Kia Kima Scout Reservation
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kia Kima Scout Reservation clear sky chart from 2005-11-06 to 2025-02-06.

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% 6% 2 6% 4 4 4 4 5% 7% 46%	108397
	Night	13% 6% 2 5% 4 3 4 3 5% 7% 49%	109994
Transparency	Day	36% 6% 10% 25% 19% 4	112039
	Night	34% 5% 10% 25% 21% 5%	114494
Seeing	Day	16% 10% 25% 25% 18% 6%	15749
	Night	17% 9% 26% 30% 16% 2	25693

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	16% 9% 2 5% 2 3 3 2 3 4 49%	3982
	11th to 20th	Day	10% 6% 2 5% 4 3 3 3 4 5% 55%	4080
	21st to end	Day	22% 6% 2 4 2 3 3 3 4 4 48%	4488
February	1st to 10th	Day	17% 9% 2 6% 4 3 4 4 4 5% 43%	1755
	11th to 20th	Day	15% 7% 3 6% 5% 4 4 3 4 5% 43%	1811
	21st to end	Day	16% 9% 3 7% 4 4 4 4 5% 5% 38%	1570
March	1st to 10th	Day	22% 10% 3 5% 3 3 3 3 4 4 40%	3365
	11th to 20th	Day	14% 6% 2 5% 5% 4 3 2 3 5% 51%	3480
	21st to end	Day	16% 6% 2 7% 4 4 4 3 5% 6% 42%	3904
April	1st to 10th	Day	12% 7% 2 6% 4 4 4 3 5% 6% 46%	2280
	11th to 20th	Day	15% 7% 2 6% 4 4 5% 4 6% 7% 41%	2254
	21st to end	Day	17% 7% 3 6% 5% 4 5% 4 5% 5% 40%	2280
May	1st to 10th	Day	13% 7% 3 7% 5% 5% 5% 5% 7% 8% 36%	3765
	11th to 20th	Day	13% 5% 3 6% 5% 5% 5% 4 7% 8% 38%	4070
	21st to end	Day	12% 7% 3 7% 5% 5% 5% 4 6% 8% 37%	4824
June	1st to 10th	Day	7% 6% 2 6% 5% 5% 4 6% 6% 10% 44%	2660
	11th to 20th	Day	5% 4 1 5% 5% 5% 5% 5% 7% 11% 48%	2660
	21st to end	Day	4 4 1 5% 4 4 6% 4 7% 9% 52%	2660
July	1st to 10th	Day	9% 5% 2 5% 5% 6% 5% 4 7% 9% 43%	4390
	11th to 20th	Day	5% 4 1 4 3 4 4 4 6% 10% 54%	4120
	21st to end	Day	8% 6% 3 9% 6% 6% 6% 4 7% 11% 33%	4465
August	1st to 10th	Day	4 2 1 4 3 4 4 3 6% 8% 61%	4089
	11th to 20th	Day	10% 5% 3 7% 4 4 5% 4 5% 9% 46%	3729
	21st to end	Day	5% 4 1 5% 4 5% 5% 4 5% 9% 55%	4180
September	1st to 10th	Day	10% 5% 2 6% 4 4 4 4 6% 7% 46%	2280
	11th to 20th	Day	13% 5% 2 5% 3 4 4 4 7% 7% 46%	2280
	21st to end	Day	10% 5% 2 4 3 4 4 3 5% 7% 54%	2024
October	1st to 10th	Day	8% 4 2 5% 2 4 4 3 5% 7% 56%	1900
	11th to 20th	Day	15% 5% 1 5% 3 2 2 2 4 5% 57%	1900
	21st to end	Day	18% 6% 2 5% 3 3 3 3 3 5% 48%	2090
November	1st to 10th	Day	13% 5% 2 4 3 3 3 2 3 5% 57%	1909
	11th to 20th	Day	10% 7% 2 6% 3 3 3 3 4 6% 53%	1800
	21st to end	Day	20% 6% 2 5% 4 2 3 2 3 4 48%	1753
December	1st to 10th	Day	12% 7% 2 5% 3 3 4 3 4 4 53%	2610
	11th to 20th	Day	16% 8% 2 7% 4 3 3 3 3 4 46%	3008
	21st to end	Day	20% 13% 4 8% 4 3 4 3 4 5% 33%	3982
January	1st to 10th	Night	16% 7% 3 6% 4 3 4 3 5% 6% 44%	5966
	11th to 20th	Night	12% 5% 2 7% 4 4 3 3 4 5% 52%	5900
	21st to end	Night	20% 8% 2 5% 3 3 3 2 3 5% 46%	6490
February	1st to 10th	Night	17% 9% 3 6% 4 4 4 4 4 5% 42%	2536
	11th to 20th	Night	16% 7% 2 6% 4 3 3 3 4 5% 47%	2253
	21st to end	Night	16% 8% 2 5% 4 3 3 2 5% 6% 46%	1884
