Notice! Program is in the devlopment phase and only uses historic data, please be mindful when using. Not reccommended for actual application.
Enter a location to set the Last Known Point, adjust subject parameters, and generate ISRID-based probability rings. Export directly to CalTopo.
Last known point (LKP) location
Start typing an address or place name — suggestions will appear. You can also enter lat/long or click the map.
Searching...
Location not found.
Subject parameters
Map — click to adjust LKP or use the search above
You can also click directly on the map to move the LKP
LKP: Youngsville, NC (36.0218, -78.4730)
Ring distances — ISRID adjusted
Export to CalTopo
How to import into CalTopo: Download KML → open CalTopo → click Add → Import File → upload the file. Your LKP and all four probability rings will appear instantly.
Expected subject behaviors
Data: Koester, R.J. (2008). Lost Person Behavior. dbS Productions. ISRID — International Search & Rescue Incident Database (150,000+ incidents).