Osceola (MO)
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Osceola (MO) clear sky chart from 2005-11-06 to 2024-11-02.

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 Type	Minimum conditions for hour to be usable				Out of hours
	Clear of Clouds	Transparency	Seeing	Sky Brightness
Planetary:	50%	(no limit)	Average	(no limit)	Nighttime Hours
Deep Sky:	70%	Average	(no limit)	5.9	Nighttime Hours
CCD Imaging:	70%	Below Average	Poor	(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

By Month

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 Forecast	Data Points
Cloud Cover	Day	12% 8% 3 6% 4 4 4 3 5% 7% 45%	101004
	Night	12% 8% 3 6% 4 3 4 3 5% 6% 47%	98029
Transparency	Day	39% 6% 12% 25% 16% 2	100817
	Night	38% 5% 11% 26% 18% 3	97887
Seeing	Day	15% 11% 28% 27% 15% 3	15598
	Night	15% 11% 31% 29% 12% 1	25402

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
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	15% 10% 4 7% 4 4 4 3 4 5% 40%	2847
	11th to 20th	Day	12% 12% 4 9% 3 5% 4 3 4 5% 38%	2850
	21st to end	Day	17% 16% 4 7% 3 3 3 3 3 4 37%	3135
February	1st to 10th	Day	15% 12% 4 9% 4 3 3 3 4 6% 37%	1710
	11th to 20th	Day	14% 11% 4 6% 4 4 4 3 4 5% 41%	1664
	21st to end	Day	15% 10% 4 7% 4 4 3 4 5% 5% 38%	1637
March	1st to 10th	Day	17% 9% 3 6% 3 3 2 2 4 5% 46%	3436
	11th to 20th	Day	14% 9% 2 4 2 3 3 2 5% 6% 50%	3480
	21st to end	Day	18% 13% 3 7% 4 4 4 3 5% 6% 35%	3814
April	1st to 10th	Day	14% 8% 2 6% 4 4 4 4 5% 6% 43%	2235
	11th to 20th	Day	17% 8% 2 6% 4 3 4 4 5% 6% 41%	2254
	21st to end	Day	21% 8% 3 7% 4 4 4 3 5% 7% 35%	2304
May	1st to 10th	Day	19% 8% 3 7% 4 4 5% 4 5% 7% 35%	4082
	11th to 20th	Day	16% 7% 2 6% 4 4 4 3 5% 7% 41%	4082
	21st to end	Day	13% 6% 3 6% 5% 5% 5% 4 6% 8% 40%	4662
June	1st to 10th	Day	7% 5% 2 6% 4 4 4 4 7% 9% 47%	2660
	11th to 20th	Day	8% 4 2 6% 5% 4 5% 5% 6% 9% 47%	2660
	21st to end	Day	5% 2 1 4 4 4 5% 4 7% 9% 54%	2660
July	1st to 10th	Day	11% 7% 2 7% 5% 5% 4 3 6% 8% 42%	4184
	11th to 20th	Day	5% 4 2 6% 4 5% 5% 4 6% 9% 50%	4120
	21st to end	Day	7% 4 2 5% 5% 5% 5% 6% 9% 12% 42%	4465
August	1st to 10th	Day	4 4 2 5% 4 4 5% 4 6% 10% 52%	4104
	11th to 20th	Day	9% 6% 3 6% 4 5% 4 4 5% 9% 45%	4011
	21st to end	Day	6% 4 1 4 3 4 3 3 5% 8% 58%	4180
September	1st to 10th	Day	10% 5% 2 6% 4 3 4 3 5% 5% 52%	2280
	11th to 20th	Day	10% 5% 2 6% 4 4 4 3 4 6% 51%	2185
	21st to end	Day	8% 5% 2 5% 3 4 4 4 5% 6% 53%	2033
October	1st to 10th	Day	12% 5% 2 4 3 4 3 2 4 5% 56%	1900
