Hunt's Lodge Motorcycle Campground
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Hunt's Lodge Motorcycle Campground clear sky chart from 2005-11-05 to 2017-09-16.

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
41%
15461
20%
46927
13%
15418
49%
15418
22%
30459

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
21%
720
18%
2327
10%
716
32%
716
15%
1616
January16th to endNight
23%
768
19%
2476
10%
768
34%
768
15%
1715
February1st to 15thNight
21%
704
19%
2112
7%
701
33%
701
18%
1432
February16th to endNight
17%
631
20%
1893
7%
631
30%
631
15%
1321
March1st to 15thNight
24%
720
19%
2073
9%
720
32%
720
18%
1416
March16th to endNight
28%
768
16%
2112
9%
768
33%
768
20%
1458
April1st to 15thNight
35%
617
23%
1875
13%
617
46%
617
25%
1136
April16th to endNight
34%
540
22%
1686
13%
540
44%
540
24%
1047
May1st to 15thNight
40%
540
17%
1620
9%
540
47%
540
22%
1057
May16th to endNight
53%
561
17%
1683
9%
561
59%
561
22%
1085
June1st to 15thNight
61%
540
14%
1620
11%
540
64%
540
27%
1011
June16th to endNight
61%
540
17%
1620
12%
540
65%
540
27%
988
July1st to 15thNight
64%
510
12%
1530
12%
510
65%
510
26%
1011
July16th to endNight
62%
564
15%
1595
12%
531
68%
531
28%
1002
August1st to 15thNight
67%
539
18%
1609
16%
536
69%
536
27%
1018
August16th to endNight
65%
573
18%
1910
19%
573
67%
573
24%
1216
September1st to 15thNight
60%
693
17%
1953
15%
693
61%
693
25%
1303
September16th to endNight
57%
661
24%
1826
17%
661
62%
661
28%
1166
October1st to 15thNight
51%
660
32%
1829
27%
660
57%
660
33%
1092
October16th to endNight
46%
704
30%
2126
23%
704
56%
704
31%
1240
November1st to 15thNight
44%
700
28%
2276
24%
700
54%
700
28%
1301
November16th to endNight
35%
720
24%
2340
15%
720
47%
720
21%
1450
December1st to 15thNight
29%
720
19%
2340
12%
720
38%
720
16%
1613
December16th to endNight
24%
768
18%
2496
9%
768
35%
768
13%
1765

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
14%6%25%5%35%5%5%7%37%
47829
Night
13%6%25%42445%7%42%
47125
TransparencyDay
44%6%11%19%14%3
47530
Night
41%6%12%20%16%3
46928
SeeingDay
16%14%16%21%19%11%
5336
Night
14%21%16%24%19%3
15463

