Plaincast

What the forecast actually says

Plaincast — the National Weather Service forecast, decoded into plain English

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 New Orleans, 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 New Orleans (LIX) · issued Sunday, August 23 at 12:46 PM CDT.

Messages

Dangerous heat continues with afternoon heat indices in the 105-113 well into the new week. Warm overnight temperatures will offer limited relief. Those with outdoor plans should take precautions to avoid heat-related illness. Stay hydrated, wear light-weight and loose fitting clothes, and take breaks in the shade or air conditioning.

Scattered showers and thunderstorms are forecast during the mid to late afternoon hours today and Monday. A few storms could become strong to severe, producing gusty winds, frequent lightning and brief periods of heavy rain. When thunder roars, go indoors.

Short Term

(Now through Wednesday night) Issued at 1202 PM CDT Sun Aug 23 2026

Tonight through Wednesday, upper level ridging will remain in place over the area to the west, and we will enter the "ring of fire" pattern. Southerly surface winds will continue to help advect warm air and moisture into the area, increasing the humidity across the region. Daily isolated to scattered showers and storms will be expected for the next few days, but especially tomorrow as a lingering weakness influences the area. These storms where they occur will have the potential for frequent lightning and gusty subsevere winds (40- 50mph). These storms are not expected to be severe, based on recent model trends.

The heat continues as ridging builds back over the area. Highs in the upper 90s to low 100s combined with heat index values in the 105-112 degrees range will be quite warm and uncomfortable. Given the uncertainties with cloud cover for Monday, we held off on issuing a heat advisory for now. It will be looked at again on the next forecast cycle. Tuesday and Wednesday will be hot and advisories may be needed. Be sure to stay hydrated and take frequent breaks if you will be spending time outdoors. MSW

This is the plain-text edition, decoded without AI so it loads anywhere. Read the whole New Orleans discussion at /o/LIX/, see what changed since the last one, or open The National Desk for where the weather is today.