Camp Rock Road
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Camp Rock Road 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
69%
16279
39%
47747
30%
16240
78%
16240
62%
20754

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
66%
716
33%
2327
29%
716
74%
716
49%
1052
January16th to endNight
63%
768
38%
2352
32%
768
73%
768
49%
1116
February1st to 15thNight
62%
699
37%
2108
31%
698
72%
698
53%
980
February16th to endNight
57%
632
36%
1895
31%
632
70%
632
47%
930
March1st to 15thNight
59%
720
34%
2154
27%
720
71%
720
54%
957
March16th to endNight
57%
768
37%
2046
23%
768
70%
768
56%
985
April1st to 15thNight
47%
719
38%
1799
13%
719
62%
719
58%
865
April16th to endNight
53%
720
41%
1800
16%
720
66%
720
66%
826
May1st to 15thNight
58%
543
41%
1622
25%
542
66%
542
70%
630
May16th to endNight
52%
561
37%
1685
19%
561
66%
561
66%
651
June1st to 15thNight
63%
540
35%
1620
24%
540
71%
540
76%
613
June16th to endNight
69%
443
40%
1523
34%
443
78%
443
83%
497
July1st to 15thNight
87%
437
33%
1457
31%
437
90%
437
69%
557
July16th to endNight
85%
564
36%
1593
30%
531
87%
531
62%
699
August1st to 15thNight
90%
717
38%
1790
25%
713
91%
713
81%
796
August16th to endNight
89%
764
44%
1910
29%
764
90%
764
79%
866
September1st to 15thNight
90%
720
41%
1873
31%
720
92%
720
76%
837
September16th to endNight
86%
716
51%
1980
42%
716
92%
716
86%
774
October1st to 15thNight
76%
720
43%
1980
34%
720
84%
720
75%
837
October16th to endNight
79%
768
46%
2340
43%
768
87%
768
68%
940
November1st to 15thNight
77%
760
38%
2470
35%
760
85%
760
63%
1002
November16th to endNight
75%
780
43%
2535
43%
780
83%
780
60%
1042
December1st to 15thNight
66%
736
34%
2392
31%
736
74%
736
48%
1105
December16th to endNight
59%
768
35%
2496
29%
768
69%
768
44%
1197

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
112212335%73%
48723
Night
111212235%75%
47945
TransparencyDay
12%35%14%27%35%
48418
Night
10%36%16%30%33%
47752
SeeingDay
412%26%33%18%4
6109
Night
26%17%31%32%8%
16290

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
2112323348%66%
1611
16th to endDay
2213223346%65%
1869
February1st to 15thDay
1212313347%69%
1751
16th to endDay
2213323447%64%
1579
March1st to 15thDay
12221225%9%68%
1804
16th to endDay
112214348%69%
2176
April1st to 15thDay
2212213335%72%
2149
16th to endDay
11111126%79%
2160
May1st to 15thDay
1122235%79%
2328
16th to endDay
11112235%79%
2429
June1st to 15thDay
1122483%
2340
16th to endDay
1111187%
2427
July1st to 15thDay
221222435%6%67%
2406
16th to endDay
3213425%45%5%61%
2464
August1st to 15thDay
11122234473%
2160
16th to endDay
11122245%5%71%
2292
September1st to 15thDay
21121334473%
2085
16th to endDay
111122384%
1980
October1st to 15thDay
11111323478%
1980
16th to endDay
111123482%
1882
November1st to 15thDay
12222233475%
1719
16th to endDay
111223346%71%
1755
December1st to 15thDay
12132233410%63%
1649
16th to endDay
2213313347%64%
1728
January1st to 15thNight
1213313348%66%
2327
16th to endNight
3212323345%67%
2352
February1st to 15thNight
1212323237%69%
2101
16th to endNight
321222346%6%64%
1895
March1st to 15thNight
21121245%8%68%
2154
16th to endNight
112213446%71%
2046
April1st to 15thNight
111122346%74%
1799
16th to endNight
1112145%81%
1800
May1st to 15thNight
11335%82%
1622
16th to endNight
111135%83%
1684
June1st to 15thNight
111112385%
1620
16th to endNight
111389%
1523
July1st to 15thNight
11121213479%
1545
16th to endNight
1212212335%73%
1701
August1st to 15thNight
1111123482%
1800
16th to endNight
121122482%
1910
September1st to 15thNight
1111223480%
1873
16th to endNight
12389%
1980
October1st to 15thNight
122335%80%
1980
16th to endNight
1111122381%
2340
November1st to 15thNight
11121233477%
2470
16th to endNight
112112237%73%
2535
December1st to 15thNight
22242335%8%63%
2392
16th to endNight
2313323447%64%
2496

