Thread: Rain data
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Old June 15th 06, 01:10 AM posted to uk.sci.weather
Tudor Hughes Tudor Hughes is offline
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First recorded activity by Weather-Banter: Jan 2005
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Default Rain data


Ray wrote:
Hi,

I normally automatically reset all my data including Rainfall at Midnight on
my Davis Weather Monitor II. Is there a set time this should be done? It
seems logical to do it by the day but maybe standards specify a different
time?

Ray


The climatological convention is that the "rain-day" is 09 GMT
to 09 GMT the next day. This also applies to max and min temperatures,
though many people, myself included, use an 09-21 period for max's and
21-09 for min's, but keeping the 09-09 period for rain. I'd say
resetting everything at midnight is not the best thing to do.

Tudor Hughes, Warlingham, Surrey. (COL station 54025).