around San Francisco the description clearly write the forcasted conditions that may lead to a potential hazardous fire (these are very strong winds and low humidity around 8-18% -> drought). It's like forcasts, if the forcasted conditions meet the required conditions for the given phenomena, it's going to be a warning / threat (or risk) to people, which may occur or maybe not. (See the attached screenshot below, which is related to weather infos in Rome.)
#Weather display fire danger icons plus
Plus we can read the corresponding published weather related information on a window, which pop-up if we click on any colour signed area on the map.
The signs of different phenomenas discretely signed by little symbols as you can see on the screenshots below, it has a description for its meanings on the bottom right corner in the second choosable colour scheme (as you can see on the second screeshot below).