Weather-Adjusted Survival Economics for the Urban Porch.
The Pivot Point: In Poplar Grove, when the pressure drops below 980 mb, the economics change. Angeline Thomas taught me that a lemonade stand isn't just a business—it's a shelter station. Rain doubles the shelter cost, but it triples the demand for warmth.
This is not a profit calculator. It is a survival solver.
Input your base sales volume and ambient conditions. The model calculates your break-even point under storm surge. When the Shelter Cost Multiplier crosses 2.0, the output shifts from PROFIT to SUSTAINANCE.
The traditional model assumes linear growth. The Storm Protocol introduces a non-linear penalty: Cost = Base × (1 + 1.5 × Rain_Intensity^0.8).
When pressure drops below 980 mb, the Shelter Mode engages. Profit is irrelevant; the metric becomes Survival Hours.
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