weather property
Implementation
static final RegExp weather = RegExp(r'^((?<int>(-|\+|VC))?'
r'(?<desc>MI|PR|BC|DR|BL|SH|TS|FZ)?'
r'((?<prec>(?:DZ|RA|SN|SG|IC|PL|GR|GS|UP){1,3})|'
r'(?<obsc>BR|FG|FU|VA|DU|SA|HZ|PY)|'
r'(?<other>PO|SQ|FC|SS|DS|NSW|/))?)$');