Synopsis
A low pressure system will descend from British Columbia tonight into Sunday, bringing precipitation to Western Washington. Conditions look to remain cooler and unsettled next week as additional systems move through the area.
Plaincast — the National Weather Service forecast, decoded into plain English
Plaincast
What the forecast actually says — NWS Area Forecast Discussions, decoded into plain English.
Plaincast decodes the National Weather Service's Area Forecast Discussion — the real forecast, written 3 to 4 times a day by the meteorologist on shift — into plain English. The discussion is where a forecaster explains their reasoning: which models disagree, what they are watching, and how confident they are. Below is the current edition for Seattle, with its shorthand expanded. The full experience — an AI plain-English summary beside the annotated original — loads with JavaScript, and every one of the 68 forecast offices has its own edition.
Short Term
High clouds starting to stream overhead across Western Washington early this morning. Temperatures continue to drop as well, with the latest observations showing temperatures in the low 30s to low 40s. A frontal system associated associated with a low pressure system just off the coast of British Columbia will move south into Western Washington this evening. Light precipitation is expected with this system, with rain reaching the coastline this evening and then filling into the interior by Sunday morning. The bulk of the precipitation is expected along the coast and the Olympics. The parent upper level low is expected to continue its southward track Sunday into Monday. The majority of models favor the center of the low pressure system moving into Oregon, which should render drier conditions for the region. However, shall center of the low track more towards the Oregon/Washington border, it may keep light showers in the forecast for Monday.
High temperatures in the mid to upper 50s. Low temperatures in the in the low 30s to low 40s increasing to the upper 30s to mid 40s by Monday.
This is the plain-text edition, decoded without AI so it loads anywhere. Read the whole Seattle discussion at /o/SEW/, see what changed since the last one, or open The National Desk for where the weather is today.
Data from the National Weather Service. Translated by Claude. About · For developers & agents · Subscribe: RSS feed for this office · Source on GitHub