|Alpine Weather Report|
ISSUED: Thursday February 27, 2020 10:15 MST
SYNOPSIS: Patchy moisture will continue to drift eastward over an upper ridge of high pressure (a dirty ridge of high pressure) for variable cloud to partly cloudy skies and a slight chance of flurries today and tonight. High pressure should briefly build northward over southeastern BC which favours greater clearing on Friday. A weakening frontal system should begin to push inland from the coast of Washington for increasing cloud Friday evening and occasional snow later Friday night. A relatively tight pressure gradient should produce a moderate wind at times. The temperatures will continue to trend milder through Friday.
FREEZING LEVEL: Rising to between 1500 & 1700 metres this afternoon and slightly higher on Friday. A freezing layer will redevelop at surface tonight.
FERNIE ALPINE RESORT FORECAST (1615 metres):
TODAY: Cloudy with sunny breaks and morning fog patches. 30% chance of flurries. Windy at times. High near 0.
TONIGHT: Cloudy with clear periods and fog patches. 30% chance of flurries, mainly during the evening. Windy at times. Low near -4.
FRIDAY: A mix of sun & cloud, morning fog patches. Windy at times. High near 2.
FRIDAY NIGHT: Increasing cloud and wind during the evening. Occasional snow or a few flurries overnight, light accumulation, possible 3 to 6 cm. Low near -2.
SATURDAY: Cloudy with occasional snow or a few flurries and then possible afternoon snow showers, light accumulation possible. Windy, risk of strong afternoon gusts. High near -2. A few snow showers and then flurries Saturday night, light accumulation possible.
SUNDAY: Cloudy with sunny periods and a slight chance of flurries. High near -2.
MONDAY: Mainly cloudy with a 60% chance of afternoon flurries. Windy at times. High near -1.
CONFIDENCE/DISCUSSION: Fair to good confidence through Friday, fair beyond. The main chance of flurries should be confined north of Fernie today and tonight, bands of mid or high level cloud should prevail locally. A stagnant low level airmass-deepening temperature inversion also supports patchy low cloud and fog at times. Patchy moisture could still drift over the area of high pressure for greater than currently predicted cloud cover on Friday. The computer models are trending toward an earlier arrival of the Friday night system for a light accumulation of snow Friday night-early Saturday, currently favouring the midnight until near 9 or 10 AM period. Scattered flurries are suggested in its wake while airmass instability could result in heavier snow showers Saturday afternoon and early evening. A drier northwesterly flow should develop Sunday. A weak upper trough should push southeastward from the central coast on Monday, its moisture content and positioning are highly questionable.