Great Bend
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Great Bend clear sky chart from 2005-11-05 to 2017-12-02.

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
44%
16190
26%
47856
15%
16146
54%
16146
38%
26742

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
37%
900
30%
2327
13%
895
48%
895
39%
1361
January16th to endNight
39%
960
33%
2496
14%
960
51%
960
43%
1418
February1st to 15thNight
35%
780
21%
2190
9%
777
45%
777
32%
1356
February16th to endNight
33%
632
30%
1894
12%
632
48%
632
35%
1051
March1st to 15thNight
39%
627
26%
2067
15%
627
51%
627
34%
1121
March16th to endNight
30%
576
21%
2112
13%
576
42%
576
24%
1235
April1st to 15thNight
31%
539
21%
1873
13%
539
46%
539
30%
1031
April16th to endNight
32%
540
21%
1632
12%
540
46%
540
27%
1012
May1st to 15thNight
37%
539
20%
1620
15%
539
48%
539
29%
1001
May16th to endNight
46%
561
18%
1684
12%
561
54%
561
32%
997
June1st to 15thNight
48%
540
19%
1620
10%
540
55%
540
42%
863
June16th to endNight
57%
540
24%
1620
14%
540
65%
540
51%
800
July1st to 15thNight
65%
510
20%
1530
15%
510
69%
510
45%
811
July16th to endNight
68%
564
24%
1594
23%
531
72%
531
44%
851
August1st to 15thNight
69%
539
21%
1610
22%
536
73%
536
39%
887
August16th to endNight
65%
573
27%
1816
29%
573
70%
573
41%
967
September1st to 15thNight
53%
540
23%
1950
20%
540
63%
540
33%
1046
September16th to endNight
52%
537
32%
1980
27%
537
61%
537
36%
982
October1st to 15thNight
44%
585
31%
2025
23%
585
52%
585
33%
1062
October16th to endNight
45%
813
35%
2349
16%
813
57%
813
50%
1173
November1st to 15thNight
46%
950
32%
2470
14%
950
56%
950
50%
1338
November16th to endNight
44%
975
33%
2535
15%
975
54%
975
45%
1407
December1st to 15thNight
39%
910
26%
2366
12%
910
48%
910
37%
1425
December16th to endNight
37%
960
31%
2496
15%
960
48%
960
35%
1547

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
8%42442445%7%53%
48594
Night
7%42332335%7%55%
48052
Cloud CoverDay
8%42442345%7%53%
48592
Night
7%42332335%7%55%
48052
TransparencyDay
30%5%12%27%19%4
48292
Night
28%5%12%26%22%6%
47857
SeeingDay
10%7%28%34%16%3
6093
Night
9%7%33%36%11%
16195

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 15thDay
5%5%24313346%58%
1611
16th to endDay
7%425%323448%53%
1728
February1st to 15thDay
5%7%35%6%25%445%49%
1681
16th to endDay
6%5%2332335%7%56%
1580
March1st to 15thDay
7%6%3332445%7%51%
1893
16th to endDay
14%6%23423346%47%
2112
April1st to 15thDay
11%6%25%423346%49%
2072
16th to endDay
14%6%25%4245%45%42%
2328
May1st to 15thDay
11%42432435%7%51%
2331
16th to endDay
9%4245%245%6%9%44%
2430
June1st to 15thDay
6%313424447%55%
2340
16th to endDay
42123235%5%9%60%
2340
July1st to 15thDay
4325%5%25%5%7%9%47%
2340
16th to endDay
5%3144245%6%8%53%
2466
August1st to 15thDay
7%4144345%7%10%47%
2340
16th to endDay
6%314325%448%54%
2384
September1st to 15thDay
9%414424446%53%
2010
16th to endDay
8%313314446%57%
1980
October1st to 15thDay
12%323212246%57%
1923
16th to endDay
6%5%12212336%63%
1873
November1st to 15thDay
6%313323336%61%
1718
16th to endDay
8%41221123467%
1755
December1st to 15thDay
9%7%25%5%2335%6%50%
1631
16th to endDay
8%8%35%423336%49%
1728
January1st to 15thNight
6%5%34423235%58%
2327
16th to endNight
5%42431334461%
2496
February1st to 15thNight
7%7%35%5%24345%50%
2180
16th to endNight
7%42432335%5%55%
1894
March1st to 15thNight
8%42432345%7%53%
2067
16th to endNight
13%7%24313336%49%
2112
April1st to 15thNight
11%41421436%8%50%
1873
16th to endNight
14%5%2442335%7%46%
1632
May1st to 15thNight
12%5%2442345%6%48%
1619
16th to endNight
10%32332446%10%48%
1683
June1st to 15thNight
6%21232347%9%56%
1620
16th to endNight
21122135%5%12%60%
1620
July1st to 15thNight
42134245%6%11%54%
1620
16th to endNight
6%21331346%10%54%
1702
August1st to 15thNight
43235%2446%11%50%
1620
16th to endNight
5%213424446%59%
1816
September1st to 15thNight
8%42442335%7%52%
1950
16th to endNight
6%314323446%59%
1980
October1st to 15thNight
10%422312335%58%
2025
16th to endNight
6%31221224467%
2349
November1st to 15thNight
5%312313346%64%
2470
16th to endNight
7%412213336%61%
2535
December1st to 15thNight
8%5%24314346%54%
2366
16th to endNight
10%6%34313347%50%
2496

