https://hazards.geoplatform.gov/server/rest/services

Stopped responding. No replacement found.

Also run by DHS - Federal Emergency Management Agency (FEMA)

• https://hazards.fema.gov/arcgis/rest/services
• https://disasters.geoplatform.gov/image/rest/services
• https://gis.fema.gov/arcgis/rest/services
• https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services
• https://tiles.arcgis.com/tiles/XG15cJAlne2vxtgt/arcgis/rest/services
• https://msc.fema.gov/arcgis/rest/services