	11th to 20th	Day	15% 5% 2 5% 3 3 3 2 3 5% 55%	1900
	21st to end	Day	19% 7% 2 6% 3 2 3 2 2 5% 47%	2090
November	1st to 10th	Day	12% 6% 2 4 3 2 2 3 4 5% 57%	1868
	11th to 20th	Day	15% 8% 2 5% 3 3 3 3 4 5% 48%	1696
	21st to end	Day	16% 9% 2 5% 3 3 3 3 4 6% 45%	1520
December	1st to 10th	Day	12% 12% 4 6% 3 3 3 3 5% 6% 44%	1520
	11th to 20th	Day	14% 11% 4 6% 4 3 3 3 4 5% 43%	1918
	21st to end	Day	18% 18% 5% 8% 4 4 4 2 4 6% 28%	2858
January	1st to 10th	Night	11% 10% 4 12% 5% 4 4 2 4 5% 40%	4108
	11th to 20th	Night	13% 8% 3 9% 7% 7% 6% 3 3 5% 35%	4120
	21st to end	Night	20% 14% 4 7% 3 3 3 2 3 4 36%	4532
February	1st to 10th	Night	13% 13% 5% 6% 4 4 4 4 5% 6% 38%	2470
	11th to 20th	Night	14% 9% 3 7% 3 3 3 3 5% 6% 43%	2403
	21st to end	Night	16% 9% 2 6% 4 5% 3 3 4 5% 44%	1829
March	1st to 10th	Night	17% 9% 2 5% 4 2 3 3 4 5% 46%	3419
	11th to 20th	Night	13% 7% 1 4 3 3 3 3 5% 6% 52%	3480
	21st to end	Night	16% 8% 4 8% 5% 5% 4 3 5% 6% 36%	3817
April	1st to 10th	Night	11% 7% 2 4 4 3 3 2 5% 6% 51%	1943
	11th to 20th	Night	15% 8% 2 6% 3 3 3 2 5% 6% 47%	1875
	21st to end	Night	18% 6% 3 6% 5% 3 4 3 4 7% 41%	1872
May	1st to 10th	Night	15% 8% 3 6% 4 4 4 4 5% 7% 40%	2823
	11th to 20th	Night	14% 8% 3 6% 4 3 4 3 5% 9% 41%	2823
	21st to end	Night	11% 4 2 5% 4 4 3 4 5% 7% 50%	2900
June	1st to 10th	Night	5% 4 2 5% 3 3 4 4 8% 10% 53%	1520
	11th to 20th	Night	5% 3 1 5% 3 4 4 5% 8% 10% 51%	1520
	21st to end	Night	4 3 1 3 3 3 4 3 6% 10% 62%	1520
July	1st to 10th	Night	11% 7% 3 6% 4 3 3 3 5% 9% 46%	2779
	11th to 20th	Night	4 3 1 4 3 3 4 3 5% 11% 59%	2850
	21st to end	Night	6% 4 1 5% 4 3 4 4 7% 12% 51%	3098
August	1st to 10th	Night	3 2 1 3 3 2 3 3 6% 8% 64%	2836
	11th to 20th	Night	9% 5% 2 6% 4 4 4 3 6% 7% 51%	2825
	21st to end	Night	3 3 1 3 3 3 4 3 6% 8% 60%	3476
September	1st to 10th	Night	10% 4 1 4 3 3 3 3 5% 7% 57%	1900
	11th to 20th	Night	10% 5% 2 4 3 4 4 4 5% 7% 52%	1991
	21st to end	Night	8% 4 2 5% 4 3 3 3 5% 7% 57%	2128
October	1st to 10th	Night	8% 4 1 4 2 3 3 3 5% 6% 60%	2280
	11th to 20th	Night	14% 5% 2 3 3 3 3 3 4 5% 56%	2280
	21st to end	Night	16% 6% 2 5% 3 4 3 2 4 5% 52%	2508
November	1st to 10th	Night	11% 6% 2 3 2 3 3 3 4 5% 60%	2233
	11th to 20th	Night	13% 7% 2 5% 4 4 3 2 3 6% 52%	2481
	21st to end	Night	16% 9% 2 5% 3 3 3 2 4 4 49%	2660
December	1st to 10th	Night	13% 10% 4 5% 4 4 4 3 4 6% 43%	2660
	11th to 20th	Night	15% 9% 3 8% 4 3 3 3 4 5% 42%	3279
	21st to end	Night	18% 19% 5% 9% 4 3 3 2 3 4 29%	4791