March	1st to 10th	Night	20% 9% 3 5% 3 3 3 3 4 5% 42%	3515
	11th to 20th	Night	14% 7% 2 5% 3 3 2 2 3 6% 52%	3480
	21st to end	Night	12% 7% 3 6% 5% 4 5% 4 5% 6% 43%	3726
April	1st to 10th	Night	10% 6% 2 6% 4 4 3 3 4 6% 51%	1900
	11th to 20th	Night	13% 6% 2 6% 4 3 4 4 4 7% 49%	1875
	21st to end	Night	17% 6% 2 5% 4 3 4 3 6% 8% 42%	1900
May	1st to 10th	Night	17% 5% 2 5% 4 3 3 3 5% 7% 44%	3130
	11th to 20th	Night	14% 7% 2 5% 3 3 4 3 6% 10% 43%	2811
	21st to end	Night	11% 7% 2 7% 5% 5% 4 3 6% 8% 41%	2743
June	1st to 10th	Night	8% 4 2 3 4 3 4 4 7% 10% 51%	1520
	11th to 20th	Night	3 3 1 3 3 3 3 3 6% 10% 62%	1520
	21st to end	Night	3 3 2 3 3 3 4 4 7% 9% 59%	1520
July	1st to 10th	Night	7% 4 1 5% 3 4 4 4 7% 10% 50%	2561
	11th to 20th	Night	4 3 1 4 3 3 4 3 5% 9% 61%	2850
	21st to end	Night	7% 7% 2 7% 5% 5% 5% 4 7% 9% 41%	3098
August	1st to 10th	Night	3 2 1 4 3 2 4 3 5% 8% 65%	2836
	11th to 20th	Night	5% 4 2 5% 4 4 5% 4 7% 8% 53%	3100
	21st to end	Night	4 3 1 4 3 3 4 4 6% 8% 60%	3476
September	1st to 10th	Night	8% 6% 2 3 3 3 3 3 5% 8% 56%	1900
	11th to 20th	Night	9% 5% 2 6% 4 4 4 3 5% 8% 50%	1900
	21st to end	Night	8% 4 2 4 3 4 3 3 4 6% 59%	2131
October	1st to 10th	Night	7% 3 1 3 3 3 3 3 5% 7% 63%	2280
	11th to 20th	Night	12% 5% 1 3 3 2 3 2 4 6% 59%	2280
	21st to end	Night	18% 6% 2 4 2 3 3 3 3 5% 52%	2508
November	1st to 10th	Night	13% 5% 2 4 2 2 3 2 4 7% 56%	2385
	11th to 20th	Night	13% 4 2 4 3 3 3 2 5% 6% 56%	2600
	21st to end	Night	15% 5% 2 4 3 2 3 3 4 5% 51%	2645
December	1st to 10th	Night	12% 6% 2 5% 3 2 3 3 4 6% 53%	4580
	11th to 20th	Night	17% 8% 2 6% 3 4 3 3 3 5% 46%	5199
	21st to end	Night	23% 9% 3 7% 4 4 4 3 4 5% 33%	6996

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	40% 3 9% 29% 16% 3	3983
	11th to 20th	Day	31% 4 7% 29% 23% 6%	4080
	21st to end	Day	41% 3 8% 17% 24% 8%	4488
February	1st to 10th	Day	45% 4 10% 25% 14% 2	1755
	11th to 20th	Day	43% 5% 11% 20% 18% 4	1821
	21st to end	Day	47% 4 9% 19% 14% 7%	1570
March	1st to 10th	Day	48% 5% 8% 17% 13% 9%	3365
	11th to 20th	Day	38% 3 6% 27% 19% 6%	3480
	21st to end	Day	43% 5% 11% 24% 16% 1	3904
April	1st to 10th	Day	38% 5% 9% 25% 21% 2	2280
	11th to 20th	Day	41% 6% 10% 21% 16% 5%	2254
	21st to end	Day	45% 7% 9% 21% 16% 2	2280
May	1st to 10th	Day	43% 8% 13% 20% 14% 2	3800
	11th to 20th	Day	40% 10% 14% 23% 12% 1	4074
	21st to end	Day	43% 8% 11% 23% 14% 1	4837
June	1st to 10th	Day	34% 9% 14% 24% 17% 1	2660
	11th to 20th	Day	28% 8% 13% 30% 17% 4	2660
	21st to end	Day	28% 8% 15% 26% 20% 4	2660
July	1st to 10th	Day	34% 8% 15% 27% 14% 2	4322
	11th to 20th	Day	24% 6% 11% 33% 22% 3	4051
	21st to end	Day	42% 9% 15% 26% 7% 1	4325
August	1st to 10th	Day	20% 6% 16% 32% 23% 3	4075
	11th to 20th	Day	36% 7% 13% 27% 16% 1	3765
	21st to end	Day	26% 6% 12% 36% 15% 3	4179
