nowcasting

Aarthi Ramamurthy / Flickr

Forecasters aren’t perfect, but we can be pretty sure of the rain falling this morning.

The cooler temps and heavier rain are a few weeks early, forecaster Cliff Mass told KPLU’s Keith Seinfeld, but the front dropping this rain will move through by mid-day today leaving Saturday mostly dry with rain returning that evening through Sunday morning.

But this could all be off by a few hours either way, because the official forecasters only publish every six hours. And those forecasts are used by nearly all the different weather Websites and news organizations.