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Post by Deleted on Sept 10, 2022 22:12:20 GMT -5
I think the NWS defines a "clear day" as a day that has mean cloud cover below 30%You mean above? I'm sure he was talking about NWS "clear day" definition, so below 30% cloud cover sounds right |
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Post by Steelernation on Sept 10, 2022 22:17:00 GMT -5
No he’s right. Below 30% as in only 25% of the sky is covered |
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Post by firebird1988 on Sept 11, 2022 5:25:53 GMT -5
I think the NWS defines a "clear day" as a day that has mean cloud cover below 30%You mean above? No, that would be a partly to mostly cloudy day would have cloud cover between 30 and 70%, a cloudy day would have cloud cover above 70%, and a CLEAR day would have cloud cover BELOW 30% (meaning over 70% of the sky is clear) |
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Post by Ethereal on Sept 11, 2022 20:23:38 GMT -5
No, that would be a partly to mostly cloudy day would have cloud cover between 30 and 70%, a cloudy day would have cloud cover above 70%, and a CLEAR day would have cloud cover BELOW 30% (meaning over 70% of the sky is clear) My bad. I read it wrong. Thanks for clarifying. |
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Post by longaotian on Sept 11, 2022 23:20:27 GMT -5
NIWA doesnt collect such data, but I would definitely say Auckland gets more overcast days, as would pretty much all of NZ. Maybe excluding the area aound Blenheim.
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Post by paddy234 on Sept 24, 2022 0:21:47 GMT -5
Here in Perth it's around 140 days Being clear however i feel it's alot more given that we get 3200 sunshine hours per year on average. Obviously this number is excluding the days where there is even just 1 or 2 tiny clouds in the sky. Actual overcast days are very rare outside of winter
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Post by Ariete on Sept 24, 2022 6:42:00 GMT -5
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Post by CRISPR on Jan 19, 2024 5:18:55 GMT -5
No data in Ulladulla; but for Jervis Bay (nearest); there are 96.8 clear days and 133.9 cloudy days. Not surprised that our summers skewed the results in favour of cloud
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Post by Beercules on Jan 19, 2024 7:12:05 GMT -5
More clear days easily. Overcast days are rare to the point, that when they happen here, it feels like a glitch in the matrix. And when they do happen it almost never lasts more than 2 days. Not like Melbourne, where overcast was as common as grains of sand on the beach.
The closest sunshine data to here is from Mildura, @ 3134 hours, and that sunshine recorder has been closed for years.
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Post by desiccatedi85 on Jan 19, 2024 9:37:38 GMT -5
There are more clear days than cloudy days here in Atlanta. Possible sunshine is at 62%, you can shave a few % off of that figure as the US overestimates sunshine, but still decently over 50%. Spring and fall both feature what feels like especially long stretches of clear days.
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Post by Cadeau on Jan 23, 2024 9:33:55 GMT -5
Far less than 50% of the possible sunshine hours. I would say more cloudy days.
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