Lake Mineral Wells Trailway
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Lake Mineral Wells Trailway 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
48%
24009
30%
74267
20%
23954
59%
23954
40%
39359

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
37%
948
34%
2458
13%
946
50%
946
44%
1371
January11th to 20thNight
40%
915
31%
2379
12%
915
52%
915
42%
1362
January21st to endNight
37%
990
35%
2574
14%
990
50%
990
39%
1498
February1st to 10thNight
32%
720
31%
2160
11%
720
47%
720
34%
1216
February11th to 20thNight
29%
704
25%
2098
10%
700
41%
700
34%
1203
February21st to endNight
22%
592
31%
1776
8%
592
41%
592
31%
1016
March1st to 10thNight
29%
583
27%
2023
12%
583
45%
583
28%
1156
March11th to 20thNight
30%
540
26%
1980
14%
540
46%
540
29%
1070
March21st to endNight
31%
594
28%
2178
16%
594
48%
594
32%
1115
April1st to 10thNight
28%
540
27%
1980
13%
540
47%
540
32%
992
April11th to 20thNight
27%
533
26%
1869
13%
533
46%
533
32%
979
April21st to endNight
32%
540
31%
1620
15%
540
53%
540
40%
884
May1st to 10thNight
34%
540
28%
1620
16%
540
52%
540
35%
928
May11th to 20thNight
42%
531
22%
1594
17%
531
51%
531
37%
917
May21st to endNight
49%
583
25%
1745
18%
582
61%
582
41%
959
June1st to 10thNight
68%
540
24%
1620
23%
540
75%
540
51%
791
June11th to 20thNight
64%
540
27%
1620
27%
540
71%
540
55%
768
June21st to endNight
72%
540
28%
1620
30%
540
76%
540
51%
799
July1st to 10thNight
75%
525
24%
1575
24%
525
80%
525
46%
838
July11th to 20thNight
83%
522
35%
1566
38%
522
88%
522
63%
698
July21st to endNight
87%
591
33%
1673
39%
558
88%
558
61%
748
August1st to 10thNight
87%
537
37%
1601
42%
534
91%
534
66%
700
August11th to 20thNight
78%
534
34%
1645
36%
534
80%
534
44%
838
August21st to endNight
84%
594
30%
2042
36%
594
85%
594
48%
949
September1st to 10thNight
75%
540
27%
1980
32%
540
78%
540
39%
975
September11th to 20thNight
67%
540
25%
1980
27%
540
70%
540
31%
1097
September21st to endNight
71%
540
37%
1980
37%
540
77%
540
45%
901
October1st to 10thNight
65%
540
39%
1980
34%
540
74%
540
48%
872
October11th to 20thNight
52%
684
37%
2124
21%
684
64%
684
46%
1066
October21st to endNight
45%
792
35%
2376
19%
792
55%
792
41%
1254
November1st to 10thNight
50%
761
32%
2241
17%
761
61%
761
45%
1185
November11th to 20thNight
47%
950
33%
2470
15%
950
56%
950
48%
1339
November21st to endNight
37%
950
32%
2470
13%
950
48%
950
37%
1505
December1st to 10thNight
41%
950
36%
2470
15%
950
54%
950
43%
1409
December11th to 20thNight
35%
949
32%
2859
13%
948
47%
948
32%
1681
December21st to endNight
34%
1037
19%
4321
11%
1026
46%
1026
26%
2280

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
9%42442445%7%54%
74910
Night
9%42332345%7%59%
74862
TransparencyDay
30%410%24%23%9%
74635
Night
26%49%23%26%13%
74657
SeeingDay
11%6%22%30%23%8%
13992
Night
11%6%30%37%15%1
24021

