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whereto get local air pressure reading

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  • 15-12-2014 9:30pm
    #1
    Yorker
    Closed Accounts Posts: 164 ✭✭


    Can someone please give me a site where you can get local air pressure? I am setting up this. It says to get a local reading

    Is hectopascals the same as millibars


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    #2
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,752 Mod ✭✭✭✭DOCARCH


    Here: http://www.met.ie/latest/reports.asp
    Yorker wrote: »
    Is hectopascals the same as millibars

    Yes.


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    #3
    Yorker
    Closed Accounts Posts: 164 ✭✭Yorker


    Thanks
    DOCARCH wrote: »
    Here: http://www.met.ie/latest/reports.asp



    Yes.
    Thanks . The county is there but not the town. i found the town in the meantime on another site.

    This unit i have says the pressure needs to be entered the first time but i see it is the same as the local reading.How would this be?.
    It synchronises time with a radio transmitter MSF but that does not include pressure does it?


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    #4
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,752 Mod ✭✭✭✭DOCARCH


    Yorker wrote: »
    This unit i have says the pressure needs to be entered the first time but i see it is the same as the local reading.How would this be?.

    Possibly just pure luck!

    Might be best to compare with your nearest Met E station as you never know, your local source may not have adjusted/set their station accurately!!! :)

    What town you in? Possibly then somebody could direct you to an accurate source?


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    #5
    kkontour
    Registered Users Posts: 351 ✭✭kkontour


    I try to calibrate my weather station when there is a HP over the country. I am about half way between finner and knock airport, so when they are about the same I choose that pressure


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    #6
    lovelyhurler
    Registered Users Posts: 305 ✭✭lovelyhurler


    kkontour wrote: »
    I try to calibrate my weather station when there is a HP over the country. I am about half way between finner and knock airport, so when they are about the same I choose that pressure


    You'd probably be nearer Markree Castle then for a pressure reading (considering Finner is at sea level and Knock Airport is about 600 feet ASL).


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    #7
    kkontour
    Registered Users Posts: 351 ✭✭kkontour


    lovelyhurler wrote: »
    You'd probably be nearer Markree Castle then for a pressure reading (considering Finner is at sea level and Knock Airport is about 600 feet ASL).
    But dont they give relative pressure readings, which take in to account the ASL factor?
    I never noticed markree listed before:confused: DoH!


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    #8
    tphase
    Registered Users Posts: 1,058 ✭✭✭tphase


    kkontour wrote: »
    But dont they give relative pressure readings, which take in to account the ASL factor?
    the ME pressure readings will be corrected to sea level


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    #9
    Yorker
    Closed Accounts Posts: 164 ✭✭Yorker


    My waether pressure is still keeping track with a local one i found


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    #10
    Jpmarn
    Registered Users Posts: 1,476 ✭✭✭Jpmarn


    All barometric pressure readings given by Met Eireann is based on sea level. Local air pressure could be slightly or substantially lower depending on how high the ground is.


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    #11
    FWVT
    Closed Accounts Posts: 922 ✭✭✭FWVT


    Pressure generally drops by 1 hPa (mBar) for every 8 m (27 ft) rise in altitude, but the exact drop varies slightly, depending on the virtual temperature of the airmass. But for our purposes it's accurate enough.

    Use this hourly chart to set your sea-level pressure.

    http://meteocentre.com/analyses/map.php?date=0&lang=en&area=uk&size=standard


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