Kissimmee Prairie Preserve State Park
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kissimmee Prairie Preserve State Park clear sky chart from 2005-11-05 to 2017-12-20.

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
61%
16457
20%
48062
16%
16416
66%
16416
30%
30186

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
47%
718
18%
2327
13%
716
55%
716
26%
1430
January16th to endNight
48%
768
24%
2466
19%
768
58%
768
31%
1459
February1st to 15thNight
47%
701
24%
2103
16%
698
57%
698
33%
1271
February16th to endNight
51%
631
28%
1785
17%
631
62%
631
39%
1024
March1st to 15thNight
53%
720
29%
1980
17%
720
64%
720
44%
1098
March16th to endNight
58%
768
26%
2112
20%
768
64%
768
43%
1187
April1st to 15thNight
61%
718
23%
1976
18%
718
65%
718
45%
1083
April16th to endNight
62%
720
27%
1819
17%
720
66%
720
43%
1079
May1st to 15thNight
69%
656
25%
1736
18%
656
72%
656
43%
1010
May16th to endNight
75%
561
20%
1682
16%
561
77%
561
35%
1014
June1st to 15thNight
66%
540
10%
1620
8%
540
66%
540
21%
1148
June16th to endNight
75%
540
10%
1620
8%
540
75%
540
23%
1151
July1st to 15thNight
71%
510
6%
1530
5%
510
71%
510
19%
1143
July16th to endNight
76%
564
8%
1595
8%
531
76%
531
22%
1150
August1st to 15thNight
78%
545
7%
1615
7%
542
78%
542
24%
1112
August16th to endNight
64%
764
6%
2047
5%
764
64%
764
19%
1526
September1st to 15thNight
64%
720
6%
1980
6%
720
64%
720
18%
1478
September16th to endNight
62%
717
10%
1980
10%
717
62%
717
19%
1445
October1st to 15thNight
68%
720
22%
2073
23%
720
70%
720
30%
1304
October16th to endNight
60%
768
25%
2304
23%
768
65%
768
31%
1407
November1st to 15thNight
64%
760
29%
2281
25%
760
70%
760
39%
1287
November16th to endNight
56%
780
31%
2340
26%
780
63%
780
34%
1381
December1st to 15thNight
58%
780
25%
2532
23%
780
64%
780
29%
1511
December16th to endNight
60%
788
23%
2559
23%
788
64%
788
31%
1488

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%5%37%7%47%6%6%8%33%
48761
Night
7%425%5%35%5%6%9%43%
48271
TransparencyDay
44%8%14%16%11%4
48462
Night
34%8%17%20%13%5%
48074
SeeingDay
10%211%21%26%28%
6266
Night
9%215%32%30%9%
16465

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
10%6%26%5%45%6%6%9%36%
1611
16th to endDay
9%425%5%35%5%6%7%44%
1755
February1st to 15thDay
10%5%25%5%245%5%7%45%
1750
16th to endDay
8%5%25%5%245%6%7%44%
1688
March1st to 15thDay
5%2246%37%46%8%47%
1980
16th to endDay
7%425%5%37%46%8%45%
2111
April1st to 15thDay
6%325%6%47%46%8%42%
1972
16th to endDay
7%4247%5%6%5%5%8%41%
2139
May1st to 15thDay
4425%6%47%6%6%8%43%
2223
16th to endDay
7%6%37%7%48%6%7%7%31%
2431
June1st to 15thDay
12%7%39%9%5%8%7%6%9%19%
2340
16th to endDay
9%6%48%9%48%7%6%9%22%
2340
July1st to 15thDay
11%7%39%11%5%7%7%8%8%18%
2340
16th to endDay
8%7%49%10%6%8%7%7%9%19%
2465
August1st to 15thDay
7%5%38%9%6%8%7%8%11%22%
2322
16th to endDay
10%7%410%9%5%7%8%7%8%19%
2151
September1st to 15thDay
8%7%49%10%5%8%8%7%9%20%
1980
16th to endDay
11%9%49%8%5%7%8%8%8%19%
1980
October1st to 15thDay
8%5%37%7%5%7%7%6%9%32%
1887
16th to endDay
9%6%25%6%35%46%7%40%
1920
November1st to 15thDay
6%415%6%36%5%5%8%44%
1907
16th to endDay
8%5%35%6%35%5%5%7%42%
1950
December1st to 15thDay
9%5%36%5%46%5%5%7%39%
1755
16th to endDay
5%4245%36%5%6%10%43%
1764
January1st to 15thNight
8%6%26%6%245%5%10%40%
2327
16th to endNight
10%424425%5%5%7%45%
2466
February1st to 15thNight
11%4244245%47%47%
2103
16th to endNight
6%42332446%8%51%
1785
March1st to 15thNight
4323425%35%9%55%
1980
16th to endNight
5%2144245%5%7%57%
2112
April1st to 15thNight
321432346%9%56%
1976
16th to endNight
6%313434448%54%
1819
May1st to 15thNight
5%3133345%5%8%55%
1736
16th to endNight
5%3146%26%6%8%10%43%
1682
June1st to 15thNight
8%7%37%7%46%7%7%11%28%
1620
16th to endNight
6%5%27%6%47%8%7%11%32%
1620
July1st to 15thNight
11%5%35%5%35%7%8%11%31%
1620
16th to endNight
45%36%7%47%8%8%11%31%
1703
August1st to 15thNight
5%5%245%46%7%9%12%35%
1626
16th to endNight
11%6%36%6%45%6%8%11%28%
2047
September1st to 15thNight
7%6%47%7%47%7%8%11%27%
1980
16th to endNight
9%6%37%7%45%6%7%11%29%
1980
October1st to 15thNight
7%5%345%26%5%7%8%43%
2073
16th to endNight
10%5%25%5%2445%8%46%
2304
November1st to 15thNight
5%32442446%7%52%
2281
16th to endNight
7%424425%45%8%48%
2340
December1st to 15thNight
9%425%5%3446%6%47%
2532
16th to endNight
5%425%5%45%5%6%9%47%
2559