Transparency (when cloud cover <= 30%)
Color Meanings: Too cloudy to forecast Poor Below Average Average Above average Transparent
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	47% 3 8% 27% 14% 1	2848
	11th to 20th	Day	49% 4 10% 25% 12%	2850
	21st to end	Day	52% 4 9% 18% 16% 2	3135
February	1st to 10th	Day	50% 5% 10% 22% 11% 1	1710
	11th to 20th	Day	46% 4 12% 20% 14% 3	1673
	21st to end	Day	48% 3 8% 22% 13% 6%	1637
March	1st to 10th	Day	42% 3 7% 23% 20% 4	3436
	11th to 20th	Day	36% 5% 11% 28% 16% 5%	3480
	21st to end	Day	50% 7% 17% 20% 6% 1	3814
April	1st to 10th	Day	41% 5% 11% 23% 17% 2	2235
	11th to 20th	Day	43% 5% 13% 22% 16% 1	2254
	21st to end	Day	50% 5% 11% 22% 11% 1	2304
May	1st to 10th	Day	48% 7% 11% 19% 14% 1	4120
	11th to 20th	Day	42% 8% 13% 23% 14%	4086
	21st to end	Day	40% 7% 12% 27% 13% 1	4675
June	1st to 10th	Day	31% 9% 17% 25% 17% 1	2660
	11th to 20th	Day	32% 7% 16% 29% 15% 2	2660
	21st to end	Day	25% 7% 15% 32% 16% 4	2660
July	1st to 10th	Day	40% 6% 12% 23% 16% 3	4120
	11th to 20th	Day	30% 7% 12% 32% 18% 2	4051
	21st to end	Day	30% 9% 23% 28% 10%	4325
August	1st to 10th	Day	26% 7% 17% 26% 23% 1	4090
	11th to 20th	Day	36% 6% 15% 28% 14% 1	4050
	21st to end	Day	25% 5% 13% 39% 14% 4	4179
September	1st to 10th	Day	34% 6% 11% 26% 18% 7%	2280
	11th to 20th	Day	34% 6% 9% 25% 25% 2	2185
	21st to end	Day	31% 7% 10% 25% 23% 4	2033
October	1st to 10th	Day	31% 5% 8% 26% 25% 5%	1900
	11th to 20th	Day	34% 3 7% 27% 23% 6%	1900
	21st to end	Day	42% 4 7% 24% 19% 5%	2090
November	1st to 10th	Day	31% 4 11% 29% 22% 4	1868
	11th to 20th	Day	39% 2 9% 22% 23% 4	1696
	21st to end	Day	42% 4 9% 26% 18% 1	1520
December	1st to 10th	Day	42% 4 10% 31% 13% 1	1520
	11th to 20th	Day	45% 4 9% 25% 15% 2	1915
	21st to end	Day	58% 5% 10% 18% 8% 1	2858
January	1st to 10th	Night	47% 4 14% 23% 12% 1	4108
	11th to 20th	Night	52% 4 11% 23% 10% 1	4120
	21st to end	Night	53% 3 11% 20% 12% 1	4532
February	1st to 10th	Night	46% 5% 11% 22% 14% 2	2470
	11th to 20th	Night	42% 4 10% 24% 16% 3	2404
	21st to end	Night	44% 3 8% 23% 17% 6%	1829
March	1st to 10th	Night	41% 5% 9% 20% 20% 5%	3419
	11th to 20th	Night	34% 4 9% 25% 25% 3	3480
	21st to end	Night	46% 7% 14% 23% 9% 1	3817
April	1st to 10th	Night	34% 5% 11% 23% 22% 4	1943
	11th to 20th	Night	38% 4 10% 24% 19% 5%	1875
	21st to end	Night	44% 6% 10% 25% 14% 1	1872
May	1st to 10th	Night	42% 7% 13% 20% 15% 3	2850
	11th to 20th	Night	41% 7% 12% 27% 11% 1	2824
	21st to end	Night	32% 7% 13% 29% 18% 1	2908
June	1st to 10th	Night	25% 7% 18% 29% 17% 4	1520
	11th to 20th	Night	23% 9% 14% 29% 22% 3	1520
	21st to end	Night	18% 6% 16% 33% 22% 6%	1520
July	1st to 10th	Night	36% 5% 13% 25% 17% 4	2734
	11th to 20th	Night	20% 5% 11% 38% 24% 2	2796
	21st to end	Night	25% 6% 21% 33% 14% 1	2999
August	1st to 10th	Night	18% 5% 18% 32% 23% 3	2826
	11th to 20th	Night	34% 4 11% 31% 19% 1	2852
	21st to end	Night	21% 6% 13% 38% 18% 4	3476
September	1st to 10th	Night	27% 5% 12% 27% 22% 8%	1900
	11th to 20th	Night	30% 6% 10% 23% 26% 5%	1991
	21st to end	Night	28% 4 8% 27% 30% 4	2128
October	1st to 10th	Night	25% 6% 10% 25% 28% 7%	2280
	11th to 20th	Night	32% 3 8% 25% 25% 8%	2280
	21st to end	Night	36% 4 8% 23% 23% 5%	2508
November	1st to 10th	Night	27% 4 12% 27% 22% 7%	2233
	11th to 20th	Night	36% 3 7% 26% 24% 4	2481
	21st to end	Night	40% 4 8% 26% 19% 3	2660
December	1st to 10th	Night	43% 5% 12% 24% 16% 1	2660
	11th to 20th	Night	44% 4 10% 26% 16% 1	3281
	21st to end	Night	60% 3 9% 17% 9% 2	4791

