Why record high needs a record of its own
Launch library · evergreen read
A headline reporting a record high or record low draws attention precisely because it sounds dramatic, yet the claim is only as meaningful as the length of the record being compared against, and many records reported prominently are records only within a fairly short and recently established measurement period.
A record high temperature, for instance, might be a genuine record across a century of careful measurement, or simply a record for a particular weather station that has only been recording data for a handful of years, and the practical significance of the two claims is considerably different despite sounding identical.
Checking how far back the underlying record actually extends is a small habit that prevents a fair amount of unwarranted alarm or excitement, since a record that only goes back a decade is a genuinely different kind of claim than one anchored in a century or more of careful measurement.