Wakonda area (Bethel Township)
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Wakonda area (Bethel Township) clear sky chart from 2005-11-06 to 2024-11-05.

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	11% 7% 3 7% 4 4 4 4 5% 7% 43%	101384
	Night	10% 7% 3 7% 4 4 4 4 5% 7% 46%	97740
Transparency	Day	38% 6% 14% 25% 14% 2	105018
	Night	36% 6% 14% 25% 16% 2	102238
Seeing	Day	15% 9% 30% 30% 14% 3	15909
	Night	13% 8% 33% 34% 10% 1	25775

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	9% 13% 5% 13% 8% 7% 5% 5% 5% 6% 25%	2538
	11th to 20th	Day	6% 15% 5% 10% 6% 5% 7% 5% 6% 7% 28%	2678
	21st to end	Day	6% 12% 6% 14% 7% 6% 6% 5% 5% 6% 27%	3135
February	1st to 10th	Day	10% 10% 4 11% 7% 8% 7% 3 6% 6% 29%	1710
	11th to 20th	Day	10% 11% 3 8% 5% 4 5% 3 6% 7% 38%	1713
	21st to end	Day	11% 10% 4 9% 6% 5% 4 4 6% 6% 35%	1570
March	1st to 10th	Day	11% 9% 4 7% 4 3 3 3 4 6% 45%	3300
	11th to 20th	Day	10% 8% 3 7% 4 4 4 3 5% 5% 48%	3480
	21st to end	Day	25% 11% 4 11% 4 4 4 3 4 6% 24%	3814
April	1st to 10th	Day	16% 7% 3 7% 5% 4 4 4 5% 6% 39%	2143
	11th to 20th	Day	18% 9% 2 6% 4 4 4 3 5% 5% 40%	2442
	21st to end	Day	21% 7% 2 6% 4 4 4 3 4 6% 39%	2470
May	1st to 10th	Day	16% 7% 3 6% 4 5% 5% 5% 6% 8% 36%	4082
	11th to 20th	Day	11% 6% 2 6% 4 4 3 3 5% 6% 50%	4082
	21st to end	Day	17% 6% 3 6% 4 3 4 4 5% 7% 41%	4689
June	1st to 10th	Day	10% 5% 2 5% 4 3 4 4 6% 8% 49%	2741
	11th to 20th	Day	12% 6% 2 5% 4 4 4 3 6% 7% 47%	2850
	21st to end	Day	7% 5% 2 5% 4 4 5% 4 6% 8% 50%	2850
July	1st to 10th	Day	10% 5% 2 6% 5% 5% 5% 4 7% 9% 43%	4598
	11th to 20th	Day	6% 4 1 5% 3 3 3 3 5% 8% 57%	4347
	21st to end	Day	4 4 1 5% 3 3 4 5% 7% 9% 55%	4465
August	1st to 10th	Day	6% 6% 2 6% 4 4 5% 4 6% 8% 48%	4104
	11th to 20th	Day	17% 8% 2 6% 4 4 4 4 5% 7% 39%	4041
	21st to end	Day	8% 5% 2 5% 4 4 3 3 5% 7% 54%	4532
September	1st to 10th	Day	14% 4 1 4 4 4 3 3 4 6% 53%	2189
	11th to 20th	Day	8% 4 1 4 4 4 4 3 5% 7% 55%	2090
	21st to end	Day	10% 5% 1 4 3 3 4 3 5% 6% 56%	2090
October	1st to 10th	Day	15% 6% 2 5% 3 3 4 2 3 6% 51%	1976
	11th to 20th	Day	12% 6% 2 5% 3 2 2 3 4 6% 54%	1900
	21st to end	Day	15% 7% 3 6% 3 4 3 3 4 6% 47%	2005
November	1st to 10th	Day	9% 7% 3 5% 4 4 5% 4 6% 7% 48%	1709
	11th to 20th	Day	9% 9% 2 8% 5% 4 4 3 5% 6% 45%	1630
	21st to end	Day	11% 8% 3 6% 5% 3 4 4 5% 8% 43%	1520
December	1st to 10th	Day	8% 9% 4 8% 6% 4 5% 3 6% 8% 40%	1520
	11th to 20th	Day	7% 11% 5% 9% 6% 5% 5% 5% 5% 7% 35%	1918
	21st to end	Day	15% 11% 4 14% 5% 4 5% 3 5% 8% 27%	2463
January	1st to 10th	Night	10% 11% 4 12% 10% 6% 6% 4 5% 7% 25%	4417
	11th to 20th	Night	5% 10% 5% 10% 6% 6% 7% 5% 10% 6% 30%	4275
	21st to end	Night	6% 12% 7% 12% 5% 5% 5% 5% 6% 7% 31%	4532
February	1st to 10th	Night	11% 10% 3 8% 7% 5% 4 4 5% 6% 38%	2470
	11th to 20th	Night	9% 11% 3 8% 4 3 4 4 5% 7% 42%	2370
