Kickapoo Valley Reserve Visitor Center
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kickapoo Valley Reserve Visitor Center clear sky chart from 2005-11-06 to 2024-11-28.

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	13% 9% 3 8% 5% 4 4 4 5% 7% 37%	101770
	Night	13% 9% 4 8% 5% 4 4 3 5% 6% 38%	97858
Transparency	Day	44% 6% 12% 24% 12% 1	105314
	Night	44% 5% 11% 23% 14% 1	102454
Seeing	Day	18% 12% 31% 24% 12% 4	16015
	Night	17% 11% 31% 29% 11% 1	25894

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% 16% 8% 17% 7% 4 4 3 3 5% 24%	2527
	11th to 20th	Day	9% 12% 5% 13% 7% 4 6% 9% 8% 7% 20%	2530
	21st to end	Day	16% 19% 7% 12% 5% 4 3 3 5% 5% 22%	3003
February	1st to 10th	Day	9% 11% 6% 10% 5% 5% 5% 4 5% 7% 31%	1710
	11th to 20th	Day	12% 11% 5% 7% 6% 4 4 4 6% 6% 35%	1711
	21st to end	Day	12% 11% 4 11% 6% 5% 4 3 4 7% 33%	1570
March	1st to 10th	Day	14% 9% 3 5% 3 3 3 2 4 6% 47%	3120
	11th to 20th	Day	10% 7% 3 8% 4 4 4 3 5% 7% 44%	3480
	21st to end	Day	21% 14% 4 9% 4 3 4 3 4 6% 28%	4030
April	1st to 10th	Day	18% 13% 4 7% 5% 4 4 3 5% 6% 31%	2280
	11th to 20th	Day	18% 12% 3 7% 6% 5% 4 3 5% 6% 32%	2254
	21st to end	Day	19% 11% 3 8% 4 5% 4 4 6% 6% 31%	2293
May	1st to 10th	Day	17% 8% 3 6% 5% 4 5% 4 6% 7% 36%	4392
	11th to 20th	Day	14% 7% 3 7% 4 4 4 3 5% 8% 41%	4399
	21st to end	Day	17% 6% 2 6% 5% 4 4 4 6% 7% 37%	4824
June	1st to 10th	Day	11% 6% 2 6% 4 4 4 3 6% 9% 45%	2660
	11th to 20th	Day	12% 6% 2 7% 5% 4 5% 5% 5% 8% 41%	2660
	21st to end	Day	13% 6% 3 6% 6% 4 5% 3 6% 9% 39%	2660
July	1st to 10th	Day	10% 6% 3 8% 5% 5% 6% 5% 8% 10% 35%	4440
	11th to 20th	Day	5% 3 2 5% 4 5% 6% 4 8% 10% 49%	4440
	21st to end	Day	8% 5% 3 7% 5% 5% 5% 5% 7% 9% 42%	4813
August	1st to 10th	Day	8% 6% 3 7% 5% 5% 5% 5% 7% 8% 41%	4246
	11th to 20th	Day	12% 6% 2 6% 4 4 4 3 5% 7% 46%	3945
	21st to end	Day	10% 6% 2 6% 4 4 5% 4 7% 9% 43%	4180
September	1st to 10th	Day	13% 6% 2 5% 5% 4 5% 3 5% 8% 45%	2280
	11th to 20th	Day	12% 7% 2 5% 4 4 4 4 4 7% 46%	2271
	21st to end	Day	13% 6% 3 6% 4 4 4 3 6% 8% 43%	2044
October	1st to 10th	Day	14% 7% 2 5% 4 4 4 3 4 6% 46%	1900
	11th to 20th	Day	17% 9% 3 7% 4 4 4 3 6% 6% 38%	1900
	21st to end	Day	16% 10% 3 7% 5% 4 4 3 4 6% 38%	1963
November	1st to 10th	Day	14% 9% 3 7% 4 4 3 3 5% 8% 40%	1762
	11th to 20th	Day	14% 13% 4 10% 6% 4 4 3 5% 7% 31%	1686
	21st to end	Day	12% 11% 3 9% 5% 4 3 3 5% 6% 38%	1576
December	1st to 10th	Day	13% 13% 5% 10% 6% 5% 4 3 5% 6% 30%	1520
	11th to 20th	Day	13% 13% 6% 9% 6% 5% 5% 3 5% 8% 27%	1918
	21st to end	Day	17% 21% 9% 12% 5% 4 3 2 3 4 18%	2783
January	1st to 10th	Night	9% 13% 8% 15% 6% 6% 4 3 4 5% 29%	4428
	11th to 20th	Night	9% 14% 6% 14% 7% 5% 5% 5% 8% 6% 21%	4440
	21st to end	Night	14% 17% 9% 12% 5% 5% 4 3 4 5% 22%	4660
February	1st to 10th	Night	8% 13% 6% 11% 6% 6% 5% 4 4 5% 32%	2470
	11th to 20th	Night	10% 9% 3 9% 5% 5% 5% 3 5% 5% 40%	2356
