FYRIS: Every day, a relative ranking of sectors across mainland France and Corsica, set on a map, to show where to look first.

Starting point

Fire cannot be predicted. The vulnerability of the land can be measured. With limited resources, the useful question is not “where is the risk high?” but “which sectors should we look at first?”.

Design stance

A relative ranking, renewed every day: FYRIS orders sectors against one another to help allocate attention and resources. Precise vocabulary — a rank, never an official warning or a probability — and results published with their protocol.

What was built

• A daily ranking of 8,495 sectors of 8 km, across mainland France and Corsica.
• A daily map with a free account: interpolated priority level, share retained from 1% to 20%, two readings — concentrate resources or cover the territory — and sealed archives that are never rewritten.
• Public pages showing what a rank decides, on real situations reconstructed after the fact.
• An Evidence, references and limits page: every figure comes from an evaluation whose protocol was written before the result.

Requirements held

Measured

Evaluated on years the engine had never seen, and compared with the European reference fire weather index.

Transparent

The areas where FYRIS ranks less well are published next to the results.

Strict vocabulary

A relative level — never an official warning, never a probability of fire.

Support, not decision

FYRIS shows where to look; the decision stays with those who carry it.

Verifiable evidence

Good to know

• A relative ranking: not an alert, not an official warning, not a probability of fire.
• FYRIS is compared with the FWI fire weather index and does not replace it.
• It observes the state of the land, not the ignition source, and ranks less well where no fire has been recorded in the past.

Status