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MedoMak Family Camp & Retreat Center
.

Medomak Family Camp
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Medomak Family Camp clear sky chart from 2005-11-05 to 2017-09-23.

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
27%
14846
16%
46928
7%
14814
38%
14814
19%
31577

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
18%
720
19%
2506
6%
716
34%
716
16%
1608
January16th to endNight
14%
768
17%
2685
3%
768
31%
768
13%
1772
February1st to 15thNight
15%
703
14%
2257
4%
701
28%
701
14%
1581
February16th to endNight
18%
631
18%
1893
4%
631
35%
631
17%
1292
March1st to 15thNight
15%
720
15%
2106
3%
720
29%
720
16%
1514
March16th to endNight
23%
768
19%
2103
7%
768
34%
768
21%
1408
April1st to 15thNight
18%
691
17%
1769
4%
691
28%
691
19%
1289
April16th to endNight
26%
540
15%
1620
4%
540
34%
540
18%
1133
May1st to 15thNight
25%
540
12%
1620
7%
540
31%
540
16%
1173
May16th to endNight
28%
442
11%
1564
9%
441
34%
441
13%
1147
June1st to 15thNight
32%
360
9%
1272
7%
360
39%
360
12%
943
June16th to endNight
40%
360
9%
1282
9%
360
45%
360
20%
868
July1st to 15thNight
48%
340
9%
1360
13%
340
52%
340
19%
859
July16th to endNight
44%
376
12%
1418
12%
354
50%
354
18%
918
August1st to 15thNight
45%
537
11%
1607
7%
534
48%
534
22%
1079
August16th to endNight
46%
604
20%
1750
12%
604
50%
604
31%
1090
September1st to 15thNight
41%
720
17%
1905
8%
720
47%
720
32%
1230
September16th to endNight
41%
689
26%
1902
13%
689
51%
689
35%
1128
October1st to 15thNight
33%
660
21%
1884
10%
660
43%
660
24%
1257
October16th to endNight
22%
704
16%
2255
6%
704
34%
704
19%
1497
November1st to 15thNight
32%
700
20%
2277
11%
700
44%
700
21%
1473
November16th to endNight
25%
735
19%
2427
7%
735
39%
735
17%
1591
December1st to 15thNight
16%
750
16%
2658
4%
750
31%
750
15%
1815
December16th to endNight
15%
788
17%
2808
3%
788
31%
788
13%
1912

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
19%6%25%424446%37%
47966
Night
18%7%35%424446%38%
47099
TransparencyDay
46%6%11%21%13%1
47656
Night
46%5%11%21%13%1
46928
SeeingDay
23%14%31%19%8%2
6266
Night
22%12%32%23%7%
14847

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
16%6%36%42436%6%39%
1432
16th to endDay
16%8%35%423437%40%
1539
February1st to 15thDay
16%10%36%5%34345%35%
1601
16th to endDay
15%9%36%5%26%5%46%34%
1580
March1st to 15thDay
21%8%25%5%34335%35%
1844
16th to endDay
16%8%25%424445%42%
2118
April1st to 15thDay
20%7%35%5%24345%36%
2179
16th to endDay
21%6%24434446%36%
2340
May1st to 15thDay
27%7%35%5%23345%31%
2332
16th to endDay
22%6%345%2435%7%34%
2560
June1st to 15thDay
27%7%25%5%24446%29%
2685
16th to endDay
22%6%26%5%345%5%7%31%
2673
July1st to 15thDay
14%6%25%5%346%6%8%37%
2520
16th to endDay
15%5%35%5%35%5%6%9%34%
2642
August1st to 15thDay
15%5%25%5%35%6%6%8%35%
2340
16th to endDay
13%42433346%7%45%
2450
September1st to 15thDay
13%5%24434346%47%
2053
16th to endDay
16%423322237%50%
1895
October1st to 15thDay
20%6%26%423335%41%
1746
16th to endDay
21%6%25%424435%39%
1614
November1st to 15thDay
21%5%25%33335%6%39%
1581
16th to endDay
21%7%24423345%42%
1530
December1st to 15thDay
22%8%345%24345%36%
1299
16th to endDay
22%10%45%5%2333433%
1413
January1st to 15thNight
15%8%344245%5%6%40%
2506
16th to endNight
15%9%35%5%34445%37%
2685
February1st to 15thNight
13%8%46%7%35%445%33%
2256
16th to endNight
15%9%45%5%34435%38%
1893
March1st to 15thNight
19%10%35%5%245%45%33%
2093
16th to endNight
17%6%25%423346%42%
2103
April1st to 15thNight
20%8%36%43444434%
1769
16th to endNight
21%7%25%5%24445%35%
1620
May1st to 15thNight
22%6%46%5%34446%30%
1620
16th to endNight
23%8%36%5%26%35%7%26%
1562
June1st to 15thNight
25%8%35%4345%5%7%26%
1272
16th to endNight
20%5%34435%45%8%35%
1282
July1st to 15thNight
16%6%25%435%5%5%7%36%
1440
16th to endNight
15%5%26%5%35%5%6%10%34%
1514
August1st to 15thNight
13%5%36%5%445%5%8%37%
1618
16th to endNight
12%6%2331445%8%47%
1750
September1st to 15thNight
14%423423336%50%
1905
16th to endNight
12%414423337%51%
1902
October1st to 15thNight
21%424423346%41%
1884
16th to endNight
20%6%34433345%39%
2255
November1st to 15thNight
19%5%25%423446%40%
2277
16th to endNight
18%6%25%5%23445%40%
2427
December1st to 15thNight
21%9%25%423335%36%
2658
16th to endNight
22%10%35%322345%36%
2808

