New Carlisle
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the New Carlisle clear sky chart from 2005-11-05 to 2017-10-31.

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
36%
16110
14%
47340
10%
16068
41%
16068
20%
33679

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
15%
900
8%
2506
3%
895
20%
895
11%
2051
January16th to endNight
16%
960
7%
2688
3%
960
20%
960
11%
2223
February1st to 15thNight
20%
725
9%
2160
4%
725
25%
725
12%
1694
February16th to endNight
21%
631
12%
1893
5%
631
28%
631
12%
1472
March1st to 15thNight
27%
720
12%
2160
8%
720
30%
720
16%
1580
March16th to endNight
33%
693
16%
2037
10%
693
40%
693
19%
1456
April1st to 15thNight
30%
539
13%
1797
9%
539
37%
539
19%
1258
April16th to endNight
33%
540
19%
1684
11%
540
41%
540
22%
1126
May1st to 15thNight
37%
540
14%
1620
7%
540
42%
540
20%
1154
May16th to endNight
52%
562
16%
1554
11%
561
55%
561
29%
1007
June1st to 15thNight
53%
540
16%
1440
11%
540
57%
540
36%
896
June16th to endNight
53%
540
14%
1440
9%
540
57%
540
31%
939
July1st to 15thNight
65%
510
17%
1360
14%
510
66%
510
39%
820
July16th to endNight
71%
564
20%
1417
16%
531
72%
531
39%
842
August1st to 15thNight
71%
539
21%
1590
19%
536
73%
536
37%
911
August16th to endNight
65%
573
20%
1890
20%
573
68%
573
31%
1099
September1st to 15thNight
61%
588
24%
1848
23%
588
64%
588
32%
1096
September16th to endNight
59%
717
26%
1980
20%
717
62%
717
34%
1213
October1st to 15thNight
46%
720
23%
2001
17%
720
50%
720
29%
1301
October16th to endNight
26%
768
15%
2490
9%
768
34%
768
16%
1744
November1st to 15thNight
33%
700
19%
2276
15%
700
39%
700
20%
1539
November16th to endNight
24%
720
11%
2340
9%
720
29%
720
11%
1827
December1st to 15thNight
14%
861
6%
2481
3%
861
17%
861
9%
2082
December16th to endNight
15%
960
5%
2688
2%
960
18%
960
7%
2349

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
13%8%46%5%3445%7%34%
48415
Night
15%9%46%5%34446%34%
47508
Cloud CoverDay
13%8%36%5%3445%7%34%
48424
Night
15%9%46%5%34446%34%
47513
TransparencyDay
48%6%12%19%11%1
48101
Night
49%6%11%18%11%1
47340
SeeingDay
16%9%26%25%15%6%
6100
Night
19%9%27%29%12%1
16114

By Month

Percentage Cloud Cover NE (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%16%6%11%7%45%345%17%
1432
16th to endDay
12%17%10%11%9%5%5%33415%
1536
February1st to 15thDay
14%16%7%10%7%5%5%43420%
1699
16th to endDay
14%12%7%11%6%445%6%5%21%
1580
March1st to 15thDay
18%10%5%7%6%345%46%26%
1790
16th to endDay
17%10%35%5%35%446%32%
2196
April1st to 15thDay
19%11%34424446%33%
2151
16th to endDay
18%7%3442345%7%37%
2274
May1st to 15thDay
19%8%35%5%2445%6%33%
2331
16th to endDay
11%5%35%5%35%45%7%41%
2559
June1st to 15thDay
10%5%25%5%3445%7%43%
2520
16th to endDay
8%425%5%35%6%6%9%41%
2520
July1st to 15thDay
7%5%25%5%35%5%5%8%45%
2520
16th to endDay
6%3245%36%5%7%10%44%
2655
August1st to 15thDay
6%425%5%35%5%6%9%44%
2361
16th to endDay
10%5%25%5%3446%9%43%
2309
September1st to 15thDay
12%425%435%46%7%42%
2098
16th to endDay
10%5%345%35%5%6%8%42%
1980
October1st to 15thDay
16%6%26%5%2445%7%39%
1958
16th to endDay
20%8%36%5%3445%7%30%
1731
November1st to 15thDay
16%8%35%5%245%45%36%
1582
16th to endDay
18%16%5%7%5%34445%23%
1620
December1st to 15thDay
18%16%8%11%6%43435%17%
1477
16th to endDay
21%18%7%10%6%3444316%
1536
January1st to 15thNight
19%15%6%8%6%24445%20%
2506
16th to endNight
14%14%8%9%9%45%44419%
2688
February1st to 15thNight
16%12%6%8%6%35%445%24%
2158
16th to endNight
16%14%6%7%6%35%336%25%
1893
March1st to 15thNight
17%10%5%7%5%24435%32%
2147
16th to endNight
17%8%36%5%35%45%6%34%
2037
April1st to 15thNight
18%8%35%5%35%45%6%33%
1797
16th to endNight
18%7%25%434445%39%
1684
May1st to 15thNight
19%6%36%5%35%45%6%34%
1620
16th to endNight
12%435%43445%7%43%
1552
June1st to 15thNight
9%5%344235%5%9%47%
1440
16th to endNight
7%436%5%345%8%8%42%
1440
July1st to 15thNight
6%2144245%7%9%51%
1440
16th to endNight
7%2233345%6%10%49%
1513
August1st to 15thNight
43145%345%6%9%51%
1599
16th to endNight
9%41443435%7%50%
1890
September1st to 15thNight
13%424323347%49%
1848
16th to endNight
12%424323447%48%
1980
October1st to 15thNight
16%5%25%413346%44%
2001
16th to endNight
22%8%35%43334435%
2490
November1st to 15thNight
15%12%45%5%14335%38%
2276
16th to endNight
20%13%5%8%6%24436%23%
2340
December1st to 15thNight
19%17%8%9%6%34345%17%
2481
16th to endNight
22%17%6%9%7%35%445%14%
2688

