Bodie
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Bodie clear sky chart from 2005-11-06 to 2024-01-13.

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
67%
23503
32%
74546
27%
23473
74%
23473
48%
35865

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
58%
756
28%
2646
22%
756
69%
756
38%
1313
January11th to 20thNight
65%
728
27%
2521
25%
728
73%
728
42%
1191
January21st to endNight
60%
792
32%
2574
29%
792
68%
792
37%
1363
February1st to 10thNight
62%
720
31%
2248
28%
720
70%
720
42%
1150
February11th to 20thNight
61%
700
32%
2099
29%
700
70%
700
47%
1054
February21st to endNight
57%
592
31%
1776
25%
592
68%
592
46%
891
March1st to 10thNight
56%
720
26%
2160
20%
720
66%
720
40%
1150
March11th to 20thNight
59%
720
28%
2070
21%
720
68%
720
46%
1070
March21st to endNight
53%
792
27%
1998
14%
792
62%
792
47%
1124
April1st to 10thNight
57%
720
27%
1800
14%
720
64%
720
45%
1019
April11th to 20thNight
55%
711
30%
1779
14%
711
62%
711
49%
974
April21st to endNight
62%
720
29%
1800
14%
720
67%
720
53%
962
May1st to 10thNight
56%
588
30%
1668
18%
588
61%
588
45%
871
May11th to 20thNight
62%
511
30%
1574
24%
511
65%
511
48%
748
May21st to endNight
66%
388
27%
1552
26%
388
74%
388
36%
735
June1st to 10thNight
74%
360
30%
1440
33%
360
80%
360
43%
615
June11th to 20thNight
72%
360
36%
1440
38%
360
83%
360
61%
498
June21st to endNight
78%
360
34%
1440
40%
360
85%
360
57%
528
July1st to 10thNight
87%
350
35%
1400
43%
350
91%
350
66%
480
July11th to 20thNight
81%
348
34%
1392
42%
348
83%
348
51%
549
July21st to endNight
83%
424
36%
1517
41%
401
83%
401
44%
683
August1st to 10thNight
78%
648
33%
1713
24%
645
80%
645
60%
855
August11th to 20thNight
80%
712
35%
1780
21%
712
82%
712
70%
857
August21st to endNight
82%
792
42%
1980
26%
792
83%
792
73%
932
September1st to 10thNight
83%
720
44%
1800
30%
720
85%
720
76%
825
September11th to 20thNight
77%
720
43%
1872
31%
720
82%
720
67%
891
September21st to endNight
76%
720
44%
1980
36%
720
84%
720
67%
896
October1st to 10thNight
74%
720
36%
2049
31%
720
81%
720
59%
976
October11th to 20thNight
77%
720
40%
2160
40%
720
84%
720
65%
916
October21st to endNight
73%
792
42%
2451
39%
792
82%
792
62%
1034
November1st to 10thNight
72%
740
35%
2405
34%
740
80%
740
56%
1044
November11th to 20thNight
71%
760
36%
2470
33%
760
79%
760
52%
1096
November21st to endNight
68%
760
36%
2470
32%
760
77%
760
51%
1123
December1st to 10thNight
62%
760
27%
2597
24%
760
70%
760
43%
1244
December11th to 20thNight
56%
758
26%
3166
25%
758
64%
758
29%
1651
December21st to endNight
50%
821
17%
4759
21%
817
59%
817
19%
2557

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
232442445%7%63%
74801
Night
132432445%7%65%
74943
TransparencyDay
20%5%9%20%26%20%
74507
Night
18%5%10%23%27%16%
74759
SeeingDay
8%11%21%28%22%9%
13962
Night
4418%42%25%7%
23529