	21st to end	Night	14% 12% 3 9% 5% 4 4 3 4 6% 36%	1884
March	1st to 10th	Night	13% 9% 3 6% 4 3 4 4 5% 6% 42%	3733
	11th to 20th	Night	10% 7% 2 7% 5% 4 5% 4 6% 8% 42%	3495
	21st to end	Night	25% 11% 3 10% 5% 4 3 2 4 4 29%	3600
April	1st to 10th	Night	17% 10% 3 8% 5% 4 4 3 4 6% 36%	1900
	11th to 20th	Night	19% 8% 2 6% 5% 3 4 3 5% 7% 38%	1875
	21st to end	Night	19% 8% 2 6% 4 4 5% 3 6% 7% 35%	1886
May	1st to 10th	Night	16% 8% 3 6% 5% 5% 5% 4 5% 7% 36%	2510
	11th to 20th	Night	11% 7% 2 6% 4 4 4 3 5% 6% 47%	2506
	21st to end	Night	12% 7% 2 6% 4 4 4 4 6% 8% 43%	2743
June	1st to 10th	Night	10% 5% 2 6% 4 4 4 4 7% 9% 45%	1520
	11th to 20th	Night	11% 5% 3 7% 5% 4 3 3 5% 9% 46%	1520
	21st to end	Night	9% 7% 2 6% 4 3 4 4 6% 8% 48%	1520
July	1st to 10th	Night	12% 7% 2 6% 4 3 4 3 5% 8% 46%	2530
	11th to 20th	Night	4 3 1 4 3 4 4 4 7% 9% 56%	2530
	21st to end	Night	6% 6% 2 6% 4 5% 5% 4 7% 8% 48%	2750
August	1st to 10th	Night	10% 5% 2 5% 4 4 5% 4 5% 8% 49%	2691
	11th to 20th	Night	10% 6% 2 6% 3 3 3 3 5% 6% 52%	2891
	21st to end	Night	10% 6% 2 6% 3 4 4 3 5% 7% 50%	3476
September	1st to 10th	Night	10% 5% 3 5% 4 3 4 3 5% 7% 53%	1900
	11th to 20th	Night	12% 5% 2 4 4 3 3 3 4 7% 52%	1900
	21st to end	Night	11% 6% 2 5% 4 3 3 3 5% 6% 52%	2123
October	1st to 10th	Night	12% 6% 3 5% 3 3 4 3 5% 5% 51%	2280
	11th to 20th	Night	15% 7% 2 7% 4 3 4 4 5% 7% 42%	2280
	21st to end	Night	16% 10% 3 6% 4 4 4 4 6% 6% 37%	2633
November	1st to 10th	Night	14% 9% 3 6% 4 4 4 3 5% 5% 43%	2536
	11th to 20th	Night	12% 12% 4 10% 6% 5% 4 3 5% 6% 33%	2710
	21st to end	Night	15% 11% 3 9% 4 4 4 3 4 6% 37%	2759
December	1st to 10th	Night	12% 12% 4 9% 6% 6% 4 3 6% 7% 29%	2660
	11th to 20th	Night	13% 14% 5% 12% 6% 5% 4 4 4 5% 27%	3279
	21st to end	Night	19% 17% 6% 13% 5% 5% 4 3 4 5% 20%	4884

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	64% 5% 12% 14% 5%	2528
	11th to 20th	Day	59% 6% 11% 18% 7%	2530
	21st to end	Day	65% 4 12% 14% 4	3003
February	1st to 10th	Day	51% 6% 14% 17% 11% 1	1710
	11th to 20th	Day	48% 5% 12% 24% 9% 2	1720
	21st to end	Day	52% 4 11% 19% 11% 3	1570
March	1st to 10th	Day	41% 4 11% 26% 16% 2	3120
	11th to 20th	Day	40% 5% 12% 31% 11% 1	3480
	21st to end	Day	58% 6% 10% 16% 9% 1	4030
April	1st to 10th	Day	53% 5% 12% 19% 10% 1	2280
	11th to 20th	Day	52% 5% 9% 21% 10% 2	2254
	21st to end	Day	51% 7% 11% 18% 11% 1	2293
May	1st to 10th	Day	44% 7% 11% 22% 15% 1	4433
	11th to 20th	Day	40% 6% 10% 32% 11% 1	4403
	21st to end	Day	44% 7% 10% 22% 15% 2	4837
June	1st to 10th	Day	35% 7% 14% 27% 15% 2	2660
	11th to 20th	Day	39% 7% 14% 23% 16% 1	2660
	21st to end	Day	41% 7% 14% 24% 13% 2	2660
July	1st to 10th	Day	42% 7% 17% 26% 7% 1	4371
	11th to 20th	Day	28% 6% 15% 31% 18% 1	4365
	21st to end	Day	37% 7% 14% 22% 18% 1	4662
August	1st to 10th	Day	38% 7% 14% 26% 13% 1	4231
