Jonesboro
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Jonesboro clear sky chart from 2005-11-06 to 2024-01-31.

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%
24246
24%
74798
18%
24190
56%
24190
31%
44546

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
29%
950
24%
2539
9%
946
39%
946
30%
1643
January11th to 20thNight
25%
950
23%
2470
8%
950
35%
950
27%
1674
January21st to endNight
28%
1043
26%
2711
9%
1043
39%
1043
32%
1729
February1st to 10thNight
30%
857
19%
2297
8%
857
37%
857
26%
1566
February11th to 20thNight
25%
703
20%
2099
9%
700
34%
700
26%
1356
February21st to endNight
24%
592
23%
1776
8%
592
36%
592
23%
1170
March1st to 10thNight
34%
662
22%
2102
12%
662
42%
662
26%
1297
March11th to 20thNight
29%
540
19%
1980
12%
540
38%
540
20%
1241
March21st to endNight
36%
594
19%
2087
13%
594
45%
594
23%
1315
April1st to 10thNight
34%
540
26%
1800
15%
540
50%
540
31%
1030
April11th to 20thNight
41%
533
28%
1775
22%
533
53%
533
31%
1004
April21st to endNight
38%
540
24%
1800
16%
540
52%
540
28%
1086
May1st to 10thNight
46%
540
20%
1800
16%
540
54%
540
30%
1050
May11th to 20thNight
52%
531
21%
1644
18%
531
57%
531
29%
1021
May21st to endNight
60%
583
21%
1551
16%
582
63%
582
32%
1002
June1st to 10thNight
69%
540
23%
1440
19%
540
72%
540
39%
851
June11th to 20thNight
83%
540
30%
1440
27%
540
84%
540
55%
749
June21st to endNight
76%
540
28%
1440
22%
540
79%
540
48%
793
July1st to 10thNight
78%
525
20%
1400
19%
525
79%
525
43%
827
July11th to 20thNight
78%
522
21%
1526
22%
522
79%
522
44%
825
July21st to endNight
77%
591
25%
1673
27%
558
77%
558
40%
932
August1st to 10thNight
80%
537
24%
1676
28%
534
81%
534
39%
895
August11th to 20thNight
76%
534
24%
1776
30%
534
77%
534
36%
979
August21st to endNight
77%
594
24%
1980
30%
594
78%
594
35%
1098
September1st to 10thNight
75%
540
29%
1800
32%
540
77%
540
37%
974
September11th to 20thNight
70%
540
32%
1800
33%
540
73%
540
35%
999
September21st to endNight
66%
715
30%
1981
23%
715
69%
715
43%
1098
October1st to 10thNight
65%
720
32%
2160
27%
720
69%
720
45%
1125
October11th to 20thNight
49%
720
33%
2160
21%
720
59%
720
38%
1210
October21st to endNight
45%
792
29%
2376
20%
792
54%
792
32%
1446
November1st to 10thNight
51%
740
32%
2316
24%
740
62%
740
39%
1246
November11th to 20thNight
42%
760
30%
2470
19%
760
56%
760
36%
1330
November21st to endNight
41%
760
27%
2470
19%
760
51%
760
30%
1447
December1st to 10thNight
36%
892
24%
2602
12%
892
47%
892
28%
1639
December11th to 20thNight
37%
948
24%
3119
12%
948
46%
948
26%
1904
December21st to endNight
28%
1038
13%
4762
9%
1026
38%
1026
15%
2995

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
13%5%25%5%345%5%7%45%
74865
Night
13%5%2443445%7%49%
75279
TransparencyDay
37%6%11%24%17%4
74581
Night
35%5%10%24%21%5%
75084
SeeingDay
14%6%21%26%23%11%
14308
Night
15%5%26%33%18%2
24256

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
20%7%24422335%47%
