Your HVA and the triggers that activate your plan

The Hazard Vulnerability Analysis (HVA) is built to the all-hazards structure surveyors expect: one row per hazard, a probability, and the columns of judgement only your facility can supply. Calchis fills the probability column from your county's federal record — thirty years of NOAA storm events and FEMA's declaration history — and prints the basis beside every figure. The judgement columns are left for you: a document that guessed your preparedness would be inventing the half that matters.

From the analysis to the triggers

An emergency plan is built on its risk assessment, so the hazards your HVA rates as likely are the ones whose warnings should activate the plan. Plan triggers lists, for every hazard rated moderate or high, the conditions Calchis watches for it — the hurricane forecast cone and the tropical watch and warning for a coastal facility, the flood watch and warning, the fire weather watch and red flag warning — and whether each is switched on for your account.

Live products never change the HVA itself. The probability column is the county's record; a watch issued this morning does not move it.

Some hazards have no live federal product to watch — drought, dam failure, epidemic. Those rows say so, rather than leaving a blank that reads like an oversight.

For how to fill the analysis in — what each column asks, which three run the other way, and how to start this year from last year’s — see Completing your Hazard Vulnerability Analysis.