	11th to 20th	Day	37% 5% 12% 32% 13%	3984
	21st to end	Day	36% 5% 14% 29% 13% 1	4179
September	1st to 10th	Day	37% 6% 13% 25% 17% 1	2280
	11th to 20th	Day	37% 6% 13% 31% 13% 1	2271
	21st to end	Day	39% 6% 12% 30% 13% 1	2044
October	1st to 10th	Day	24% 3 7% 42% 22% 1	3160
	11th to 20th	Day	35% 5% 10% 27% 20% 2	3140
	21st to end	Day	43% 3 11% 29% 12% 1	3214
November	1st to 10th	Day	42% 5% 14% 23% 14% 2	1762
	11th to 20th	Day	53% 5% 11% 21% 9% 1	1686
	21st to end	Day	47% 5% 15% 23% 9% 1	1576
December	1st to 10th	Day	55% 6% 12% 17% 8% 1	1520
	11th to 20th	Day	56% 5% 16% 15% 7% 1	1915
	21st to end	Day	71% 4 7% 13% 5%	2783
January	1st to 10th	Night	57% 5% 10% 20% 7%	4428
	11th to 20th	Night	60% 5% 11% 15% 9%	4440
	21st to end	Night	64% 5% 9% 15% 5% 1	4660
February	1st to 10th	Night	53% 5% 10% 19% 11% 1	2470
	11th to 20th	Night	46% 5% 12% 23% 12% 1	2357
	21st to end	Night	50% 5% 12% 21% 11% 2	1884
March	1st to 10th	Night	43% 5% 10% 28% 11% 3	3733
	11th to 20th	Night	38% 5% 10% 27% 17% 2	3495
	21st to end	Night	59% 5% 7% 19% 9% 2	3600
April	1st to 10th	Night	49% 5% 9% 20% 14% 2	1900
	11th to 20th	Night	45% 5% 9% 21% 16% 3	1875
	21st to end	Night	46% 6% 12% 20% 13% 2	1886
May	1st to 10th	Night	44% 8% 12% 17% 19%	2534
	11th to 20th	Night	36% 7% 10% 25% 19% 2	2507
	21st to end	Night	35% 9% 12% 24% 19% 1	2751
June	1st to 10th	Night	33% 8% 14% 27% 17% 2	1520
	11th to 20th	Night	35% 6% 11% 26% 19% 2	1520
	21st to end	Night	32% 8% 14% 26% 16% 4	1520
July	1st to 10th	Night	37% 4 18% 25% 13% 2	2490
	11th to 20th	Night	23% 6% 17% 35% 17% 2	2482
	21st to end	Night	31% 7% 17% 23% 20% 2	2662
August	1st to 10th	Night	33% 6% 13% 28% 18% 2	2682
	11th to 20th	Night	32% 5% 14% 31% 16% 1	2918
	21st to end	Night	33% 5% 14% 26% 18% 3	3476
September	1st to 10th	Night	31% 5% 11% 28% 23% 1	1900
	11th to 20th	Night	33% 5% 12% 33% 17% 1	1900
	21st to end	Night	32% 6% 11% 31% 20% 1	2123
October	1st to 10th	Night	25% 3 7% 35% 28% 2	3800
	11th to 20th	Night	30% 4 12% 28% 25%	3779
	21st to end	Night	45% 4 10% 26% 15% 1	4332
November	1st to 10th	Night	41% 5% 12% 24% 15% 2	2536
	11th to 20th	Night	53% 5% 13% 18% 10% 1	2710
	21st to end	Night	50% 4 13% 25% 7% 1	2759
December	1st to 10th	Night	54% 5% 13% 20% 7% 1	2660
	11th to 20th	Night	58% 6% 11% 18% 7% 1	3281
	21st to end	Night	67% 4 9% 14% 5%	4884

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	17% 18% 35% 20% 7% 3	270
	11th to 20th	Day	21% 20% 38% 15% 5% 1	270
	21st to end	Day	22% 18% 36% 20% 4	297
February	1st to 10th	Day	16% 23% 38% 17% 4 2	270
	11th to 20th	Day	20% 25% 36% 14% 4	270
	21st to end	Day	20% 24% 40% 15% 1	225
March	1st to 10th	Day	21% 20% 41% 14% 4	270
	11th to 20th	Day	23% 20% 34% 16% 6% 2	270
	21st to end	Day	29% 13% 32% 16% 8% 1	423
April	1st to 10th	Day	29% 15% 35% 17% 4	460
	11th to 20th	Day	30% 16% 27% 17% 8% 2	452