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 10thDay
13143247%7%11%56%
1519
11th to 20thDay
214435%7%6%8%59%
1478
21st to endDay
25%26%5%346%6%9%52%
1782
February1st to 10thDay
1415%32445%9%62%
1710
11th to 20thDay
1325%5%345%6%11%56%
1750
21st to endDay
3245%35%5%6%7%60%
1480
March1st to 10thDay
1326%5%445%7%9%53%
1800
11th to 20thDay
1325%5%36%7%7%10%53%
1887
21st to endDay
132442446%10%58%
2358
April1st to 10thDay
2325%435%46%7%57%
2160
11th to 20thDay
13145%3445%8%61%
2129
21st to endDay
2424424447%63%
2160
May1st to 10thDay
342443335%8%61%
2290
11th to 20thDay
45%2443346%7%59%
2318
21st to endDay
47%35%5%3445%7%52%
2723
June1st to 10thDay
34245%345%5%7%59%
2520
11th to 20thDay
2212223345%74%
2520
21st to endDay
332332433471%
2520
July1st to 10thDay
3313323345%69%
2520
11th to 20thDay
4424333346%64%
2520
21st to endDay
6%435%435%45%6%58%
2706
August1st to 10thDay
432342445%466%
2217
11th to 20thDay
321342333471%
2122
21st to endDay
321221223377%
2376
September1st to 10thDay
231322333375%
2160
11th to 20thDay
321322234473%
2088
21st to endDay
2213311335%76%
1980
October1st to 10thDay
3323423336%70%
1908
11th to 20thDay
2312322346%73%
1800
21st to endDay
2212312437%73%
1904
November1st to 10thDay
122442335%8%66%
1674
11th to 20thDay
121232335%10%68%
1710
21st to endDay
12134335%5%12%62%
1710
December1st to 10thDay
13133345%6%9%63%
1580
11th to 20thDay
25%47%6%45%6%6%9%45%
1928
21st to endDay
16%37%6%45%6%7%11%46%
2794
January1st to 10thNight
1425%4345%6%9%55%
2646
11th to 20thNight
13134346%7%9%59%
2521
21st to endNight
25%25%5%345%7%9%54%
2574
February1st to 10thNight
325%435%6%5%8%59%
2248
11th to 20thNight
142442446%11%59%
2098
21st to endNight
1425%32446%9%60%
1776
March1st to 10thNight
426%5%35%5%6%9%56%
2160
11th to 20thNight
1233425%5%7%11%58%
2070
21st to endNight
1436%32445%8%60%
1998
April1st to 10thNight
2324435%45%8%60%
1800
11th to 20thNight
1413434347%65%
1779
21st to endNight
2423323345%70%
1800
May1st to 10thNight
25%24333447%63%
1668
11th to 20thNight
432322336%8%65%
1573
21st to endNight
45%24424436%61%
1552
June1st to 10thNight
321332445%7%66%
1440
11th to 20thNight
2112212326%79%
1440
21st to endNight
221232322379%
1440
July1st to 10thNight
111121235%5%78%
1440
11th to 20thNight
3323323345%70%
1440
21st to endNight
4324433445%65%
1606
August1st to 10thNight
3223312345%72%
1722
11th to 20thNight
221221223479%
1780
21st to endNight
21221232480%
1980
September1st to 10thNight
11221123482%
1800
11th to 20thNight
131222223478%
1872
21st to endNight
2312211225%79%
1980
October1st to 10thNight
331332223474%
2049
11th to 20thNight
1113112337%76%
2160
21st to endNight
1212312236%76%
2451
November1st to 10thNight
121231335%8%71%
2405
11th to 20thNight
121332445%8%68%
2470
21st to endNight
132332335%10%65%
2470
December1st to 10thNight
132333446%9%61%
2597
11th to 20thNight
1435%435%6%9%12%47%
3276
21st to endNight
16%37%7%46%6%8%10%43%
4862

