Kintore
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kintore 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
35%
15233
13%
47542
10%
15195
40%
15195
18%
33722

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
13%
717
8%
2383
4%
716
18%
716
7%
1954
January16th to endNight
15%
768
7%
2496
3%
768
20%
768
7%
2065
February1st to 15thNight
17%
702
6%
2287
2%
701
21%
701
9%
1839
February16th to endNight
23%
631
9%
1961
4%
631
29%
631
11%
1518
March1st to 15thNight
23%
720
13%
2010
7%
720
29%
720
15%
1531
March16th to endNight
32%
768
19%
2112
11%
768
39%
768
22%
1483
April1st to 15thNight
28%
685
15%
1832
8%
685
34%
685
21%
1333
April16th to endNight
38%
540
20%
1620
9%
540
45%
540
25%
1044
May1st to 15thNight
40%
540
16%
1620
10%
540
46%
540
24%
1079
May16th to endNight
46%
414
16%
1537
14%
414
55%
414
26%
885
June1st to 15thNight
49%
360
13%
1398
14%
360
55%
360
24%
805
June16th to endNight
55%
360
16%
1260
15%
360
61%
360
28%
725
July1st to 15thNight
65%
370
19%
1253
23%
370
68%
370
37%
669
July16th to endNight
65%
564
15%
1595
14%
531
67%
531
34%
957
August1st to 15thNight
67%
539
17%
1609
14%
536
69%
536
33%
965
August16th to endNight
63%
586
24%
1732
16%
586
68%
586
36%
1016
September1st to 15thNight
54%
720
21%
1881
13%
720
57%
720
33%
1210
September16th to endNight
57%
717
22%
1980
18%
717
59%
717
32%
1247
October1st to 15thNight
43%
720
16%
2142
15%
720
47%
720
24%
1438
October16th to endNight
24%
768
13%
2319
8%
768
31%
768
15%
1728
November1st to 15thNight
35%
760
17%
2523
16%
760
39%
760
19%
1711
November16th to endNight
21%
780
9%
2730
6%
780
26%
780
11%
2068
December1st to 15thNight
13%
736
4%
2574
2%
736
16%
736
6%
2146
December16th to endNight
11%
768
5%
2688
1%
768
16%
768
5%
2306

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
15%9%47%6%35%45%7%30%
48936
Night
15%9%47%6%3445%6%32%
47720
Cloud CoverDay
15%9%47%6%35%45%7%30%
48946
Night
15%9%47%5%3445%6%32%
47724
TransparencyDay
52%6%12%18%9%
48632
Night
50%6%12%19%9%1
47542
SeeingDay
19%7%26%24%15%6%
5895
Night
19%9%28%28%12%1
15239

