Hello Hugh. I'm afraid that your instrument is telling porkies. Make sure
all your connections are sound, and the battery, if it uses one, is good. If
you use a radio link, check the receiver unit too. RH below 20% is quite
rare. My lowest value in the past 17 years is 13% in May 2013. The average
lowest per month ranges from 53% in December to 26% in April.

--
Bernard Burton

Wokingham Berkshire.

Weather data and satellite images at:
http://www.woksat.info/wwp.html

"Hugh Newbury" wrote in message
...
Early this morning (0450) the humidity recorded by my AWS was 3%, the
DP -29.6.

I suppose everyone's figures were similar? So what caused this surely
exceptionally low figure? Simply the Spanish or Saharan plume?

Hugh

--

Hugh Newbury

www.evershot-weather.org

Hello Hugh. I'm afraid that your instrument is telling porkies. Make sure
all your connections are sound, and the battery, if it uses one, is good. If
you use a radio link, check the receiver unit too. RH below 20% is quite
rare. My lowest value in the past 17 years is 13% in May 2013. The average
lowest per month ranges from 53% in December to 26% in April.

--
Bernard Burton

Wokingham Berkshire.

Weather data and satellite images at:
http://www.woksat.info/wwp.html