Young's Pond
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Young's Pond clear sky chart from 2005-11-06 to 2024-01-15.

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
33%
23080
18%
74614
10%
23038
44%
23038
22%
48109

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 10thNight
20%
760
22%
2649
8%
757
38%
757
20%
1582
January11th to 20thNight
20%
739
19%
2583
6%
739
36%
739
15%
1701
January21st to endNight
20%
792
22%
2722
8%
792
38%
792
20%
1642
February1st to 10thNight
19%
720
17%
2264
6%
720
32%
720
17%
1531
February11th to 20thNight
16%
703
21%
2100
5%
700
35%
700
21%
1392
February21st to endNight
18%
592
24%
1776
9%
592
37%
592
20%
1170
March1st to 10thNight
23%
720
21%
2160
8%
720
39%
720
24%
1365
March11th to 20thNight
26%
720
19%
2111
7%
720
39%
720
23%
1391
March21st to endNight
26%
792
22%
1980
7%
792
37%
792
26%
1358
April1st to 10thNight
30%
720
19%
1800
6%
720
36%
720
24%
1264
April11th to 20thNight
32%
711
18%
1775
5%
711
39%
711
28%
1228
April21st to endNight
30%
621
18%
1701
6%
621
37%
621
24%
1174
May1st to 10thNight
34%
540
13%
1620
6%
540
39%
540
18%
1155
May11th to 20thNight
31%
462
17%
1524
9%
462
39%
462
20%
1029
May21st to endNight
47%
388
13%
1551
14%
388
51%
388
18%
1003
June1st to 10thNight
42%
360
15%
1440
15%
360
51%
360
18%
916
June11th to 20thNight
52%
360
14%
1440
17%
360
57%
360
21%
880
June21st to endNight
55%
360
14%
1440
16%
360
61%
360
23%
854
July1st to 10thNight
57%
350
13%
1400
18%
350
59%
350
20%
882
July11th to 20thNight
62%
348
13%
1392
19%
348
63%
348
21%
851
July21st to endNight
57%
394
17%
1486
19%
372
61%
372
24%
879
August1st to 10thNight
60%
443
16%
1507
14%
441
62%
441
27%
898
August11th to 20thNight
57%
693
14%
1757
8%
693
58%
693
26%
1244
August21st to endNight
57%
792
18%
1980
10%
792
60%
792
34%
1305
September1st to 10thNight
48%
720
20%
1800
10%
720
52%
720
30%
1233
September11th to 20thNight
50%
720
25%
1930
16%
720
55%
720
35%
1170
September21st to endNight
45%
720
22%
1980
15%
720
52%
720
27%
1334
October1st to 10thNight
35%
720
16%
1994
11%
720
41%
720
22%
1390
October11th to 20thNight
38%
720
22%
2176
12%
720
50%
720
28%
1349
October21st to endNight
26%
792
17%
2574
8%
792
38%
792
20%
1709
November1st to 10thNight
35%
740
22%
2407
12%
740
49%
740
25%
1461
November11th to 20thNight
27%
760
24%
2470
12%
760
43%
760
23%
1524
November21st to endNight
27%
760
22%
2474
10%
760
43%
760
22%
1506
December1st to 10thNight
23%
760
18%
2660
7%
760
38%
760
17%
1738
December11th to 20thNight
21%
760
17%
3185
5%
759
35%
759
14%
1970
December21st to endNight
19%
828
13%
4806
6%
817
35%
817
10%
3031

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
17%6%245%3445%7%42%
74798
Night
18%7%35%43445%7%42%
74966
TransparencyDay
40%7%13%22%16%2
74503
Night
42%6%12%22%15%2
74795
SeeingDay
18%10%28%28%13%3
13927
Night
20%10%30%28%10%1
23089