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
5%6%2431335%6%58%
1611
16th to endDay
7%424422447%54%
1728
February1st to 15thDay
5%7%35%5%44436%49%
1681
16th to endDay
6%5%2332345%7%56%
1580
March1st to 15thDay
7%6%2432445%7%51%
1893
16th to endDay
14%6%24323346%47%
2110
April1st to 15thDay
11%6%25%424346%49%
2072
16th to endDay
14%6%35%424446%42%
2328
May1st to 15thDay
11%42432345%6%51%
2331
16th to endDay
10%324425%46%9%45%
2430
June1st to 15thDay
6%31342445%7%55%
2340
16th to endDay
41123145%6%8%60%
2340
July1st to 15thDay
4325%5%35%5%6%10%47%
2340
16th to endDay
5%3243245%6%8%52%
2466
August1st to 15thDay
7%4144246%6%10%48%
2340
16th to endDay
6%31332445%8%54%
2384
September1st to 15thDay
9%424424446%53%
2010
16th to endDay
7%313324446%57%
1980
October1st to 15thDay
12%413312236%57%
1923
16th to endDay
7%412212336%63%
1873
November1st to 15thDay
6%313323345%61%
1718
16th to endDay
8%412212235%66%
1755
December1st to 15thDay
9%7%245%22446%50%
1631
16th to endDay
8%7%36%332337%48%
1728
January1st to 15thNight
6%6%25%423235%58%
2327
16th to endNight
5%425%32333461%
2496
February1st to 15thNight
7%7%34424446%50%
2180
16th to endNight
7%42441335%6%55%
1894
March1st to 15thNight
7%42442445%7%53%
2067
16th to endNight
13%7%34313336%49%
2112
April1st to 15thNight
10%42332345%7%50%
1873
16th to endNight
14%5%1432345%7%46%
1632
May1st to 15thNight
11%5%25%42345%6%48%
1619
16th to endNight
10%31332446%10%48%
1683
June1st to 15thNight
6%21332346%10%55%
1620
16th to endNight
21123135%7%11%59%
1620
July1st to 15thNight
321343446%10%54%
1620
16th to endNight
6%21232446%11%53%
1702
August1st to 15thNight
43145%145%7%10%50%
1620
16th to endNight
5%32432345%5%59%
1816
September1st to 15thNight
8%42442435%7%53%
1950
16th to endNight
6%214323445%59%
1980
October1st to 15thNight
11%413213335%58%
2025
16th to endNight
6%312212335%67%
2349
November1st to 15thNight
5%313213336%64%
2470
16th to endNight
8%412213336%61%
2535
December1st to 15thNight
8%5%23413447%54%
2366
16th to endNight
9%7%34312347%50%
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
26%414%33%18%2
1612
16th to endDay
29%414%31%16%3
1728
February1st to 15thDay
35%6%17%24%10%5%
1682
16th to endDay
26%315%27%19%6%
1580
March1st to 15thDay
31%5%12%24%21%5%
1893
16th to endDay
38%5%11%24%15%3
2112
April1st to 15thDay
35%5%11%27%15%4
2072
16th to endDay
41%5%10%27%13%1
2328
May1st to 15thDay
33%6%13%25%19%2
2331
16th to endDay
36%7%14%27%12%2
2434
June1st to 15thDay
27%6%16%26%17%5%
2340
16th to endDay
19%6%11%29%25%6%
2340
July1st to 15thDay
29%7%12%25%20%4
2201
16th to endDay
26%7%13%26%21%4
2311
August1st to 15thDay
29%7%18%24%14%5%
2326
16th to endDay
26%6%11%27%20%6%
2384
September1st to 15thDay
31%5%9%26%18%8%
2010
16th to endDay
26%5%9%30%22%4
1980
October1st to 15thDay
29%311%24%24%6%
1923
16th to endDay
23%29%28%28%7%
1873
November1st to 15thDay
23%410%24%29%6%
1718
16th to endDay
22%28%31%28%6%
1755
December1st to 15thDay
34%5%13%29%16%1
1631
