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18C peak..............

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    #62
    Su Campu
    Closed Accounts Posts: 4,279 ✭✭✭Su Campu


    Deep Easterly wrote: »
    Just noticed a rare phenomenon on my weather graphs. For the last 3 days, the air pressure readings fell as the day heated up, and rose once again as it cool down: (sorry for bad quality graph, had to be re-sized to make it fit comfortably on the post :o)



    Air pressure (black line) clearly fell, by around 1.5mb's, during the heat of the day (blue line) and rose during the night, leveling off at around 1031.0mbs. The same is happening again tonight, with pressure rising back up to 1030.1mb at the mo and will probably level off to similar vales as previous nights.

    I thought this phenomena only happened in the tropical regions of the globe :eek:, but obviously not. :)

    That's fairly common here during anticyclones. Without it you wouldn't get sea breezes. In fact, if your watching the ME 3-hour HIRLAM forecasts throughout the day you can see this pressure drop take place. Check it out tomorrow.


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    #63
    Oscar Bravo
    Registered Users Posts: 10,160 ✭✭✭✭Oscar Bravo


    Thanks SU for that. i get it now!


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    #64
    pauldry
    Registered Users Posts: 7,088 ✭✭✭pauldry


    15.8c here on Mon and 15.9c here today

    Think it will be cooler tomorrow but a run of 17.8, 17.9 15.8 and 15.9 aint bad in April


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