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 10thDay
15%7%146%245%6%6%45%
1517
11th to 20thDay
18%8%345%345%6%7%37%
1472
21st to endDay
15%8%25%4335%5%7%43%
1629
February1st to 10thDay
18%8%25%5%35%5%5%7%37%
1694
11th to 20thDay
16%6%245%345%5%8%43%
1748
21st to endDay
22%8%35%5%3345%6%37%
1480
March1st to 10thDay
15%7%35%5%34447%43%
1797
11th to 20thDay
16%5%36%5%35%5%5%8%40%
1844
21st to endDay
20%7%35%5%2444440%
2376
April1st to 10thDay
18%7%25%43445%7%40%
2160
11th to 20thDay
19%5%345%34447%43%
2134
21st to endDay
21%435%5%3445%5%41%
2258
May1st to 10thDay
23%8%3442445%7%36%
2340
11th to 20thDay
19%6%2443445%8%40%
2385
21st to endDay
16%6%25%42446%8%44%
2725
June1st to 10thDay
19%5%25%5%345%6%9%36%
2520
11th to 20thDay
17%5%34445%5%5%9%39%
2520
21st to endDay
13%6%245%35%5%5%9%42%
2520
July1st to 10thDay
12%5%25%435%5%7%9%42%
2520
11th to 20thDay
12%5%245%36%5%6%9%43%
2520
21st to endDay
12%6%35%435%7%6%8%42%
2744
August1st to 10thDay
12%5%33445%6%6%9%42%
2404
11th to 20thDay
13%5%246%345%6%8%44%
2139
21st to endDay
12%6%35%5%345%6%9%43%
2376
September1st to 10thDay
14%5%25%5%345%5%6%46%
2160
11th to 20thDay
13%424433446%53%
2030
21st to endDay
19%5%245%24446%43%
1980
October1st to 10thDay
22%7%34423446%41%
1962
11th to 20thDay
15%5%2442445%9%46%
1782
21st to endDay
19%7%244345%6%6%40%
1782
November1st to 10thDay
15%6%245%34345%49%
1671
11th to 20thDay
20%5%23323446%48%
1710
21st to endDay
17%6%33425%45%7%45%
1701
December1st to 10thDay
20%5%25%5%4446%6%38%
1520
11th to 20thDay
23%6%23323336%45%
1906
21st to endDay
20%11%36%5%34446%35%
2772
January1st to 10thNight
16%7%2442445%6%46%
2649
11th to 20thNight
22%7%25%434447%39%
2583
21st to endNight
15%8%35%424447%45%
2722
February1st to 10thNight
17%9%35%5%34445%40%
2264
11th to 20thNight
18%8%35%5%2345%7%40%
2098
21st to endNight
21%7%25%5%33435%41%
1776
March1st to 10thNight
18%6%2443445%6%44%
2150
11th to 20thNight
17%7%35%435%45%7%40%
2110
21st to endNight
18%8%35%43445%6%42%
1980
April1st to 10thNight
19%7%36%43445%7%38%
1800
11th to 20thNight
20%436%5%34447%42%
1775
21st to endNight
22%7%345%34345%40%
1701
May1st to 10thNight
23%7%35%5%35%45%7%32%
1620
11th to 20thNight
21%7%345%3445%8%37%
1523
21st to endNight
19%7%25%43436%8%38%
1550
June1st to 10thNight
20%5%36%5%35%446%39%
1440
11th to 20thNight
18%6%2443446%8%40%
1440
21st to endNight
14%7%2443446%9%43%
1440
July1st to 10thNight
13%5%35%5%36%5%6%9%40%
1440
11th to 20thNight
14%6%25%5%45%5%7%10%38%
1440
21st to endNight
13%5%25%5%26%5%7%10%40%
1574
August1st to 10thNight
8%5%26%5%35%6%8%9%42%
1517
11th to 20thNight
11%6%37%6%45%7%6%9%37%
1757
21st to endNight
14%5%35%5%3446%8%44%
1980
September1st to 10thNight
14%6%35%445%45%7%43%
1800
11th to 20thNight
15%5%24422446%53%
1930
21st to endNight
19%5%35%444446%43%
1980
October1st to 10thNight
21%7%25%433445%41%
1994
11th to 20thNight
16%5%25%423446%47%
2176
21st to endNight
22%7%24433445%40%
2574
November1st to 10thNight
13%6%25%5%3445%5%49%
2407
11th to 20thNight
20%6%34322346%47%
2470
21st to endNight
16%5%3443445%7%46%
2474
December1st to 10thNight
22%6%34435%45%5%39%
2660
11th to 20thNight
21%6%34434446%42%
3288
21st to endNight
22%10%36%434345%37%
4884

