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 Boise, 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.

Area Forecast Discussion · National Weather Service Boise (BOI) · issued Friday, November 13 at 4:58 AM MST.

Messages

Continued warm and dry conditions Friday.

Windy conditions on Friday ahead of a cold front.

Valley rain and mountain snow along a cold front Friday night into Saturday morning.

Cooler and unsettled pattern next week with snow levels lowering to valley floors by the end of the week.

Short Term

Issued 320 AM MST FRI NOV 13 2026 Strong southwest flow will continue considerably warmer than normal temperatures today, before a strong upper-level Pacific trough moves inland later today, driving a cold front eastward across the area. Windy conditions, with gusts 20-40 mph, will be expected this afternoon ahead of and along the frontal passage, with exposed areas in southeast OR and far southwest ID near NV border seeing gusts 35- 50 mph. The cold front will bring widespread precipitation throughout the area, with valleys seeing rain and higher terrain areas seeing snow showers tonight through Saturday morning. Snow levels will mostly linger in the 6000-8000 ft above sea level range today, before gradually dropping into the 5000-7000 ft above sea level range by early Saturday behind the frontal passage. As such, snow accumulations will continue to be limited to high mountain peaks. Precipitation will gradually taper off from west to east Saturday morning as the front pushes out of our area. Winds are expected to lower down to 5 to 15 mph for most areas by Saturday morning. Cooler temperatures will be expected Saturday behind the frontal passage.

A brief period of mostly dry conditions and temperatures 5 to 10 degrees above normal will be in store on Sunday, as our area stays under a dry but strong southwesterly flow ahead of another incoming Pacific trough. The dry break will be short lived, as precipitation chances return across eastern OR Sunday afternoon and evening, before spreading eastward into southwest ID late Sunday night. With snow levels mostly hanging in the 6000-7000 ft above sea level range Sunday, light mountain snow showers and valley rain will be expected again with this second precipitation round.

This is the plain-text edition, decoded without AI so it loads anywhere. Read the whole Boise discussion at /o/BOI/, 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