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
18%16%5%11%8%44335%17%
1432
16th to endDay
12%18%9%11%8%5%6%34415%
1536
February1st to 15thDay
13%16%7%10%6%5%5%335%20%
1699
16th to endDay
14%11%7%10%7%45%46%5%21%
1580
March1st to 15thDay
18%11%48%6%3445%7%26%
1800
16th to endDay
18%10%35%6%35%45%6%32%
2195
April1st to 15thDay
19%11%34424446%33%
2151
16th to endDay
17%8%3442445%8%37%
2274
May1st to 15thDay
19%8%36%42445%7%33%
2331
16th to endDay
11%5%46%5%35%46%7%40%
2559
June1st to 15thDay
10%425%6%35%45%7%44%
2520
16th to endDay
8%425%5%35%6%6%9%41%
2520
July1st to 15thDay
7%425%5%346%5%9%45%
2520
16th to endDay
6%3145%36%6%7%9%44%
2655
August1st to 15thDay
6%4245%45%6%6%10%44%
2361
16th to endDay
10%5%25%5%35%46%8%42%
2309
September1st to 15thDay
12%4245%35%45%7%43%
2098
16th to endDay
9%5%35%5%345%5%8%42%
1980
October1st to 15thDay
16%6%26%5%245%47%39%
1958
16th to endDay
20%8%26%6%3436%6%30%
1731
November1st to 15thDay
16%9%35%5%2445%5%36%
1582
16th to endDay
18%15%5%7%5%34445%23%
1620
December1st to 15thDay
18%16%8%11%6%43335%18%
1477
16th to endDay
21%18%6%10%6%35%33415%
1536
January1st to 15thNight
20%14%6%8%7%3445%5%20%
2506
16th to endNight
14%14%8%10%9%44445%19%
2688
February1st to 15thNight
16%12%6%8%7%3445%5%25%
2151
16th to endNight
16%14%6%8%6%34346%26%
1893
March1st to 15thNight
17%10%48%5%34445%32%
2160
16th to endNight
17%8%27%5%3445%6%34%
2037
April1st to 15thNight
18%7%45%5%345%47%33%
1797
16th to endNight
18%7%25%434445%39%
1684
May1st to 15thNight
18%7%26%5%3445%6%34%
1619
16th to endNight
12%5%35%5%24447%44%
1552
June1st to 15thNight
9%5%25%4235%5%8%47%
1440
16th to endNight
7%426%5%345%8%9%42%
1440
July1st to 15thNight
5%2244345%6%9%52%
1440
16th to endNight
6%2143245%6%11%49%
1513
August1st to 15thNight
43244345%6%9%50%
1599
16th to endNight
10%324434447%50%
1890
September1st to 15thNight
13%32442245%7%49%
1848
16th to endNight
11%415%323447%49%
1980
October1st to 15thNight
17%5%24423346%44%
2001
16th to endNight
22%8%26%43333435%
2490
November1st to 15thNight
16%12%35%423345%38%
2276
16th to endNight
20%14%5%7%6%24346%23%
2340
December1st to 15thNight
20%16%8%8%6%33345%18%
2481
16th to endNight
23%15%6%10%7%34445%14%
2688

