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336 
Fpcn11 cwvr 100230
forecasts for coastal British Columbia issued by the Pacific weather
centre of Environment Canada at 7 PM PST Saturday 9 December 1995 for
tonight Sunday and Monday.
The next scheduled forecast will be issued at 5 AM Sunday.

Synopsis for coastal BC.
  Cold dry arctic air across the coast of British Columbia is being
overrun by mild and moist Pacific air moving in aloft from the
southwest.  The Pacific air is coming in waves.  The first wave
brought very warm air at mountaintop levels across the south coast.
Freezing rain has developed and treacherous driving conditions are
being reported all across the lower mainland.  Snowfall warnings
remain in effect for areas further inland where strong outflow
conditions persist.  The next wave will bring more warm air and more
moisture from the Pacific tonight.
  Further north very strong outflow winds will continue on the north
and central coasts.  Pacific moisture will also result in snow for
those regions tonight.  On Sunday another front will bring in more
rain and mild air to the south coast.

Freezing level..near the surface rising to near 2500 metres
overnight.

Greater Vancouver.
Freezing rain warning in effect.
Tonight..periods of freezing rain changing to rain overnight.
 Becoming windy. Temperature rising to 2 overnight.
Sunday..cloudy with a few showers. Windy. High 6.
Monday..rain. Windy. Low 4. High 10.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Greater Victoria.
Tonight..periods of rain. Windy. Temperature rising to 4 overnight.
Sunday..cloudy with few showers. Windy. High 7.
Monday..rain. Windy. Low 4. High 10.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Lower Fraser Valley.
Arctic outflow warning in effect.
Snowfall warning in effect.
Freezing rain warning in effect.
Tonight..periods of snow and freezing rain changing to rain
 overnight. Snowfall accumulations of up to 20 cm in eastern
 sections. Windy. Temperature rising to near zero overnight.
Sunday..cloudy with a few showers. Locally windy. High 1 to 6.
Monday..rain. Windy. Low near 4. High near 8.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Whistler.
Snowfall warning in effect.
Tonight..periods of snow. Risk of freezing rain. Snow accumulations
 of up to 20 cm. Locally windy. Temperature rising to minus 4
 overnight.
Sunday..periods of snow changing to rain in the morning. Risk of
 freezing rain. High 3.
Monday..rain. Windy. Low near 1. High near 4.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Howe Sound.
Arctic outflow warning in effect.
Snowfall warning in effect.
Freezing rain warning in effect.
Tonight..periods of snow or freezing rain changing to rain overnight.
 Snowfall accumulations of 10 to 15 cm. Windy. Temperature rising to
 2 overnight.
Sunday..cloudy with a few showers. High 3 to 5.
Monday..rain. Windy. Low near 1. High near 8.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Sunshine Coast.
Freezing rain warning in effect.
Tonight..periods of snow or freezing rain changing to rain overnight.
 Locally windy. Temperature rising to 3 overnight.
Sunday..cloudy with showers. High 6.
Monday..rain. Windy. Low near 5. High near 8.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

East Vancouver Island.
Freezing rain warning in effect.
Tonight..periods of rain or freezing rain changing to rain early this
 evening. Locally windy. Temperature rising to 3 overnight.
Sunday..cloudy with showers. High 7.
Monday..rain. Windy. Low near 2. High near 8.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

West Vancouver Island.
Tonight..periods of rain. Windy. Temperature steady near 6.
Sunday..cloudy with a few showers. Windy. High 9.
Monday..rain. Windy. Low near 4. High near 9.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

North Vancouver Island.
Wind warning in effect.
Tonight..periods of rain. Southeasterly wind 50 km/h gusting to
 90 km/h. Temperature rising to 5 overnight.
Sunday..cloudy with a few showers. Windy. High 8.
Monday..rain. Windy. Low near 4. High near 9.
Probability of precipitation in percent 100 tonight. 80 Sunday and
 100 Monday.