	21st to end	Night	9% 9% 3 6% 5% 4 5% 4 6% 5% 45%	1884
March	1st to 10th	Night	10% 6% 2 6% 4 3 4 3 5% 6% 52%	3556
	11th to 20th	Night	10% 7% 3 5% 3 3 3 3 5% 8% 51%	3480
	21st to end	Night	20% 11% 3 8% 6% 5% 4 3 5% 6% 29%	3817
April	1st to 10th	Night	14% 8% 3 6% 4 4 4 4 5% 7% 42%	2033
	11th to 20th	Night	16% 8% 3 6% 4 3 3 3 5% 6% 43%	1689
	21st to end	Night	18% 7% 3 5% 3 3 4 3 4 6% 43%	1710
May	1st to 10th	Night	16% 5% 2 6% 3 4 3 3 4 7% 47%	2823
	11th to 20th	Night	10% 4 2 5% 3 4 4 4 5% 8% 51%	2823
	21st to end	Night	15% 6% 2 5% 3 4 4 3 5% 9% 44%	2878
June	1st to 10th	Night	7% 4 2 3 4 3 3 3 6% 10% 54%	1435
	11th to 20th	Night	7% 4 2 4 4 3 4 4 7% 8% 53%	1330
	21st to end	Night	6% 3 1 3 3 4 4 3 6% 8% 58%	1330
July	1st to 10th	Night	7% 4 2 5% 4 4 4 3 6% 8% 53%	2368
	11th to 20th	Night	5% 3 1 3 3 2 3 3 5% 7% 65%	2619
	21st to end	Night	2 2 1 4 3 3 4 4 7% 10% 60%	3098
August	1st to 10th	Night	5% 5% 3 5% 4 5% 4 4 6% 10% 50%	2836
	11th to 20th	Night	10% 5% 2 5% 3 3 4 4 6% 9% 49%	2798
	21st to end	Night	6% 3 2 5% 3 4 3 4 6% 9% 54%	3135
September	1st to 10th	Night	9% 4 2 4 2 3 3 3 5% 6% 59%	1987
	11th to 20th	Night	8% 4 2 4 3 2 3 3 5% 7% 58%	2090
	21st to end	Night	8% 4 1 4 3 2 3 3 3 7% 61%	2090
October	1st to 10th	Night	17% 5% 2 4 3 2 3 3 4 5% 53%	2185
	11th to 20th	Night	11% 5% 3 5% 3 3 3 3 5% 6% 55%	2280
	21st to end	Night	14% 6% 2 5% 3 2 4 3 4 6% 51%	2591
November	1st to 10th	Night	8% 5% 2 5% 3 3 3 4 5% 7% 55%	2470
	11th to 20th	Night	8% 7% 2 7% 4 3 4 3 6% 6% 49%	2548
	21st to end	Night	8% 8% 2 5% 3 4 4 4 6% 6% 49%	2660
December	1st to 10th	Night	7% 9% 3 9% 5% 4 4 3 5% 7% 42%	2660
	11th to 20th	Night	9% 9% 2 7% 5% 4 5% 4 6% 7% 43%	3279
	21st to end	Night	17% 11% 5% 13% 4 4 3 3 5% 5% 29%	5194

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	57% 7% 13% 16% 6%	2539
	11th to 20th	Day	53% 4 13% 23% 6%	2678
	21st to end	Day	54% 8% 18% 13% 7%	3135
February	1st to 10th	Day	54% 7% 14% 16% 8% 1	1710
	11th to 20th	Day	46% 6% 13% 22% 12% 2	1722
	21st to end	Day	50% 6% 12% 21% 10% 2	1570
March	1st to 10th	Day	40% 6% 11% 31% 12% 1	3300
	11th to 20th	Day	39% 5% 10% 31% 13% 3	3480
	21st to end	Day	62% 7% 14% 13% 3 1	3814
April	1st to 10th	Day	45% 6% 12% 24% 12% 1	2143
	11th to 20th	Day	45% 6% 11% 21% 14% 2	2442
	21st to end	Day	46% 6% 12% 23% 13% 1	2470
May	1st to 10th	Day	42% 8% 13% 21% 15% 1	4120
	11th to 20th	Day	34% 7% 12% 28% 17% 3	4086
	21st to end	Day	41% 6% 12% 25% 14% 1	4702
June	1st to 10th	Day	31% 8% 17% 30% 13% 2	2741
	11th to 20th	Day	36% 7% 14% 24% 17% 3	2850
	21st to end	Day	29% 7% 17% 30% 14% 3	2850
July	1st to 10th	Day	34% 8% 19% 24% 14% 1	4528
	11th to 20th	Day	25% 7% 13% 33% 19% 4	4272
	21st to end	Day	23% 8% 16% 29% 21% 3	4325
August	1st to 10th	Day	32% 7% 15% 30% 14% 2	4090
	11th to 20th	Day	43% 7% 13% 26% 10% 1	4080
