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 2024-02-05.

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	13% 10% 4 7% 6% 3 5% 5% 6% 7% 33%	77839
	Night	13% 10% 4 8% 6% 3 5% 5% 6% 7% 33%	81043
Transparency	Day	48% 8% 12% 21% 10% 1	77545
	Night	50% 7% 13% 21% 9% 1	80871
Seeing	Day	18% 17% 35% 20% 8% 2	14952
	Night	18% 12% 31% 28% 10% 1	25145

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	9% 13% 5% 11% 8% 4 4 4 6% 8% 28%	2527
	11th to 20th	Day	6% 9% 6% 13% 10% 3 5% 5% 6% 8% 27%	2530
	21st to end	Day	10% 16% 10% 13% 8% 4 5% 4 5% 7% 18%	2783
February	1st to 10th	Day	8% 11% 4 10% 7% 2 5% 6% 6% 7% 35%	1569
	11th to 20th	Day	9% 11% 4 7% 7% 3 5% 6% 5% 7% 36%	1577
	21st to end	Day	7% 13% 6% 9% 8% 3 5% 4 5% 7% 33%	1480
March	1st to 10th	Day	10% 10% 5% 7% 7% 3 5% 5% 5% 5% 38%	1798
	11th to 20th	Day	13% 11% 4 7% 6% 3 5% 4 5% 6% 36%	1903
	21st to end	Day	14% 10% 5% 8% 7% 3 5% 5% 5% 7% 31%	2344
April	1st to 10th	Day	13% 11% 4 9% 8% 4 4 5% 5% 7% 30%	2160
	11th to 20th	Day	17% 11% 4 10% 6% 3 5% 5% 5% 6% 29%	2134
	21st to end	Day	18% 10% 5% 6% 6% 4 4 5% 4 5% 34%	2411
May	1st to 10th	Day	16% 10% 4 7% 6% 4 6% 5% 5% 6% 32%	2520
	11th to 20th	Day	15% 8% 3 7% 6% 3 4 4 6% 8% 35%	2479
	21st to end	Day	17% 7% 3 6% 5% 3 5% 5% 5% 7% 37%	2725
June	1st to 10th	Day	14% 6% 3 6% 5% 3 5% 5% 6% 9% 38%	2520
	11th to 20th	Day	14% 6% 3 6% 5% 4 6% 5% 6% 8% 38%	2520
	21st to end	Day	17% 6% 2 5% 6% 3 5% 6% 7% 8% 36%	2520
July	1st to 10th	Day	9% 4 2 5% 6% 4 6% 5% 7% 8% 44%	2520
	11th to 20th	Day	10% 6% 3 6% 7% 4 6% 6% 7% 8% 38%	2520
	21st to end	Day	9% 4 2 5% 6% 4 6% 6% 6% 9% 41%	2743
August	1st to 10th	Day	8% 5% 3 6% 7% 4 6% 6% 7% 9% 38%	2507
	11th to 20th	Day	12% 4 2 5% 5% 4 5% 6% 6% 7% 43%	2430
	21st to end	Day	13% 5% 3 4 5% 3 4 5% 6% 8% 42%	2381
September	1st to 10th	Day	12% 5% 2 6% 6% 4 5% 5% 5% 8% 41%	2160
	11th to 20th	Day	14% 6% 3 6% 6% 4 5% 5% 6% 9% 36%	2124
	21st to end	Day	16% 11% 3 6% 6% 4 5% 5% 5% 8% 32%	1971
October	1st to 10th	Day	17% 12% 4 7% 6% 3 3 5% 5% 7% 31%	1800
	11th to 20th	Day	18% 12% 5% 7% 7% 4 4 5% 7% 7% 25%	1754
	21st to end	Day	20% 15% 4 7% 5% 3 5% 4 4 5% 27%	1782
November	1st to 10th	Day	14% 12% 4 9% 8% 5% 6% 5% 5% 6% 26%	1631
	11th to 20th	Day	15% 14% 7% 9% 7% 4 5% 5% 6% 5% 23%	1520
	21st to end	Day	16% 13% 5% 8% 6% 4 5% 4 6% 8% 27%	1520
December	1st to 10th	Day	11% 11% 5% 11% 6% 4 6% 5% 5% 6% 28%	1418
	11th to 20th	Day	12% 14% 5% 10% 7% 3 5% 4 4 7% 28%	1775
	21st to end	Day	25% 21% 5% 7% 5% 2 3 3 3 4 22%	2783
January	1st to 10th	Night	9% 15% 6% 9% 5% 3 5% 5% 6% 7% 30%	4428
	11th to 20th	Night	6% 10% 6% 16% 13% 5% 5% 5% 7% 7% 21%	4440
	21st to end	Night	8% 16% 9% 13% 8% 4 5% 5% 5% 6% 21%	4884
February	1st to 10th	Night	7% 10% 4 9% 7% 4 6% 6% 6% 8% 33%	2484
	11th to 20th	Night	10% 8% 4 6% 7% 5% 7% 6% 6% 7% 35%	2269
	21st to end	Night	8% 11% 6% 9% 8% 4 5% 7% 6% 8% 28%	1776
