British Caving Association
http://www.british-caving.org.uk/
Council of Northern Caving Clubs
http://www.cncc.org.uk/
Cave Rescue Organisation
http://www.cro.org.uk/
Will it Rain Today?
http://www.raintoday.co.uk/
Mountain Weather Information Service
http://www.mwis.org.uk/areas.php
CDG Vis-Bot/Rainfall
http://www.cavedivinggroup.org.uk/cgi-bin/vis.html
Cave Maps
http://cavemaps.org/
BCA: Weather and its Effect on Caves
http://www.british-caving.org.uk/publication_information/Weather.pdf