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
42%6%8%19%16%5%
1612
16th to endDay
36%47%21%19%9%
1755
February1st to 15thDay
37%47%17%21%11%
1752
16th to endDay
36%5%11%19%18%9%
1688
March1st to 15thDay
33%412%23%18%7%
1980
16th to endDay
36%5%11%20%18%7%
2112
April1st to 15thDay
36%6%12%21%18%4
1972
16th to endDay
38%5%10%17%21%6%
2139
May1st to 15thDay
35%6%11%20%19%6%
2223
16th to endDay
46%8%13%18%11%1
2435
June1st to 15thDay
55%9%16%14%3
2340
16th to endDay
55%11%18%11%2
2340
July1st to 15thDay
57%13%20%7%1
2201
16th to endDay
55%13%20%9%
2310
August1st to 15thDay
49%13%28%8%
2309
16th to endDay
57%13%21%7%
2151
September1st to 15thDay
55%13%19%10%1
1980
16th to endDay
58%11%16%9%3
1980
October1st to 15thDay
45%7%12%16%13%4
1887
16th to endDay
40%6%8%13%20%9%
1920
November1st to 15thDay
37%411%22%16%8%
1907
16th to endDay
40%6%7%18%15%10%
1950
December1st to 15thDay
42%6%11%19%13%6%
1755
16th to endDay
33%6%13%23%15%7%
1764
January1st to 15thNight
38%5%15%21%14%5%
2327
16th to endNight
34%5%10%24%17%8%
2466
February1st to 15thNight
34%47%19%21%11%
2112
16th to endNight
27%6%13%23%20%8%
1785
March1st to 15thNight
25%413%29%20%6%
1980
16th to endNight
24%6%14%25%20%8%
2112
April1st to 15thNight
24%5%18%26%18%6%
1976
16th to endNight
27%5%13%24%22%5%
1819
May1st to 15thNight
25%7%13%29%16%7%
1737
16th to endNight
29%9%19%26%15%
1684
June1st to 15thNight
46%9%23%17%4
1620
16th to endNight
41%13%24%18%2
1620
July1st to 15thNight
44%16%25%12%2
1530
16th to endNight
37%17%27%15%
1595
August1st to 15thNight
34%17%36%11%
1615
16th to endNight
43%16%27%11%
2047
September1st to 15thNight
43%17%23%13%1
1980
16th to endNight
45%12%21%15%3
1980
October1st to 15thNight
35%7%17%17%18%3
2073
16th to endNight
36%5%11%16%21%9%
2304
November1st to 15thNight
29%411%26%20%7%
2281
16th to endNight
33%49%23%18%9%
2340
December1st to 15thNight
36%5%11%25%13%7%
2532
16th to endNight
32%6%15%22%16%6%
2559

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
17%8%35%20%12%5%
90
16th to endDay
14%13%32%16%19%3
96
February1st to 15thDay
8%10%26%32%14%7%
90
16th to endDay
14%5%24%35%19%
189
March1st to 15thDay
4326%35%25%3
270
16th to endDay
7%5%22%26%29%7%
288
April1st to 15thDay
4223%30%26%12%
270
16th to endDay
8%212%28%28%20%
270
May1st to 15thDay
6%13%19%38%21%
288
16th to endDay
7%15%17%32%34%
331
June1st to 15thDay
17%1412%25%38%
315
16th to endDay
11%26%25%54%
315
July1st to 15thDay
8%1422%63%
305
16th to endDay
9%210%22%54%
326
August1st to 15thDay
8%9%21%59%
313
16th to endDay
14%139%21%50%
332
September1st to 15thDay
9%239%22%53%
315
16th to endDay
11%112%29%43%
314
October1st to 15thDay
12%16%27%37%14%
315
16th to endDay
12%221%25%28%10%
336
November1st to 15thDay
9%19%36%30%12%
325
16th to endDay
7%218%41%24%5%
330
December1st to 15thDay
8%5%30%35%17%2
135
16th to endDay
6%211%40%30%8%
108
January1st to 15thNight
12%5%25%34%20%1
720
16th to endNight
12%6%26%39%15%
768
February1st to 15thNight
12%5%27%40%13%
704
16th to endNight
8%329%44%12%
631
March1st to 15thNight
6%431%41%15%
720
16th to endNight
6%325%43%20%
768
April1st to 15thNight
4325%44%21%1
718
16th to endNight
8%318%47%20%1
720
May1st to 15thNight
7%114%47%25%3
657
16th to endNight
6%5%36%41%9%
563
June1st to 15thNight
10%1421%47%14%
540
16th to endNight
7%114%46%28%
540
July1st to 15thNight
10%128%46%31%
510
16th to endNight
318%47%37%
564
August1st to 15thNight
6%9%47%35%
545
16th to endNight
14%1312%43%25%
764
September1st to 15thNight
10%1313%47%24%
720
16th to endNight
12%419%45%17%
717
October1st to 15thNight
11%17%33%38%8%
720
16th to endNight
13%115%32%32%4
768
November1st to 15thNight
5%317%41%29%3
760
16th to endNight
8%223%42%21%1
780
December1st to 15thNight
11%317%41%24%1
780
16th to endNight
5%321%38%27%3
788
Page generated at 2017-12-21 07:04:51. Version ac04

Copyright 2017 A. Danko


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