Texarkana
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Texarkana clear sky chart from 2005-11-06 to 2024-01-27.

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
51%
24076
26%
74387
19%
24019
58%
24019
33%
43502

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
35%
948
27%
2458
11%
946
45%
946
34%
1562
January11th to 20thNight
30%
950
26%
2470
9%
950
40%
950
30%
1612
January21st to endNight
30%
1025
28%
2665
10%
1025
40%
1025
31%
1726
February1st to 10thNight
30%
900
22%
2340
8%
900
37%
900
30%
1531
February11th to 20thNight
27%
792
20%
2187
7%
788
36%
788
26%
1467
February21st to endNight
25%
444
27%
1628
13%
444
40%
444
21%
980
March1st to 10thNight
33%
540
25%
1980
16%
540
44%
540
24%
1192
March11th to 20thNight
36%
540
21%
1980
15%
540
46%
540
23%
1214
March21st to endNight
35%
594
23%
2178
15%
594
48%
594
25%
1294
April1st to 10thNight
37%
540
26%
1899
18%
540
51%
540
30%
1064
April11th to 20thNight
39%
533
25%
1775
19%
533
50%
533
29%
1044
April21st to endNight
41%
540
26%
1800
19%
540
54%
540
33%
1001
May1st to 10thNight
50%
540
23%
1739
20%
540
60%
540
32%
1011
May11th to 20thNight
51%
531
23%
1594
21%
531
57%
531
32%
967
May21st to endNight
63%
583
23%
1746
23%
582
67%
582
32%
1054
June1st to 10thNight
75%
540
22%
1620
23%
540
79%
540
41%
896
June11th to 20thNight
79%
540
24%
1620
27%
540
80%
540
45%
848
June21st to endNight
80%
540
25%
1620
27%
540
82%
540
45%
852
July1st to 10thNight
79%
525
20%
1575
23%
525
80%
525
37%
921
July11th to 20thNight
86%
522
27%
1566
33%
522
86%
522
51%
785
July21st to endNight
83%
591
26%
1673
31%
558
83%
558
43%
908
August1st to 10thNight
86%
537
27%
1601
31%
534
87%
534
51%
803
August11th to 20thNight
77%
534
27%
1694
32%
534
77%
534
37%
944
August21st to endNight
79%
594
21%
1980
27%
594
79%
594
34%
1119
September1st to 10thNight
77%
540
26%
1800
30%
540
77%
540
38%
953
September11th to 20thNight
73%
540
27%
1962
32%
540
74%
540
32%
1078
September21st to endNight
75%
544
33%
1984
35%
544
77%
544
42%
951
October1st to 10thNight
75%
720
33%
2160
27%
720
77%
720
47%
1099
October11th to 20thNight
58%
720
34%
2160
23%
720
66%
720
41%
1178
October21st to endNight
49%
792
31%
2376
22%
792
56%
792
35%
1385
November1st to 10thNight
56%
740
30%
2220
21%
740
62%
740
38%
1265
November11th to 20thNight
48%
760
29%
2280
20%
760
57%
760
37%
1290
November21st to endNight
39%
859
29%
2379
17%
859
48%
859
30%
1504
December1st to 10thNight
40%
950
26%
2470
13%
950
49%
950
31%
1608
December11th to 20thNight
37%
948
26%
2874
13%
948
45%
948
25%
1847
December21st to endNight
33%
1040
16%
4334
11%
1026
42%
1026
20%
2549

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%46%
75122
Night
12%5%2442445%7%52%
74952
TransparencyDay
37%6%11%21%19%5%
74846
Night
33%5%10%21%23%8%
74748
SeeingDay
13%7%20%26%25%10%
14120
Night
14%6%24%33%21%2
24086

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
17%8%34424335%48%
1707
