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 2017-04-01.

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
34%
14446
13%
45104
9%
14408
39%
14408
18%
32167

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
14%
768
7%
2496
3%
768
19%
768
7%
2065
February1st to 15thNight
17%
702
6%
2287
2%
701
21%
701
9%
1839
February16th to endNight
22%
631
9%
1961
4%
631
29%
631
11%
1518
March1st to 15thNight
24%
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%
632
16%
1690
8%
632
34%
632
21%
1227
April16th to endNight
39%
495
19%
1485
9%
495
46%
495
25%
956
May1st to 15thNight
41%
495
17%
1485
10%
495
48%
495
24%
987
May16th to endNight
48%
379
16%
1406
14%
379
56%
379
26%
806
June1st to 15thNight
48%
330
14%
1282
15%
330
55%
330
24%
745
June16th to endNight
55%
330
15%
1155
15%
330
60%
330
28%
662
July1st to 15thNight
65%
337
20%
1142
24%
337
69%
337
38%
607
July16th to endNight
65%
522
13%
1469
12%
489
67%
489
33%
887
August1st to 15thNight
66%
494
17%
1474
14%
491
68%
491
33%
888
August16th to endNight
64%
537
22%
1587
16%
537
68%
537
35%
937
September1st to 15thNight
54%
660
21%
1724
13%
660
57%
660
32%
1121
September16th to endNight
56%
657
19%
1815
15%
657
58%
657
31%
1154
October1st to 15thNight
43%
660
17%
1963
15%
660
47%
660
24%
1318
October16th to endNight
23%
704
12%
2126
7%
704
30%
704
15%
1600
November1st to 15thNight
35%
700
18%
2324
17%
700
39%
700
20%
1550
November16th to endNight
22%
720
9%
2520
7%
720
26%
720
11%
1925
December1st to 15thNight
13%
720
4%
2520
2%
720
16%
720
6%
2101
December16th to endNight
12%
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%29%
45986
Night
15%9%47%6%3445%6%32%
45282
Cloud CoverDay
16%9%47%6%35%45%7%30%
45996
Night
15%9%47%5%3445%6%32%
45286
TransparencyDay
52%6%12%17%9%
45682
Night
51%6%12%18%9%1
45104
SeeingDay
18%7%26%24%15%6%
4943
Night
19%9%28%28%11%1
14452

