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Forecast on WH1080
Posted: Sun 16 May 2010 5:21 pm
by p1_p1_p1
hello, i have WH1080 and my forecast is allways settled fine !
but on WH1080 LCD i can see cloudy ... etc.,
please help
im running on cumulus 1.89
Re: Forecast on WH1080
Posted: Sun 16 May 2010 5:35 pm
by steve
Does it also say "Exceptional weather"? What have you set for the pressure extremes, including the units? What units are you using for pressure in Cumulus?
Re: Forecast on WH1080
Posted: Sun 16 May 2010 5:42 pm
by p1_p1_p1
no, after program start it says forecast:Not available for a while,
after maybe a minute Settled fine ...
I'm using
wind - km/h
pressure - hPa
temp - °C
rainfall - mm
cumulus forecast enabled,
pressure extremes:
low: 950,00
high: 1050,00
and selected is mb
Re: Forecast on WH1080
Posted: Sun 16 May 2010 5:45 pm
by steve
Cumulus uses the same algorithm as this:
http://www.dickie.webfusion.co.uk/zambr ... ecast.html
You can enter your conditions there and compare it with what Cumulus says. Are you uploading to a web site? If so, a link would be useful so I can see your data.
Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:07 pm
by p1_p1_p1
site:
http://redeye.no-ip.org/~meteo/
Beteljuices Algorhithm says 12 Hour Forecast: Settled fine,
but it's raining cats and dogs

Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:22 pm
by p1_p1_p1
what means radio button in pressure extremes?
mb
in ?
and where are hPa?

Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:25 pm
by steve
mb = millibars
in = inches of mercury
hPa = hectopascal = same value as millibars
Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:28 pm
by p1_p1_p1
when i change to in,
i can see forecast:Exceptional Weather, Stormy, much precipitation
Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:31 pm
by steve
If you change the units to inches, you also have to change the figures to inches, obviously.
Re: Forecast on WH1080
Posted: Sun 16 May 2010 6:49 pm
by p1_p1_p1
I'm trying to set those:
min: 980,0
max 1045,0
and something happened
(I'm trying to use values from station records, min- ~4 and max + ~4)
but I'm absolutely not sure what I'm doing

Re: Forecast on WH1080
Posted: Sun 16 May 2010 7:14 pm
by steve
You'll probably need to experiment for a while, to see what values give best results for you. What you're doing sounds reasonable. Of course, you may find that you can't get satisfactory results. The UK Met Office spent 33 million UK pounds on their latest computer, and they still get it wrong sometimes.