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
16%5%8%19%33%17%
1612
16th to endDay
18%5%9%20%28%19%
1869
February1st to 15thDay
14%36%22%27%24%
1751
16th to endDay
16%6%8%20%33%15%
1579
March1st to 15thDay
12%35%22%33%22%
1804
16th to endDay
12%49%23%31%19%
2176
April1st to 15thDay
13%35%16%38%22%
2149
16th to endDay
8%25%19%34%29%
2160
May1st to 15thDay
8%2415%31%36%
2328
16th to endDay
9%2412%37%33%
2432
June1st to 15thDay
5%139%23%56%
2340
16th to endDay
7%12310%74%
2427
July1st to 15thDay
15%35%9%15%50%
2266
16th to endDay
20%5%6%13%19%33%
2309
August1st to 15thDay
11%3410%16%53%
2146
16th to endDay
12%46%9%23%44%
2292
September1st to 15thDay
13%35%9%22%45%
2085
16th to endDay
7%136%30%50%
1980
October1st to 15thDay
9%3411%31%40%
1980
16th to endDay
7%3311%31%42%
1882
November1st to 15thDay
12%25%17%35%25%
1719
16th to endDay
12%5%6%19%29%26%
1755
December1st to 15thDay
16%5%10%21%27%18%
1649
16th to endDay
18%7%9%25%23%14%
1728
January1st to 15thNight
16%5%8%19%28%22%
2327
16th to endNight
17%49%19%26%23%
2352
February1st to 15thNight
16%37%20%28%24%
2112
16th to endNight
16%5%8%21%30%16%
1895
March1st to 15thNight
11%49%21%29%22%
2154
16th to endNight
11%5%8%22%34%17%
2046
April1st to 15thNight
11%28%22%34%21%
1799
16th to endNight
6%25%22%37%25%
1800
May1st to 15thNight
43418%40%28%
1623
16th to endNight
5%25%19%39%27%
1685
June1st to 15thNight
5%1311%24%53%
1620
16th to endNight
3125%15%70%
1523
July1st to 15thNight
9%239%18%56%
1457
16th to endNight
12%36%15%25%36%
1593
August1st to 15thNight
5%239%24%53%
1790
16th to endNight
7%139%30%47%
1910
September1st to 15thNight
7%2410%23%50%
1873
16th to endNight
3117%33%53%
1980
October1st to 15thNight
7%25%11%34%38%
1980
16th to endNight
8%248%31%44%
2340
November1st to 15thNight
10%35%15%37%27%
2470
16th to endNight
12%26%19%31%28%
2535
December1st to 15thNight
17%49%18%30%19%
2392
16th to endNight
18%6%12%22%25%15%
2496

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
7%18%25%38%7%1
90
16th to endDay
5%18%31%32%8%2
237
February1st to 15thDay
421%24%30%16%1
266
16th to endDay
7%27%26%27%10%
238
March1st to 15thDay
7%20%29%27%14%1
270
16th to endDay
8%19%31%26%12%1
288
April1st to 15thDay
10%25%32%18%10%2
269
16th to endDay
7%26%32%23%7%1
270
May1st to 15thDay
318%31%29%12%4
288
16th to endDay
316%31%32%12%3
330
June1st to 15thDay
210%34%31%16%4
315
16th to endDay
1435%32%18%7%
315
July1st to 15thDay
2114%44%28%7%
305
16th to endDay
4116%37%29%11%
327
August1st to 15thDay
1219%38%26%10%
315
16th to endDay
118%40%27%10%
332
September1st to 15thDay
1224%46%22%2
315
16th to endDay
16%26%40%21%2
315
October1st to 15thDay
111%34%34%16%1
315
16th to endDay
5%8%17%33%28%6%
243
November1st to 15thDay
5%8%17%34%26%8%
135
16th to endDay
412%17%34%27%2
135
December1st to 15thDay
5%12%25%34%22%2
100
16th to endDay
10%18%22%34%13%
96
January1st to 15thNight
36%17%32%29%10%
720
16th to endNight
47%19%33%26%8%
768
February1st to 15thNight
37%21%32%25%8%
704
16th to endNight
413%22%31%22%5%
632
March1st to 15thNight
210%23%35%22%5%
720
16th to endNight
213%24%29%24%5%
768
April1st to 15thNight
316%29%24%20%5%
719
16th to endNight
214%27%26%23%5%
720
May1st to 15thNight
19%28%36%19%4
543
16th to endNight
114%28%27%25%2
563
June1st to 15thNight
6%27%41%21%1
540
16th to endNight
126%41%28%1
443
July1st to 15thNight
25%41%45%5%
437
16th to endNight
21436%50%5%
564
August1st to 15thNight
1430%51%11%
717
16th to endNight
5%23%52%16%
764
September1st to 15thNight
5%26%50%15%
720
16th to endNight
210%29%43%13%
716
October1st to 15thNight
415%35%33%9%
720
16th to endNight
1411%27%36%17%
768
November1st to 15thNight
1315%34%35%10%
760
16th to endNight
3412%31%33%14%
780
December1st to 15thNight
47%16%34%30%7%
736
16th to endNight
5%10%21%32%24%6%
768
Page generated at 2017-12-05 07:18:59. Version ac04

Copyright 2017 A. Danko


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