11th to 20thDay
19%7%25%323346%46%
1710
21st to endDay
20%7%35%42333448%
1836
February1st to 10thDay
23%8%45%5%2433440%
1620
11th to 20thDay
20%7%35%5%24445%40%
1673
21st to endDay
26%7%35%423335%38%
1628
March1st to 10thDay
19%6%36%423446%43%
1980
11th to 20thDay
20%7%25%43445%5%41%
1980
21st to endDay
17%7%36%433446%42%
2178
April1st to 10thDay
13%5%36%5%35%46%7%44%
2060
11th to 20thDay
17%5%25%3335%5%7%44%
2134
21st to endDay
13%6%26%5%345%5%7%45%
2160
May1st to 10thDay
17%435%5%345%46%45%
2217
11th to 20thDay
12%5%26%6%45%6%5%9%42%
2302
21st to endDay
11%5%36%6%46%5%7%9%40%
2531
June1st to 10thDay
8%425%5%36%6%6%9%46%
2340
11th to 20thDay
7%3346%37%7%7%9%45%
2340
21st to endDay
5%3235%36%6%6%9%51%
2340
July1st to 10thDay
9%435%7%46%8%7%11%36%
2340
11th to 20thDay
6%3245%36%5%8%10%49%
2340
21st to endDay
8%3245%46%6%8%11%44%
2546
August1st to 10thDay
42145%46%7%8%9%50%
2328
11th to 20thDay
9%425%435%5%6%10%47%
2204
21st to endDay
7%435%6%36%7%7%8%44%
2376
September1st to 10thDay
10%5%245%3446%6%51%
2160
11th to 20thDay
14%4146%445%5%8%46%
1994
21st to endDay
9%31343445%7%57%
1958
October1st to 10thDay
8%3233345%5%7%59%
1800
11th to 20thDay
14%6%24423335%56%
1800
21st to endDay
16%5%2442433453%
1980
November1st to 10thDay
14%425%42335%5%53%
1858
11th to 20thDay
10%425%5%3345%5%54%
1900
21st to endDay
19%6%35%423335%47%
1796
December1st to 10thDay
17%8%25%32333448%
1710
11th to 20thDay
15%8%45%5%34446%42%
2161
21st to endDay
17%9%35%5%24445%42%
3135
January1st to 10thNight
18%6%2432234451%
2458
11th to 20thNight
19%5%245%23335%49%
2470
21st to endNight
19%6%25%32334449%
2665
February1st to 10thNight
18%6%34423336%47%
2340
11th to 20thNight
21%6%35%433335%44%
2186
21st to endNight
21%6%3442333448%
1628
March1st to 10thNight
17%6%35%43345%6%45%
1980
11th to 20thNight
17%7%25%43445%7%44%
1980
21st to endNight
15%5%35%5%24446%47%
2178
April1st to 10thNight
11%325%5%3445%6%52%
1899
11th to 20thNight
12%5%25%33445%7%49%
1775
21st to endNight
11%425%5%24348%53%
1800
May1st to 10thNight
10%424435%45%8%50%
1739
11th to 20thNight
10%6%26%43345%7%50%
1593
21st to endNight
8%5%25%5%345%6%10%47%
1745
June1st to 10thNight
43244345%6%10%55%
1620
11th to 20thNight
5%323333449%61%
1620
21st to endNight
5%2133345%6%8%60%
1620
July1st to 10thNight
43246%35%7%9%11%47%
1620
11th to 20thNight
5%21232348%11%59%
1620
21st to endNight
3224435%7%7%10%54%
1772
August1st to 10thNight
311333347%11%60%
1611
11th to 20thNight
7%4144346%7%10%51%
1694
21st to endNight
6%324435%6%9%11%48%
1980
September1st to 10thNight
6%42443445%7%57%
1800
11th to 20thNight
10%414425%5%6%7%52%
1962
21st to endNight
8%32331345%7%62%
1984
October1st to 10thNight
7%31432345%6%63%
2160
11th to 20thNight
12%5%13323245%60%
2160
21st to endNight
16%5%2432333457%
2376
November1st to 10thNight
12%414323335%58%
2220
11th to 20thNight
10%424424346%56%
2280
21st to endNight
16%5%35%43343450%
2379
December1st to 10thNight