1621
11th to 20thDay
20%8%25%433445%42%
1710
21st to endDay
16%6%25%42335%6%48%
1872
February1st to 10thDay
20%6%25%435%5%46%40%
1660
11th to 20thDay
16%9%27%5%3445%7%38%
1748
21st to endDay
24%7%36%6%4335%5%35%
1480
March1st to 10thDay
18%7%25%33435%7%42%
1873
11th to 20thDay
21%7%36%5%34445%39%
1980
21st to endDay
18%6%36%6%45%5%5%7%35%
2268
April1st to 10thDay
12%7%35%5%2445%7%47%
2160
11th to 20thDay
15%6%25%5%3445%7%44%
2134
21st to endDay
16%6%36%5%3345%8%41%
2160
May1st to 10thDay
15%6%36%5%45%45%6%40%
2160
11th to 20thDay
12%435%5%45%6%6%9%41%
2244
21st to endDay
8%6%26%7%46%6%8%10%38%
2725
June1st to 10thDay
7%426%5%35%6%7%9%46%
2520
11th to 20thDay
5%313435%6%8%11%50%
2520
21st to endDay
42246%45%5%6%9%52%
2520
July1st to 10thDay
6%425%7%5%7%7%7%10%41%
2520
11th to 20thDay
6%325%5%35%7%7%9%48%
2377
21st to endDay
7%325%5%45%7%7%11%44%
2546
August1st to 10thDay
6%425%5%36%6%8%12%43%
2252
11th to 20thDay
10%5%25%5%45%5%5%9%45%
2125
21st to endDay
6%5%26%5%345%7%10%47%
2376
September1st to 10thDay
9%6%25%5%445%6%8%48%
2160
11th to 20thDay
12%42443446%7%49%
2147
21st to endDay
10%42432346%7%55%
1971
October1st to 10thDay
8%424434447%57%
1800
11th to 20thDay
14%5%1332345%6%54%
1800
21st to endDay
20%424324345%49%
1980
November1st to 10thDay
11%425%413345%58%
1759
11th to 20thDay
12%6%25%423446%52%
1710
21st to endDay
20%6%24434445%45%
1710
December1st to 10thDay
20%6%34434345%43%
1576
11th to 20thDay
16%7%35%5%35%35%444%
1918
21st to endDay
16%9%37%6%3445%6%36%
2783
January1st to 10thNight
19%6%34423335%47%
2539
11th to 20thNight
19%6%35%5%33445%43%
2470
21st to endNight
18%5%24323445%49%
2711
February1st to 10thNight
21%7%34424445%43%
2297
11th to 20thNight
18%6%35%423345%45%
2098
21st to endNight
20%6%26%5%33446%41%
1776
March1st to 10thNight
18%6%25%423446%46%
2102
11th to 20thNight
19%7%35%5%33345%43%
1980
21st to endNight
16%6%25%5%3445%8%41%
2087
April1st to 10thNight
10%425%43445%8%50%
1800
11th to 20thNight
13%42443345%7%50%
1775
21st to endNight
14%6%245%34447%47%
1800
May1st to 10thNight
14%5%24423349%49%
1800
11th to 20thNight
12%5%35%4345%6%7%47%
1644
21st to endNight
6%5%36%6%35%6%8%10%43%
1551
June1st to 10thNight
7%424435%6%7%9%49%
1440
11th to 20thNight
222342347%10%63%
1440
21st to endNight
4213435%5%5%12%55%
1440
July1st to 10thNight
44245%35%5%7%13%49%
1440
11th to 20thNight
43144346%7%13%52%
1577
21st to endNight
5%325%435%46%9%54%
1772
August1st to 10thNight
33145%35%6%7%11%53%
1686
11th to 20thNight
6%4245%345%6%10%51%
1776
21st to endNight
6%325%445%5%6%10%50%
1980
September1st to 10thNight
8%42442345%9%56%
1800
11th to 20thNight
9%4244445%6%7%51%
1800
21st to endNight
7%425%323445%60%
1981
October1st to 10thNight
8%313423447%60%
2160
11th to 20thNight
12%424423245%57%
2160
21st to endNight
18%41442343452%
2376
November1st to 10thNight
13%423333346%58%
2316
11th to 20thNight
13%414323346%56%
2470
21st to endNight
16%424433447%50%
2470