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
69%5%12%8%3
1433
16th to endDay
71%6%9%7%4
1536
February1st to 15thDay
66%5%9%12%41
1701
16th to endDay
62%7%12%12%4
1580
March1st to 15thDay
57%6%12%15%6%
1800
16th to endDay
52%5%14%21%5%
2196
April1st to 15thDay
52%5%9%19%13%
2151
16th to endDay
44%7%13%18%11%4
2274
May1st to 15thDay
49%7%12%21%9%
2331
16th to endDay
41%7%12%23%13%2
2563
June1st to 15thDay
37%6%11%23%19%1
2520
16th to endDay
36%9%15%19%17%2
2520
July1st to 15thDay
36%7%12%23%18%2
2371
16th to endDay
32%9%16%23%14%2
2488
August1st to 15thDay
32%8%14%25%16%2
2346
16th to endDay
37%6%13%23%15%3
2309
September1st to 15thDay
38%6%12%21%17%3
2098
16th to endDay
38%6%11%24%16%1
1980
October1st to 15thDay
43%6%11%21%14%1
1958
16th to endDay
51%7%14%17%7%
1731
November1st to 15thDay
47%6%10%19%14%1
1582
16th to endDay
64%5%10%15%3
1620
December1st to 15thDay
70%5%9%12%3
1477
16th to endDay
72%5%11%7%2
1536
January1st to 15thNight
64%7%11%11%5%
2506
16th to endNight
66%6%13%11%2
2688
February1st to 15thNight
59%7%11%14%6%
2160
16th to endNight
59%7%10%17%4
1893
March1st to 15thNight
53%5%12%16%9%1
2160
16th to endNight
50%6%11%21%8%1
2037
April1st to 15thNight
50%6%10%18%14%
1797
16th to endNight
45%5%9%18%15%4
1684
May1st to 15thNight
49%6%10%22%10%
1620
16th to endNight
38%6%14%22%15%2
1554
June1st to 15thNight
32%6%12%27%17%2
1440
16th to endNight
35%8%16%21%15%1
1440
July1st to 15thNight
27%8%15%24%20%3
1360
16th to endNight
27%8%16%23%20%4
1417
August1st to 15thNight
27%8%14%25%22%1
1590
16th to endNight
33%6%11%24%19%4
1890
September1st to 15thNight
34%5%10%24%19%5%
1848
16th to endNight
34%49%26%21%2
1980
October1st to 15thNight
39%5%10%24%17%1
2001
16th to endNight
52%5%12%21%8%1
2490
November1st to 15thNight
48%49%19%14%2
2276
16th to endNight
62%5%10%16%4
2340
December1st to 15thNight
68%6%9%11%3
2481
16th to endNight
72%7%9%7%2
2688

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
27%18%28%15%8%
90
16th to endDay
20%17%36%19%41
96
February1st to 15thDay
20%40%30%6%3
90
16th to endDay
24%9%41%14%8%
81
March1st to 15thDay
33%24%25%10%6%
90
16th to endDay
28%9%29%20%10%1
288
April1st to 15thDay
26%13%29%21%7%1
270
16th to endDay
21%12%30%18%11%6%
270
May1st to 15thDay
26%10%26%21%10%4
288
16th to endDay
15%11%29%23%15%4
459
June1st to 15thDay
11%6%30%30%15%4
495
16th to endDay
11%7%32%28%13%5%
495
July1st to 15thDay
9%428%28%18%10%
475
16th to endDay
7%324%32%21%10%
515
August1st to 15thDay
8%115%28%28%17%
334
16th to endDay
11%5%17%28%25%12%
332
September1st to 15thDay
11%417%29%27%9%
315
16th to endDay
11%8%14%29%26%9%
314
October1st to 15thDay
21%5%26%27%16%3
293
16th to endDay
25%16%34%22%1
144
November1st to 15thDay
6%14%27%32%15%3
90
16th to endDay
37%13%31%15%2
90
December1st to 15thDay
21%31%28%14%4
90
16th to endDay
25%33%37%22
96
January1st to 15thNight
27%15%33%19%4
900
16th to endNight
19%14%37%24%3
960
February1st to 15thNight
22%12%37%23%4
728
16th to endNight
22%14%34%22%6%
631
March1st to 15thNight
22%12%31%24%7%
720
16th to endNight
20%9%30%33%5%
693
April1st to 15thNight
23%9%32%26%7%
539
16th to endNight
20%7%34%25%10%1
540
May1st to 15thNight
22%428%31%11%
540
16th to endNight
14%420%41%18%
563
June1st to 15thNight
10%326%44%15%
540
16th to endNight
9%126%39%22%
540
July1st to 15thNight
8%18%44%25%2
510
16th to endNight
7%214%41%30%3
564
August1st to 15thNight
5%10%48%29%4
539
16th to endNight
10%212%38%31%4
573
September1st to 15thNight
14%313%36%27%5%
588
16th to endNight
14%5%16%31%29%4
717
October1st to 15thNight
19%5%24%31%17%1
720
16th to endNight
26%13%29%23%7%
768
November1st to 15thNight
21%12%29%26%10%1
700
16th to endNight
28%16%25%22%6%
720
December1st to 15thNight
26%16%35%18%3
861
16th to endNight
29%14%33%19%2
960
Page generated at 2017-11-01 17:23:42. Version ac04

Copyright 2017 A. Danko


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