Kinnikinic Creek
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kinnikinic Creek clear sky chart from 2005-11-05 to 2017-09-20.

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
59%
15140
19%
46911
17%
15113
62%
15113
33%
27138

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
49%
716
15%
2506
15%
716
51%
716
21%
1610
January16th to endNight
53%
768
19%
2685
19%
768
57%
768
27%
1573
February1st to 15thNight
49%
698
10%
2267
11%
696
50%
696
23%
1495
February16th to endNight
46%
632
14%
1895
12%
632
50%
632
28%
1219
March1st to 15thNight
51%
720
12%
2106
10%
720
54%
720
30%
1307
March16th to endNight
48%
768
14%
2112
10%
768
50%
768
31%
1325
April1st to 15thNight
52%
692
14%
1772
8%
692
54%
692
30%
1182
April16th to endNight
57%
540
17%
1620
14%
540
58%
540
33%
956
May1st to 15thNight
60%
539
17%
1619
14%
539
63%
539
37%
916
May16th to endNight
59%
439
12%
1563
14%
439
61%
439
24%
945
June1st to 15thNight
65%
360
15%
1278
17%
360
69%
360
31%
715
June16th to endNight
75%
360
26%
1290
35%
360
79%
360
47%
578
July1st to 15thNight
86%
340
21%
1360
32%
340
89%
340
54%
512
July16th to endNight
88%
376
32%
1416
45%
354
90%
354
58%
510
August1st to 15thNight
79%
539
29%
1611
27%
536
80%
536
56%
742
August16th to endNight
77%
607
36%
1753
27%
607
79%
607
58%
802
September1st to 15thNight
76%
720
31%
1895
23%
720
79%
720
57%
982
September16th to endNight
72%
675
31%
1869
26%
675
75%
675
48%
1010
October1st to 15thNight
64%
660
26%
1873
22%
660
68%
660
41%
1066
October16th to endNight
62%
704
22%
2258
20%
704
68%
704
36%
1240
November1st to 15thNight
53%
700
20%
2275
20%
700
56%
700
28%
1350
November16th to endNight
50%
793
16%
2413
12%
793
54%
793
29%
1470
December1st to 15thNight
49%
900
10%
2661
8%
900
52%
900
25%
1746
December16th to endNight
43%
894
13%
2814
10%
894
46%
894
22%
1887

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
3426%6%36%6%6%8%44%
47935
Night
2425%5%35%6%7%9%48%
47084
TransparencyDay
33%7%15%21%15%6%
47608
Night
28%9%18%24%14%4
46912
SeeingDay
8%11%28%32%14%4
5589
Night
4423%41%21%3
15152

By Month

Percentage Cloud Cover SW (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
327%6%48%6%8%13%37%
1432
16th to endDay
436%7%37%7%9%10%38%
1539
February1st to 15thDay
338%7%5%7%8%7%11%36%
1593
16th to endDay
438%8%5%9%10%8%10%30%
1579
March1st to 15thDay
1426%6%49%8%9%12%34%
1854
16th to endDay
25%38%7%6%8%8%9%11%28%
2112
April1st to 15thDay
25%38%8%5%7%7%9%11%29%
2173
16th to endDay
45%37%7%46%5%6%10%39%
2340
May1st to 15thDay
47%36%6%35%6%5%9%41%
2331
16th to endDay
7%11%49%7%47%6%5%7%28%
2548
June1st to 15thDay
7%6%36%6%36%6%7%8%36%
2679
16th to endDay
3313424347%60%
2666
July1st to 15thDay
33134245%5%7%57%
2520
16th to endDay
331442443463%
2657
August1st to 15thDay
3215%5%45%5%7%6%52%
2340
16th to endDay
2313324445%63%
2447
September1st to 15thDay
4313323336%61%
2064
16th to endDay
5%5%24424448%54%
1860
October1st to 15thDay
6%6%36%5%3345%6%47%
1756
16th to endDay
2426%7%35%6%6%9%45%
1612
November1st to 15thDay
15%37%6%36%6%7%9%40%
1584
16th to endDay
1336%5%37%7%8%9%42%
1533
December1st to 15thDay
14310%10%47%7%9%9%32%
1297
16th to endDay
5%47%10%6%8%8%8%11%29%
1419
January1st to 15thNight
5%37%7%47%6%7%11%38%
2506
16th to endNight
5%36%5%35%6%8%10%43%
2685
February1st to 15thNight
5%38%6%5%6%8%9%10%34%
2256
16th to endNight
338%6%47%7%9%11%37%
1895
March1st to 15thNight
325%5%36%7%10%13%40%
2106
16th to endNight
15%26%5%35%6%9%12%41%
2112
April1st to 15thNight
29%45%5%36%5%8%10%38%
1772
16th to endNight
36%25%6%345%7%9%46%
1620
May1st to 15thNight
35%25%4346%5%10%49%
1619
16th to endNight
6%7%35%5%35%5%8%10%38%
1562
June1st to 15thNight
5%325%5%36%46%8%47%
1278
16th to endNight
2213324347%64%
1290
July1st to 15thNight
1122337%8%67%
1440
16th to endNight
112112345%74%
1512
August1st to 15thNight
12222346%8%65%
1620
16th to endNight
2112222347%68%
1753
September1st to 15thNight
3213312345%68%
1895
16th to endNight
5%4232335%6%61%
1869
October1st to 15thNight
6%5%223145%6%6%54%
1873
16th to endNight
34245%345%6%9%50%
2258
November1st to 15thNight
5%37%6%35%6%7%9%44%
2275
16th to endNight
1225%5%36%7%8%10%45%
2413
December1st to 15thNight
336%7%47%8%9%12%36%
2661
16th to endNight
5%48%7%5%8%7%8%10%32%
2814

