You flip on the radio just in time for the weather forecast (like you even have to; the way today is going, there's no way it could be anything but sun).
"...thorities believe that the strange colors of the rain may be caused by chemical emissions, and are cautioning most citizens to remain indoors. However, those in areas with a high likelyhood of flooding, such as coastal regions, areas near rivers, or valleys," one of which fits your situation rather strongly, "are being advised to wear as much rain-proof clothing as they can, to avoid leaving any skin exposed if possible, and to relocate to the shelter at KRRCHRRZZZZZ"
With that, your radio has died and left you with absolutely no idea where you're supposed to go. All you know for sure is that you've got to get out of here.