Central coast.
Arctic outflow warning in effect.
Tonight..periods of snow with rain on the coast. Risk of freezing rain.
 Snowfall accumulations near 10 centimetres inland. Outflow wind 50
 to 80 km/h. Low minus 3 coast to minus 14 inland.
Sunday..snow or rain easing to a few flurries or showers. Outlfow winds
 40 to 70 km/h
 high plus 3 coast to minus 6 inland.
Monday..periods of snow or rain. Outflow winds continuing. Low near minus 3.
 High near 4.
Probability of precipitation in percent 90 tonight. 90 Sunday and
 90 Monday.

North coast.
Arctic outflow warning in effect.
Tonight..cloudy with periods of snow developing overnight. Outflow
 wind 60 to 120 km/h. Low minus 5 coast to minus 22 inland.
Sunday..snow easing to a few flurries. Accumulations inland up to 5
 centimetres. Outflow wind 50 to 80 km/h. High plus 1 coast to
 minus 8 inland.
Monday..periods of snow or rain. Windy. Low minus 3 to minus 16.
 High 4 except minus 11 inland.
Probability of precipitation in percent 90 tonight. 90 Sunday and
 100 Monday.

Queen Charlottes.
Tonight..periods of rain or snow developing this evening.
 Wind easterly 40 to 60 km/h. Low 2.
Sunday..periods of rain easing to a few showers in the morning.
 Windy. High 7.
Monday..periods of snow or rain. Windy. Low near 0.  High near 4.
Probability of precipitation in percent 100 tonight. 90 Sunday and
 100 Monday.

End/dj


351 
fpcn50 cwvr 091350
mountain forecast guidance for coastal British Columbia issued by the
Pacific weather centre of Environment Canada in Vancouver at 4 AM PST
Saturday 9 December 1995 valid until midnight Sunday.
The next scheduled guidance will be issued at 2 PM today.

Synopsis.
  Cold arctic air continues to cover the province with the arctic
front through central Oregon.  A strong surface ridge of high
pressure extends from the central yukon southward across b.c.
It is maintaining a strong outflow through the mainland inlets.  The
ridge will shift into alberta today but the strong outflow winds will
continue.  Meanwhile an upper ridge on a northwest to southeast line
through 50n 131w will drift eastward to lie along the mainland coast
by late this afternoon and over the interior in 36 hour.  A southwest
flow a moist air to the west of the ridge will spread clouds and
precipitation into the south coast today and north coast overnight.
The combination of cold air entrenched at the surface and a flood of
warm moist air aloft poses a very strong threat of freezing rain to
the coast mountains this afternoon and overnight as well as snow.
As temperatures continue to rise over the south coast the warm air
will erode away the cold air and snow will change to rain. The
models indicate a possible 20 to 30 cm before it changes to rain
Sunday morning.
  Over the central and north coast mountains the cold air is more
well entrenched and warm advection aloft is not as great a factor.
Periods of snow are expected to begin tonight and continue Sunday.
Snowfall accumulations of 10 to 15 cm are expected up to Sunday
afternoon.

Freezing level..surface.  Level rising to 2500 metres over the south
coast mountains and to near 1000 metres by Sunday morning.

Extended outlook.  Mild and wet conditions will continue as a
southwest flow aloft brings a series of systems across with ample
moisture.

South coast mountains.
Warnings..snowfall warning and freezing rain warning.
Becoming light this afternoon.  Light locally moderate tonight and
Sunday.  Mountaintop winds..southerly 20 km/h.

Central coast mountains.
Warnings.. None.
Nil today. Becoming light tonight. Light locally moderate Sunday.
Mountaintop winds..light and variable.

North coast mountains.
Warnings.. None.
Nil today. Bcoming light tonight. Light locally moderate Sunday.
Mountaintop winds..light and variable.

Confidence..fair. Timing of the precip looks good.  The big
problem is the phase of precip ie.  Whether snow, rain, freezing
rain.  It will depend on how fast the warm air can errode away the
colder arctic air.

This mountain weather forecast was produced for British Columbia
ministry of transportation and highways, snow avalanche programs and
applies specifically to those areas in the forecast.  If further
information or other products are required for local operations,
please call 664-9033.

End/rn