National Weather Service

• Get forecastRead the official forecast for a place, period by period (this afternoon, tonight, Thursday, and so on for about a week): temperature, chance of rain, wind, a short summary and the forecaster's full wording. Give a latitude and longitude; the nearest city, the forecast office, the zones covering the point and today's sunrise and sunset come back with it.
• Get hourly forecastRead the forecast for a place hour by hour for the next week: temperature, dew point, humidity, chance of rain, wind and a short summary for each hour. Give a latitude and longitude.
• Get zone forecastRead the forecast a local office wrote for a whole forecast zone - the county-sized areas the National Weather Service divides the country into - rather than for one point. This is the wording that goes out over NOAA Weather Radio. Use 'Look up a location' or 'Find zones' to get a zone ID.
• Get current conditionsRead the weather happening right now: temperature, what it feels like, humidity, wind, pressure, visibility and a one-line description. Name a station, or give a latitude and longitude and the nearest reporting station is used. The readings come back at the top level, so a step reads 'temperature' directly.
• Get past observationsRead what a weather station recorded over a stretch of time, newest first - one row per observation, usually hourly. Name a station, or give a latitude and longitude and the nearest reporting station is used. Defaults to the last 24 observations.
• Find weather stationsFind the weather stations that report observations, either the ones nearest a latitude and longitude (closest first) or every station across whole states. Each comes back with its ID, name, position, elevation and the zones it sits in. Search one way at a time: by coordinate or by state.
• Get active alertsRead every watch, warning and advisory in force right now - tornado warnings, winter storm watches, flood advisories, heat advisories and the rest - with the areas each covers, its severity and urgency, when it expires, and the full text and safety instructions. Narrow it one way at a time: to a latitude and longitude, to states, or to zones. Leave the scope empty for the whole country. No alerts in force is an empty list, not an error.
• Search past alertsSearch recent alerts, including ones that have already expired, newest first. Same filters as 'Get active alerts', plus a from and until time. The National Weather Service keeps roughly the last week to ten days here, so a search further back than that comes back empty rather than as an error - it means the alerts have aged out, not that nothing happened.
• Get alertRead one alert in full by its ID, including the areas it covers, its timing, and the complete text and safety instructions. IDs come from the two alert search actions.
• Look up a locationFind out who forecasts for a coordinate and what it belongs to: the nearest named city, the time zone, the local forecast office, the forecast, county and fire weather zones covering it, the nearest radar, and today's sunrise and sunset. Use it to turn a coordinate into the zone and office IDs the other actions take.
• Find zonesFind the zones the National Weather Service divides the country into - the areas forecasts and alerts are issued against. Search across states, or around a latitude and longitude, one way at a time. Defaults to public forecast zones; county and fire weather zones are the other two most alerts name.
• Get forecast officeLook up one of the 124 local forecast offices: its address, telephone number, public email address and website, plus every county, forecast zone, fire weather zone and reporting station it is responsible for.
• Find text bulletinsFind the text bulletins forecasters write, newest first - area forecast discussions, public information statements, river statements, hurricane advisories and about 340 other kinds. Filter by kind, by the office that issued it, and by time. Each row names a bulletin; 'Read a text bulletin' returns its words.
• Read a text bulletinRead the full text of one bulletin by its ID, as the forecaster wrote it. IDs come from 'Find text bulletins'.
• Look up a weather termExplain a weather term in plain English, straight out of the National Weather Service's own glossary - useful for turning the jargon in an alert or a forecast discussion into something a reader understands. An exact match wins; otherwise every term containing the words comes back, closest first.

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