For example, we've been hearing a lot about red ... But starting 4 a.m. Tuesday, the weather service has issued something called a PDS, or a "particularly dangerous situation" alert.

The Public Distribution System (PDS) in India is an example of one such safety measure. PDS distributes essential cereals such as rice and wheat as well as sugar and kerosene to people at subsidised ...

Alabama’s PDS tornado watch is the second PDS watch of the day. Parts of Mississippi and Louisiana were put under a PDS watch ...