NWS / Forecast grid and office for a U.S. location

Step one for a U.S. forecast: for a latitude and longitude, the NWS forecast office (gridId), grid x and y, city, state, time zone, radar station and the links to its forecasts. Pass gridId, gridX and gridY to nws-forecast or nws-forecast-hourly. Up to 4 decimals (NWS refuses more). A point outside U.S. coverage (ocean, other countries) is a $0 miss (HTTP 404). Free. Source: NOAA National Weather Service (weather.gov). U.S. locations only.