I have gotten a number of inquiries about the weather on Mother's Day, particularly since the general forecasts have been on the wet side.
I believe I can offer some good news for those of you with a little patience, tomorrow has real potential for a nice walk or barbecue (even if your mother is not around!) in many locations.
A front is approaching us now slowly, something evident on the latest image from Langley Hill coastal radar (see below).
Some showers have already hit the north coast of Washington and will slowly move down the coast later this afternoon.
The rain should begin in the interior later this evening/early Sunday and the front will be moving through before lunchtime Sunday. Here is the 3-h precipitation ending at 2 PM Sunday from the UW WRF model; you can see the rain has cleared most of the lowlands at this time.
Mother's Day is too important to leave to a single model...what do the local ensemble forecasts (which make use of many forecasts) say about the probability of precipitation for the three hours ending 5 PM? Some low probabilities (less than 30%) over the lowlands, with very low chances in the north Sound area. The lower eastern slopes of the Cascades don't look so bad either.
http://radar.weather.gov/radar.php?rid=ATX&product=N0V&overlay=11101111&loop=yes ) to make doubly sure.
Nothing is worse than a soggy mother.