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 10thDay
10%5%23423246%58%
1707
11th to 20thDay
11%415%323337%57%
1643
21st to endDay
12%5%14423445%57%
1796
February1st to 10thDay
13%5%24324346%54%
1800
11th to 20thDay
14%7%24424445%50%
1749
21st to endDay
19%5%2331222456%
1480
March1st to 10thDay
17%5%35%424446%48%
1935
11th to 20thDay
12%5%2443444452%
1980
21st to endDay
12%42432445%6%53%
2178
April1st to 10thDay
9%425%43445%7%53%
1980
11th to 20thDay
12%5%25%434446%53%
2034
21st to endDay
11%424425%45%6%54%
2340
May1st to 10thDay
11%435%42345%7%52%
2340
11th to 20thDay
11%5%25%435%6%6%7%46%
2302
21st to endDay
10%5%25%5%36%6%7%8%43%
2531
June1st to 10thDay
6%313435%6%6%8%55%
2340
11th to 20thDay
4323435%6%6%9%57%
2340
21st to endDay
5%32442446%8%58%
2340
July1st to 10thDay
6%325%6%46%6%7%10%46%
2340
11th to 20thDay
32134245%5%9%63%
2340
21st to endDay
22145%45%6%7%10%53%
2546
August1st to 10thDay
2112335%5%7%9%62%
2328
11th to 20thDay
6%425%5%35%5%7%9%49%
2251
21st to endDay
4314335%5%7%9%56%
2312
September1st to 10thDay
9%4145%2445%7%55%
1980
11th to 20thDay
11%425%6%25%5%6%6%47%
1980
21st to endDay
8%32433445%7%58%
1980
October1st to 10thDay
5%314433347%62%
1980
11th to 20thDay
10%314312345%64%
1818
21st to endDay
12%42432223363%
1980
November1st to 10thDay
10%5%23313345%60%
1834
11th to 20thDay
6%413313447%64%
1710
21st to endDay
14%424323445%55%
1710
December1st to 10thDay
11%7%2432445%6%53%
1710
11th to 20thDay
11%6%36%5%2445%5%50%
2161
21st to endDay
15%6%24423345%52%
3135
January1st to 10thNight
9%424413346%61%
2458
11th to 20thNight
12%424422245%61%
2379
21st to endNight
11%5%33324336%59%
2574
February1st to 10thNight
11%6%24423335%57%
2160
11th to 20thNight
13%6%2342245%6%53%
2098
21st to endNight
16%5%22323345%55%
1776
March1st to 10thNight
13%5%25%43435%6%50%
2023
11th to 20thNight
12%6%24323446%53%
1980
21st to endNight
8%42442446%7%57%
2178
April1st to 10thNight
7%5%24424447%57%
1980
11th to 20thNight
10%42332446%6%55%
1869
21st to endNight
10%32342335%8%57%
1620
May1st to 10thNight
8%5%243245%5%7%53%
1620
11th to 20thNight
9%6%2442446%8%52%
1593
21st to endNight
8%3143335%5%9%54%
1745
June1st to 10thNight
321441446%11%60%
1620
11th to 20thNight
21123245%6%11%64%
1620
21st to endNight
3213324448%66%
1620
July1st to 10thNight
4213425%7%8%11%53%
1620
11th to 20thNight
2212222347%74%
1620
21st to endNight
111222447%11%65%
1772
August1st to 10thNight
21112233410%71%
1611
11th to 20thNight
5%4233345%6%10%57%
1645
21st to endNight
3213425%46%11%60%
2042
September1st to 10thNight
7%32442345%7%59%
1980
11th to 20thNight
8%5%35%5%345%6%6%51%
1980
21st to endNight
6%21332345%7%63%
1980
October1st to 10thNight
5%31332436%7%64%
1980
11th to 20thNight
9%413312335%66%
2124
21st to endNight
13%41331223464%
2376
November1st to 10thNight
8%42332344464%
2241
11th to 20thNight
5%324334345%65%
2470
21st to endNight
14%5%24323335%55%
2470
December1st to 10thNight
10%5%24323446%59%
2470
11th to 20thNight
10%6%3443345%6%53%
3036
21st to endNight
14%6%23423335%56%
4532