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%
1952
16th to endDay
17%10%35%423347%37%
2145
May1st to 15thDay
17%7%26%43436%8%33%
2136
16th to endDay
13%5%36%5%245%5%8%40%
2356
June1st to 15thDay
13%6%36%5%345%5%10%35%
2343
16th to endDay
12%425%436%5%6%9%37%
2475
July1st to 15thDay
10%425%5%36%5%6%9%41%
2408
16th to endDay
10%5%36%5%45%5%6%9%37%
2283
August1st to 15thDay
8%5%26%7%47%6%6%9%35%
2145
16th to endDay
12%425%5%45%5%7%8%37%
2251
September1st to 15thDay
14%7%36%5%35%45%8%35%
1903
16th to endDay
17%5%15%425%45%8%38%
1815
October1st to 15thDay
19%7%36%34435%7%32%
1667
16th to endDay
27%11%46%6%2445%421%
1744
November1st to 15thDay
16%10%36%5%2446%6%32%
1532
16th to endDay
19%16%5%9%43445%6%18%
1440
December1st to 15thDay
17%18%9%11%7%3444414%
1440
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%6%33%
1690
16th to endNight
13%7%35%5%24447%40%
1485
May1st to 15thNight
14%6%26%5%345%5%9%36%
1485
16th to endNight
9%5%334345%6%6%47%
1404
June1st to 15thNight
12%5%15%4245%7%7%42%
1282
16th to endNight
9%4135%35%5%6%9%44%
1155
July1st to 15thNight
432343335%9%56%
1217
16th to endNight
7%414435%5%6%10%46%
1577
August1st to 15thNight
7%4145%246%8%8%47%
1485
16th to endNight
9%3235%34346%52%
1587
September1st to 15thNight
12%5%25%425%347%46%
1724
16th to endNight
12%5%2442346%7%45%
1815
October1st to 15thNight
17%6%25%42435%6%39%
1963
16th to endNight
23%9%37%5%2445%6%26%
2126
November1st to 15thNight
14%8%36%5%2446%7%35%
2324
16th to endNight
22%13%5%7%5%2435%7%22%
2520
December1st to 15thNight
19%17%8%9%6%34445%15%
2520
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%27%
1952
16th to endDay
18%9%35%423347%37%
2145
May1st to 15thDay
18%6%36%5%3435%8%33%
2136
16th to endDay
13%5%35%5%3445%7%40%
2356
June1st to 15thDay
13%6%36%43446%9%36%
2343
16th to endDay
13%425%436%5%6%10%37%
2475
July1st to 15thDay
10%325%5%35%5%6%10%40%
2408
16th to endDay
11%5%25%6%36%5%6%9%37%
2283
August1st to 15thDay
9%426%6%46%7%6%8%36%
2145
16th to endDay
13%425%5%445%6%9%37%
2251
September1st to 15thDay
14%7%37%43445%7%35%
1903
16th to endDay
17%6%15%43445%8%38%
1815
October1st to 15thDay
19%7%27%43435%6%33%
1667
16th to endDay
27%11%37%6%25%445%22%
1744
November1st to 15thDay
16%10%26%5%25%45%7%33%
1532
16th to endDay
19%16%5%8%6%3445%6%19%
1440
December1st to 15thDay
17%18%9%10%7%35%44415%
1440
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%10%36%42335%6%33%
1690
16th to endNight
13%7%25%5%24447%40%
1485
May1st to 15thNight
14%6%26%5%345%5%8%37%
1484
16th to endNight
9%5%234246%5%6%47%
1404
June1st to 15thNight
12%425%3245%7%8%42%
1282
16th to endNight
9%3245%26%46%9%44%
1155
July1st to 15thNight
5%31442435%8%55%
1217
16th to endNight
7%314425%5%6%10%46%
1577
August1st to 15thNight
7%3144246%7%9%47%
1485
16th to endNight
9%424424446%52%
1587
September1st to 15thNight
11%6%25%425%346%46%
1724
16th to endNight
13%42442346%7%44%
1815
October1st to 15thNight
17%6%25%5%2435%7%39%
1963
16th to endNight
24%8%37%5%2345%6%26%
2126
November1st to 15thNight
15%7%36%5%3446%7%35%
2324
16th to endNight
22%13%5%7%5%2435%7%22%
2520
December1st to 15thNight
19%17%7%9%6%34445%16%
2520
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%18%8%
1952
16th to endDay
47%411%19%14%2
2145
May1st to 15thDay
47%6%14%20%9%
2136
16th to endDay
41%6%13%22%13%1
2360
June1st to 15thDay
42%7%14%22%11%1
2343
16th to endDay
40%9%12%22%14%
2475
July1st to 15thDay
37%7%12%26%15%1
2254
16th to endDay
42%7%14%20%12%2
2128
August1st to 15thDay
41%9%15%19%12%1
2132
16th to endDay
40%7%14%22%12%1
2251
September1st to 15thDay
45%6%15%20%10%
1903
16th to endDay
41%7%14%26%9%
1815
October1st to 15thDay
50%6%12%16%12%
1667
16th to endDay
63%6%13%12%4
1744
November1st to 15thDay
50%6%13%18%9%1
1532
16th to endDay
65%6%13%11%2
1440
December1st to 15thDay
71%7%12%7%1
1440
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%20%13%1
1690
16th to endNight
42%411%19%18%3
1485
May1st to 15thNight
43%5%12%23%12%1
1485
16th to endNight
34%6%14%25%15%3
1406
June1st to 15thNight
37%5%13%25%15%2
1282
16th to endNight
34%6%16%25%16%1
1155
July1st to 15thNight
26%5%10%29%23%3
1142
16th to endNight
30%9%16%22%17%3
1469
August1st to 15thNight
29%10%15%28%13%1
1474
16th to endNight
31%6%11%30%17%2
1587
September1st to 15thNight
37%6%13%26%14%1
1724
16th to endNight
36%6%13%28%13%
1815
October1st to 15thNight
44%6%12%20%15%1
1963
16th to endNight
56%5%14%15%6%
2126
November1st to 15thNight
46%6%14%20%10%1
2324
16th to endNight
61%5%15%13%3
2520
December1st to 15thNight
70%6%12%7%2
2520
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
25%12%26%21%12%2
212
16th to endDay
22%8%24%23%11%9%
210
May1st to 15thDay
17%7%28%25%14%5%
228
16th to endDay
14%427%28%16%7%
267
June1st to 15thDay
16%6%23%30%18%4
288
16th to endDay
12%5%29%32%15%4
420
July1st to 15thDay
11%426%28%20%9%
367
16th to endDay
10%220%29%25%11%
270
August1st to 15thDay
10%18%30%25%15%
253
16th to endDay
13%413%24%23%21%
268
September1st to 15thDay
13%416%21%31%12%
255
16th to endDay
19%5%17%24%21%12%
254
October1st to 15thDay
20%8%21%27%16%5%
255
16th to endDay
30%8%32%22%5%
256
November1st to 15thDay
17%16%29%22%9%4
81
16th to endDay
30%15%36%8%10%
60
December1st to 15thDay
28%30%26%10%5%
60
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%12%31%27%6%
632
16th to endNight
17%8%29%32%10%1
495
May1st to 15thNight
17%427%33%14%1
495
16th to endNight
12%430%34%17%1
380
June1st to 15thNight
13%230%40%13%
330
16th to endNight
12%422%45%14%
330
July1st to 15thNight
5%120%48%20%2
337
16th to endNight
9%115%47%23%1
522
August1st to 15thNight
9%114%41%28%3
494
16th to endNight
9%117%38%27%5%
537
September1st to 15thNight
13%419%32%22%6%
660
16th to endNight
15%317%33%24%5%
657
October1st to 15thNight
20%5%23%30%16%2
660
16th to endNight
29%10%32%21%5%
704
November1st to 15thNight
18%10%31%28%10%1
700
16th to endNight
27%12%30%21%7%
720
December1st to 15thNight
28%16%34%17%3
720
16th to endNight
26%14%37%17%3
768
Page generated at 2017-04-02 07:39:03. Version ac04

Copyright 2017 A. Danko


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