Kakabeka Falls
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kakabeka Falls clear sky chart from 2005-11-06 to 2025-02-25.

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% 10% 4 9% 5% 5% 5% 4 6% 7% 34%	108477
	Night	12% 11% 4 9% 5% 5% 5% 4 6% 7% 33%	110374
Transparency	Day	47% 6% 13% 22% 11% 1	111930
	Night	49% 6% 12% 22% 10% 1	115083
Seeing	Day	18% 16% 35% 20% 8% 2	16407
	Night	18% 11% 31% 28% 10% 1	26620

By Month

Percentage Cloud Cover NE (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	6% 12% 5% 13% 7% 5% 4 3 6% 7% 33%	3617
	11th to 20th	Day	6% 11% 6% 15% 7% 4 4 4 8% 9% 26%	3589
	21st to end	Day	8% 15% 8% 13% 6% 7% 6% 4 6% 6% 20%	3982
February	1st to 10th	Day	7% 12% 3 12% 6% 4 5% 5% 6% 7% 33%	1708
	11th to 20th	Day	8% 12% 4 8% 6% 5% 5% 4 5% 7% 36%	1758
	21st to end	Day	6% 14% 5% 10% 8% 4 4 3 6% 7% 33%	1610
March	1st to 10th	Day	12% 9% 3 7% 5% 4 4 4 5% 6% 41%	3118
	11th to 20th	Day	7% 12% 6% 10% 6% 5% 5% 3 5% 6% 36%	3347
	21st to end	Day	17% 15% 5% 10% 5% 4 3 3 4 5% 29%	4119
April	1st to 10th	Day	13% 12% 3 11% 6% 5% 4 4 5% 7% 30%	2280
	11th to 20th	Day	17% 11% 4 11% 5% 4 4 4 5% 6% 29%	2254
	21st to end	Day	17% 12% 4 7% 5% 4 4 4 4 5% 33%	2546
May	1st to 10th	Day	18% 10% 3 7% 4 4 4 3 4 6% 37%	4428
	11th to 20th	Day	14% 8% 3 8% 5% 5% 4 4 6% 7% 38%	4399
	21st to end	Day	15% 8% 3 7% 5% 4 4 4 6% 6% 38%	4837
June	1st to 10th	Day	14% 8% 3 7% 4 5% 5% 4 6% 8% 37%	2660
	11th to 20th	Day	14% 6% 3 7% 5% 5% 5% 4 7% 7% 37%	2660
	21st to end	Day	17% 6% 2 6% 5% 4 5% 5% 7% 7% 36%	2660
July	1st to 10th	Day	9% 4 1 7% 6% 6% 7% 5% 8% 9% 36%	4440
	11th to 20th	Day	9% 4 2 6% 4 5% 5% 5% 8% 9% 43%	4440
	21st to end	Day	10% 5% 2 5% 4 5% 4 4 7% 10% 43%	4814
August	1st to 10th	Day	8% 6% 3 8% 6% 6% 6% 6% 8% 9% 34%	4423
	11th to 20th	Day	13% 4 1 5% 4 4 5% 4 6% 8% 46%	4265
	21st to end	Day	11% 6% 2 6% 4 4 4 5% 7% 9% 41%	4185
September	1st to 10th	Day	11% 5% 2 7% 5% 6% 5% 4 6% 8% 41%	2280
	11th to 20th	Day	14% 7% 2 7% 4 5% 5% 4 6% 9% 37%	2241
	21st to end	Day	15% 11% 3 6% 5% 5% 4 4 5% 7% 34%	2080
October	1st to 10th	Day	16% 12% 3 8% 5% 4 3 4 6% 6% 33%	1900
	11th to 20th	Day	18% 13% 4 8% 5% 5% 4 3 7% 7% 26%	1851
	21st to end	Day	19% 15% 4 8% 5% 4 5% 3 5% 6% 27%	1881
November	1st to 10th	Day	13% 12% 4 11% 7% 7% 6% 4 6% 6% 25%	1718
	11th to 20th	Day	15% 16% 5% 10% 6% 5% 4 4 5% 6% 23%	1600
	21st to end	Day	15% 13% 5% 10% 5% 5% 4 4 6% 7% 26%	1600
December	1st to 10th	Day	11% 13% 4 14% 7% 6% 6% 4 5% 6% 23%	2424
	11th to 20th	Day	8% 16% 6% 14% 5% 4 4 3 4 5% 31%	2781
	21st to end	Day	20% 21% 5% 8% 4 3 4 3 5% 5% 22%	3982
January	1st to 10th	Night	6% 13% 4 12% 6% 6% 6% 4 6% 6% 31%	6348
	11th to 20th	Night	6% 11% 6% 17% 8% 5% 6% 6% 8% 7% 21%	6316
	21st to end	Night	6% 14% 7% 14% 7% 5% 5% 4 5% 7% 25%	6996
February	1st to 10th	Night	8% 10% 3 10% 6% 6% 6% 4 6% 8% 32%	2690