September	1st to 10th	Day	34% 8% 11% 23% 17% 7%	2280
	11th to 20th	Day	36% 6% 10% 20% 26% 3	2280
	21st to end	Day	31% 5% 8% 24% 29% 4	2024
October	1st to 10th	Day	16% 4 5% 16% 44% 15%	3160
	11th to 20th	Day	20% 2 4 23% 41% 9%	3140
	21st to end	Day	31% 3 6% 30% 25% 5%	3428
November	1st to 10th	Day	32% 3 9% 25% 24% 7%	1909
	11th to 20th	Day	33% 4 7% 24% 24% 8%	1800
	21st to end	Day	42% 3 7% 23% 22% 3	1753
December	1st to 10th	Day	35% 4 7% 32% 20% 2	2610
	11th to 20th	Day	42% 3 6% 28% 19% 2	3005
	21st to end	Day	53% 4 10% 19% 11% 3	3982
January	1st to 10th	Night	40% 3 9% 28% 16% 3	5966
	11th to 20th	Night	34% 4 7% 25% 26% 3	5900
	21st to end	Night	43% 3 7% 22% 20% 5%	6490
February	1st to 10th	Night	45% 4 9% 24% 16% 2	2536
	11th to 20th	Night	40% 3 10% 24% 20% 4	2254
	21st to end	Night	41% 4 9% 21% 18% 7%	1884
March	1st to 10th	Night	45% 5% 8% 17% 16% 10%	3515
	11th to 20th	Night	36% 4 9% 27% 20% 5%	3480
	21st to end	Night	40% 6% 10% 28% 16% 1	3726
April	1st to 10th	Night	35% 5% 9% 24% 22% 5%	1900
	11th to 20th	Night	35% 5% 9% 24% 20% 7%	1875
	21st to end	Night	40% 6% 11% 23% 18% 2	1900
May	1st to 10th	Night	39% 7% 14% 25% 13% 2	3160
	11th to 20th	Night	36% 8% 16% 23% 14% 2	2812
	21st to end	Night	39% 8% 12% 26% 14% 1	2751
June	1st to 10th	Night	28% 6% 15% 29% 20% 3	1520
	11th to 20th	Night	19% 5% 13% 35% 23% 4	1520
	21st to end	Night	20% 7% 16% 29% 20% 8%	1520
July	1st to 10th	Night	27% 8% 18% 26% 18% 2	2521
	11th to 20th	Night	20% 6% 11% 37% 22% 3	2796
	21st to end	Night	39% 7% 15% 26% 13%	2999
August	1st to 10th	Night	17% 6% 16% 36% 23% 1	2826
	11th to 20th	Night	27% 7% 19% 27% 18% 2	3130
	21st to end	Night	21% 6% 12% 34% 23% 3	3476
September	1st to 10th	Night	26% 7% 11% 29% 20% 8%	1900
	11th to 20th	Night	33% 6% 9% 23% 23% 5%	1900
	21st to end	Night	27% 5% 10% 22% 30% 6%	2131
October	1st to 10th	Night	14% 3 6% 16% 39% 22%	3800
	11th to 20th	Night	19% 2 5% 16% 37% 20%	3779
	21st to end	Night	28% 3 5% 26% 30% 7%	4120
November	1st to 10th	Night	30% 3 9% 25% 25% 7%	2385
	11th to 20th	Night	31% 3 7% 24% 26% 9%	2600
	21st to end	Night	36% 4 8% 25% 24% 4	2645
December	1st to 10th	Night	34% 3 9% 34% 18% 2	4580
	11th to 20th	Night	42% 3 7% 24% 20% 4	5201
	21st to end	Night	52% 4 10% 21% 10% 2	6996

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	30% 21% 32% 14% 3	300
	11th to 20th	Day	27% 23% 36% 13% 1	300
	21st to end	Day	25% 24% 35% 13% 3	330
February	1st to 10th	Day	26% 18% 38% 13% 3 1	285
	11th to 20th	Day	29% 23% 34% 10% 3 1	270
	21st to end	Day	32% 26% 31% 9% 2	225
March	1st to 10th	Day	28% 18% 35% 16% 3	270
	11th to 20th	Day	33% 20% 33% 14%	270
	21st to end	Day	26% 23% 36% 10% 5%	349
April	1st to 10th	Day	22% 18% 31% 20% 8% 1	460
	11th to 20th	Day	22% 18% 34% 17% 7% 1	452
	21st to end	Day	22% 15% 34% 20% 7% 1	460