	21st to end	Day	29% 7% 16% 27% 17% 3	4531
September	1st to 10th	Day	33% 5% 11% 29% 19% 3	2189
	11th to 20th	Day	28% 6% 14% 33% 18% 1	2090
	21st to end	Day	27% 7% 11% 31% 22% 2	2090
October	1st to 10th	Day	23% 3 7% 25% 37% 4	3288
	11th to 20th	Day	26% 4 16% 28% 21% 6%	3140
	21st to end	Day	36% 5% 13% 26% 18% 3	3286
November	1st to 10th	Day	34% 5% 18% 26% 15% 2	1709
	11th to 20th	Day	40% 5% 14% 25% 14% 1	1630
	21st to end	Day	39% 6% 15% 25% 14% 1	1520
December	1st to 10th	Day	42% 6% 17% 24% 9% 2	1520
	11th to 20th	Day	46% 8% 17% 23% 5%	1915
	21st to end	Day	56% 6% 12% 20% 5% 1	2463
January	1st to 10th	Night	57% 6% 12% 17% 7%	4417
	11th to 20th	Night	48% 6% 14% 22% 7% 2	4275
	21st to end	Night	49% 8% 15% 18% 9%	4532
February	1st to 10th	Night	46% 6% 13% 22% 11% 1	2470
	11th to 20th	Night	41% 5% 15% 24% 12% 4	2371
	21st to end	Night	40% 5% 13% 25% 13% 3	1884
March	1st to 10th	Night	32% 6% 12% 27% 22% 2	3556
	11th to 20th	Night	33% 5% 10% 29% 20% 3	3480
	21st to end	Night	54% 9% 15% 16% 5% 1	3817
April	1st to 10th	Night	41% 7% 13% 24% 15% 1	2033
	11th to 20th	Night	41% 5% 10% 24% 17% 2	1689
	21st to end	Night	43% 6% 12% 24% 13% 2	1710
May	1st to 10th	Night	37% 6% 14% 22% 20% 2	2850
	11th to 20th	Night	30% 7% 13% 25% 22% 3	2824
	21st to end	Night	37% 6% 12% 28% 15% 2	2886
June	1st to 10th	Night	25% 8% 16% 29% 18% 4	1435
	11th to 20th	Night	27% 6% 16% 25% 21% 4	1330
	21st to end	Night	23% 8% 15% 31% 20% 3	1330
July	1st to 10th	Night	29% 6% 21% 28% 13% 3	2329
	11th to 20th	Night	19% 6% 14% 37% 20% 4	2571
	21st to end	Night	17% 9% 19% 30% 22% 4	2999
August	1st to 10th	Night	29% 7% 15% 31% 16% 2	2826
	11th to 20th	Night	31% 8% 16% 29% 14% 2	2825
	21st to end	Night	26% 7% 17% 23% 22% 4	3135
September	1st to 10th	Night	26% 5% 12% 28% 23% 5%	1987
	11th to 20th	Night	24% 6% 14% 32% 21% 2	2090
	21st to end	Night	24% 5% 11% 32% 25% 4	2090
October	1st to 10th	Night	20% 3 6% 20% 47% 4	3640
	11th to 20th	Night	23% 3 11% 31% 27% 4	3779
	21st to end	Night	36% 5% 12% 29% 17% 1	4265
November	1st to 10th	Night	29% 6% 15% 25% 22% 4	2470
	11th to 20th	Night	35% 5% 14% 26% 17% 3	2548
	21st to end	Night	34% 5% 15% 28% 17% 1	2660
December	1st to 10th	Night	42% 5% 15% 27% 10% 1	2660
	11th to 20th	Night	39% 6% 19% 29% 7%	3281
	21st to end	Night	56% 6% 11% 19% 7%	5194

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	16% 10% 29% 30% 13% 2	270
	11th to 20th	Day	18% 13% 32% 28% 7% 2	270
	21st to end	Day	15% 9% 38% 25% 11% 2	297
February	1st to 10th	Day	11% 17% 37% 31% 4	270
	11th to 20th	Day	14% 13% 38% 27% 7% 1	270
	21st to end	Day	18% 13% 38% 26% 4	225
March	1st to 10th	Day	14% 15% 39% 25% 5% 1	270
	11th to 20th	Day	21% 9% 37% 25% 7% 1	270
	21st to end	Day	31% 10% 35% 18% 5% 1	297
April	1st to 10th	Day	24% 18% 36% 19% 3 1	323
	11th to 20th	Day	24% 15% 30% 23% 7%	640
