%
839
21%
2242
7%
835
34%
835
27%
1439
February16th to endNight
23%
631
27%
1893
9%
631
37%
631
27%
1100
March1st to 15thNight
28%
573
21%
2013
12%
573
37%
573
22%
1256
March16th to endNight
34%
576
19%
2082
15%
576
43%
576
22%
1273
April1st to 15thNight
32%
539
25%
1797
12%
539
49%
539
30%
1000
April16th to endNight
38%
540
24%
1800
17%
540
53%
540
29%
1053
May1st to 15thNight
43%
539
18%
1776
13%
539
53%
539
27%
1068
May16th to endNight
52%
563
23%
1559
17%
561
59%
561
35%
963
June1st to 15thNight
72%
540
27%
1440
20%
540
77%
540
51%
781
June16th to endNight
72%
540
28%
1440
23%
540
76%
540
47%
803
July1st to 15thNight
75%
510
20%
1459
19%
510
78%
510
39%
847
July16th to endNight
82%
564
24%
1594
25%
531
83%
531
46%
835
August1st to 15thNight
77%
539
24%
1679
27%
536
79%
536
42%
894
August16th to endNight
75%
573
25%
1910
30%
573
77%
573
35%
1047
September1st to 15thNight
66%
540
28%
1800
29%
540
70%
540
34%
1017
September16th to endNight
64%
624
32%
1947
27%
624
68%
624
37%
1069
October1st to 15thNight
55%
720
31%
2160
24%
720
61%
720
39%
1184
October16th to endNight
49%
768
36%
2304
23%
768
62%
768
41%
1228
November1st to 15thNight
44%
760
31%
2355
21%
760
55%
760
35%
1293
November16th to endNight
37%
790
29%
2545
18%
790
51%
790
30%
1458
December1st to 15thNight
34%
920
21%
2575
11%
920
43%
920
28%
1635
December16th to endNight
27%
960
23%
2685
8%
960
39%
960
25%
1747

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%5%2442445%7%44%
48597
Night
11%424424347%50%
48079
TransparencyDay
37%411%25%17%3
48297
Night
34%310%25%21%5%
47884
SeeingDay
11%6%21%26%23%9%
5985
Night
14%9%25%29%18%2
16009

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 15thDay
17%5%1341333450%
1611
16th to endDay
12%7%34413235%49%
1728
February1st to 15thDay
14%5%25%5%2433447%
1615
16th to endDay
13%7%36%6%2435%6%40%
1580
March1st to 15thDay
18%6%24424445%42%
1958
16th to endDay
17%6%35%5%245%46%39%
2140
April1st to 15thDay
12%5%26%42335%7%45%
2151
16th to endDay
16%7%25%5%2446%6%38%
2160
May1st to 15thDay
14%7%35%6%35%45%7%37%
2172
16th to endDay
9%5%25%6%46%6%6%8%36%
2552
June1st to 15thDay
6%3245%36%6%7%9%45%
2520
16th to endDay
4224435%6%6%11%45%
2520
July1st to 15thDay
7%5%26%6%48%5%7%9%36%
2408
16th to endDay
5%3145%36%6%8%10%45%
2466
August1st to 15thDay
8%4245%35%5%7%9%43%
2270
16th to endDay
9%5%235%35%5%7%10%41%
2292
September1st to 15thDay
11%5%244346%5%7%45%
2160
16th to endDay
12%314324447%50%
1997
October1st to 15thDay
11%5%24433346%50%
1800
16th to endDay
14%312222335%58%
1920
November1st to 15thDay
12%5%34322247%52%
1832
16th to endDay
16%6%24413335%49%
1742
December1st to 15thDay
17%6%14323345%44%
1467
16th to endDay
17%6%35%324335%43%
1536
January1st to 15thNight
16%6%3432323351%
2327
16th to endNight
14%5%2432323451%
2496
February1st to 15thNight
15%6%25%423325%47%
2238
16th to endNight
13%424423345%51%
1893
March1st to 15thNight
17%6%26%423335%44%
2013
16th to endNight
17%6%25%424345%43%
2082
April1st to 15thNight
9%424424446%52%
1797
16th to endNight
11%424424448%47%
1800
May1st to 15thNight
13%5%24325%45%8%44%
1775
16th to endNight
9%4246%3446%7%46%
1558
June1st to 15thNight
222332445%11%57%
1440
16th to endNight
32125%3446%11%55%
1440
July1st to 15thNight
4214436%5%6%11%47%
1548
16th to endNight
321343446%11%54%
1702
August1st to 15thNight
421442447%10%52%
1689
16th to endNight
4314436%5%7%11%46%
1910
September1st to 15thNight
8%5%14434437%51%
1800
16th to endNight
8%424424436%54%
1947
October1st to 15thNight
11%313323346%56%
2160
16th to endNight
12%21331223462%
2304
November1st to 15thNight
11%413323346%54%
2355
16th to endNight
14%413324346%50%
2545
December1st to 15thNight
18%5%24323345%45%
2575
16th to endNight
18%7%2442323444%
2685