March	1st to 10th	Night	9% 9% 4 9% 7% 4 5% 6% 6% 7% 33%	2149
	11th to 20th	Night	12% 10% 5% 6% 5% 3 5% 5% 4 9% 37%	2071
	21st to end	Night	13% 10% 4 7% 7% 3 5% 5% 5% 8% 34%	2012
April	1st to 10th	Night	13% 10% 4 7% 8% 4 5% 5% 6% 6% 32%	1800
	11th to 20th	Night	16% 12% 4 6% 5% 4 4 5% 6% 7% 32%	1775
	21st to end	Night	17% 9% 3 8% 6% 4 5% 5% 5% 5% 32%	1546
May	1st to 10th	Night	19% 6% 3 6% 5% 4 4 5% 6% 8% 33%	1440
	11th to 20th	Night	15% 6% 4 5% 6% 4 5% 5% 5% 8% 37%	1416
	21st to end	Night	17% 7% 4 6% 5% 3 5% 5% 5% 8% 37%	1551
June	1st to 10th	Night	15% 7% 3 5% 6% 4 6% 6% 5% 7% 37%	1440
	11th to 20th	Night	12% 7% 3 5% 5% 3 5% 6% 5% 8% 40%	1440
	21st to end	Night	15% 6% 2 5% 5% 3 4 4 7% 8% 41%	1440
July	1st to 10th	Night	8% 4 2 5% 5% 3 5% 5% 7% 9% 48%	1440
	11th to 20th	Night	8% 5% 2 5% 5% 3 5% 5% 6% 8% 48%	1440
	21st to end	Night	7% 3 2 4 5% 3 4 5% 7% 9% 50%	1575
August	1st to 10th	Night	9% 4 3 5% 5% 2 4 5% 6% 10% 48%	1432
	11th to 20th	Night	9% 4 2 4 4 3 5% 4 7% 9% 50%	1469
	21st to end	Night	15% 5% 2 4 4 3 4 4 6% 7% 46%	1975
September	1st to 10th	Night	13% 5% 2 3 5% 3 4 5% 6% 6% 50%	1800
	11th to 20th	Night	13% 6% 2 5% 5% 3 3 4 6% 7% 44%	1818
	21st to end	Night	18% 6% 4 7% 5% 3 4 5% 7% 7% 35%	1988
October	1st to 10th	Night	17% 9% 3 6% 5% 3 4 4 4 6% 37%	2160
	11th to 20th	Night	14% 11% 4 6% 5% 3 5% 6% 5% 7% 33%	2205
	21st to end	Night	16% 11% 5% 8% 7% 3 5% 4 5% 7% 29%	2574
November	1st to 10th	Night	14% 10% 4 8% 7% 3 6% 5% 6% 7% 28%	2444
	11th to 20th	Night	16% 12% 7% 10% 8% 4 5% 4 5% 6% 24%	2660
	21st to end	Night	14% 12% 5% 10% 7% 3 5% 5% 5% 8% 25%	2660
December	1st to 10th	Night	10% 12% 5% 11% 6% 4 4 5% 7% 7% 29%	2755
	11th to 20th	Night	12% 13% 6% 9% 6% 3 4 4 6% 7% 30%	3403
	21st to end	Night	24% 20% 6% 9% 5% 2 3 3 3 4 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	52% 8% 11% 20% 9%	2528
	11th to 20th	Day	54% 6% 9% 26% 4	2530
	21st to end	Day	65% 8% 8% 13% 5%	2783
February	1st to 10th	Day	47% 7% 13% 19% 12% 2	1569
	11th to 20th	Day	46% 5% 13% 25% 10% 1	1586
	21st to end	Day	49% 6% 12% 17% 15% 1	1480
March	1st to 10th	Day	47% 7% 11% 20% 13% 3	1800
	11th to 20th	Day	49% 7% 10% 20% 12% 2	1903
	21st to end	Day	52% 6% 12% 15% 13% 2	2344
April	1st to 10th	Day	53% 6% 9% 19% 11% 2	2160
	11th to 20th	Day	55% 5% 11% 19% 9% 1	2134
	21st to end	Day	52% 6% 9% 17% 15% 2	2411
May	1st to 10th	Day	52% 8% 10% 20% 10% 1	2520
	11th to 20th	Day	47% 7% 12% 22% 11% 1	2483
	21st to end	Day	45% 10% 11% 19% 14% 2	2725
June	1st to 10th	Day	42% 8% 13% 21% 14% 1	2520
	11th to 20th	Day	42% 8% 12% 23% 14% 1	2520
	21st to end	Day	43% 8% 15% 23% 10% 1	2520
July	1st to 10th	Day	34% 9% 13% 27% 16% 1	2451
	11th to 20th	Day	38% 10% 13% 27% 11% 1	2445
	21st to end	Day	35% 10% 15% 28% 11% 1	2591
August	1st to 10th	Day	37% 11% 16% 26% 8% 1	2492
