Prevented planting occurs when fields cannot be planted during a time window due to wet conditions—this causes crop losses covered by insurance. Field visits to verify each prevented planting insurance claim seldom can be used to map the loss because fields too wet to plant are also too wet for loss adjusting. PP claims occur in wet years often in magnitudes straining crop loss-adjusting resources and preventing field visits to many claims. Statistical- and physical-based analysis employing weather, topography and satellite-based mapping of historic surface wetness rates the relative probability for PP claims throughout huge geographic regions. The method provides decision support that focuses adjuster attention to claims of low relative probability, possible fraud or unusual circumstances that require on-site documentation and establishes a safe threshold, above which claims can correctly be accepted as valid. The method provides digital documentation for the decision support process.