Florida Caverns State Park
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Florida Caverns State Park clear sky chart from 2005-11-05 to 2019-06-19.

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
58%
17774
23%
54022
19%
17730
64%
17730
31%
32795

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
39%
840
24%
2717
14%
836
53%
836
27%
1625
January16th to endNight
39%
896
25%
2702
16%
896
48%
896
27%
1700
February1st to 15thNight
44%
823
25%
2468
15%
819
53%
819
29%
1511
February16th to endNight
40%
735
25%
2205
13%
735
50%
735
29%
1356
March1st to 15thNight
47%
840
27%
2436
16%
840
55%
840
34%
1441
March16th to endNight
50%
896
25%
2464
15%
896
57%
896
36%
1481
April1st to 15thNight
52%
710
26%
2178
21%
710
58%
710
33%
1271
April16th to endNight
63%
624
30%
2077
26%
624
70%
624
42%
1048
May1st to 15thNight
68%
629
27%
1889
22%
629
72%
629
40%
1052
May16th to endNight
74%
657
23%
1970
20%
657
77%
657
36%
1160
June1st to 15thNight
76%
630
16%
1890
15%
630
77%
630
29%
1222
June16th to endNight
77%
597
15%
1791
14%
597
77%
597
28%
1164
July1st to 15thNight
79%
555
12%
1665
12%
555
79%
555
30%
1079
July16th to endNight
79%
612
11%
1757
12%
579
80%
579
28%
1148
August1st to 15thNight
75%
575
11%
1906
12%
572
76%
572
23%
1262
August16th to endNight
71%
621
14%
2070
18%
621
72%
621
20%
1423
September1st to 15thNight
68%
749
13%
2114
13%
749
68%
749
22%
1503
September16th to endNight
69%
777
24%
2145
20%
777
72%
777
32%
1363
October1st to 15thNight
66%
780
33%
2145
28%
780
70%
780
42%
1221
October16th to endNight
62%
832
35%
2424
31%
832
68%
832
40%
1347
November1st to 15thNight
58%
820
30%
2637
28%
820
65%
820
37%
1432
November16th to endNight
53%
840
29%
2730
25%
840
62%
840
36%
1480
December1st to 15thNight
47%
840
25%
2730
20%
840
56%
840
28%
1640
December16th to endNight
43%
896
21%
2912
17%
896
50%
896
24%
1866

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
10%5%25%6%35%5%5%8%40%
54685
Night
9%4244345%6%8%46%
54228
TransparencyDay
39%7%11%17%16%7%
54388
Night
33%7%12%18%18%9%
54029
SeeingDay
11%315%21%25%23%
7641
Night
11%319%32%27%6%
17778

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 15thDay
11%6%345%335%5%7%43%
1881
16th to endDay
14%5%35%5%24346%44%
2223
February1st to 15thDay
13%7%25%5%2435%7%42%
2050
16th to endDay
14%5%24424447%44%
1840
March1st to 15thDay
9%5%243245%5%6%48%
2184
16th to endDay
10%6%14424446%48%
2463
April1st to 15thDay
11%5%35%4245%5%5%46%
2441
16th to endDay
7%425%5%34346%52%
2487
May1st to 15thDay
6%325%5%35%5%6%8%47%
2721
16th to endDay
7%5%25%6%45%6%5%7%42%
2847
June1st to 15thDay
8%5%36%8%5%8%7%8%10%29%
2730
16th to endDay
6%427%7%5%8%7%7%11%30%
2577
July1st to 15thDay
7%5%36%9%5%9%9%8%10%23%
2535
16th to endDay
6%436%8%6%9%9%7%10%26%
2650
August1st to 15thDay
10%6%38%8%5%8%8%8%9%21%
2295
16th to endDay
10%7%37%9%5%7%6%6%8%26%
2484
September1st to 15thDay
10%436%7%46%7%8%9%30%
2161
16th to endDay
10%5%25%5%45%5%5%9%41%
2145
October1st to 15thDay
8%4245%25%5%47%48%
2145
16th to endDay
8%413322335%59%
2152
November1st to 15thDay
10%5%23323346%54%
1878
16th to endDay
9%424423336%53%
1890
December1st to 15thDay
13%5%24425%346%45%
1890
16th to endDay
18%8%45%433446%38%
2016
January1st to 15thNight
11%5%25%43435%7%46%
2717
16th to endNight
15%6%24423346%43%
2702
February1st to 15thNight
13%425%42345%6%46%
2463
16th to endNight
12%5%145%24446%47%
2205
March1st to 15thNight
8%5%2442445%8%49%
2436
16th to endNight
8%5%24423436%53%
2464
April1st to 15thNight
8%425%42445%7%49%
2178
16th to endNight
6%21332345%9%57%
2077
May1st to 15thNight
6%31433445%9%53%
1889
16th to endNight
5%3145%35%5%6%9%50%
1970
June1st to 15thNight
4326%5%35%8%8%12%38%
1890
16th to endNight
43245%46%7%8%11%38%
1791
July1st to 15thNight
5%324446%6%8%14%39%
1755
16th to endNight
33246%38%7%9%13%36%
1866
August1st to 15thNight
6%425%436%7%9%15%33%
1918
16th to endNight
7%436%7%46%7%8%10%34%
2070
September1st to 15thNight
7%5%35%6%47%7%9%11%31%
2114
16th to endNight
6%425%5%345%6%8%45%
2145
October1st to 15thNight
6%42332445%8%54%
2145
16th to endNight
8%314323335%58%
2424
November1st to 15thNight
8%423424346%55%
2637
16th to endNight
9%422423346%54%
2730
December1st to 15thNight
13%5%25%42445%6%46%
2730
16th to endNight
16%6%35%42445%7%40%
2912