	11th to 20th	Day	37% 9% 16% 26% 12%	2430
	21st to end	Day	37% 8% 15% 27% 12%	2381
September	1st to 10th	Day	40% 9% 14% 28% 9%	2160
	11th to 20th	Day	43% 9% 19% 23% 4 1	2124
	21st to end	Day	49% 8% 16% 22% 5%	1971
October	1st to 10th	Day	52% 7% 14% 23% 4	1800
	11th to 20th	Day	55% 8% 12% 20% 4 1	1754
	21st to end	Day	59% 7% 11% 17% 6%	1782
November	1st to 10th	Day	57% 8% 14% 15% 6% 1	1631
	11th to 20th	Day	62% 7% 10% 16% 5%	1520
	21st to end	Day	54% 9% 14% 15% 6% 1	1520
December	1st to 10th	Day	55% 8% 14% 18% 5%	1418
	11th to 20th	Day	57% 5% 13% 12% 9% 3	1776
	21st to end	Day	69% 4 6% 16% 5%	2783
January	1st to 10th	Night	51% 7% 14% 21% 6%	4428
	11th to 20th	Night	61% 6% 10% 18% 4	4440
	21st to end	Night	62% 8% 11% 13% 6%	4884
February	1st to 10th	Night	48% 7% 13% 20% 10% 2	2484
	11th to 20th	Night	47% 5% 14% 22% 12% 1	2270
	21st to end	Night	52% 7% 10% 18% 12% 1	1776
March	1st to 10th	Night	48% 8% 11% 19% 12% 2	2160
	11th to 20th	Night	45% 6% 13% 21% 13% 2	2072
	21st to end	Night	48% 6% 12% 20% 12% 3	2012
April	1st to 10th	Night	51% 6% 9% 19% 14%	1800
	11th to 20th	Night	50% 5% 9% 21% 12% 2	1775
	21st to end	Night	51% 5% 8% 21% 13% 2	1546
May	1st to 10th	Night	48% 6% 12% 21% 12%	1440
	11th to 20th	Night	44% 8% 10% 22% 13% 2	1417
	21st to end	Night	46% 7% 11% 23% 13% 1	1552
June	1st to 10th	Night	46% 7% 12% 21% 13% 1	1440
	11th to 20th	Night	41% 8% 11% 24% 15% 1	1440
	21st to end	Night	39% 10% 16% 22% 11% 2	1440
July	1st to 10th	Night	32% 7% 16% 28% 16% 1	1400
	11th to 20th	Night	32% 8% 14% 32% 13% 1	1392
	21st to end	Night	29% 9% 20% 28% 13% 1	1487
August	1st to 10th	Night	30% 8% 22% 29% 9% 2	1423
	11th to 20th	Night	30% 8% 17% 34% 10% 1	1469
	21st to end	Night	37% 7% 15% 29% 11%	1975
September	1st to 10th	Night	33% 7% 16% 31% 12% 1	1800
	11th to 20th	Night	38% 8% 20% 31% 4	1818
	21st to end	Night	46% 8% 16% 26% 5%	1988
October	1st to 10th	Night	47% 7% 16% 23% 7%	2160
	11th to 20th	Night	48% 8% 15% 23% 5%	2205
	21st to end	Night	55% 6% 15% 17% 6%	2574
November	1st to 10th	Night	53% 8% 14% 19% 6%	2444
	11th to 20th	Night	60% 8% 12% 15% 6%	2660
	21st to end	Night	56% 7% 15% 16% 6%	2660
December	1st to 10th	Night	52% 8% 14% 20% 5%	2755
	11th to 20th	Night	53% 6% 13% 20% 8%	3401
	21st to end	Night	69% 5% 7% 15% 4	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	15% 17% 38% 23% 7%	270
	11th to 20th	Day	16% 16% 37% 23% 7% 1	270
	21st to end	Day	15% 16% 41% 23% 3 1	297
February	1st to 10th	Day	17% 17% 44% 17% 4 1	252
	11th to 20th	Day	15% 29% 37% 15% 3 1	240
	21st to end	Day	14% 30% 41% 14% 1	198
March	1st to 10th	Day	12% 21% 45% 18% 3	240
	11th to 20th	Day	18% 25% 34% 15% 7% 1	240
	21st to end	Day	20% 19% 34% 18% 8% 2	430
April	1st to 10th	Day	22% 14% 36% 21% 6%	420
	11th to 20th	Day	24% 19% 26% 21% 9% 1	412
	21st to end	Day	26% 15% 31% 19% 8% 2	505
