The new model comes in an 18k pink gold case with a white dial, an 18k white gold version comes with a grained silver-toned dial, and a steel model available exclusively at Jaeger-LeCoultre boutiques with a sunburst silver-toned dial.

FORBES: Jaeger-LeCoultre's Master Ultra Thin Perpetual Watch

In addition, since fire is a finer-grained and faster-moving phenomenon than weather, a finer grid is used for the fire model than for the atmospheric model each grid square is a few metres, rather than a few tens of metres, across.

ECONOMIST: Next, the fire forecast