Help & About

Forecast discussions

Each National Weather Service forecast office writes an Area Forecast Discussion: the forecasters' own account of the reasoning behind the forecast. It says what the weather models show and where they disagree, how confident the forecasters are, and what could change.

Offices issue one at least twice a day, early morning and afternoon, and update it as things change. It's written in sections, usually a synopsis, the near and long term, and the outlook for pilots, mariners and fire weather, ending with any watches, warnings and advisories in effect. Forecasters write in a shorthand of their own; the NWS glossary explains most of it.

Reading them here

  • Choose an office from the list or the map to read its latest discussion.
  • Search by city, state or office code, and sort the list A–Z or by distance, which asks for your location.
  • Above each discussion is the forecast where you are, once you've shared your location. Switch it to the forecast at the office.
  • Signed in, follow the offices you read most to keep them under Following.
  • A discussion's product header has the details of its bulletin, and a badge marks one the office has sent again with corrections.

Keyboard shortcuts

On the list of offices and their discussions.

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With your AI assistant

The offices, their discussions, forecasts and alerts are also an MCP server, so an assistant like Claude can read them for you. It needs no sign-in and changes nothing. Its address is 

https://wxd.app/mcp
  • In Claude, under Settings, then Connectors, add a custom connector with that address.
  • In Claude Code, run claude mcp add --transport http forecast-discussions https://wxd.app/mcp.
  • In another client, add a server reached over streamable HTTP at that address.

Then ask, say, what the Tucson office thinks of the weekend.

An experiment by Christopher Green. Not affiliated with the National Weather Service.

The discussions are the forecast offices' own, as published by the National Weather Service.

Set in these faces, each under the SIL Open Font License 1.1:

  • Lato by Łukasz Dziedzic, for the text
  • Bricolage Grotesque by the Bricolage Grotesque Project Authors, for headings and the wordmark
  • DM Mono by the DM Mono Project Authors, for what the offices write

Icons from Heroicons and, for the weather, Phosphor Icons, both under the MIT License.