API

Feature: alerts

Page Contents

Returns the short name description, expiration time and a long text description of a severe alert, if one has been issued for the searched upon location.

These alerts are only active in the United States and Europe. View our United States Severe Weather map or our European Severe Weather map to see where there are active alerts at this moment.

Read the National Weather Service description of VTEC codes used in severe weather alerts in the United States, including "phenomena" and "significane", here: www.weather.gov/os/vtec/pdfs/VTEC_explanation6.pdf

European alerts are required to show the "attribution" to Meteoalarm.

Response Fields for cities within the USA

type
description
date
date_epoch
expires
expires_epoch
message
phenomena
significance

ZONES
StormBased

Response Fields for cities within Europe

type
wtype_meteoalarm
wtype_meteoalarm_name: Title
level_meteoalarm
level_meteoalarm_name
level_meteoalarm_description: Full description
description: Alert title or phrase
date: Date and time in GMT
date_epoch: NA
expires: Date and time in GMT
expires_epoch: NA
message
phenomena: NA
significance: NA
attribution: Must include the attribution when displaying an alert from Europe

Examples

Try with Apigee

Note: replace {{key}} with Your_Key

City within the USA

http://api.wunderground.com/api/Your_Key/alerts/q/IA/Des_Moines.json Show Response

{
  "response": {
  "version": "0.1",
  "termsofService": "http://www.wunderground.com/weather/api/d/terms.html",
  "features": {
  "alerts": 1
  }
  },
  "alerts": [{
  "type": "HEA",
  "description": "Heat Advisory",
  "date": "11:14 am CDT on July 3, 2012",
  "date_epoch": "1341332040",
  "expires": "7:00 AM CDT on July 07, 2012",
  "expires_epoch": "1341662400",
  "message": "\u000A...Heat advisory remains in effect until 7 am CDT Saturday...\u000A\u000A* temperature...heat indices of 100 to 105 are expected each \u000A afternoon...as Max temperatures climb into the mid to upper \u000A 90s...combined with dewpoints in the mid 60s to around 70. \u000A Heat indices will remain in the 75 to 80 degree range at \u000A night. \u000A\u000A* Impacts...the hot and humid weather will lead to an increased \u000A risk of heat related stress and illnesses. \u000A\u000APrecautionary/preparedness actions...\u000A\u000AA heat advisory means that a period of hot temperatures is\u000Aexpected. The combination of hot temperatures and high humidity\u000Awill combine to create a situation in which heat illnesses are\u000Apossible. Drink plenty of fluids...stay in an air-conditioned\u000Aroom...stay out of the sun...and check up on relatives...pets...\u000Aneighbors...and livestock.\u000A\u000ATake extra precautions if you work or spend time outside. Know\u000Athe signs and symptoms of heat exhaustion and heat stroke. Anyone\u000Aovercome by heat should be moved to a cool and shaded location.\u000AHeat stroke is an emergency...call 9 1 1.\u000A\u000A\u000A\u000AMjb\u000A\u000A\u000A",
  "phenomena": "HT",
  "significance": "Y",
  "ZONES": [
  {
  "state":"UT",
  "ZONE":"001"
  }
  ],
  "StormBased": {
  "vertices":[
  {
  "lat":"38.87",
  "lon":"-87.13"
  }
  ,
  {
  "lat":"38.89",
  "lon":"-87.13"
  }
  ,
  {
  "lat":"38.91",
  "lon":"-87.11"
  }
  ,
  {
  "lat":"38.98",
  "lon":"-86.93"
  }
  ,
  {
  "lat":"38.87",
  "lon":"-86.69"
  }
  ,
  {
  "lat":"38.75",
  "lon":"-86.3"
  }
  ,
  {
  "lat":"38.84",
  "lon":"-87.16"
  }
  ],
  "Vertex_count":7,
  "stormInfo": {
  "time_epoch": 1363464360,
  "Motion_deg": 243,
  "Motion_spd": 18,
  "position_lat":38.90,
  "position_lon":-86.96
  }
  }
  }]
}

City within Europe

http://api.wunderground.com/api/Your_Key/alerts/q/zmw:00000.1.16172.json Show Response

{
	"response": {
		"version": "0.1"
		,"termsofService": "http://www.wunderground.com/weather/api/d/terms.html"
		,"features": {
		"alerts": 1
		}
	}
		,
	"alerts": [
		{
		"type": "HEA",
		"wtype_meteoalarm": "5",
		"wtype_meteoalarm_name": "Extreme high temperature",
		"level_meteoalarm": "4",
		"level_meteoalarm_name": "Red",
		"level_meteoalarm_description": "The weather is very dangerous. Exceptionally intense meteorological phenomena have been forecast. Major damage and accidents are likely, in many cases with threat to life and limb, over a wide area. Keep frequently informed about detailed expected meteorological conditions and risks. Follow orders and any advice given by your authorities under all circumstances, be prepared for extraordinary measures.",
		"description": "Extreme high temperature",
		"date": "2012-08-21 04:00:00 GMT",
		"date_epoch": "NA",
		"expires": "2012-08-22 16:00:00 GMT",
		"expires_epoch": "NA",
		"message": "Extreme high temperature)",
		"phenomena": "NA",
		"significance": "NA",
		"attribution": "Information provided by , EUMETNET - MeteoAlarm Note: Time delays between this website and Meteoalarm.eu are possible. For the most up-to-date information about alert levels as published by the participating National Meteorological Services, please visit Meteoalarm. For terms of use of this information, and copyright information, see Meteoalarm Terms of Use."
		}
	]
}

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