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
19%16%6%10%8%44445%14%
1552
16th to endDay
14%17%9%12%10%46%33413%
1728
February1st to 15thDay
15%17%7%11%8%46%44415%
1575
16th to endDay
16%13%7%9%8%35%45%5%18%
1509
March1st to 15thDay
16%14%6%9%6%44445%24%
1939
16th to endDay
17%9%6%7%5%345%5%5%29%
2112
April1st to 15thDay
19%11%46%5%245%47%27%
2125
16th to endDay
17%9%35%433247%37%
2340
May1st to 15thDay
19%6%26%43436%8%33%
2331
16th to endDay
13%5%36%5%345%5%8%39%
2577
June1st to 15thDay
12%5%36%5%345%5%9%37%
2556
16th to endDay
13%425%436%5%6%9%37%
2700
July1st to 15thDay
10%425%5%35%5%6%9%41%
2627
16th to endDay
10%5%26%5%45%5%6%9%37%
2465
August1st to 15thDay
8%5%26%7%47%6%6%9%35%
2340
16th to endDay
13%5%25%5%45%5%7%7%37%
2457
September1st to 15thDay
13%6%36%5%35%45%8%36%
2076
16th to endDay
16%5%15%425%45%8%40%
1980
October1st to 15thDay
20%7%36%34435%7%32%
1818
16th to endDay
26%11%46%6%25%45%422%
1902
November1st to 15thDay
16%10%36%5%2436%6%31%
1663
16th to endDay
19%15%5%9%435%45%6%19%
1560
December1st to 15thDay
17%18%9%11%7%3444415%
1468
16th to endDay
21%19%9%12%7%443439%
1536
January1st to 15thNight
20%13%7%9%8%35%44416%
2383
16th to endNight
15%14%9%11%9%35%445%15%
2496
February1st to 15thNight
15%14%7%10%8%45%445%19%
2285
16th to endNight
16%10%5%11%7%35%45%6%22%
1961
March1st to 15thNight
17%9%48%6%35%45%6%27%
1998
16th to endNight
15%9%46%5%24345%37%
2112
April1st to 15thNight
19%10%45%5%2335%7%32%
1832
16th to endNight
12%7%35%5%2445%7%40%
1620
May1st to 15thNight
15%6%26%5%345%5%9%36%
1620
16th to endNight
10%5%234345%5%6%46%
1535
June1st to 15thNight
11%5%15%4245%7%8%42%
1398
16th to endNight
9%4145%35%5%6%8%44%
1260
July1st to 15thNight
5%32343335%9%55%
1328
16th to endNight
7%314435%5%6%10%47%
1703
August1st to 15thNight
6%4145%246%8%8%47%
1620
16th to endNight
8%3235%35%346%52%
1732
September1st to 15thNight
12%5%24424447%47%
1881
16th to endNight
11%5%245%2346%7%46%
1980
October1st to 15thNight
18%6%25%42435%7%38%
2142
16th to endNight
23%9%36%5%2445%6%27%
2319
November1st to 15thNight
15%8%36%5%2446%7%33%
2523
16th to endNight
21%13%5%7%5%2435%7%23%
2730
December1st to 15thNight
19%17%8%9%6%34445%15%
2574
16th to endNight
20%14%8%12%7%3444412%
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
19%16%6%10%8%5%35%35%14%
1552
16th to endDay
13%17%9%13%8%45%43414%
1728
February1st to 15thDay
15%17%7%10%8%46%445%16%
1575
16th to endDay
17%12%7%10%8%45%5%5%5%18%
1509
March1st to 15thDay
17%13%5%9%6%35%446%23%
1950
16th to endDay
16%9%6%7%6%2445%6%30%
2111
April1st to 15thDay
19%11%46%5%24447%28%
2125
16th to endDay
18%9%35%423347%37%
2340
May1st to 15thDay
19%6%25%5%3435%8%34%
2331
16th to endDay
13%5%35%5%3445%7%39%
2577
June1st to 15thDay
12%6%25%43446%9%38%
2556
16th to endDay
13%425%436%5%6%10%36%
2700
July1st to 15thDay
11%325%5%35%5%6%9%41%
2627
16th to endDay
10%5%25%6%36%5%6%9%37%
2465
August1st to 15thDay
9%426%7%46%7%6%8%36%
2340
16th to endDay
13%425%5%445%6%9%37%
2457
September1st to 15thDay
13%6%36%5%3445%7%36%
2076
16th to endDay
16%6%1443445%7%40%
1980
October1st to 15thDay
20%7%26%5%35%35%6%33%
1818
16th to endDay
25%10%37%6%35%45%5%22%
1902
November1st to 15thDay
16%11%36%5%25%35%7%32%
1663
16th to endDay
19%15%5%8%6%3445%6%20%
1560
December1st to 15thDay
17%17%9%10%7%35%44415%
1468
16th to endDay
21%19%8%10%9%343349%
1536
January1st to 15thNight
20%14%7%9%7%35%34417%
2383
16th to endNight
15%14%9%11%8%45%45%415%
2496
February1st to 15thNight
14%14%7%9%8%45%5%45%19%
2278
16th to endNight
16%10%5%10%7%35%45%6%23%
1961
March1st to 15thNight
17%10%5%7%6%4445%6%27%
2010
16th to endNight
15%9%46%5%24345%37%
2112
April1st to 15thNight
20%9%36%42335%6%33%
1832
16th to endNight
12%7%25%5%25%5%5%7%40%
1620
May1st to 15thNight
15%6%26%5%3445%8%36%
1619
16th to endNight
10%5%244245%5%7%46%
1535
June1st to 15thNight
11%425%4245%7%8%42%
1398
16th to endNight
9%3245%26%47%9%44%
1260
July1st to 15thNight
5%31442435%9%55%
1328
16th to endNight
7%314435%5%6%10%47%
1703
August1st to 15thNight
6%314425%6%7%9%47%
1620
16th to endNight
8%424434446%52%
1732
September1st to 15thNight
11%5%24425%346%47%
1881
16th to endNight
12%42442346%7%46%
1980