	11th to 20th	Night	9% 9% 3 8% 6% 7% 6% 5% 7% 7% 34%	2528
	21st to end	Night	8% 12% 4 11% 7% 4 6% 5% 6% 8% 29%	1939
March	1st to 10th	Night	11% 11% 3 9% 5% 4 5% 4 5% 6% 36%	3722
	11th to 20th	Night	9% 13% 4 9% 6% 6% 6% 4 5% 7% 32%	3641
	21st to end	Night	17% 13% 4 8% 6% 4 4 3 4 6% 30%	3512
April	1st to 10th	Night	12% 12% 4 8% 7% 5% 4 4 6% 6% 33%	1900
	11th to 20th	Night	15% 12% 3 7% 4 4 4 4 6% 7% 32%	1875
	21st to end	Night	17% 10% 2 9% 5% 4 5% 4 6% 5% 33%	1631
May	1st to 10th	Night	19% 6% 2 5% 4 4 3 4 6% 8% 40%	2523
	11th to 20th	Night	13% 7% 3 8% 6% 5% 5% 3 6% 6% 37%	2506
	21st to end	Night	20% 7% 2 6% 4 4 4 4 5% 6% 39%	2750
June	1st to 10th	Night	15% 8% 3 6% 5% 5% 5% 4 5% 6% 36%	1520
	11th to 20th	Night	12% 8% 3 5% 5% 3 5% 5% 5% 8% 40%	1520
	21st to end	Night	14% 7% 2 7% 4 4 4 4 7% 8% 40%	1520
July	1st to 10th	Night	7% 6% 2 6% 4 4 5% 4 7% 10% 44%	2530
	11th to 20th	Night	6% 4 2 5% 5% 4 5% 4 7% 8% 51%	2530
	21st to end	Night	9% 4 2 5% 3 3 3 4 7% 9% 51%	2750
August	1st to 10th	Night	11% 4 2 5% 4 3 5% 4 7% 10% 44%	2517
	11th to 20th	Night	11% 3 1 5% 4 4 4 4 7% 9% 48%	2572
	21st to end	Night	16% 6% 2 7% 3 3 3 3 5% 6% 45%	3471
September	1st to 10th	Night	12% 5% 2 4 4 3 4 4 6% 6% 50%	1900
	11th to 20th	Night	12% 7% 2 6% 4 4 3 3 7% 8% 44%	1919
	21st to end	Night	17% 6% 3 8% 4 4 4 4 6% 7% 37%	2099
October	1st to 10th	Night	16% 9% 3 7% 4 4 4 3 4 6% 39%	2280
	11th to 20th	Night	13% 12% 3 8% 4 4 5% 4 5% 7% 34%	2328
	21st to end	Night	17% 12% 4 9% 5% 4 5% 4 5% 7% 28%	2717
November	1st to 10th	Night	14% 11% 4 9% 6% 4 6% 4 6% 7% 28%	2576
	11th to 20th	Night	16% 13% 6% 11% 6% 5% 4 3 5% 6% 24%	2800
	21st to end	Night	14% 13% 5% 11% 6% 5% 6% 4 6% 8% 24%	2800
December	1st to 10th	Night	11% 16% 5% 12% 7% 6% 6% 5% 7% 6% 21%	4745
	11th to 20th	Night	9% 13% 6% 13% 6% 5% 4 3 5% 7% 29%	5407
	21st to end	Night	20% 20% 5% 9% 5% 3 4 3 4 5% 22%	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	50% 5% 9% 20% 14% 2	3618
	11th to 20th	Day	53% 4 7% 28% 7%	3620
	21st to end	Day	63% 5% 7% 15% 9%	3982
February	1st to 10th	Day	48% 7% 13% 18% 12% 2	1708
	11th to 20th	Day	47% 5% 13% 25% 9% 1	1767
	21st to end	Day	50% 6% 12% 17% 15% 1	1610
March	1st to 10th	Day	43% 6% 13% 20% 16% 3	3120
	11th to 20th	Day	46% 8% 11% 20% 12% 1	3347
	21st to end	Day	57% 5% 8% 14% 14% 2	4119
April	1st to 10th	Day	52% 6% 9% 19% 12% 2	2280
	11th to 20th	Day	54% 5% 11% 20% 9% 1	2254
	21st to end	Day	52% 6% 9% 17% 15% 1	2546
May	1st to 10th	Day	46% 6% 11% 20% 16% 1	4440
	11th to 20th	Day	43% 8% 11% 24% 12% 1	4403
	21st to end	Day	44% 10% 12% 15% 18% 2	4837
June	1st to 10th	Day	42% 8% 13% 21% 14% 1	2660
	11th to 20th	Day	43% 8% 12% 22% 13% 1	2660
	21st to end	Day	44% 8% 15% 22% 11% 1	2660
July	1st to 10th	Day	39% 7% 18% 25% 11% 1	4371
	11th to 20th	Day	35% 6% 18% 34% 8%	4365
	21st to end	Day	35% 6% 16% 34% 9% 1	4662
August	1st to 10th	Day	43% 6% 16% 26% 9% 1	4408
