Plaincast — the National Weather Service forecast, decoded into plain English
The Lede
Key Takeaway
·Forecaster's confidence
What is an Area Forecast Discussion?
Area Forecast Discussions are the real forecasts, written 3 to 4 times daily by NWS meteorologists reading the models and interpreting what they mean for your area. They offer far deeper insight than any weather app, but they're written in dense meteorological shorthand. Plaincast uses Anthropic's Claude to summarize them into plain English, side by side with the annotated original.
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 Honolulu, 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 Honolulu (HFO) · issued Sunday, August 23 at 9:12 AM HST.
Synopsis
Locally strong and gusty trade winds will prevail today as Tropical Storm Moke moves westward, several hundred miles south of the islands. Moisture along the northern periphery of Moke will bring wet conditions and a risk of flash flooding on the Big Island through Monday, while less rainfall is expected to impact windward sections from Maui to Kauai over the next couple of days. Trade winds will gradually ease Monday and Tuesday as Moke moves westward away from the area, with drier trade wind weather returning midweek.