16th to endDay
36%311%26%18%2
1728
January1st to 15thNight
30%210%29%22%3
2327
16th to endNight
26%310%30%23%5%
2496
February1st to 15thNight
36%414%24%14%5%
2190
16th to endNight
29%411%26%19%8%
1894
March1st to 15thNight
29%411%24%21%8%
2067
16th to endNight
37%411%23%18%4
2112
April1st to 15thNight
31%5%13%25%21%3
1873
16th to endNight
37%5%14%19%19%3
1632
May1st to 15thNight
35%7%12%23%18%4
1620
16th to endNight
30%8%19%25%13%2
1685
June1st to 15thNight
22%7%19%26%19%4
1620
16th to endNight
16%7%13%29%26%6%
1620
July1st to 15thNight
22%6%13%27%23%5%
1530
16th to endNight
23%6%14%30%20%4
1594
August1st to 15thNight
26%6%17%29%15%5%
1610
16th to endNight
25%5%10%27%23%6%
1816
September1st to 15thNight
30%5%11%25%17%9%
1950
16th to endNight
25%5%9%23%31%5%
1980
October1st to 15thNight
28%5%9%21%26%8%
2025
16th to endNight
20%28%26%31%10%
2349
November1st to 15thNight
21%39%24%29%10%
2470
16th to endNight
24%38%28%25%9%
2535
December1st to 15thNight
30%412%30%19%2
2366
16th to endNight
33%412%25%19%4
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
12%6%41%32%7%
90
16th to endDay
15%8%47%17%9%1
96
February1st to 15thDay
10%5%48%27%7%
90
16th to endDay
217%43%22%13%1
81
March1st to 15thDay
416%50%18%10%
90
16th to endDay
16%11%36%28%7%
96
April1st to 15thDay
13%17%36%25%5%1
191
16th to endDay
20%14%32%23%6%1
438
May1st to 15thDay
12%10%35%27%12%1
468
16th to endDay
15%9%30%29%11%3
517
June1st to 15thDay
7%6%28%37%16%3
495
16th to endDay
35%29%40%18%2
495
July1st to 15thDay
4218%45%23%4
475
16th to endDay
6%114%42%30%4
515
August1st to 15thDay
9%112%46%26%4
493
16th to endDay
8%121%39%25%3
424
September1st to 15thDay
4327%39%18%6%
165
16th to endDay
11%5%24%31%20%8%
135
October1st to 15thDay
10%7%37%30%13%1
135
16th to endDay
8%9%35%26%16%3
144
November1st to 15thDay
16%428%34%13%2
135
16th to endDay
13%9%40%22%12%
135
December1st to 15thDay
12%12%45%19%6%3
94
16th to endDay
21%11%45%18%2
96
January1st to 15thNight
9%9%38%34%7%
900
16th to endNight
7%8%40%35%7%
960
February1st to 15thNight
11%7%39%36%4
782
16th to endNight
8%12%41%32%4
632
March1st to 15thNight
9%12%35%35%6%
627
16th to endNight
16%12%39%25%5%
576
April1st to 15thNight
14%12%39%27%5%
539
16th to endNight
16%11%36%27%6%
540
May1st to 15thNight
13%8%35%33%7%
540
16th to endNight
12%8%30%33%13%1
563
June1st to 15thNight
5%6%36%36%13%
540
16th to endNight
2233%48%11%
540
July1st to 15thNight
4121%51%18%
510
16th to endNight
7%118%46%25%1
564
August1st to 15thNight
5%15%56%20%1
539
16th to endNight
6%119%44%26%2
573
September1st to 15thNight
9%127%38%20%2
540
16th to endNight
7%431%38%17%1
537
October1st to 15thNight
12%8%31%31%15%1
585
16th to endNight
7%6%38%32%13%1
813
November1st to 15thNight
7%8%34%35%13%
950
16th to endNight
10%8%35%34%10%1
975
December1st to 15thNight
11%9%38%35%5%
910
16th to endNight
13%9%34%35%7%
960
Page generated at 2017-12-03 10:16:46. Version ac04

Copyright 2017 A. Danko


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