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
31%14%23%20%8%1
1432
16th to endDay
33%11%19%23%10%3
1539
February1st to 15thDay
33%15%24%17%7%1
1593
16th to endDay
40%10%23%20%4
1579
March1st to 15thDay
33%13%28%18%5%
1854
16th to endDay
41%11%24%17%4
2112
April1st to 15thDay
41%10%21%21%4
2173
16th to endDay
38%6%23%22%8%
2340
May1st to 15thDay
37%5%20%27%8%
2331
16th to endDay
51%5%17%18%5%1
2552
June1st to 15thDay
41%7%12%23%11%2
2679
16th to endDay
24%27%23%33%8%
2666
July1st to 15thDay
23%45%20%26%18%
2371
16th to endDay
22%3311%27%31%
2490
August1st to 15thDay
27%48%17%24%17%
2325
16th to endDay
20%36%21%29%16%
2447
September1st to 15thDay
23%46%22%30%13%
2064
16th to endDay
28%311%27%22%6%
1860
October1st to 15thDay
35%5%16%24%13%3
1756
16th to endDay
31%7%17%25%15%1
1612
November1st to 15thDay
36%10%17%22%10%2
1584
16th to endDay
32%10%19%24%8%4
1533
December1st to 15thDay
41%13%22%16%5%
1297
16th to endDay
42%12%21%17%41
1419
January1st to 15thNight
34%15%19%19%9%1
2506
16th to endNight
30%11%18%24%11%3
2685
February1st to 15thNight
37%12%23%18%7%
2267
16th to endNight
33%12%26%21%41
1895
March1st to 15thNight
28%14%26%21%8%
2106
16th to endNight
29%12%27%23%6%
2112
April1st to 15thNight
36%9%23%23%7%
1772
16th to endNight
31%7%23%27%10%
1620
May1st to 15thNight
28%7%18%35%10%
1620
16th to endNight
36%9%20%26%8%
1563
June1st to 15thNight
30%7%15%31%12%2
1278
16th to endNight
18%47%27%31%10%
1290
July1st to 15thNight
12%49%24%29%18%
1360
16th to endNight
12%2414%35%31%
1416
August1st to 15thNight
15%49%21%27%20%
1611
16th to endNight
15%27%22%32%19%
1753
September1st to 15thNight
17%48%24%31%13%
1895
16th to endNight
22%411%29%24%6%
1869
October1st to 15thNight
26%6%17%31%16%2
1873
16th to endNight
27%6%18%29%16%
2258
November1st to 15thNight
32%9%18%25%12%1
2275
16th to endNight
26%14%22%22%11%1
2413
December1st to 15thNight
34%13%27%18%5%
2661
16th to endNight
40%11%20%20%6%1
2814

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
110%46%26%15%
60
16th to endDay
36%13%46%21%9%
65
February1st to 15thDay
10%32%32%17%7%
108
16th to endDay
210%34%38%12%1
238
March1st to 15thDay
49%34%42%8%
270
16th to endDay
6%11%34%39%7%
288
April1st to 15thDay
5%10%28%33%14%6%
269
16th to endDay
11%8%28%35%13%2
270
May1st to 15thDay
12%11%27%32%13%3
288
16th to endDay
17%10%23%28%15%4
330
June1st to 15thDay
14%12%23%28%14%5%
474
16th to endDay
8%16%22%29%21%3
461
July1st to 15thDay
6%12%30%30%17%2
305
16th to endDay
6%15%35%29%10%2
327
August1st to 15thDay
6%10%35%33%11%3
315
16th to endDay
8%12%30%26%15%6%
332
September1st to 15thDay
10%18%23%26%14%6%
315
16th to endDay
9%16%27%26%14%4
272
October1st to 15thDay
15%9%28%27%14%4
196
16th to endDay
12%10%20%37%16%2
96
November1st to 15thDay
10%5%7%45%27%3
90
16th to endDay
15%36%45%7%3
90
December1st to 15thDay
410%40%31%10%1
66
16th to endDay
3318%51%18%4
64
January1st to 15thNight
27%28%41%15%3
720
16th to endNight
3427%41%19%4
768
February1st to 15thNight
25%28%42%17%2
704
16th to endNight
2334%39%15%3
632
March1st to 15thNight
2334%42%14%2
720
16th to endNight
47%31%41%14%1
768
April1st to 15thNight
5%5%24%40%19%5%
692
16th to endNight
6%422%47%16%2
540
May1st to 15thNight
5%5%20%38%25%3
540
16th to endNight
10%5%15%33%31%4
440
June1st to 15thNight
8%315%44%25%2
360
16th to endNight
2411%46%31%3
360
July1st to 15thNight
15%48%39%4
340
16th to endNight
215%49%36%4
376
August1st to 15thNight
2110%45%37%2
539
16th to endNight
3210%44%35%3
607
September1st to 15thNight
5%111%35%36%9%
720
16th to endNight
8%212%37%31%9%
675
October1st to 15thNight
10%317%39%24%4
660
16th to endNight
5%5%20%45%18%5%
704
November1st to 15thNight
5%6%24%45%15%1
700
16th to endNight
46%33%38%12%4
793
December1st to 15thNight
26%30%45%12%1
900
16th to endNight
35%33%40%14%2
894
Page generated at 2017-09-21 05:18:16. Version ac04

Copyright 2017 A. Danko


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