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
Month	Days in Month		Occurrence of each Forecast	Data Points
January	1st to 10th	Day	21% 20% 35% 23% 2	270
	11th to 20th	Day	31% 20% 37% 11% 1	270
	21st to end	Day	18% 22% 46% 11% 3	297
February	1st to 10th	Day	23% 23% 36% 16% 1	270
	11th to 20th	Day	20% 26% 38% 11% 4	270
	21st to end	Day	26% 26% 36% 10% 2	225
March	1st to 10th	Day	21% 22% 39% 16% 2	270
	11th to 20th	Day	29% 20% 33% 16% 3	270
	21st to end	Day	37% 19% 32% 9% 3	297
April	1st to 10th	Day	22% 20% 33% 20% 4	415
	11th to 20th	Day	22% 17% 40% 16% 4	452
	21st to end	Day	25% 16% 32% 22% 5%	484
May	1st to 10th	Day	21% 15% 37% 21% 6%	653
	11th to 20th	Day	17% 14% 30% 25% 11% 2	675
	21st to end	Day	16% 8% 33% 25% 15% 4	734
June	1st to 10th	Day	8% 5% 22% 38% 23% 5%	680
	11th to 20th	Day	9% 4 25% 38% 21% 3	680
	21st to end	Day	5% 6% 33% 36% 17% 3	680
July	1st to 10th	Day	11% 3 16% 32% 29% 9%	671
	11th to 20th	Day	4 3 19% 41% 26% 6%	668
	21st to end	Day	9% 2 15% 36% 31% 7%	739
August	1st to 10th	Day	8% 2 17% 42% 25% 5%	676
	11th to 20th	Day	9% 5% 19% 36% 27% 5%	648
	21st to end	Day	10% 2 13% 31% 34% 9%	539
September	1st to 10th	Day	10% 4 15% 37% 27% 7%	490
	11th to 20th	Day	8% 3 18% 41% 24% 6%	395
	21st to end	Day	12% 8% 24% 37% 15% 5%	300
October	1st to 10th	Day	13% 9% 28% 29% 15% 6%	300
	11th to 20th	Day	17% 16% 35% 24% 7%	300
	21st to end	Day	30% 15% 33% 18% 3 1	330
November	1st to 10th	Day	17% 15% 37% 22% 8% 1	273
	11th to 20th	Day	18% 21% 32% 19% 8% 1	270
	21st to end	Day	24% 19% 30% 23% 4	270
December	1st to 10th	Day	17% 18% 39% 18% 7% 2	270
	11th to 20th	Day	21% 19% 35% 21% 3 1	270
	21st to end	Day	21% 29% 36% 13% 1	297
January	1st to 10th	Night	17% 17% 38% 23% 5%	950
	11th to 20th	Night	20% 18% 37% 20% 4	950
	21st to end	Night	18% 17% 38% 24% 3	1045
February	1st to 10th	Night	21% 16% 41% 20% 3	950
	11th to 20th	Night	20% 17% 38% 22% 3	929
	21st to end	Night	23% 18% 37% 18% 3	573
March	1st to 10th	Night	18% 17% 36% 24% 4	570
	11th to 20th	Night	24% 12% 33% 26% 4 1	570
	21st to end	Night	23% 16% 35% 22% 4	627
April	1st to 10th	Night	16% 15% 37% 27% 5%	570
	11th to 20th	Night	19% 16% 34% 24% 7%	563
	21st to end	Night	21% 10% 39% 23% 7%	570
May	1st to 10th	Night	15% 9% 35% 32% 9%	570
	11th to 20th	Night	16% 8% 30% 32% 14% 1	561
	21st to end	Night	13% 6% 28% 32% 18% 2	617
June	1st to 10th	Night	7% 3 19% 41% 28% 1	570
	11th to 20th	Night	6% 2 26% 46% 20% 1	570
	21st to end	Night	5% 2 28% 46% 18% 1	570
July	1st to 10th	Night	12% 2 14% 38% 31% 4	555
	11th to 20th	Night	3 1 18% 44% 30% 3	552
	21st to end	Night	8% 2 13% 39% 37% 2	624
August	1st to 10th	Night	5% 2 16% 46% 30% 2	567
	11th to 20th	Night	7% 2 15% 46% 26% 4	564
	21st to end	Night	5% 1 16% 36% 39% 3	627
September	1st to 10th	Night	11% 2 16% 41% 27% 4	570
	11th to 20th	Night	13% 2 16% 39% 26% 4	570
	21st to end	Night	9% 5% 22% 40% 20% 3	608
October	1st to 10th	Night	10% 5% 29% 32% 22% 3	760
	11th to 20th	Night	16% 10% 38% 28% 8%	760
	21st to end	Night	19% 14% 33% 27% 7% 1	836
November	1st to 10th	Night	13% 10% 38% 28% 10% 1	745
	11th to 20th	Night	16% 15% 36% 25% 7%	844
	21st to end	Night	21% 13% 37% 22% 6%	950
December	1st to 10th	Night	18% 15% 37% 24% 5%	950
	11th to 20th	Night	23% 13% 34% 26% 4	950
	21st to end	Night	21% 17% 36% 22% 2	1045

Page generated at 2024-10-30 00:22:58. Version ac07

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