	21st to end	Day	24% 14% 32% 20% 8% 2	460
May	1st to 10th	Day	20% 16% 31% 24% 7% 2	646
	11th to 20th	Day	20% 13% 30% 24% 11% 2	675
	21st to end	Day	19% 10% 28% 23% 15% 4	734
June	1st to 10th	Day	11% 8% 30% 32% 16% 3	680
	11th to 20th	Day	16% 9% 34% 25% 14% 2	680
	21st to end	Day	15% 9% 31% 29% 13% 4	680
July	1st to 10th	Day	9% 4 24% 29% 24% 10%	671
	11th to 20th	Day	8% 7% 29% 31% 18% 7%	668
	21st to end	Day	6% 4 29% 35% 18% 7%	739
August	1st to 10th	Day	8% 4 25% 33% 23% 8%	676
	11th to 20th	Day	15% 6% 20% 28% 22% 9%	608
	21st to end	Day	13% 9% 21% 30% 21% 7%	539
September	1st to 10th	Day	16% 8% 23% 29% 18% 5%	490
	11th to 20th	Day	14% 6% 24% 32% 20% 5%	490
	21st to end	Day	18% 12% 27% 25% 15% 3	444
October	1st to 10th	Day	16% 12% 34% 27% 9% 2	300
	11th to 20th	Day	24% 17% 36% 16% 6%	300
	21st to end	Day	24% 21% 34% 16% 4 1	330
November	1st to 10th	Day	22% 15% 37% 19% 6% 2	300
	11th to 20th	Day	21% 18% 41% 15% 4 1	300
	21st to end	Day	23% 17% 40% 15% 4	291
December	1st to 10th	Day	15% 21% 40% 17% 7%	270
	11th to 20th	Day	19% 18% 37% 19% 6%	270
	21st to end	Day	31% 17% 37% 13% 2	297
January	1st to 10th	Night	14% 17% 36% 25% 7% 1	950
	11th to 20th	Night	19% 14% 38% 24% 5% 1	950
	21st to end	Night	19% 12% 36% 27% 5% 1	1045
February	1st to 10th	Night	14% 16% 36% 27% 6% 1	950
	11th to 20th	Night	16% 16% 39% 23% 6%	882
	21st to end	Night	21% 17% 36% 21% 4	628
March	1st to 10th	Night	20% 14% 36% 23% 6% 1	760
	11th to 20th	Night	19% 13% 34% 26% 8% 1	585
	21st to end	Night	25% 8% 30% 29% 7% 1	627
April	1st to 10th	Night	20% 14% 38% 23% 5%	570
	11th to 20th	Night	23% 11% 31% 27% 6%	563
	21st to end	Night	22% 10% 31% 27% 8% 1	570
May	1st to 10th	Night	19% 9% 33% 32% 6%	570
	11th to 20th	Night	17% 7% 32% 32% 11% 1	561
	21st to end	Night	15% 6% 30% 34% 14% 1	617
June	1st to 10th	Night	10% 7% 30% 41% 12% 1	570
	11th to 20th	Night	13% 5% 31% 38% 12%	570
	21st to end	Night	11% 5% 24% 42% 16% 1	570
July	1st to 10th	Night	8% 2 19% 39% 30% 3	555
	11th to 20th	Night	8% 3 20% 43% 23% 3	552
	21st to end	Night	7% 2 17% 49% 22% 3	624
August	1st to 10th	Night	8% 2 17% 46% 26% 2	567
	11th to 20th	Night	12% 3 16% 38% 26% 6%	564
	21st to end	Night	12% 3 19% 40% 22% 3	627
September	1st to 10th	Night	12% 5% 23% 37% 17% 5%	570
	11th to 20th	Night	15% 3 24% 32% 22% 4	570
	21st to end	Night	13% 10% 27% 35% 14% 2	750
October	1st to 10th	Night	15% 8% 29% 29% 18% 1	760
	11th to 20th	Night	18% 12% 34% 27% 9% 1	760
	21st to end	Night	22% 11% 32% 28% 6% 1	836
November	1st to 10th	Night	18% 11% 35% 27% 9%	780
	11th to 20th	Night	18% 17% 39% 21% 6%	910
	21st to end	Night	20% 16% 33% 24% 6%	986
December	1st to 10th	Night	19% 13% 41% 22% 5% 1	950
	11th to 20th	Night	22% 13% 35% 23% 6%	950
	21st to end	Night	27% 15% 33% 21% 4	1045

Page generated at 2024-11-24 23:22:17. Version ac07

Copyright © 2024 Attilla Danko.