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Location: The western periphery of Terra Australis
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Quote:
Originally Posted by Or3g0n
It averages 2,150 hours of sunshine in Victoria... 2,300 in Seattle, 2,400 in Portland, and 3,000 hours in Medford. Sunniest spot in world is Yuma, Arizona with 4,050 hours of sunshine, second in america comes Redding at 3,950 hours of sunshine (100 miles south of Medford, Oregon) Boise, Idaho and Eastern Oregon also averages 2,900 to 3,050 hours of sunshine. Spokane in Eastern Washington averages 2,600 hours of sunshine.
Are you sure that's right? I've seen figures around 2150 quoted for Seattle, it seems to be about the same cloudiness as Melbourne.
Are you sure that's right? I've seen figures around 2150 quoted for Seattle, it seems to be about the same cloudiness as Melbourne.
Of course these things are a matter of perspective but it's funny how Seattle has this reputation for neverending gloomy weather. 2150 hours seems a hell of a lot to me as I'd say it's more than half of all Europeans get; I know the winters are wet but only Nov-Jan seems gloomy to me. A normal year there would be a record-breakingly sunny one here by some way.
Are you sure that's right? I've seen figures around 2150 quoted for Seattle, it seems to be about the same cloudiness as Melbourne.
Here's the monthly %possible values for Seattle C.O. that I have from a US table:
28 34 42 47 52 49 63 56 53 37 28 23
The annual amount quoted is 43%, but that's been obtained by just averaging the monthly % values. The result is too low (because the summer ones are higher % values), so one needs a total of astronomically possible hours for each month to convert the percentages to hours and do an addition.
Note: airport values are a bit higher, with a similarly calculated average of 47%.
Here's the monthly %possible values for Seattle C.O. that I have from a US table:
28 34 42 47 52 49 63 56 53 37 28 23
The annual amount quoted is 43%, but that's been obtained by just averaging the monthly % values. The result is too low (because the summer ones are higher % values), so one needs a total of astronomically possible hours for each month to convert the percentages to hours and do an addition.
Note: airport values are a bit higher, with a similarly calculated average of 47%.
I do not believe this data for summer sunshine percentage. It is more at 80%.
I do not believe this data for summer sunshine percentage. It is more at 80%.
Wikipedia gives June as 267 hours, nine hours a day, and July 313 hours, ten hours a day. Assuming the days then are 15 hours or so long something in the 60s% seems feasible.
Of course these things are a matter of perspective but it's funny how Seattle has this reputation for neverending gloomy weather. 2150 hours seems a hell of a lot to me as I'd say it's more than half of all Europeans get; I know the winters are wet but only Nov-Jan seems gloomy to me. A normal year there would be a record-breakingly sunny one here by some way.
From what I've gathered, England often has occasional sun mixed its cloudy days, while Seattle has long stretches of cloudy wet weather and then some sunny days. So Seattle might feel worse than London.
From what I've gathered, England often has occasional sun mixed its cloudy days, while Seattle has long stretches of cloudy wet weather and then some sunny days. So Seattle might feel worse than London.
How many days with no sunshine at all do they get, if records exist?
How many days with no sunshine at all do they get, if records exist?
The US weather service defines cloudy 80% or more of the sky is covered in clouds. And defines a sunny day as a day where 30% or less of the sky is covered in clouds. I think the UK defines cloudy as 100% covered? Because I remember you said London has 50-60 cloudy days while we have 160 days.
Last March in Seattle, 15 days were cloudy (80% or more) while 4 were 100%, 8 were 90%. In July 2010, 6 days were cloudy and only 1 was 100%; likely less cloudy than New England.
Wikipedia gives June as 267 hours, nine hours a day, and July 313 hours, ten hours a day. Assuming the days then are 15 hours or so long something in the 60s% seems feasible.
Exactly. Cheerleading (or its opposite) is trumped by data (ref. "KQ" and his "sunless days"). The numbers for the Aero are a bit higher, as I said -
28 40 50 52 56 56 65 65 62 43 28 23, averaging about 4-5% more on a yearly basis. Those who don't accept the numbers shoould take the matter up with the US weather bureau, or whatever the relevant body is.
From what I've gathered, England often has occasional sun mixed its cloudy days, while Seattle has long stretches of cloudy wet weather and then some sunny days. So Seattle might feel worse than London.
I would notice for sure. A comparative absence of runs of sunny days would not be good. But ultimately, only the totals matter to me.
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