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
29%26%22%30%11%
1708
11th to 20thDay
30%36%22%29%10%
1643
21st to endDay
30%35%20%29%13%
1796
February1st to 10thDay
33%36%20%24%13%
1800
11th to 20thDay
37%37%20%21%11%
1759
21st to endDay
36%2414%25%19%
1480
March1st to 10thDay
38%36%18%22%13%
1935
11th to 20thDay
36%39%17%25%9%
1980
21st to endDay
32%5%10%23%20%10%
2178
April1st to 10thDay
32%410%22%19%12%
1980
11th to 20thDay
34%49%23%19%13%
2034
21st to endDay
32%39%22%27%7%
2340
May1st to 10thDay
33%410%24%20%9%
2340
11th to 20thDay
36%5%13%22%21%3
2306
21st to endDay
37%6%15%24%15%2
2531
June1st to 10thDay
25%7%17%29%19%4
2340
11th to 20thDay
23%5%14%30%22%6%
2340
21st to endDay
24%6%11%26%26%7%
2340
July1st to 10thDay
31%6%19%27%16%2
2276
11th to 20thDay
18%5%13%33%27%4
2271
21st to endDay
21%7%15%36%20%1
2405
August1st to 10thDay
17%6%14%33%26%4
2314
11th to 20thDay
30%5%15%27%21%2
2251
21st to endDay
22%6%13%32%22%5%
2312
September1st to 10thDay
29%48%22%27%9%
1980
11th to 20thDay
36%6%9%20%20%9%
1980
21st to endDay
25%5%7%22%28%13%
1980
October1st to 10thDay
22%311%24%23%17%
1980
11th to 20thDay
25%36%19%28%20%
1818
21st to endDay
28%25%20%27%18%
1980
November1st to 10thDay
27%38%23%27%12%
1834
11th to 20thDay
22%310%22%31%14%
1710
21st to endDay
32%35%21%25%13%
1710
December1st to 10thDay
33%36%23%26%8%
1710
11th to 20thDay
37%38%15%26%12%
2159
21st to endDay
36%3423%22%11%
3135
January1st to 10thNight
26%26%21%30%14%
2458
11th to 20thNight
28%26%20%30%13%
2379
21st to endNight
29%3417%29%17%
2574
February1st to 10thNight
32%37%18%24%16%
2160
11th to 20thNight
33%37%17%28%13%
2098
21st to endNight
33%36%17%21%21%
1776
March1st to 10thNight
36%46%17%22%15%
2023
11th to 20thNight
32%48%20%23%11%
1980
21st to endNight
28%5%11%21%26%9%
2178
April1st to 10thNight
28%410%22%20%16%
1980
11th to 20thNight
30%411%20%20%16%
1869
21st to endNight
27%410%22%30%7%
1620
May1st to 10thNight
30%6%9%24%22%10%
1620
11th to 20thNight
31%415%24%21%4
1594
21st to endNight
26%6%18%27%21%2
1746
June1st to 10thNight
19%5%17%34%20%6%
1620
11th to 20thNight
15%6%14%35%23%8%
1620
21st to endNight
19%5%12%27%29%9%
1620
July1st to 10thNight
22%7%16%34%17%4
1575
11th to 20thNight
12%49%36%31%8%
1566
21st to endNight
14%318%37%26%2
1673
August1st to 10thNight
10%410%37%31%7%
1601
11th to 20thNight
23%6%13%31%23%6%
1645
21st to endNight
19%5%14%32%25%6%
2042
September1st to 10thNight
25%5%10%23%28%10%
1980
11th to 20thNight
33%6%11%19%21%11%
1980
21st to endNight
22%37%24%29%17%
1980
October1st to 10thNight
20%310%26%23%19%
1980
11th to 20thNight
23%37%16%27%23%
2124
21st to endNight
27%25%18%29%20%
2376
November1st to 10thNight
26%37%21%26%17%
2241
11th to 20thNight
22%36%23%29%17%
2470
21st to endNight
33%36%16%28%14%
2470
December1st to 10thNight
28%37%24%25%13%
2470
11th to 20thNight
33%35%17%28%14%
3037
21st to endNight
33%35%18%27%14%
4532