By Month

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%10%46%5%2444433%
1611
16th to endDay
18%8%34424446%38%
1746
February1st to 15thDay
19%11%38%5%23445%33%
1750
16th to endDay
18%10%37%32235%5%36%
1580
March1st to 15thDay
17%10%35%42445%7%33%
1887
16th to endDay
17%8%25%5%2345%7%36%
2111
April1st to 15thDay
12%6%24425%5%6%7%41%
2082
16th to endDay
14%5%26%5%2445%6%41%
2273
May1st to 15thDay
14%5%245%35%5%5%7%37%
2331
16th to endDay
12%5%26%7%35%5%6%8%35%
2431
June1st to 15thDay
7%426%6%48%7%8%10%33%
2340
16th to endDay
6%425%6%45%6%7%10%39%
2340
July1st to 15thDay
11%5%26%7%47%6%8%9%29%
2340
16th to endDay
11%5%26%7%5%7%7%8%8%28%
2465
August1st to 15thDay
9%5%26%6%47%7%7%10%32%
2337
16th to endDay
14%6%36%6%47%7%6%8%28%
2292
September1st to 15thDay
14%6%37%7%35%5%5%7%32%
1995
16th to endDay
15%5%25%5%2445%7%40%
1824
October1st to 15thDay
12%423423346%53%
1800
16th to endDay
15%5%2322233454%
1744
November1st to 15thDay
13%6%13323336%51%
1582
16th to endDay
15%6%34324445%45%
1620
December1st to 15thDay
19%8%36%5%2445%6%33%
1620
16th to endDay
23%9%25%323436%34%
1728
January1st to 15thNight
18%7%47%5%33335%36%
2327
16th to endNight
18%9%46%32435%435%
2476
February1st to 15thNight
15%9%35%423435%40%
2103
16th to endNight
19%9%36%324435%36%
1893
March1st to 15thNight
16%9%35%324446%37%
2073
16th to endNight
15%8%35%424445%40%
2112
April1st to 15thNight
13%5%1432436%7%47%
1875
16th to endNight
12%5%25%433447%46%
1686
May1st to 15thNight
13%425%6%145%5%8%41%
1619
16th to endNight
8%5%24435%5%6%11%42%
1682
June1st to 15thNight
6%315%435%5%9%14%40%
1620
16th to endNight
5%4245%25%6%7%9%46%
1620
July1st to 15thNight
9%325%5%36%6%7%11%37%
1620
16th to endNight
6%3246%36%6%8%13%38%
1703
August1st to 15thNight
5%325%5%36%6%7%11%41%
1620
16th to endNight
8%4245%36%6%6%11%39%
1910
September1st to 15thNight
11%5%26%5%26%46%8%40%
1953
16th to endNight
11%425%5%3345%6%46%
1826
October1st to 15thNight
14%323323345%54%
1829
16th to endNight
14%41342233455%
2126
November1st to 15thNight
12%6%24313336%53%
2276
16th to endNight
14%7%24424335%46%
2340
December1st to 15thNight
17%9%35%5%2345%6%35%
2340
16th to endNight
21%11%35%424445%32%
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
54%35%17%15%2
1612
16th to endDay
45%49%22%15%2
1746
February1st to 15thDay
53%36%18%15%1
1752
16th to endDay
50%39%17%16%2
1580
March1st to 15thDay
49%5%8%16%15%3
1887
16th to endDay
48%413%20%11%1
2112
April1st to 15thDay
39%5%11%22%18%2
2082
16th to endDay
42%410%21%17%4
2273
May1st to 15thDay
44%7%11%21%12%2
2331
16th to endDay
45%8%13%19%11%2
2435
June1st to 15thDay
41%9%17%22%8%1
2340
16th to endDay
37%10%16%19%13%3
2340
July1st to 15thDay
46%10%17%15%8%1
2201
16th to endDay
47%9%16%15%8%1
2310
August1st to 15thDay
42%10%15%19%8%2
2324
16th to endDay
48%9%14%16%9%1
2292
September1st to 15thDay
49%8%11%14%12%3
1995
16th to endDay
42%5%11%18%19%3
1824
October1st to 15thDay
32%5%9%22%23%6%
1800
16th to endDay
34%37%22%26%6%
1744
November1st to 15thDay
34%46%18%29%6%
1582
16th to endDay
40%36%21%23%4
1620
December1st to 15thDay
51%5%7%18%13%3
1620
16th to endDay
51%410%16%14%1
1728
January1st to 15thNight
51%47%15%17%3
2327
16th to endNight
50%47%18%16%3
2476
February1st to 15thNight
47%39%19%16%3
2112
16th to endNight
50%47%19%15%1
1893
March1st to 15thNight
46%410%17%16%4
2073
16th to endNight
45%5%12%22%13%1
2112
April1st to 15thNight
36%411%24%19%3
1875
16th to endNight
37%6%11%23%17%3
1686
May1st to 15thNight
40%7%15%21%14%1
1620
16th to endNight
35%10%16%23%11%2
1684
June1st to 15thNight
30%11%22%25%8%
1620
16th to endNight
30%10%18%22%12%3
1620
July1st to 15thNight
37%10%20%20%10%1
1530
16th to endNight
32%10%24%19%10%2
1595
August1st to 15thNight
32%12%17%23%12%1
1609
16th to endNight
37%9%19%20%11%1
1910
September1st to 15thNight
40%8%16%17%14%3
1953
16th to endNight
36%7%10%20%21%3
1826
October1st to 15thNight
32%410%20%25%7%
1829
16th to endNight
33%3421%28%7%
2126
November1st to 15thNight
34%35%19%26%10%
2276
16th to endNight
40%36%20%21%5%
2340
December1st to 15thNight
50%49%16%16%4
2340
16th to endNight
53%49%17%14%2
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
28%22%24%15%7%1
90
16th to endDay
18%32%39%45%
96
February1st to 15thDay
32%25%33%8%
90
16th to endDay
30%18%37%12%1
81
March1st to 15thDay
27%23%25%18%31
177
16th to endDay
19%23%27%18%10%
288
April1st to 15thDay
17%22%18%24%15%2
270
16th to endDay
15%19%20%23%17%4
270
May1st to 15thDay
15%21%26%15%12%8%
288
16th to endDay
15%14%16%24%18%10%
331
June1st to 15thDay
9%12%7%25%26%18%
315
16th to endDay
11%12%9%24%23%19%
315
July1st to 15thDay
14%7%10%25%21%20%
305
16th to endDay
9%10%5%18%26%28%
326
August1st to 15thDay
11%7%8%22%27%22%
313
16th to endDay
16%6%7%20%27%22%
332
September1st to 15thDay
12%8%8%18%32%19%
315
16th to endDay
18%7%9%22%30%11%
257
October1st to 15thDay
16%9%18%24%23%7%
255
16th to endDay
17%8%18%25%24%5%
256
November1st to 15thDay
16%14%26%24%14%3
90
16th to endDay
18%10%34%25%8%2
90
December1st to 15thDay
24%21%33%16%31
90
16th to endDay
31%21%31%11%4
96
January1st to 15thNight
22%27%24%19%5%
720
16th to endNight
18%30%22%25%2
768
February1st to 15thNight
19%28%26%22%2
704
16th to endNight
22%30%26%17%3
631
March1st to 15thNight
20%28%23%21%5%
720
16th to endNight
17%25%23%22%9%
768
April1st to 15thNight
14%26%22%27%7%1
617
16th to endNight
11%23%24%26%13%
540
May1st to 15thNight
12%20%21%26%16%2
540
16th to endNight
9%19%10%29%26%5%
563
June1st to 15thNight
6%17%8%24%35%7%
540
16th to endNight
5%17%7%23%35%10%
540
July1st to 15thNight
10%12%425%38%8%
510
16th to endNight
7%16%416%41%14%
564
August1st to 15thNight
7%9%424%45%8%
539
16th to endNight
9%9%6%24%41%9%
573
September1st to 15thNight
12%9%5%23%40%8%
693
16th to endNight
12%10%8%31%33%3
661
October1st to 15thNight
14%13%15%23%26%5%
660
16th to endNight
14%15%19%27%19%3
704
November1st to 15thNight
12%21%16%26%19%3
700
16th to endNight
16%27%18%26%11%
720
December1st to 15thNight
19%25%20%25%8%
720
16th to endNight
23%27%21%23%4
768
Page generated at 2017-09-17 12:05:47. Version ac04

Copyright 2017 A. Danko


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