1) Carefully (from the curb) try and unblock the street storm drain using a rake. Google Streetview may help you locate the grate, if you can’t find it in the flood, or remember where it is.

2) If that doesn’t work, try the Public Utilities hotline:

 Call 206-386-1800.  Our operators are available 24-hours a day/7-days a week.  

I called on a Thursday afternoon, a helpful live person answered speedily, and they were out here by 8 AM that Friday. Thanks, Seattle Public Utilities.