Disaster Mapping with Google Earth
https://gemini.google.com/share/251e1c9ed560
Created with Fast March 20, 2026 at 05:06 AMPublished July 12, 2026 at 06:19 AM
I am a federal disaster official with the small business administration disaster assistance. Can you help me create Google earth mapping systems that would coordinate with other sources like NOAA and various states and counties to show specific disaster areas?
That is a critical role to play in disaster response. Coordinating multi-agency data into a single visual "operating picture" is exactly what Google Earth Pro and Google Earth Engine were designed for.
Since you are working with federal, state, and county data, you will likely want to use Google Earth Pro (the desktop version) for immediate visualization, or Google Earth Engine if you need to perform heavy data analysis (like measuring flood extent from satellite imagery).
1. Sourcing the Data (The "Layers")
To show specific disaster areas, you’ll need to pull "Network Links" or GIS files from these organizations. Most agencies provide data in KML/KMZ (Google Earth native) or Shapefile (.shp) formats.
NOAA: Use their Active KML Feeds for real-time hurricane tracks, watches, and warnings. These "Network Links" are great because they automatically update in your Google Earth viewer as NOAA updates their data.
FEMA: Access the National Flood Hazard Layer (NFHL). FEMA provides a specific KMZ file that allows you to see flood zones directly over Google Earth imagery.
States/Counties: Most states have a "GIS Data Portal." Look for "Open Data" sites where you can download "County Boundaries," "Evacuation Zones," or "Shelter Locations."
2. How to Coordinate the Data
Once you have the files, here is how to layer them together in Google Earth Pro:
Importing Shapefiles: Go to File > Import. Select the .shp file from the state/county. Google Earth will ask if you want to apply a "Style Template"—say Yes so you can color-code the disaster zones (e.g., Red for high risk, Yellow for cautionary).
Using Network Links: Instead of a static file, go to Add > Network Link. Paste the URL from NOAA or FEMA. This ensures that if a storm path shifts, your map shifts with it without you having to re-download anything.
Organizing Folders: In the "Places" panel on the left, create folders for each agency (e.g., "NOAA Updates," "County Shelter Data"). You can toggle these on and off to declutter the view.
3. Advanced Integration (Google Earth Engine)
If your goal is to show the actual impact (e.g., "Show me every building that was underwater yesterday"), you might use Google Earth Engine.
It allows you to compare "Before" and "After" satellite imagery (like Sentinel-1 SAR data, which sees through clouds) to automatically highlight flooded areas.
This is more technical but provides the high-level analysis often needed for SBA disaster assistance reporting.
Summary Table for Disaster Layers
SourceData TypeBest FormatNOAAStorm tracks, PrecipitationKMZ (Network Link)FEMAFlood Plains, Disaster Declared AreasWMS/KMZState/CountyTax Parcels, Road ClosuresShapefile (.shp)USGSSeismic activity, TopographyKML / GeoTIFF
Would you like me to walk you through how to find a specific state's GIS portal, or perhaps help you draft a guide for your team on how to use these layers?
Import GIS data into Google Earth This video provides a visual walkthrough of the technical steps required to import various GIS formats into the Google Earth environment.