National Weather Service

Returns every NWS alert currently in force nationwide as a GeoJSON FeatureCollection - warnings, watches, advisories and statements - each with event type, severity, urgency, certainty, affected areas, effective and expiry times and the full headline and instruction text.

Returns alerts from the NWS archive rather than only those in force, supporting a time window plus the same area, zone, event and severity filters as the active feed.

Returns the alerts currently in force for one state, territory or marine area, in the same shape as the nationwide active-alerts feed. An empty features array simply means that area has nothing in force.

Returns a summary of how many alerts are currently active in total and broken down by land area, marine region and individual zone.

Returns the complete list of NWS alert event names, the controlled vocabulary used by the 'event' filter on the alerts capabilities.

Returns the full set of raw forecast variables the NWS office published for one grid cell - temperature, dewpoint, wind, sky cover, probability of precipitation, snowfall, hazards and dozens more - each as a time-series of ISO-8601 interval/value pairs.

Returns the NWS textual forecast for one 2.5 km grid cell as roughly 14 day/night periods, each with a name, temperature, wind, a short forecast phrase and a detailed narrative.

Returns the same NWS forecast for a grid cell broken into one-hour periods for about seven days, each with temperature, dewpoint, humidity, wind, probability of precipitation and a short forecast phrase.

Returns the observation stations the NWS associates with a forecast grid cell, nearest first, each with its id, name, elevation and coordinates.

Returns a NWS Weather Forecast Office record: its name, postal address, phone, email, parent region, the counties, forecast zones and fire zones it covers, and links to its products.

Returns the NWS metadata for a coordinate: the forecast office, the forecast grid X/Y, the forecast and county zones, the time zone, the radar station, and ready-made URLs for that point's forecast, hourly forecast and nearby observation stations.

Returns the recent issuances of one text product type from one issuing office, each with its product id, WMO collective id, issuance time and product name.

Returns every NWS text product type code with its human name - AFD for Area Forecast Discussion, HWO for Hazardous Weather Outlook, and several hundred more.

Returns one radar station's full record: location, elevation, operational mode, generating and reporting timestamps, latency figures and current performance telemetry.

Returns all NWS radar stations as a GeoJSON FeatureCollection with id, name, type, coordinates, elevation, time zone and current operational status.

Returns one observation station's record: name, elevation, time zone, coordinates, the forecast office that owns it and links to its observation history.

Returns the single most recent observation from a station: temperature, dewpoint, wind, barometric pressure, visibility, humidity, heat index, wind chill, cloud layers and the decoded textual description, each with its unit of measure and quality-control flag.

Returns a time-ordered FeatureCollection of past observations from one station, each with the same decoded fields as the latest observation.

Returns NWS observation stations as a GeoJSON FeatureCollection with id, name, elevation, time zone and coordinates for each, filterable by state or station id.

Returns the NWS zone forecast product for one forecast zone as a list of day/night periods with narrative text and the issue and expiry times.

Returns NWS zones as a GeoJSON FeatureCollection with each zone's id, type, name, state, owning office and boundary geometry.