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
43%7%11%22%13%2
1433
16th to endDay
44%5%12%24%12%1
1539
February1st to 15thDay
50%412%19%12%
1604
16th to endDay
49%6%10%18%12%2
1580
March1st to 15thDay
51%410%17%12%2
1854
16th to endDay
44%5%9%18%18%4
2118
April1st to 15thDay
48%47%19%17%2
2179
16th to endDay
48%5%9%19%13%3
2340
May1st to 15thDay
55%5%7%18%12%1
2332
16th to endDay
49%7%12%18%10%1
2564
June1st to 15thDay
55%5%10%18%8%1
2685
16th to endDay
50%7%10%17%12%
2673
July1st to 15thDay
41%8%14%23%10%
2371
16th to endDay
44%9%14%21%10%1
2476
August1st to 15thDay
43%8%14%24%8%
2327
16th to endDay
34%8%14%24%17%
2450
September1st to 15thDay
37%6%11%26%17%1
2053
16th to endDay
34%311%28%20%1
1895
October1st to 15thDay
45%49%25%13%1
1746
16th to endDay
46%411%23%12%
1614
November1st to 15thDay
44%6%13%21%13%1
1581
16th to endDay
45%414%19%15%1
1530
December1st to 15thDay
49%6%11%22%10%
1299
16th to endDay
54%49%17%13%
1413
January1st to 15thNight
42%7%12%24%11%1
2506
16th to endNight
47%5%10%21%14%2
2685
February1st to 15thNight
50%5%11%19%11%1
2257
16th to endNight
47%5%10%20%13%2
1893
March1st to 15thNight
52%48%19%12%2
2106
16th to endNight
44%310%19%17%4
2103
April1st to 15thNight
51%47%18%15%2
1769
16th to endNight
49%5%10%18%12%3
1620
May1st to 15thNight
52%6%9%16%13%1
1620
16th to endNight
55%6%9%16%10%
1564
June1st to 15thNight
56%7%12%15%6%1
1272
16th to endNight
47%6%13%19%11%1
1282
July1st to 15thNight
42%8%16%21%10%
1360
16th to endNight
44%7%15%22%8%1
1418
August1st to 15thNight
44%7%15%22%9%
1607
16th to endNight
34%7%14%26%16%
1750
September1st to 15thNight
36%6%11%28%15%1
1905
16th to endNight
33%312%30%19%1
1902
October1st to 15thNight
44%49%24%15%1
1884
16th to endNight
46%412%23%12%
2255
November1st to 15thNight
43%5%13%21%14%1
2277
16th to endNight
44%5%11%21%14%1
2427
December1st to 15thNight
50%5%9%23%11%
2658
16th to endNight
50%5%11%20%12%
2808

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
13%28%33%18%6%
60
16th to endDay
22%25%34%16%1
67
February1st to 15thDay
27%17%34%17%3
241
16th to endDay
19%21%32%20%5%
239
March1st to 15thDay
27%23%32%14%2
270
16th to endDay
22%23%28%15%6%2
288
April1st to 15thDay
27%17%32%15%6%1
270
16th to endDay
25%19%33%12%6%2
270
May1st to 15thDay
32%15%31%13%5%1
288
16th to endDay
23%15%38%16%41
331
June1st to 15thDay
28%11%29%19%10%
480
16th to endDay
24%7%33%23%9%
468
July1st to 15thDay
17%441%21%12%1
305
16th to endDay
17%5%35%24%13%3
326
August1st to 15thDay
16%7%32%26%14%1
313
16th to endDay
16%9%25%28%15%4
332
September1st to 15thDay
15%8%32%24%13%4
315
16th to endDay
17%8%31%19%14%8%
283
October1st to 15thDay
22%15%21%21%14%4
242
16th to endDay
27%13%32%20%5%1
240
November1st to 15thDay
22%15%27%21%8%3
235
16th to endDay
25%23%22%21%5%1
240
December1st to 15thDay
27%13%39%16%4
99
16th to endDay
35%26%29%7%
64
January1st to 15thNight
21%20%35%19%2
720
16th to endNight
23%20%35%16%2
768
February1st to 15thNight
19%20%38%18%2
704
16th to endNight
21%19%35%18%4
631
March1st to 15thNight
26%18%35%16%3
720
16th to endNight
20%18%32%21%6%
768
April1st to 15thNight
25%16%35%18%4
691
16th to endNight
26%12%29%25%5%
540
May1st to 15thNight
26%9%32%25%5%
540
16th to endNight
28%7%29%29%5%
442
June1st to 15thNight
28%7%24%29%9%
360
16th to endNight
20%331%35%8%
360
July1st to 15thNight
22%222%39%13%1
340
16th to endNight
18%225%39%14%
376
August1st to 15thNight
15%327%38%14%
537
16th to endNight
15%328%33%17%1
604
September1st to 15thNight
16%5%31%30%14%1
720
16th to endNight
14%7%31%26%16%3
689
October1st to 15thNight
24%9%28%25%11%1
660
16th to endNight
24%13%36%19%5%
704
November1st to 15thNight
23%11%28%26%8%1
700
16th to endNight
20%17%31%21%8%
735
December1st to 15thNight
26%16%37%15%4
750
16th to endNight
29%19%32%16%2
788
Page generated at 2017-09-24 09:15:46. Version ac04

Copyright 2017 A. Danko


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