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 10thDay
39%5%12%28%14%3
1518
11th to 20thDay
44%6%15%19%13%2
1472
21st to endDay
40%5%12%25%15%3
1629
February1st to 10thDay
45%6%15%20%13%2
1694
11th to 20thDay
39%6%12%25%15%3
1757
21st to endDay
46%6%10%20%15%3
1480
March1st to 10thDay
41%5%15%22%14%3
1800
11th to 20thDay
41%5%13%23%16%2
1844
21st to endDay
46%6%8%17%18%5%
2376
April1st to 10thDay
41%7%11%20%16%4
2160
11th to 20thDay
41%6%11%21%19%3
2134
21st to endDay
42%7%10%21%16%4
2258
May1st to 10thDay
46%6%11%20%14%3
2340
11th to 20thDay
41%6%12%21%17%3
2389
21st to endDay
37%9%18%20%14%2
2725
June1st to 10thDay
42%9%13%23%12%1
2520
11th to 20thDay
40%9%14%23%13%1
2520
21st to endDay
36%9%15%26%14%1
2520
July1st to 10thDay
35%10%15%22%17%1
2450
11th to 20thDay
35%8%16%26%13%2
2445
21st to endDay
36%9%14%22%17%3
2591
August1st to 10thDay
34%9%17%26%14%1
2390
11th to 20thDay
35%9%16%25%14%1
2139
21st to endDay
35%9%12%24%19%2
2376
September1st to 10thDay
36%9%14%21%18%2
2160
11th to 20thDay
31%6%12%24%24%3
2030
21st to endDay
41%7%10%20%20%3
1980
October1st to 10thDay
43%6%9%22%16%3
1962
11th to 20thDay
35%5%14%28%17%1
1782
21st to endDay
42%7%11%21%15%3
1782
November1st to 10thDay
38%5%14%21%19%2
1671
11th to 20thDay
38%5%12%22%20%3
1710
21st to endDay
39%415%27%12%3
1701
December1st to 10thDay
46%6%15%18%14%1
1520
11th to 20thDay
42%316%19%18%2
1906
21st to endDay
51%7%11%22%9%1
2772
January1st to 10thNight
40%413%25%16%3
2649
11th to 20thNight
46%6%13%22%10%2
2583
21st to endNight
39%5%11%23%19%3
2722
February1st to 10thNight
47%6%12%22%12%2
2264
11th to 20thNight
44%5%10%21%15%4
2100
21st to endNight
46%48%23%15%4
1776
March1st to 10thNight
40%5%14%22%16%4
2160
11th to 20thNight
42%6%12%21%15%4
2111
21st to endNight
43%5%10%18%19%5%
1980
April1st to 10thNight
46%5%11%19%16%4
1800
11th to 20thNight
43%5%10%21%19%2
1775
21st to endNight
46%5%10%20%15%5%
1701
May1st to 10thNight
50%7%11%16%14%2
1620
11th to 20thNight
46%7%10%18%15%3
1524
21st to endNight
44%9%15%19%12%1
1551
June1st to 10thNight
45%6%11%19%17%2
1440
11th to 20thNight
40%7%15%25%11%1
1440
21st to endNight
38%7%15%25%14%
1440
July1st to 10thNight
40%10%14%20%14%2
1400
11th to 20thNight
38%9%15%26%10%1
1392
21st to endNight
37%8%17%22%14%2
1486
August1st to 10thNight
33%10%19%22%14%2
1507
11th to 20thNight
42%9%14%23%11%1
1757
21st to endNight
36%8%14%22%19%1
1980
September1st to 10thNight
40%8%10%25%16%2
1800
11th to 20thNight
33%5%11%22%25%3
1930
21st to endNight
43%6%9%19%21%3
1980
October1st to 10thNight
47%6%10%20%14%3
1994
11th to 20thNight
38%5%14%27%15%1
2176
21st to endNight
46%5%13%20%15%1
2574
November1st to 10thNight
37%6%12%21%19%4
2407
11th to 20thNight
41%411%24%18%3
2470
21st to endNight
38%5%13%29%12%2
2474
December1st to 10thNight
46%5%13%20%14%2
2660
11th to 20thNight
44%5%14%19%16%2
3288
21st to endNight
48%6%12%23%10%1
4884

