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Originally Posted by stoki  How long is it valid for, a SPECI is valid for up to 2 hours. In that case I assume a METAR is valid only for that 1 hour till a new one comes out, yes? |
Where did you get the 2 hours figure? A valid time on a METAR strikes me as meaningless--it's not a forecast, it's an observation. It's only guaranteed accurate for about 1 second.