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 15thDay
39%28%27%17%5%
1612
16th to endDay
37%19%27%18%3
1728
February1st to 15thDay
41%210%25%16%2
1617
16th to endDay
43%39%23%16%3
1580
March1st to 15thDay
44%310%20%15%6%
1958
16th to endDay
45%312%24%11%1
2142
April1st to 15thDay
37%49%25%20%3
2151
16th to endDay
43%39%22%17%3
2160
May1st to 15thDay
46%411%18%17%1
2172
16th to endDay
41%6%15%22%11%2
2556
June1st to 15thDay
31%5%14%28%18%1
2520
16th to endDay
28%7%14%29%17%3
2520
July1st to 15thDay
40%6%14%23%13%2
2268
16th to endDay
29%6%15%32%14%2
2311
August1st to 15thDay
33%5%13%28%16%2
2256
16th to endDay
34%5%14%24%16%4
2292
September1st to 15thDay
36%411%22%18%6%
2160
16th to endDay
32%37%24%26%4
1997
October1st to 15thDay
35%37%24%22%6%
1800
16th to endDay
29%2428%27%7%
1920
November1st to 15thDay
34%27%26%22%7%
1832
16th to endDay
38%27%22%23%4
1742
December1st to 15thDay
41%210%24%17%2
1467
16th to endDay
44%310%21%16%3
1536
January1st to 15thNight
39%15%25%24%3
2327
16th to endNight
37%28%27%20%4
2496
February1st to 15thNight
40%19%26%18%4
2247
16th to endNight
35%210%27%17%6%
1893
March1st to 15thNight
44%29%18%19%6%
2013
16th to endNight
43%210%24%17%1
2082
April1st to 15thNight
32%310%25%21%5%
1797
16th to endNight
33%5%10%24%21%3
1800
May1st to 15thNight
37%5%14%21%17%4
1776
16th to endNight
33%5%17%22%16%3
1560
June1st to 15thNight
20%5%14%30%26%2
1440
16th to endNight
23%5%12%29%22%5%
1440
July1st to 15thNight
28%6%16%28%16%3
1459
16th to endNight
22%5%18%32%19%2
1594
August1st to 15thNight
24%6%16%29%21%2
1679
16th to endNight
29%5%14%28%17%4
1910
September1st to 15thNight
33%39%26%17%9%
1800
16th to endNight
30%38%22%26%8%
1947
October1st to 15thNight
29%38%24%25%9%
2160
16th to endNight
27%25%21%33%9%
2304
November1st to 15thNight
30%27%26%23%8%
2355
16th to endNight
34%26%24%24%6%
2545
December1st to 15thNight
40%211%21%17%5%
2575
16th to endNight
43%19%22%19%3
2685

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 15thDay
24%15%37%16%41
90
16th to endDay
17%25%40%13%3
96
February1st to 15thDay
14%21%48%11%22
90
16th to endDay
12%24%40%16%41
81
March1st to 15thDay
28%14%36%16%3
90
16th to endDay
15%23%25%27%7%
126
April1st to 15thDay
11%17%33%22%13%1
270
16th to endDay
21%5%33%21%14%2
270
May1st to 15thDay
12%14%32%24%12%3
309
16th to endDay
12%6%30%28%15%5%
517
June1st to 15thDay
7%218%31%25%14%
495
16th to endDay
5%218%36%27%8%
495
July1st to 15thDay
6%116%35%29%10%
475
16th to endDay
5%15%26%37%23%
515
August1st to 15thDay
12%8%28%35%14%
423
16th to endDay
14%16%28%33%16%
332
September1st to 15thDay
8%311%20%35%19%
315
16th to endDay
11%112%23%31%19%
251
October1st to 15thDay
9%6%22%34%22%4
135
16th to endDay
14%436%26%14%3
144
November1st to 15thDay
17%7%28%22%20%3
135
16th to endDay
27%11%26%20%11%2
135
December1st to 15thDay
19%11%32%22%13%3
100
16th to endDay
23%17%41%15%1
96
January1st to 15thNight
21%18%32%21%5%
900
16th to endNight
18%15%38%25%2
960
February1st to 15thNight
19%17%34%25%3
839
16th to endNight
16%19%36%24%2
631
March1st to 15thNight
21%12%34%29%2
573
16th to endNight
19%11%29%30%8%
576
April1st to 15thNight
11%15%37%24%9%1
539
16th to endNight
14%10%32%31%10%
540
May1st to 15thNight
17%7%28%33%11%1
540
16th to endNight
11%424%34%20%4
563
June1st to 15thNight
5%115%37%35%4
540
16th to endNight
3113%40%36%4
540
July1st to 15thNight
6%28%40%34%7%
510
16th to endNight
45%33%44%11%
564
August1st to 15thNight
418%30%45%8%
539
16th to endNight
5%19%35%41%6%
573
September1st to 15thNight
10%213%25%44%4
540
16th to endNight
9%316%30%35%4
624
October1st to 15thNight
13%5%20%28%29%3
720
16th to endNight
14%7%25%32%19%1
768
November1st to 15thNight
13%10%27%32%15%1
760
16th to endNight
17%11%31%26%13%
790
December1st to 15thNight
21%10%29%29%7%
920
16th to endNight
23%13%31%26%5%
960
Page generated at 2017-12-05 09:19:02. Version ac04

Copyright 2017 A. Danko


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