December1st to 10thNight
19%6%25%423346%46%
2602
11th to 20thNight
16%6%25%433345%49%
3279
21st to endNight
16%7%36%6%35%446%38%
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
43%39%25%16%4
1622
11th to 20thDay
46%49%24%16%1
1710
21st to endDay
38%312%26%17%4
1872
February1st to 10thDay
45%5%12%23%14%2
1660
11th to 20thDay
47%5%10%19%16%4
1758
21st to endDay
53%38%17%14%6%
1480
March1st to 10thDay
43%411%18%19%6%
1873
11th to 20thDay
48%5%8%22%15%3
1980
21st to endDay
47%7%13%21%11%1
2268
April1st to 10thDay
38%5%9%26%19%3
2160
11th to 20thDay
40%410%23%16%6%
2134
21st to endDay
42%6%9%24%18%1
2160
May1st to 10thDay
45%6%11%20%17%2
2160
11th to 20thDay
37%9%15%22%15%1
2248
21st to endDay
38%11%14%23%11%2
2725
June1st to 10thDay
32%9%13%26%19%1
2520
11th to 20thDay
24%7%16%32%17%4
2520
21st to endDay
27%8%13%27%21%4
2520
July1st to 10thDay
34%11%15%22%15%3
2451
11th to 20thDay
29%9%15%27%16%4
2305
21st to endDay
30%9%15%33%12%1
2405
August1st to 10thDay
31%9%18%29%12%1
2238
11th to 20thDay
34%8%14%26%16%3
2125
21st to endDay
31%7%15%27%16%5%
2376
September1st to 10thDay
33%7%11%27%17%5%
2160
11th to 20thDay
32%7%9%22%24%5%
2147
21st to endDay
28%5%10%25%26%7%
1971
October1st to 10thDay
27%6%10%23%25%9%
1800
11th to 20thDay
31%47%24%26%8%
1800
21st to endDay
38%46%25%21%7%
1980
November1st to 10thDay
30%47%26%24%8%
1759
11th to 20thDay
33%48%24%25%6%
1710
21st to endDay
43%47%20%23%4
1710
December1st to 10thDay
43%49%23%17%3
1576
11th to 20thDay
44%38%24%18%2
1915
21st to endDay
48%5%10%21%13%3
2783
January1st to 10thNight
41%38%23%21%4
2539
11th to 20thNight
44%49%23%18%3
2470
21st to endNight
38%39%25%21%3
2711
February1st to 10thNight
45%49%21%18%3
2297
11th to 20thNight
42%48%23%17%5%
2099
21st to endNight
44%48%19%17%7%
1776
March1st to 10thNight
41%38%16%22%10%
2102
11th to 20thNight
45%410%18%18%4
1980
21st to endNight
42%5%10%23%17%2
2087
April1st to 10thNight
32%6%11%25%21%6%
1800
11th to 20thNight
34%47%25%23%7%
1775
21st to endNight
38%5%10%24%22%2
1800
May1st to 10thNight
35%5%13%24%19%4
1800
11th to 20thNight
36%7%12%23%18%3
1645
21st to endNight
35%9%15%23%16%3
1552
June1st to 10thNight
29%7%13%27%21%3
1440
11th to 20thNight
18%5%15%33%25%5%
1440
21st to endNight
22%6%14%30%20%8%
1440
July1st to 10thNight
25%9%20%27%17%3
1400
11th to 20thNight
21%9%21%27%16%6%
1526
21st to endNight
25%8%15%34%17%1
1673
August1st to 10thNight
23%9%16%34%16%1
1676
11th to 20thNight
28%7%14%29%20%3
1776
21st to endNight
28%8%14%27%18%5%
1980
September1st to 10thNight
27%7%9%29%20%8%
1800
11th to 20thNight
30%7%9%23%26%6%
1800
21st to endNight
27%49%21%30%9%
1981
October1st to 10thNight
24%49%28%24%11%
2160
11th to 20thNight
30%46%19%31%10%
2160
21st to endNight
37%47%19%25%8%
2376
November1st to 10thNight
29%47%26%27%8%
2316
11th to 20thNight
31%37%23%26%10%
2470
21st to endNight
36%38%22%26%4
2470
December1st to 10thNight
41%38%24%19%4
2602
11th to 20thNight
