Cumulus Support

Perfect explanation as ever Steve - many thanks

If I've understood, essentially manually setting the relative pressure on the Station's console provides the offset to whatever the transmitter is measuring as absolute pressure - very logical!

Also makes sense that the absolute pressure change would drive the forecast symbols - lucky me that that is the case, as I was expecting to have to reset the weather symbol as well this morning

Thanks again

In case of interest/help in identifying the current pressure where you are, have found this 'in test' Met office site that lets you key in your post code, and then gives a number of nearby observation sites to compare against

http://www.metoffice.gov.uk/public/pws/ ... athertext/

I found the hourly observation updates helpful to compare against my 'best assessment' drawn from other Cumulus users and the helpful chart posted by 'Supermop' - I was starting to feel like the man with three devices each giving a different answer, who then gets a fourth which gives yet another number - no idea which one to beleive!

Perhaps this post will be helpful:

https://cumulus.hosiene.co.uk/viewtopic.php?f=11&t=4007

The fine offset weather stations can display ABS or REL pressures
so I set mine to show REL and adjust it so that it agrees the nearby stations and the BBC forecast
I cant see that Altitude matters so long as your reading is the same as the stations around you

Try the WunderMap
http://www.wunderground.com/wundermap/? ... 43&zoom=13

MY Altitude is 73 Meters
At This Moment
ABS = 1004.7 station
REL = 1008.6 hpa station - cumulus 1008.6 hpa - BBC 1008 hpa - nearby Davis station 1007.7 hpa - another Davis weather station 12 miles away 1009hpa
Met Office bristol 1008 hps