October1st to 15thNight
18%6%25%42435%7%39%
2142
16th to endNight
22%8%37%5%3445%6%28%
2319
November1st to 15thNight
15%8%36%5%3346%7%34%
2523
16th to endNight
21%13%5%7%5%2435%7%23%
2730
December1st to 15thNight
19%17%7%9%6%34445%16%
2574
16th to endNight
20%15%8%11%7%3444413%
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
72%5%9%8%3
1553
16th to endDay
73%5%8%8%3
1728
February1st to 15thDay
70%5%9%10%3
1577
16th to endDay
66%6%10%11%4
1509
March1st to 15thDay
62%5%11%13%6%
1950
16th to endDay
54%6%11%16%9%
2112
April1st to 15thDay
55%6%10%19%8%
2125
16th to endDay
47%411%19%13%1
2340
May1st to 15thDay
47%6%13%21%10%
2331
16th to endDay
42%7%13%22%12%1
2581
June1st to 15thDay
41%7%14%23%12%1
2556
16th to endDay
41%9%13%22%13%
2700
July1st to 15thDay
37%7%11%25%15%1
2473
16th to endDay
42%7%14%21%12%2
2310
August1st to 15thDay
41%9%15%20%11%1
2327
16th to endDay
41%7%14%22%12%1
2457
September1st to 15thDay
44%6%15%21%11%
2076
16th to endDay
40%7%14%26%10%
1980
October1st to 15thDay
51%6%12%16%12%
1818
16th to endDay
62%7%13%12%4
1902
November1st to 15thDay
51%6%13%18%8%1
1663
16th to endDay
64%6%14%11%2
1560
December1st to 15thDay
70%7%12%7%1
1468
16th to endDay
78%47%7%1
1536
January1st to 15thNight
69%5%9%10%4
2383
16th to endNight
69%5%11%10%2
2496
February1st to 15thNight
65%6%11%12%3
2287
16th to endNight
60%6%13%13%5%
1961
March1st to 15thNight
57%5%11%18%6%
2010
16th to endNight
48%5%10%21%12%2
2112
April1st to 15thNight
51%49%21%12%1
1832
16th to endNight
42%411%20%18%3
1620
May1st to 15thNight
44%5%11%23%12%2
1620
16th to endNight
35%6%14%25%14%3
1537
June1st to 15thNight
36%6%14%25%14%1
1398
16th to endNight
34%6%15%25%17%1
1260
July1st to 15thNight
27%6%11%29%22%3
1253
16th to endNight
30%8%15%23%17%2
1595
August1st to 15thNight
28%11%15%28%13%1
1609
16th to endNight
31%6%12%31%16%2
1732
September1st to 15thNight
36%6%13%26%15%1
1881
16th to endNight
35%6%13%29%14%
1980
October1st to 15thNight
44%6%11%21%15%
2142
16th to endNight
55%5%14%16%7%
2319
November1st to 15thNight
47%6%14%20%10%1
2523
16th to endNight
60%5%16%14%3
2730
December1st to 15thNight
70%6%12%7%2
2574
16th to endNight
73%6%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
21%20%40%12%5%1
80
16th to endDay
36%13%34%15%
96
February1st to 15thDay
24%15%50%10%
90
16th to endDay
22%17%49%8%2
81
March1st to 15thDay
26%10%35%20%7%
240
16th to endDay
26%8%32%20%8%2
288
April1st to 15thDay
26%12%28%20%10%1
270
16th to endDay
22%10%28%21%10%7%
270
May1st to 15thDay
21%8%28%25%11%4
288
16th to endDay
15%6%29%26%14%6%
331
June1st to 15thDay
14%5%25%32%17%3
351
16th to endDay
13%6%31%31%13%4
495
July1st to 15thDay
13%425%28%20%8%
439
16th to endDay
11%219%28%26%10%
326
August1st to 15thDay
11%17%30%25%14%
313
16th to endDay
13%415%21%24%19%
332
September1st to 15thDay
12%416%23%30%13%
315
16th to endDay
17%5%16%21%22%16%
314
October1st to 15thDay
23%7%21%26%16%5%
315
16th to endDay
27%9%33%22%6%
318
November1st to 15thDay
23%11%34%16%9%4
122
16th to endDay
27%15%36%12%7%
90
December1st to 15thDay
25%26%26%14%5%
67
16th to endDay
29%25%39%6%
64
January1st to 15thNight
25%15%36%16%4
720
16th to endNight
21%12%36%23%5%
768
February1st to 15thNight
23%14%36%21%4
704
16th to endNight
22%12%32%26%5%
631
March1st to 15thNight
23%12%34%22%7%
720
16th to endNight
19%9%31%27%10%1
768
April1st to 15thNight
23%11%30%27%5%
685
16th to endNight
16%7%32%32%9%1
540
May1st to 15thNight
18%5%27%33%14%1
540
16th to endNight
13%430%33%16%1
415
June1st to 15thNight
12%130%41%13%
360
16th to endNight
11%423%45%13%
360
July1st to 15thNight
6%120%48%20%2
370
16th to endNight
9%115%47%24%1
564
August1st to 15thNight
9%114%41%29%3
539
16th to endNight
9%118%38%27%5%
586
September1st to 15thNight
14%420%31%22%6%
720
16th to endNight
15%316%32%26%6%
717
October1st to 15thNight
21%5%23%30%16%2
720
16th to endNight
28%10%32%22%6%
768
November1st to 15thNight
19%10%29%28%10%1
760
16th to endNight
27%13%30%20%7%
780
December1st to 15thNight
27%16%33%18%3
736
16th to endNight
26%14%37%17%3
768
Page generated at 2017-12-05 10:19:04. Version ac04

Copyright 2017 A. Danko


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