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Surface observations / SYNOP Reports / North America

Regions: North America | Quebec | Canada | USA | Europe | France | UK
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Decoding time stamp example:

Synop Plot/170818/1400

170818/1400: year=2017; month=08 (August); day=18; 1400=14:00 UTC

Data available each 6h.
Cumulated precipitation are in mm of equivalent water. If precipitation is snow, you must simply read the numbers as in cm as opposed to mm. If precipitation is mixed, it is impossible to know which part is rain and which part is snow.