16%5%35%424446%48%
2470
11th to 20thNight
15%5%245%44445%47%
3036
21st to endNight
17%7%2443334449%
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
42%38%19%22%6%
1708
11th to 20thDay
41%46%24%21%4
1710
21st to endDay
42%4418%26%6%
1836
February1st to 10thDay
50%46%17%17%6%
1620
11th to 20thDay
48%36%19%17%6%
1682
21st to endDay
50%45%12%21%7%
1628
March1st to 10thDay
43%47%17%20%9%
1980
11th to 20thDay
45%5%8%19%18%4
1980
21st to endDay
45%5%8%19%20%3
2178
April1st to 10thDay
39%6%10%22%17%7%
2060
11th to 20thDay
39%7%9%20%20%6%
2134
21st to endDay
38%7%10%21%21%3
2160
May1st to 10thDay
40%5%10%24%17%4
2217
11th to 20thDay
39%8%14%23%15%2
2306
21st to endDay
40%9%14%22%14%1
2531
June1st to 10thDay
33%10%15%26%15%1
2340
11th to 20thDay
33%8%15%24%17%2
2340
21st to endDay
28%8%15%28%20%2
2340
July1st to 10thDay
38%11%18%22%10%1
2276
11th to 20thDay
26%10%19%26%18%1
2271
21st to endDay
29%11%19%29%11%1
2405
August1st to 10thDay
26%10%19%30%15%1
2314
11th to 20thDay
32%8%16%26%15%3
2204
21st to endDay
34%10%15%25%13%3
2376
September1st to 10thDay
32%8%12%19%21%8%
2160
11th to 20thDay
36%8%10%20%19%7%
1994
21st to endDay
26%6%12%21%25%10%
1958
October1st to 10thDay
26%6%11%21%24%13%
1800
11th to 20thDay
33%46%16%27%15%
1800
21st to endDay
37%46%18%25%11%
1980
November1st to 10thDay
34%5%7%21%25%9%
1858
11th to 20thDay
33%48%18%28%10%
1900
21st to endDay
43%45%17%24%8%
1796
December1st to 10thDay
41%47%20%19%7%
1710
11th to 20thDay
43%5%6%17%22%7%
2159
21st to endDay
44%47%17%22%6%
3135
January1st to 10thNight
37%47%16%28%9%
2458
11th to 20thNight
40%48%18%23%7%
2470
21st to endNight
40%35%16%26%9%
2665
February1st to 10thNight
41%37%19%21%9%
2340
11th to 20thNight
45%46%18%20%7%
2187
21st to endNight
43%37%14%21%12%
1628
March1st to 10thNight
40%5%6%16%20%13%
1980
11th to 20thNight
41%5%8%16%21%8%
1980
21st to endNight
39%5%8%20%24%5%
2178
April1st to 10thNight
33%5%10%23%18%11%
1899
11th to 20thNight
35%6%9%19%21%11%
1775
21st to endNight
32%5%11%24%25%4
1800
May1st to 10thNight
32%6%10%24%18%9%
1739
11th to 20thNight
34%6%12%27%18%3
1594
21st to endNight
32%8%14%26%18%1
1746
June1st to 10thNight
24%9%16%30%18%3
1620
11th to 20thNight
21%7%14%29%24%4
1620
21st to endNight
21%7%15%25%26%5%
1620
July1st to 10thNight
27%10%22%27%13%2
1575
11th to 20thNight
17%8%20%32%20%3
1566
21st to endNight
21%9%18%34%16%1
1673
August1st to 10thNight
17%7%19%34%20%2
1601
11th to 20thNight
27%7%14%28%19%4
1694
21st to endNight
27%10%17%25%18%3
1980
September1st to 10thNight
25%8%14%22%23%9%
1800
11th to 20thNight
30%7%11%21%21%9%
1962
21st to endNight
22%6%10%21%28%13%
1984
October1st to 10thNight
23%410%24%23%17%
2160
11th to 20thNight
28%37%15%28%19%
2160
21st to endNight
33%45%17%25%15%
2376
November1st to 10thNight
30%5%8%17%28%12%
2220
11th to 20thNight
30%5%8%17%28%12%
2280
21st to endNight
39%45%17%26%9%
2379
December1st to 10thNight
38%6%9%18%21%9%
2470
11th to 20thNight