May	1st to 10th	Day	21% 23% 32% 16% 6% 2	603
	11th to 20th	Day	19% 16% 37% 18% 7% 3	625
	21st to end	Day	20% 16% 35% 20% 6% 2	679
June	1st to 10th	Day	17% 14% 40% 18% 8% 2	630
	11th to 20th	Day	17% 15% 38% 19% 7% 3	630
	21st to end	Day	17% 14% 36% 22% 9% 2	630
July	1st to 10th	Day	12% 12% 37% 26% 10% 3	621
	11th to 20th	Day	12% 13% 39% 22% 10% 4	618
	21st to end	Day	9% 13% 39% 23% 12% 5%	684
August	1st to 10th	Day	12% 13% 38% 25% 8% 3	626
	11th to 20th	Day	14% 10% 30% 28% 13% 5%	615
	21st to end	Day	21% 12% 30% 23% 12% 3	500
September	1st to 10th	Day	13% 12% 34% 23% 14% 3	450
	11th to 20th	Day	20% 13% 31% 23% 10% 3	450
	21st to end	Day	23% 16% 31% 17% 11% 2	441
October	1st to 10th	Day	25% 19% 31% 17% 8% 1	270
	11th to 20th	Day	23% 21% 36% 16% 3	270
	21st to end	Day	28% 26% 35% 10% 1	297
November	1st to 10th	Day	24% 24% 27% 20% 4 1	270
	11th to 20th	Day	28% 21% 38% 9% 3 1	270
	21st to end	Day	30% 20% 31% 14% 5%	270
December	1st to 10th	Day	20% 18% 32% 22% 5% 2	221
	11th to 20th	Day	25% 20% 34% 17% 3	211
	21st to end	Day	23% 22% 33% 18% 4 1	297
January	1st to 10th	Night	15% 16% 40% 24% 5%	950
	11th to 20th	Night	18% 13% 38% 24% 6% 1	950
	21st to end	Night	17% 12% 39% 25% 7%	1045
February	1st to 10th	Night	15% 13% 38% 25% 8% 1	923
	11th to 20th	Night	17% 15% 35% 25% 8% 1	875
	21st to end	Night	14% 14% 40% 25% 7% 1	592
March	1st to 10th	Night	15% 12% 34% 31% 7% 1	720
	11th to 20th	Night	19% 16% 31% 25% 9%	632
	21st to end	Night	18% 11% 27% 28% 12% 3	594
April	1st to 10th	Night	18% 12% 30% 29% 9% 1	540
	11th to 20th	Night	21% 13% 25% 29% 11% 1	533
	21st to end	Night	21% 6% 27% 33% 11% 1	540
May	1st to 10th	Night	21% 11% 25% 31% 10% 1	540
	11th to 20th	Night	18% 8% 30% 32% 11% 1	531
	21st to end	Night	21% 8% 25% 34% 11% 1	584
June	1st to 10th	Night	20% 5% 27% 35% 13% 1	540
	11th to 20th	Night	16% 8% 24% 39% 12% 1	540
	21st to end	Night	16% 7% 25% 36% 15% 1	540
July	1st to 10th	Night	11% 6% 28% 40% 15% 1	525
	11th to 20th	Night	10% 6% 31% 35% 17% 1	522
	21st to end	Night	8% 4 28% 38% 20% 1	591
August	1st to 10th	Night	10% 5% 32% 37% 15% 1	537
	11th to 20th	Night	12% 6% 21% 34% 24% 3	534
	21st to end	Night	18% 6% 25% 34% 16% 2	594
September	1st to 10th	Night	14% 6% 24% 33% 20% 3	540
	11th to 20th	Night	19% 7% 29% 32% 12% 2	558
	21st to end	Night	21% 11% 26% 29% 12% 2	720
October	1st to 10th	Night	23% 14% 27% 22% 13% 1	720
	11th to 20th	Night	21% 13% 33% 24% 8%	720
	21st to end	Night	23% 14% 32% 25% 7%	792
November	1st to 10th	Night	21% 13% 33% 23% 8% 1	778
	11th to 20th	Night	23% 16% 34% 18% 8% 2	950
	21st to end	Night	23% 19% 30% 23% 5%	950
December	1st to 10th	Night	18% 16% 35% 22% 8% 1	950
	11th to 20th	Night	20% 16% 32% 23% 8% 1	950
	21st to end	Night	26% 16% 32% 20% 5% 1	1045

Page generated at 2024-02-02 05:20:29. Version ac07

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