	11th to 20th	Day	36% 5% 21% 29% 10%	4307
	21st to end	Day	38% 5% 17% 30% 10%	4184
September	1st to 10th	Day	39% 8% 15% 28% 9%	2280
	11th to 20th	Day	42% 9% 21% 24% 4	2241
	21st to end	Day	47% 8% 15% 23% 6% 1	2080
October	1st to 10th	Day	42% 4 12% 29% 11% 1	3160
	11th to 20th	Day	50% 5% 11% 28% 5%	3054
	21st to end	Day	57% 5% 14% 19% 6%	3081
November	1st to 10th	Day	57% 7% 14% 15% 6% 1	1718
	11th to 20th	Day	62% 7% 10% 16% 5%	1600
	21st to end	Day	55% 9% 14% 16% 6% 1	1600
December	1st to 10th	Day	60% 5% 17% 14% 4	2424
	11th to 20th	Day	58% 3 10% 11% 16% 2	2782
	21st to end	Day	67% 3 6% 18% 6%	3982
January	1st to 10th	Night	52% 5% 10% 19% 12% 1	6348
	11th to 20th	Night	59% 4 7% 20% 9%	6360
	21st to end	Night	59% 6% 9% 16% 10%	6996
February	1st to 10th	Night	48% 6% 13% 20% 11% 2	2690
	11th to 20th	Night	47% 5% 13% 22% 11% 1	2529
	21st to end	Night	52% 6% 10% 19% 12% 1	1939
March	1st to 10th	Night	47% 7% 12% 16% 16% 2	3733
	11th to 20th	Night	48% 8% 13% 19% 10% 1	3642
	21st to end	Night	54% 5% 8% 17% 14% 1	3512
April	1st to 10th	Night	51% 6% 9% 19% 15%	1900
	11th to 20th	Night	49% 5% 10% 22% 12% 2	1875
	21st to end	Night	51% 5% 8% 22% 13% 2	1631
May	1st to 10th	Night	41% 5% 13% 26% 14%	2530
	11th to 20th	Night	45% 8% 9% 23% 11% 4	2507
	21st to end	Night	45% 8% 10% 22% 14% 1	2751
June	1st to 10th	Night	46% 7% 11% 21% 13% 1	1520
	11th to 20th	Night	41% 7% 11% 25% 15% 1	1520
	21st to end	Night	40% 9% 16% 23% 11% 1	1520
July	1st to 10th	Night	36% 6% 23% 22% 13% 1	2490
	11th to 20th	Night	30% 5% 17% 36% 10%	2482
	21st to end	Night	29% 5% 16% 36% 12% 1	2662
August	1st to 10th	Night	35% 5% 20% 30% 9% 1	2508
	11th to 20th	Night	33% 5% 19% 34% 9%	2596
	21st to end	Night	42% 5% 15% 29% 9%	3471
September	1st to 10th	Night	33% 7% 16% 31% 12% 1	1900
	11th to 20th	Night	38% 8% 21% 30% 4	1919
	21st to end	Night	44% 7% 16% 26% 6%	2099
October	1st to 10th	Night	36% 4 14% 29% 17%	3800
	11th to 20th	Night	46% 5% 12% 27% 9%	3864
	21st to end	Night	56% 4 15% 18% 6%	4467
November	1st to 10th	Night	53% 8% 14% 20% 6%	2576
	11th to 20th	Night	60% 7% 12% 16% 5%	2800
	21st to end	Night	57% 7% 14% 17% 6%	2800
December	1st to 10th	Night	61% 5% 16% 15% 3	4745
	11th to 20th	Night	57% 4 11% 17% 11%	5405
	21st to end	Night	68% 3 6% 17% 6%	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	13% 15% 38% 25% 8%	300
	11th to 20th	Day	16% 15% 37% 24% 7% 1	300
	21st to end	Day	15% 16% 42% 23% 4 1	330
February	1st to 10th	Day	17% 17% 43% 17% 6%	300
	11th to 20th	Day	13% 25% 38% 21% 4 1	300
	21st to end	Day	13% 29% 41% 15% 2	237
March	1st to 10th	Day	14% 20% 46% 16% 3	270
	11th to 20th	Day	17% 26% 36% 14% 6% 1	270
	21st to end	Day	20% 19% 35% 18% 7% 1	473
April	1st to 10th	Day	21% 15% 36% 21% 6%	460
	11th to 20th	Day	24% 19% 27% 20% 8% 1	452
	21st to end	Day	26% 15% 31% 19% 8% 2	550
