California - NWS Watches and Warnings

This feature service depicts the National Weather Service (NWS) watches, warnings, and advisories within the United States. Watches and warnings are classified into 43 categories.
  • A warning is issued when a hazardous weather or hydrologic event is occurring, imminent or likely. A warning means weather conditions pose a threat to life or property. People in the path of the storm need to take protective action.
  • A watch is used when the risk of a hazardous weather or hydrologic event has increased significantly, but its occurrence, location or timing is still uncertain. It is intended to provide enough lead time so those who need to set their plans in motion can do so. A watch means that hazardous weather is possible. People should have a plan of action in case a storm threatens, and they should listen for later information and possible warnings especially when planning travel or outdoor activities.
  • An advisory is issued when a hazardous weather or hydrologic event is occurring, imminent or likely. Advisories are for less serious conditions than warnings, that cause significant inconvenience and if caution is not exercised, could lead to situations that may threaten life or property.
Source
Sample Data
Update Frequency
Area Covered
  • United States and Territories
What can you do with this layer?
  • Customize the display of each attribute by using the Change Style option for any layer.
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  • Use ArcGIS Online analysis tools, such as Enrich Data, to determine the potential impact of weather events on populations.
This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency.

Additional information on Watches and Warnings.

Data and Resources

Additional Info

Field Value
Source https://gis-calema.opendata.arcgis.com/datasets/2b400eb9a9774b40b0016c2a65722b99_6
Last Updated June 23, 2021, 20:55 (UTC)
Created June 23, 2021, 02:45 (UTC)
GUID https://gis-calema.opendata.arcgis.com/datasets/2b400eb9a9774b40b0016c2a65722b99_6
Language
dcat_issued 2019-10-28T06:40:40.000Z
dcat_modified 2021-01-09T00:50:13.000Z
dcat_publisher_name CA Governor's Office of Emergency Services
harvest_object_id 54bf13d6-8b37-49ac-9233-c5156c8d02d5
harvest_source_id 5ff3201b-0071-4d7e-b4e5-06f5add347dd
harvest_source_title Cal OES GIS Data Hub
spatial {"type": "Polygon", "coordinates": [[[-180.0, -15.045], [-180.0, 72.6], [180.0, 72.6], [180.0, -15.045], [-180.0, -15.045]]]}