What is the usual way to report surface pressure in weather forecasts online, in smartphone apps, on TV/radio? Is it the actual local pressure or the sea-level adjusted value? Does it differ by country?

Update: For example, English Wikipedia article on Atmospheric pressure says mean sea-level pressure is normally given in weather reports. And Russian Wikipedia article says the actual pressure is used. After some research I can say, that English weather websites I've seen report sea-level pressure and Russian weather websites mostly report actual pressure, but some of them report sea-level pressure.

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    $\begingroup$ @VlachaslauTysianchuk adjusted for sea level. Otherwise how do you compare two locations one at an altitude and one at sea level ? $\endgroup$
    – user1066
    Apr 30, 2019 at 1:57
  • $\begingroup$ @gansub: Sigma coordinates? They will usually report the surface pressure, not the sea-level, that wouldn't make sense in mountainous areas. $\endgroup$ Apr 30, 2019 at 19:37
  • $\begingroup$ Better answers to this question and so Better choice for closing as duplicate: Why are weather service atmospheric pressures systematically different from those I measure in Johannesburg? @gansub is right. $\endgroup$
    – uhoh
    Apr 30, 2019 at 23:42


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