39%37%23%24%4
3281
21st to endNight
46%5%11%19%16%3
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
25%11%39%16%7%2
270
11th to 20thDay
27%13%37%19%3
270
21st to endDay
18%9%48%21%4
294
February1st to 10thDay
28%11%35%18%7%1
240
11th to 20thDay
25%19%37%16%2
240
21st to endDay
36%10%34%14%6%
198
March1st to 10thDay
24%12%30%25%9%1
240
11th to 20thDay
24%16%31%23%5%
240
21st to endDay
23%12%34%21%10%1
354
April1st to 10thDay
17%10%36%25%12%1
420
11th to 20thDay
20%9%32%28%9%2
412
21st to endDay
18%10%32%25%12%3
420
May1st to 10thDay
14%11%29%30%13%2
423
11th to 20thDay
14%422%29%21%10%
486
21st to endDay
8%417%33%28%11%
679
June1st to 10thDay
8%412%28%28%20%
630
11th to 20thDay
4211%34%35%14%
630
21st to endDay
5%215%33%30%16%
630
July1st to 10thDay
6%29%26%33%24%
621
11th to 20thDay
6%27%24%38%24%
618
21st to endDay
7%15%28%37%22%
684
August1st to 10thDay
7%17%32%37%16%
550
11th to 20thDay
13%17%23%40%16%
439
21st to endDay
9%7%21%36%28%
495
September1st to 10thDay
8%17%25%38%20%
450
11th to 20thDay
10%110%21%34%23%
450
21st to endDay
13%213%30%27%15%
441
October1st to 10thDay
7%320%33%30%7%
270
11th to 20thDay
13%6%33%27%16%5%
270
21st to endDay
25%9%30%20%13%3
297
November1st to 10thDay
15%6%26%31%19%3
270
11th to 20thDay
9%9%37%31%12%2
270
21st to endDay
24%11%29%23%12%1
270
December1st to 10thDay
18%13%37%19%12%2
270
11th to 20thDay
22%9%35%23%11%1
270
21st to endDay
23%18%35%20%31
297
January1st to 10thNight
21%9%38%28%5%
950
11th to 20thNight
21%11%38%26%31
950
21st to endNight
20%8%40%30%2
1043
February1st to 10thNight
25%7%35%30%4
857
11th to 20thNight
21%8%42%26%3
703
21st to endNight
24%13%36%25%2
592
March1st to 10thNight
19%9%33%33%6%
662
11th to 20thNight
21%11%35%28%5%
540
21st to endNight
19%8%33%31%9%
594
April1st to 10thNight
12%7%42%31%8%
540
11th to 20thNight
15%7%33%32%13%
533
21st to endNight
16%5%36%32%11%1
540
May1st to 10thNight
16%5%28%37%13%1
540
11th to 20thNight
13%5%25%35%18%3
531
21st to endNight
7%219%41%27%4
584
June1st to 10thNight
7%313%38%34%5%
540
11th to 20thNight
219%49%36%3
540
21st to endNight
413%40%39%4
540
July1st to 10thNight
426%34%44%10%
525
11th to 20thNight
427%30%47%10%
522
21st to endNight
6%16%31%45%10%
591
August1st to 10thNight
415%33%49%8%
537
11th to 20thNight
8%17%34%43%7%
534
21st to endNight
7%5%28%51%8%
594
September1st to 10thNight
9%7%36%42%6%
540
11th to 20thNight
10%111%31%38%8%
540
21st to endNight
9%315%36%33%4
715
October1st to 10thNight
8%318%36%30%5%
720
11th to 20thNight
13%5%27%37%15%2
720
21st to endNight
20%5%27%33%14%1
792
November1st to 10thNight
14%428%36%17%1
740
11th to 20thNight
15%7%33%36%10%
760
21st to endNight
18%7%31%31%13%
760
December1st to 10thNight
23%7%30%34%6%1
892
11th to 20thNight
21%7%31%35%7%
950
21st to endNight
23%9%35%29%5%
1045
Page generated at 2024-01-28 04:26:34. Version ac07

Copyright 2024 Attilla Danko


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