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 Jacksonville, 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.
For the latest NE FL and SE GA Daily Key Messages please visit: https:/www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf
Daily risk of isolated strong to severe thunderstorms during the. Hazards: Wind Gusts 40-60 mph, Localized downpours. Concern Area: North of I-10 and across inland Southeast Georgia
Scattered to numerous thunderstorms south of I-10 this afternoon
Isolated strong to severe thunderstorm this evening for SE GA.
Drier airmass with precipitable water around 1.5 inches continues to push southward into SE GA and close to the FL/GA border late this morning while deeper moisture will be pooled south of I-10 this afternoon. Scattered to numerous showers and thunderstorms will develop within and along the edge of the moisture axis through the afternoon. Some warming air aloft will keep instability in check this afternoon across NE FL but a few stronger storms, capable of strong gusts, may develop along the pinned Atlantic sea breeze in St Johns and Flagler counties this afternoon. Some training may occur but generally southwesterly storm motion of around 10-15 mph should limit the potential for substantial flooding.
Though the dry air will limit much convection throughout the afternoon north of I-10, model ensemble guidance indicates leftover moisture from an ongoing MCS over the lower Mississippi river valley may be enveloped by the westerly flow aloft and transported into SE GA early this evening. This will give a late day window for isolated convection to develop despite the lower level dryness. The interplay between the increase instability and dry air may support strong to severe microburst activity (winds 40-60 mph) with isolated convection in the SE GA vicinity this evening. The Storm Prediction Center has kept a "Marginal Risk" of severe storms north of I-10 given this potential wind threat this evening. Activity will wane by midnight with dry conditions through the early morning hours Monday.
Temperatures will soar into the mid and upper 90s across SE GA this afternoon but drier air will keep heat index in the 100-104F range. Temperatures will be a few degrees lower in NE FL, but low level moisture in the air will make it feel like 103-107F this afternoon. Low temperatures tonight still expected in the lower/middle 70s inland, and upper 70s along the Atlantic Coast.
This is the plain-text edition, decoded without AI so it loads anywhere. Read the whole Jacksonville discussion at /o/JAX/, see what changed since the last one, or open The National Desk for where the weather is today.