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Old March 2nd 17, 09:25 AM posted to uk.sci.weather
Graham Easterling[_3_] Graham Easterling[_3_] is offline
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Default V Low Humidities for a westerly in Cornwall. Any info?

I was alerted to the fact how low the relative humidity was last night. Below 50% for several hours at Culdrose.

A bit of a surprise to me for overnight relative humidity in a westerly in winter, even for 'cold sector' air. Obviously the air crossed the Atlantic at a fair speed. The synoptic setup at the time seems to offer few clues, so a backward trajectory would be useful, and I'd welcome any comments.

Yesterdays Max 11.2C, Min 7.8C Rain to 09:00 0.7mm.

Getting much calmer after a really rough spell http://magicseaweed.com/Sennen-Surf-Report/4/

Graham
Sunny Penzance