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 10thDay
18%19%33%24%41
180
11th to 20thDay
17%26%37%17%31
168
21st to endDay
18%18%38%17%7%2
196
February1st to 10thDay
24%18%40%16%3
314
11th to 20thDay
19%20%41%19%2
416
21st to endDay
24%20%34%18%5%
346
March1st to 10thDay
15%19%35%26%4
420
11th to 20thDay
17%12%45%20%5%1
420
21st to endDay
22%16%38%18%6%1
462
April1st to 10thDay
22%13%36%20%8%1
420
11th to 20thDay
21%11%32%27%8%1
412
21st to endDay
24%11%33%26%42
420
May1st to 10thDay
25%12%31%23%7%2
423
11th to 20thDay
19%6%33%30%11%1
447
21st to endDay
19%6%20%31%20%5%
485
June1st to 10thDay
18%5%24%32%18%3
450
11th to 20thDay
16%5%24%37%15%2
450
21st to endDay
13%5%24%35%20%4
450
July1st to 10thDay
14%218%34%26%5%
445
11th to 20thDay
13%313%38%27%7%
444
21st to endDay
13%219%42%21%2
488
August1st to 10thDay
10%317%39%24%7%
446
11th to 20thDay
12%315%38%25%6%
439
21st to endDay
10%5%20%36%22%7%
495
September1st to 10thDay
16%424%27%21%8%
450
11th to 20thDay
14%424%31%19%8%
450
21st to endDay
20%7%28%28%14%3
450
October1st to 10thDay
26%8%21%24%16%5%
450
11th to 20thDay
15%11%28%31%14%2
441
21st to endDay
24%11%30%25%9%2
396
November1st to 10thDay
14%12%27%32%12%3
365
11th to 20thDay
21%16%33%22%7%
370
21st to endDay
17%18%29%27%9%
361
December1st to 10thDay
18%18%32%23%8%1
180
11th to 20thDay
25%21%29%20%4
180
21st to endDay
23%15%36%17%8%2
198
January1st to 10thNight
19%18%38%20%4
760
11th to 20thNight
27%16%34%21%3
739
21st to endNight
19%17%39%22%2
792
February1st to 10thNight
21%15%38%24%2
720
11th to 20thNight
23%15%42%19%2
703
21st to endNight
24%15%38%20%3
592
March1st to 10thNight
22%13%37%23%4
720
11th to 20thNight
20%11%38%24%6%1
720
21st to endNight
22%11%36%25%5%
792
April1st to 10thNight
23%11%33%28%6%
720
11th to 20thNight
21%7%35%29%7%
711
21st to endNight
23%6%33%29%7%1
621
May1st to 10thNight
24%9%28%28%10%1
540
11th to 20thNight
22%6%34%30%8%
462
21st to endNight
20%418%39%18%2
389
June1st to 10thNight
19%6%24%33%16%2
360
11th to 20thNight
19%318%43%16%1
360
21st to endNight
13%321%45%18%1
360
July1st to 10thNight
13%319%41%22%2
350
11th to 20thNight
12%315%45%22%3
348
21st to endNight
14%318%47%17%2
394
August1st to 10thNight
10%118%49%21%1
443
11th to 20thNight
13%217%40%25%3
693
21st to endNight
15%317%38%24%4
792
September1st to 10thNight
17%324%33%19%4
720
11th to 20thNight
17%423%32%19%5%
720
21st to endNight
20%5%23%32%17%2
720
October1st to 10thNight
24%8%27%25%13%3
720
11th to 20thNight
18%10%31%30%10%1
720
21st to endNight
26%11%33%22%8%
792
November1st to 10thNight
16%11%33%26%12%2
740
11th to 20thNight
21%15%33%24%7%1
760
21st to endNight
17%19%33%24%6%1
760
December1st to 10thNight
24%14%33%22%6%1
760
11th to 20thNight
24%16%34%22%4
760
21st to endNight
24%15%38%21%2
836
Page generated at 2024-01-12 07:31:47. Version ac07

Copyright 2024 Attilla Danko


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