	21st to end	Day	26% 12% 29% 22% 9% 2	650
May	1st to 10th	Day	19% 11% 34% 26% 9% 1	653
	11th to 20th	Day	17% 10% 31% 24% 16% 3	675
	21st to end	Day	19% 9% 29% 28% 11% 3	734
June	1st to 10th	Day	9% 8% 22% 36% 20% 5%	680
	11th to 20th	Day	12% 8% 33% 30% 14% 3	680
	21st to end	Day	10% 7% 29% 35% 16% 2	680
July	1st to 10th	Day	7% 4 20% 38% 26% 6%	671
	11th to 20th	Day	7% 4 29% 37% 18% 4	668
	21st to end	Day	5% 3 26% 42% 20% 4	739
August	1st to 10th	Day	8% 3 23% 39% 22% 5%	676
	11th to 20th	Day	12% 3 23% 36% 21% 5%	665
	21st to end	Day	8% 4 24% 38% 23% 4	748
September	1st to 10th	Day	16% 4 25% 33% 17% 5%	399
	11th to 20th	Day	6% 6% 35% 30% 19% 4	300
	21st to end	Day	16% 9% 31% 28% 13% 4	300
October	1st to 10th	Day	17% 8% 27% 29% 14% 5%	300
	11th to 20th	Day	18% 13% 35% 25% 9% 1	300
	21st to end	Day	21% 13% 35% 24% 7% 1	330
November	1st to 10th	Day	17% 11% 34% 24% 10% 4	282
	11th to 20th	Day	13% 19% 39% 23% 6%	270
	21st to end	Day	21% 16% 26% 27% 9% 1	270
December	1st to 10th	Day	12% 11% 40% 26% 9% 3	270
	11th to 20th	Day	15% 11% 42% 21% 9%	270
	21st to end	Day	25% 8% 36% 25% 5%	297
January	1st to 10th	Night	11% 11% 37% 33% 8% 1	950
	11th to 20th	Night	11% 14% 33% 32% 8% 1	950
	21st to end	Night	14% 10% 38% 30% 8%	1045
February	1st to 10th	Night	16% 10% 39% 28% 6%	950
	11th to 20th	Night	14% 11% 38% 31% 6%	896
	21st to end	Night	14% 9% 36% 32% 8% 1	628
March	1st to 10th	Night	13% 9% 41% 32% 5% 1	660
	11th to 20th	Night	15% 10% 37% 32% 5%	570
	21st to end	Night	20% 10% 39% 23% 7%	627
April	1st to 10th	Night	19% 12% 38% 28% 3	570
	11th to 20th	Night	20% 14% 34% 25% 6% 1	563
	21st to end	Night	21% 8% 36% 25% 7% 1	570
May	1st to 10th	Night	15% 8% 36% 31% 8% 1	570
	11th to 20th	Night	14% 8% 32% 34% 11%	561
	21st to end	Night	19% 5% 31% 35% 11%	617
June	1st to 10th	Night	9% 5% 25% 43% 16% 1	570
	11th to 20th	Night	9% 4 36% 39% 12%	570
	21st to end	Night	7% 4 27% 45% 16%	570
July	1st to 10th	Night	7% 3 19% 44% 26% 1	555
	11th to 20th	Night	4 1 24% 53% 17% 1	552
	21st to end	Night	3 1 22% 57% 17%	624
August	1st to 10th	Night	7% 3 23% 46% 21% 1	567
	11th to 20th	Night	9% 3 23% 41% 22% 1	564
	21st to end	Night	6% 3 26% 45% 19% 1	627
September	1st to 10th	Night	9% 5% 25% 43% 17% 1	570
	11th to 20th	Night	10% 4 32% 39% 14% 2	570
	21st to end	Night	9% 6% 36% 34% 14% 1	570
October	1st to 10th	Night	17% 8% 30% 32% 11% 1	665
	11th to 20th	Night	14% 13% 35% 31% 7%	760
	21st to end	Night	17% 12% 30% 31% 9%	919
November	1st to 10th	Night	13% 8% 37% 31% 9% 1	950
	11th to 20th	Night	12% 11% 38% 31% 7%	950
	21st to end	Night	13% 9% 37% 32% 9%	950
December	1st to 10th	Night	13% 10% 38% 32% 6%	950
	11th to 20th	Night	15% 9% 33% 33% 9%	950
	21st to end	Night	22% 9% 34% 28% 7%	1045

Page generated at 2024-11-03 01:11:19. Version ac07

Copyright © 2024 Attilla Danko.