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
19%8%19%29%20%5%
1519
11th to 20thDay
21%8%14%23%24%11%
1478
21st to endDay
28%7%12%20%24%9%
1782
February1st to 10thDay
19%6%12%26%25%12%
1710
11th to 20thDay
22%6%10%24%28%10%
1760
21st to endDay
21%6%13%27%26%6%
1480
March1st to 10thDay
24%6%14%27%21%7%
1800
11th to 20thDay
22%8%15%22%24%8%
1887
21st to endDay
21%7%18%30%19%5%
2358
April1st to 10thDay
24%7%14%26%20%9%
2160
11th to 20thDay
21%6%12%26%26%10%
2132
21st to endDay
21%5%13%30%25%6%
2160
May1st to 10thDay
23%48%28%29%8%
2290
11th to 20thDay
25%5%9%25%28%7%
2321
21st to endDay
31%6%10%21%26%7%
2724
June1st to 10thDay
25%48%18%31%13%
2520
11th to 20thDay
13%46%17%34%27%
2520
21st to endDay
19%2310%29%37%
2520
July1st to 10thDay
18%2311%19%46%
2451
11th to 20thDay
21%35%10%20%41%
2445
21st to endDay
26%46%9%20%34%
2555
August1st to 10thDay
21%4411%17%43%
2201
11th to 20thDay
17%439%26%42%
2122
21st to endDay
14%228%30%45%
2376
September1st to 10thDay
14%348%25%46%
2160
11th to 20thDay
14%3416%32%30%
2088
21st to endDay
13%3317%34%30%
1980
October1st to 10thDay
17%45%16%30%28%
1908
11th to 20thDay
15%3420%34%25%
1800
21st to endDay
13%35%23%37%19%
1904
November1st to 10thDay
18%410%22%31%16%
1674
11th to 20thDay
13%5%11%23%35%13%
1710
21st to endDay
17%5%11%25%30%13%
1710
December1st to 10thDay
16%8%14%25%26%11%
1580
11th to 20thDay
29%11%12%23%17%8%
1928
21st to endDay
28%9%16%21%20%5%
2794
January1st to 10thNight
24%6%15%28%22%6%
2646
11th to 20thNight
19%7%14%27%23%10%
2521
21st to endNight
26%6%11%24%24%9%
2574
February1st to 10thNight
22%6%11%26%24%11%
2248
11th to 20thNight
20%5%10%27%28%9%
2099
21st to endNight
20%5%14%30%24%7%
1776
March1st to 10thNight
24%6%15%25%23%7%
2160
11th to 20thNight
20%6%15%26%26%7%
2070
21st to endNight
22%6%18%30%20%4
1998
April1st to 10thNight
22%6%14%31%19%7%
1800
11th to 20thNight
20%5%11%29%26%9%
1779
21st to endNight
18%414%36%24%4
1800
May1st to 10thNight
22%5%10%26%30%6%
1668
11th to 20thNight
18%5%10%33%28%6%
1574
21st to endNight
24%5%11%28%25%6%
1552
June1st to 10thNight
17%6%8%25%33%10%
1440
11th to 20thNight
10%37%18%38%24%
1440
21st to endNight
13%2316%31%34%
1440
July1st to 10thNight
10%25%13%27%43%
1400
11th to 20thNight
17%25%14%27%36%
1392
21st to endNight
22%36%13%22%34%
1517
August1st to 10thNight
16%46%13%21%41%
1713
11th to 20thNight
12%2412%31%38%
1780
21st to endNight
10%2311%34%40%
1980
September1st to 10thNight
8%2312%32%42%
1800
11th to 20thNight
12%36%18%32%29%
1872
21st to endNight
12%2418%36%28%
1980
October1st to 10thNight
16%37%18%35%20%
2049
11th to 20thNight
10%36%23%37%21%
2160
21st to endNight
12%36%24%37%19%
2451
November1st to 10thNight
13%5%10%28%31%13%
2405
11th to 20thNight
14%5%10%28%33%10%
2470
21st to endNight
17%412%26%30%12%
2470
December1st to 10thNight
19%7%14%24%27%9%
2597
11th to 20thNight
25%10%14%25%22%5%
3276
21st to endNight
31%11%12%19%21%6%
4862