40%46%16%23%11%
3037
21st to endNight
40%47%20%24%6%
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
23%11%35%26%6%
270
11th to 20thDay
23%14%36%19%7%1
270
21st to endDay
24%16%34%17%8%
282
February1st to 10thDay
27%13%35%19%5%2
240
11th to 20thDay
27%14%41%15%3
240
21st to endDay
33%18%34%11%31
198
March1st to 10thDay
20%18%30%23%8%
240
11th to 20thDay
20%21%33%20%6%
240
21st to endDay
16%19%38%21%5%
264
April1st to 10thDay
16%12%39%23%10%1
320
11th to 20thDay
23%11%27%28%10%2
412
21st to endDay
14%13%31%30%11%2
420
May1st to 10thDay
16%9%28%35%11%1
480
11th to 20thDay
13%6%26%32%19%4
625
21st to endDay
10%5%20%34%25%6%
679
June1st to 10thDay
6%411%28%38%12%
630
11th to 20thDay
5%212%33%38%10%
630
21st to endDay
5%112%30%36%16%
630
July1st to 10thDay
7%17%28%41%15%
621
11th to 20thDay
315%26%41%24%
618
21st to endDay
6%6%21%46%22%
684
August1st to 10thDay
415%22%47%22%
626
11th to 20thDay
10%2322%43%20%
518
21st to endDay
10%1416%42%27%
495
September1st to 10thDay
8%6%21%40%25%
450
11th to 20thDay
7%19%22%37%24%
284
21st to endDay
12%39%29%29%18%
270
October1st to 10thDay
5%115%38%33%8%
270
11th to 20thDay
12%6%28%30%18%6%
270
21st to endDay
21%12%25%25%13%4
297
November1st to 10thDay
14%6%30%27%20%3
270
11th to 20thDay
9%9%33%36%12%1
270
21st to endDay
20%15%24%27%11%1
270
December1st to 10thDay
19%13%35%22%10%2
270
11th to 20thDay
23%11%31%24%9%1
270
21st to endDay
21%15%37%21%42
297
January1st to 10thNight
20%9%33%32%6%
950
11th to 20thNight
22%9%35%27%7%
950
21st to endNight
20%8%38%29%4
1025
February1st to 10thNight
22%9%36%27%6%
900
11th to 20thNight
22%10%38%26%3
792
21st to endNight
25%12%35%26%3
444
March1st to 10thNight
20%9%35%30%6%
540
11th to 20thNight
18%8%33%34%6%1
540
21st to endNight
15%10%37%30%7%
594
April1st to 10thNight
11%8%40%32%9%
540
11th to 20thNight
14%8%36%29%13%
533
21st to endNight
11%7%36%33%11%1
540
May1st to 10thNight
11%6%28%42%12%
540
11th to 20thNight
11%5%27%34%21%2
531
21st to endNight
9%318%44%25%2
584
June1st to 10thNight
5%19%38%43%4
540
11th to 20thNight
418%43%41%3
540
21st to endNight
48%36%44%8%
540
July1st to 10thNight
415%33%49%8%
525
11th to 20thNight
41428%56%8%
522
21st to endNight
215%30%52%10%
591
August1st to 10thNight
3431%53%9%
537
11th to 20thNight
7%15%33%47%7%
534
21st to endNight
7%1429%51%8%
594
September1st to 10thNight
7%17%32%46%6%
540
11th to 20thNight
10%16%34%46%3
540
21st to endNight
9%9%37%42%4
544
October1st to 10thNight
8%210%43%32%6%
720
11th to 20thNight
12%422%40%19%2
720
21st to endNight
17%7%24%32%18%2
792
November1st to 10thNight
14%323%41%18%1
740
11th to 20thNight
11%7%29%38%15%
760
21st to endNight
16%10%30%31%13%1
859
December1st to 10thNight
18%7%31%36%8%
950
11th to 20thNight
20%9%29%34%8%
950
21st to endNight
21%10%32%30%7%
1045
Page generated at 2024-01-24 08:37:25. Version ac07

Copyright 2024 Attilla Danko


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