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
16%14%34%27%7%
270
11th to 20thDay
14%15%34%27%7%2
248
21st to endDay
17%9%44%20%10%1
264
February1st to 10thDay
21%11%36%25%7%
240
11th to 20thDay
25%10%40%20%4
240
21st to endDay
25%12%39%20%4
198
March1st to 10thDay
20%17%31%28%5%
240
11th to 20thDay
18%17%30%28%5%2
240
21st to endDay
16%13%44%20%5%2
264
April1st to 10thDay
15%15%38%22%10%
240
11th to 20thDay
16%13%43%21%7%
312
21st to endDay
13%13%42%22%9%1
600
May1st to 10thDay
11%9%36%34%8%1
603
11th to 20thDay
16%429%34%13%3
625
21st to endDay
14%427%36%14%4
679
June1st to 10thDay
7%213%42%28%8%
630
11th to 20thDay
4119%44%27%6%
630
21st to endDay
4213%38%32%11%
630
July1st to 10thDay
6%17%33%36%17%
621
11th to 20thDay
2433%45%15%
618
21st to endDay
21329%48%17%
684
August1st to 10thDay
21433%44%15%
626
11th to 20thDay
7%2431%42%15%
565
21st to endDay
6%1430%35%25%
431
September1st to 10thDay
7%1121%41%30%
270
11th to 20thDay
5%15%27%41%21%
270
21st to endDay
12%17%27%34%18%
270
October1st to 10thDay
3119%37%30%10%
270
11th to 20thDay
10%6%31%33%16%4
270
21st to endDay
23%7%25%25%18%2
297
November1st to 10thDay
16%433%31%13%3
270
11th to 20thDay
11%10%28%31%17%3
270
21st to endDay
18%13%36%21%10%1
270
December1st to 10thDay
16%7%33%30%11%2
270
11th to 20thDay
12%10%40%28%9%
270
21st to endDay
20%11%36%24%9%1
297
January1st to 10thNight
11%8%39%32%10%
950
11th to 20thNight
14%11%32%37%7%
915
21st to endNight
14%12%34%33%8%
990
February1st to 10thNight
15%11%39%30%5%1
720
11th to 20thNight
15%11%42%29%3
704
21st to endNight
21%12%43%22%2
592
March1st to 10thNight
14%10%43%28%4
583
11th to 20thNight
15%10%42%27%5%
540
21st to endNight
9%12%45%30%4
594
April1st to 10thNight
9%12%47%26%5%
540
11th to 20thNight
12%10%47%26%5%
533
21st to endNight
11%9%47%27%6%
540
May1st to 10thNight
9%8%46%31%6%1
540
11th to 20thNight
11%5%37%32%14%1
531
21st to endNight
7%334%39%15%1
584
June1st to 10thNight
3319%49%23%2
540
11th to 20thNight
2228%55%14%
540
21st to endNight
3118%48%26%3
540
July1st to 10thNight
5%112%43%34%5%
525
11th to 20thNight
3110%50%35%2
522
21st to endNight
25%51%39%3
591
August1st to 10thNight
117%50%39%2
537
11th to 20thNight
416%47%37%5%
534
21st to endNight
415%45%40%6%
594
September1st to 10thNight
8%17%42%38%4
540
11th to 20thNight
10%110%41%35%3
540
21st to endNight
8%115%44%29%3
540
October1st to 10thNight
6%322%44%24%1
540
11th to 20thNight
11%5%27%42%14%1
684
21st to endNight
15%8%29%33%14%1
792
November1st to 10thNight
10%432%39%15%1
761
11th to 20thNight
8%7%34%37%13%1
950
21st to endNight
18%8%34%31%9%1
950
December1st to 10thNight
14%7%35%37%7%1
950
11th to 20thNight
17%9%34%34%6%
950
21st to endNight
15%8%38%31%8%
1045
Page generated at 2024-01-10 18:35:21. Version ac07

Copyright 2024 Attilla Danko


Lake Mineral Wells Trailway Clear Sky Chart |Charts Home