Weather API Developer's Guide

NWSAlertItemsType

The structure NWSAlertItemsType represents the information about NWS weather warnings and weather watches.

Table 1. NWSAlertItemsType elements
Element Attribute Data Type Description
type   Integer, see also Supported Warning or Watch Types Type of alert.
description   String, see also Supported Warning or Watch Types Description of the alert.
severity   Integer The severity of alerts from 1-100 with 1 being the most severe.
message   String The warning or watch text is a long string of words describing the warning or watch in detail.
zone   AlertLocationType List of zones included with the alert. US only [1] .
county   AlertLocationType List of counties included with the alert. US only [1] .
location   AlertLocationType List of locations included with the alert. Canada only [1] .
  validFromTimeLocal Date Date and time at the location the alert was issued by National Weather Service. The format is either YYYY-MM-DDThh:mm:ss + the timezone offset, unless the forecast is for a location in the UTC zone, in which the date and time is terminated by a Z.
  validUntilTimeLocal Date Alert expiration date and time at the location. The format is either YYYY-MM-DDThh:mm:ss + the timezone offset, unless the forecast is for a location in the UTC zone, in which the date and time is terminated by a Z.
  latitude Double Latitude of location polygon centroid in degrees in WGS 84 format.
  longitude Double Longitude of location polygon centroid in degrees in WGS 84 format.
  name String Location name.
  country String Country name.
  state String US-state name.
[1] One alert may impact multiple counties or zones across multiple states. Typically, a watch will impact significantly more locations than a warning.

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