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
38%5%7%15%22%9%
1882
16th to endDay
40%35%16%22%11%
2223
February1st to 15thDay
41%47%14%22%10%
2052
16th to endDay
38%5%7%16%22%9%
1840
March1st to 15thDay
32%6%9%18%23%9%
2184
16th to endDay
35%5%9%18%21%9%
2464
April1st to 15thDay
37%5%7%18%20%10%
2441
16th to endDay
32%47%22%20%11%
2487
May1st to 15thDay
32%7%11%17%21%9%
2721
16th to endDay
36%7%14%19%17%3
2851
June1st to 15thDay
45%11%13%20%8%1
2730
16th to endDay
43%11%16%16%9%1
2577
July1st to 15thDay
48%13%22%13%3
2396
16th to endDay
45%14%21%14%4
2496
August1st to 15thDay
51%14%18%11%4
2283
16th to endDay
52%10%16%13%6%1
2484
September1st to 15thDay
44%12%15%12%12%2
2161
16th to endDay
38%8%12%17%16%6%
2145
October1st to 15thDay
32%5%11%17%21%11%
2145
16th to endDay
27%36%15%29%17%
2152
November1st to 15thDay
30%47%20%24%12%
1878
16th to endDay
31%36%20%23%14%
1890
December1st to 15thDay
40%38%17%21%8%
1890
16th to endDay
47%47%19%13%6%
2016
January1st to 15thNight
37%48%15%22%11%
2717
16th to endNight
40%46%13%23%11%
2702
February1st to 15thNight
37%48%14%21%14%
2472
16th to endNight
37%48%15%18%14%
2205
March1st to 15thNight
32%5%9%18%22%10%
2436
16th to endNight
31%5%9%19%22%11%
2464
April1st to 15thNight
33%5%9%18%23%10%
2178
16th to endNight
23%410%26%22%11%
2077
May1st to 15thNight
27%5%13%18%24%10%
1890
16th to endNight
28%9%15%22%18%6%
1972
June1st to 15thNight
31%14%19%23%9%2
1890
16th to endNight
33%13%22%20%9%1
1791
July1st to 15thNight
30%14%30%20%3
1665
16th to endNight
32%14%28%18%5%
1757
August1st to 15thNight
34%16%29%15%31
1906
16th to endNight
39%15%20%15%8%2
2070
September1st to 15thNight
40%14%17%13%11%2
2114
16th to endNight
34%8%16%16%18%5%
2145
October1st to 15thNight
26%6%11%20%22%13%
2145
16th to endNight
28%35%15%26%20%
2424
November1st to 15thNight
29%37%18%25%14%
2637
16th to endNight
29%47%17%23%18%
2730
December1st to 15thNight
37%49%18%22%7%
2730
16th to endNight
42%5%8%21%14%7%
2912

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
11%5%40%27%10%5%
180
16th to endDay
11%16%30%31%9%
192
February1st to 15thDay
16%9%36%25%11%1
180
16th to endDay
10%9%37%27%14%
159
March1st to 15thDay
8%8%45%24%12%
264
16th to endDay
12%5%27%29%22%2
416
April1st to 15thDay
12%7%22%27%26%3
390
16th to endDay
7%318%29%27%13%
379
May1st to 15thDay
8%216%26%28%17%
408
16th to endDay
10%17%19%25%35%
459
June1st to 15thDay
11%5%15%32%33%
435
16th to endDay
7%213%26%48%
388
July1st to 15thDay
5%27%27%55%
365
16th to endDay
5%410%27%52%
390
August1st to 15thDay
11%310%28%46%
358
16th to endDay
9%411%33%40%
396
September1st to 15thDay
13%6%14%30%33%
375
16th to endDay
12%1219%35%28%
374
October1st to 15thDay
10%12%31%30%14%
375
16th to endDay
8%421%28%28%9%
400
November1st to 15thDay
20%117%26%24%9%
206
16th to endDay
7%5%24%39%16%7%
180
December1st to 15thDay
22%6%27%26%15%2
180
16th to endDay
26%324%29%13%2
192
January1st to 15thNight
13%8%32%33%11%1
840
16th to endNight
17%7%29%34%9%
896
February1st to 15thNight
15%6%29%38%9%
824
16th to endNight
15%5%34%36%7%
735
March1st to 15thNight
10%5%30%41%10%
840
16th to endNight
11%5%26%36%19%
896
April1st to 15thNight
10%327%42%16%
710
16th to endNight
8%122%37%27%2
624
May1st to 15thNight
6%217%39%30%3
630
16th to endNight
7%8%30%45%8%
659
June1st to 15thNight
6%7%29%45%11%
630
16th to endNight
6%421%48%19%
597
July1st to 15thNight
7%216%48%25%
555
16th to endNight
5%217%51%21%
612
August1st to 15thNight
8%1313%48%24%
575
16th to endNight
9%419%46%19%
621
September1st to 15thNight
10%16%22%46%14%
749
16th to endNight
8%19%28%42%9%
777
October1st to 15thNight
9%116%33%34%5%
780
16th to endNight
9%418%35%29%2
832
November1st to 15thNight
10%420%38%22%2
820
16th to endNight
11%5%24%36%21%
840
December1st to 15thNight
15%426%34%17%1
840
16th to endNight
19%5%25%34%15%
896
Page generated at 2019-06-20 08:02:26. Version ac04

Copyright 2019 A. Danko


Florida Caverns State Park Clear Sky Chart |Charts Home