May	1st to 10th	Day	21% 24% 32% 16% 6% 2	653
	11th to 20th	Day	19% 17% 37% 18% 7% 3	675
	21st to end	Day	20% 17% 35% 19% 7% 2	734
June	1st to 10th	Day	19% 15% 40% 17% 7% 2	680
	11th to 20th	Day	18% 15% 38% 19% 7% 3	680
	21st to end	Day	18% 14% 36% 22% 9% 2	680
July	1st to 10th	Day	11% 11% 36% 26% 11% 4	671
	11th to 20th	Day	11% 13% 38% 22% 11% 5%	668
	21st to end	Day	9% 12% 38% 23% 13% 5%	739
August	1st to 10th	Day	12% 12% 37% 26% 9% 4	676
	11th to 20th	Day	14% 9% 29% 28% 14% 6%	665
	21st to end	Day	21% 11% 30% 22% 13% 3	544
September	1st to 10th	Day	13% 12% 33% 23% 15% 4	490
	11th to 20th	Day	18% 12% 30% 24% 13% 3	490
	21st to end	Day	21% 15% 31% 19% 12% 2	480
October	1st to 10th	Day	24% 21% 31% 16% 8% 1	300
	11th to 20th	Day	24% 20% 37% 16% 3	300
	21st to end	Day	27% 25% 36% 10% 1 1	330
November	1st to 10th	Day	24% 23% 27% 20% 5% 1	300
	11th to 20th	Day	29% 19% 37% 10% 4 1	300
	21st to end	Day	28% 19% 31% 16% 5%	300
December	1st to 10th	Day	20% 16% 33% 24% 5% 2	245
	11th to 20th	Day	24% 19% 35% 16% 5%	235
	21st to end	Day	23% 20% 31% 18% 7% 2	330
January	1st to 10th	Night	15% 15% 39% 26% 6%	1000
	11th to 20th	Night	19% 13% 38% 25% 6% 1	1000
	21st to end	Night	17% 12% 38% 26% 7%	1100
February	1st to 10th	Night	15% 13% 38% 26% 7% 1	1000
	11th to 20th	Night	16% 14% 34% 27% 7% 1	974
	21st to end	Night	14% 13% 39% 26% 7%	647
March	1st to 10th	Night	15% 13% 34% 30% 7% 1	760
	11th to 20th	Night	18% 16% 32% 24% 9%	667
	21st to end	Night	19% 11% 28% 28% 12% 3	627
April	1st to 10th	Night	18% 12% 30% 30% 9% 1	570
	11th to 20th	Night	21% 13% 26% 29% 10% 1	563
	21st to end	Night	22% 7% 26% 33% 11% 1	570
May	1st to 10th	Night	22% 11% 25% 31% 10% 1	570
	11th to 20th	Night	17% 8% 30% 32% 11% 1	561
	21st to end	Night	21% 8% 25% 35% 11% 1	617
June	1st to 10th	Night	20% 6% 27% 34% 12% 1	570
	11th to 20th	Night	16% 8% 24% 40% 12% 1	570
	21st to end	Night	16% 7% 26% 36% 14% 1	570
July	1st to 10th	Night	11% 5% 27% 39% 16% 1	555
	11th to 20th	Night	10% 6% 29% 36% 18% 1	552
	21st to end	Night	8% 4 27% 37% 22% 2	624
August	1st to 10th	Night	10% 5% 31% 38% 15% 1	567
	11th to 20th	Night	12% 6% 20% 34% 25% 3	564
	21st to end	Night	19% 6% 24% 34% 17% 2	627
September	1st to 10th	Night	14% 6% 24% 32% 21% 3	570
	11th to 20th	Night	19% 7% 28% 32% 13% 2	589
	21st to end	Night	20% 10% 25% 31% 12% 1	760
October	1st to 10th	Night	22% 14% 29% 22% 12% 1	760
	11th to 20th	Night	21% 13% 33% 25% 8%	760
	21st to end	Night	24% 13% 31% 25% 7%	836
November	1st to 10th	Night	21% 13% 33% 24% 8% 1	820
	11th to 20th	Night	24% 15% 33% 18% 8% 2	1000
	21st to end	Night	23% 18% 30% 23% 6%	1000
December	1st to 10th	Night	19% 16% 34% 23% 8% 1	1000
	11th to 20th	Night	20% 15% 33% 23% 8% 1	1000
	21st to end	Night	26% 15% 31% 22% 5% 1	1100

Page generated at 2025-02-22 06:51:36. Version ac07

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