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
9%10%20%39%16%6%
180
11th to 20thDay
5%9%24%30%23%9%
186
21st to endDay
7%10%19%31%26%7%
374
February1st to 10thDay
7%11%20%33%18%11%
380
11th to 20thDay
6%15%21%34%18%6%
415
21st to endDay
7%16%26%32%15%5%
346
March1st to 10thDay
6%13%24%37%15%5%
420
11th to 20thDay
9%16%24%25%18%8%
420
21st to endDay
9%16%26%30%18%1
462
April1st to 10thDay
11%17%22%28%18%5%
420
11th to 20thDay
13%17%22%23%19%6%
412
21st to endDay
11%18%20%22%19%10%
420
May1st to 10thDay
13%12%24%26%18%6%
423
11th to 20thDay
16%17%22%19%15%10%
448
21st to endDay
16%13%17%22%20%13%
485
June1st to 10thDay
10%12%23%24%18%12%
450
11th to 20thDay
9%17%23%26%16%9%
450
21st to endDay
6%12%25%27%20%10%
450
July1st to 10thDay
5%9%22%30%22%12%
446
11th to 20thDay
7%7%16%30%26%14%
444
21st to endDay
10%317%31%22%15%
487
August1st to 10thDay
8%8%21%28%25%11%
447
11th to 20thDay
6%5%22%29%25%13%
437
21st to endDay
5%6%23%31%26%10%
495
September1st to 10thDay
6%7%20%30%26%11%
450
11th to 20thDay
9%11%19%29%25%6%
450
21st to endDay
8%8%20%31%26%7%
450
October1st to 10thDay
8%14%22%26%21%10%
450
11th to 20thDay
7%9%23%25%27%10%
450
21st to endDay
8%9%22%24%27%10%
419
November1st to 10thDay
7%7%20%27%25%13%
270
11th to 20thDay
48%13%33%28%14%
270
21st to endDay
37%17%31%30%11%
270
December1st to 10thDay
8%6%17%32%24%13%
208
11th to 20thDay
7%9%15%37%19%12%
180
21st to endDay
12%8%21%29%21%9%
198
January1st to 10thNight
46%23%38%19%10%
760
11th to 20thNight
26%20%45%19%8%
728
21st to endNight
6%422%40%21%7%
792
February1st to 10thNight
26%21%42%23%6%
720
11th to 20thNight
45%23%39%22%7%
704
21st to endNight
37%27%44%15%5%
592
March1st to 10thNight
46%26%43%15%6%
720
11th to 20thNight
46%23%37%21%9%
720
21st to endNight
38%28%40%17%3
792
April1st to 10thNight
47%23%43%19%4
720
11th to 20thNight
49%25%37%18%6%
711
21st to endNight
6%8%19%40%22%6%
720
May1st to 10thNight
7%6%25%37%21%5%
588
11th to 20thNight
6%6%20%40%24%3
511
21st to endNight
8%415%36%32%5%
389
June1st to 10thNight
4413%46%30%4
360
11th to 20thNight
3319%45%28%3
360
21st to endNight
3112%53%27%4
360
July1st to 10thNight
28%52%33%5%
350
11th to 20thNight
415%50%38%3
348
21st to endNight
41344%40%8%
424
August1st to 10thNight
419%38%40%8%
648
11th to 20thNight
4110%41%37%8%
712
21st to endNight
3110%42%37%7%
792
September1st to 10thNight
329%40%38%9%
720
11th to 20thNight
3213%41%33%8%
720
21st to endNight
3314%38%32%10%
720
October1st to 10thNight
4314%44%28%8%
720
11th to 20thNight
4411%41%31%9%
720
21st to endNight
3315%38%28%13%
792
November1st to 10thNight
3217%43%26%9%
740
11th to 20thNight
35%16%45%24%7%
760
21st to endNight
26%17%42%27%6%
760
December1st to 10thNight
3423%44%19%6%
760
11th to 20thNight
45%26%41%19%5%
760
21st to endNight
38%27%43%15%3
836
Page generated at 2024-01-09 22:25:01. Version ac07

Copyright 2024 Attilla Danko


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