Coastal Fire Weather Forecast

Thetis Island remains at EXTREME for the next few days.

Weather Forecast
SYNOPSIS:

A cold front brings rain and gusty winds to Haida Gwaii. Precipitation gradually spreads down the coast, with light showers near Bella Bella this afternoon. SE winds over the Mid Coast will increase this afternoon with light inflows over the remainder of the Fire Centre. An upper ridge remains over the Fire Centre's southern zones, and no thunderstorms are expected, except perhaps some wet lightning in Haida Gwaii. Maximum temperatures will be about 4C above average inland in the southern zones and Mid-Island. It will be dry in the eastern sections of Fraser and Pemberton zones, with the potential for crossovers in the eastern Fraser zone. Tonight, the cold front creeps to the SE, with precipitation reaching North Island and northwest Mid Coast by dawn. Winds will be light and RH recoveries will be good.

The cold front will then continue down the coast, bringing rain to the Mid Coast and North Island, but the rest of the Fire Centre stays mainly dry and seasonably warm as the upper ridge remains over the south. Wind will be generally light and morning low clouds and spotty drizzle over much of the south on Friday could restrict flying.

OUTLOOK:

Saturday to Monday
Models show the front stalling north-south across the North Island Saturday as the supporting upper trough stretches out. Precipitation should edge into Mid Island by the afternoon. South Island and the Sunshine to Fraser zones will be dry and partly cloudy with seasonal temperatures.

For Sunday, the latest US models show the front remaining intact and coming through Mid/South Island and the southern Mainland with some rainfall. The feature is much weaker in the Canadian models, which leads to uncertainty regarding expected precipitation amounts over the South Island and southern mainland zones on Sunday.

Fire Chief J. Caldbeck
Thetis Island Vol. Fire Dept.