May	1st to 10th	Day	19% 16% 34% 24% 7% 1	463
	11th to 20th	Day	17% 11% 28% 24% 15% 5%	636
	21st to end	Day	11% 8% 31% 28% 16% 6%	734
June	1st to 10th	Day	11% 5% 21% 26% 26% 9%	680
	11th to 20th	Day	6% 4 19% 38% 26% 7%	680
	21st to end	Day	5% 4 24% 36% 24% 7%	680
July	1st to 10th	Day	8% 3 15% 32% 30% 12%	671
	11th to 20th	Day	5% 2 16% 32% 34% 11%	668
	21st to end	Day	8% 1 12% 32% 32% 14%	739
August	1st to 10th	Day	7% 2 12% 37% 32% 9%	674
	11th to 20th	Day	16% 2 14% 28% 31% 9%	479
	21st to end	Day	10% 1 8% 32% 33% 15%	539
September	1st to 10th	Day	10% 3 11% 35% 31% 10%	490
	11th to 20th	Day	10% 3 14% 29% 32% 12%	490
	21st to end	Day	13% 7% 23% 28% 22% 8%	395
October	1st to 10th	Day	10% 7% 25% 34% 21% 4	300
	11th to 20th	Day	16% 16% 35% 23% 10% 2	300
	21st to end	Day	28% 13% 30% 21% 6% 1	330
November	1st to 10th	Day	18% 12% 31% 27% 9% 2	300
	11th to 20th	Day	18% 15% 38% 18% 9% 1	300
	21st to end	Day	33% 11% 30% 16% 7% 2	300
December	1st to 10th	Day	25% 22% 30% 14% 7% 2	300
	11th to 20th	Day	29% 18% 32% 16% 5%	300
	21st to end	Day	30% 22% 30% 14% 3	330
January	1st to 10th	Night	23% 16% 33% 24% 3	1000
	11th to 20th	Night	22% 19% 36% 19% 4	1000
	21st to end	Night	22% 14% 38% 23% 3	1100
February	1st to 10th	Night	25% 13% 34% 24% 3	976
	11th to 20th	Night	22% 17% 38% 21% 2	778
	21st to end	Night	24% 18% 37% 19% 2	628
March	1st to 10th	Night	23% 16% 31% 28% 3	632
	11th to 20th	Night	22% 13% 31% 30% 4	570
	21st to end	Night	22% 12% 35% 24% 7%	627
April	1st to 10th	Night	14% 16% 39% 25% 6%	570
	11th to 20th	Night	16% 15% 32% 28% 9% 1	563
	21st to end	Night	19% 10% 39% 25% 7% 1	570
May	1st to 10th	Night	16% 8% 29% 36% 10%	570
	11th to 20th	Night	16% 5% 29% 32% 16% 2	561
	21st to end	Night	11% 5% 24% 36% 20% 4	617
June	1st to 10th	Night	10% 3 17% 33% 33% 3	570
	11th to 20th	Night	5% 2 13% 50% 28% 3	570
	21st to end	Night	5% 2 19% 41% 31% 2	570
July	1st to 10th	Night	7% 2 9% 37% 37% 9%	555
	11th to 20th	Night	3 1 11% 35% 41% 9%	552
	21st to end	Night	8% 2 8% 38% 37% 6%	624
August	1st to 10th	Night	6% 1 9% 40% 39% 5%	567
	11th to 20th	Night	9% 1 10% 40% 36% 4	564
	21st to end	Night	6% 1 8% 37% 41% 7%	627
September	1st to 10th	Night	10% 3 10% 36% 38% 4	570
	11th to 20th	Night	11% 2 12% 31% 36% 8%	570
	21st to end	Night	10% 5% 19% 33% 29% 5%	711
October	1st to 10th	Night	9% 4 19% 35% 30% 3	760
	11th to 20th	Night	15% 8% 29% 32% 15% 1	760
	21st to end	Night	22% 8% 27% 31% 11% 1	836
November	1st to 10th	Night	15% 11% 29% 31% 13% 1	780
	11th to 20th	Night	18% 9% 31% 32% 9%	800
	21st to end	Night	20% 12% 30% 27% 11%	845
December	1st to 10th	Night	22% 12% 32% 29% 6%	1000
	11th to 20th	Night	24% 11% 29% 30% 6%	1000
	21st to end	Night	27% 15% 29% 25% 4	1100

Page generated at 2025-02-03 02:05:50. Version ac07

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