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303 
Fpcn11 cwvr 290236
forecasts for coastal British Columbia issued by the Pacific weather
centre of Environment Canada at 7 PM PST Thursday 28 December 1995
for tonight Friday and Saturday.
The next scheduled forecast will be issued at 5 AM Friday.

Synopsis for coastal BC.
  A frontal system is moving across the coast this evening bringing
rain and strong southeasterly winds to many areas.  The strongest
winds so far have been reported along the northwest coast of
Vancouver Island where they have reached speeds of 120 km/h with
gusts to 146 km/h.  Wind warnings remain in effect for the coastal
areas from central Vancouver Island northward with the exception of
the queen Charlottes where the winds have eased behind the front.
The winds will ease over the remainder of the coast tonight as the
front moves inland.  However precipitation will continue as the
airmass remains quite moist and unstable behind the front.
Inland the precipitation will fall as snow over higher elevations and
a snowfall warning continues for the Whistler area.  The risk of some
patchy freezing rain continues for inland sections of the coast.
  A weak ridge of high pressure will build along the coast Friday
afternoon and showers will decrease.  However another low and
associated frontal system will bring more rain Saturday.
Temperatures will continue mild.

Freezing level..south..from 2300 metres over southern Vancouver
Island to near 1300 metres over the mainland coast. Rising to 1800
metres over the mainland coast this evening then dropping to 1500
metres Friday morning. North..near 1300 metres coast to surface
inland dropping to 1000 metres along the coast Friday.

Greater Vancouver.
Tonight..rain with amounts to 25 mm. Windy. Low 5.
Friday..rain easing to showers in the morning. High 9.
Saturday..periods of rain. Windy. Low 2. High 8.
Probability of precipitation in percent 100 tonight. 90 Friday and
 100 Saturday.

Greater Victoria.
Tonight..periods of rain. Windy. Low 4.
Friday..rain easing to a few showers in the morning. Locally windy.
 High 10.
Saturday..periods of rain. Windy. Low 3. High 8.
Probability of precipitation in percent 100 tonight. 90 Friday and
 100 Saturday.

Lower Fraser Valley.
Tonight..rain with local amounts to 20 mm. Windy. Low 2.
Friday..rain easing to showers in the afternoon. High 6 to 9.
Saturday..periods of rain. Locally windy. Low zero. High 6.
Probability of precipitation in percent 100 tonight. 100 Friday and
 100 Saturday.

Whistler.
Snowfall warning in effect.
Tonight..periods of snow at times heavy this evening. Low minus 3.
Friday..periods of snow ending in the afternoon. Total snowfall
 accumulations of 15 to 25 centimetres. High plus 1.
Saturday..periods of snow changing to rain at lower elevation in the
 afternoon. Low minus 3. High plus 1.
Probability of precipitation in percent 100 tonight. 80 Friday and
 100 Saturday.

Howe Sound.
Tonight..rain with amounts to 35 mm. Low 2.
Friday..rain easing to a few showers in the morning. High 6.
Saturday..periods of rain. Low 2. High 7.
Probability of precipitation in percent 100 tonight. 100 Friday and
 100 Saturday.

Sunshine Coast
east Vancouver Island.
Wind warning in effect.
Tonight..southeast wind 50 to 80 km/h over northern sections easing
 after midnight. Periods of rain. Low 3 to 6.
Friday..rain tapering to showers in the morning. High 9.
Saturday..periods of rain. Low 4. High 8.
Probability of precipitation in percent 100 tonight. 90 Friday and
 100 Saturday.

West Vancouver Island.
Wind warning in effect.
Tonight..rain with amounts to 30 mm. Wind southeast 60 to 90 km/h
 over northern sections easing overnight. Low 6.
Friday..cloudy with showers. High 11 and 9 inland.
Saturday..rain. Windy. Low 4. High 11 coast and 5 inland.
Probability of precipitation in percent 100 tonight. 80 Friday and
 100 Saturday.

North Vancouver Island.
Wind warning in effect.
Tonight..wind southeast 60 to 100 km/h with gusts to 120 km/h over
 exposed outer coast. Wind easing after midnight. Rain. Low 6.
Friday..cloudy with showers. Windy. High 9.
Saturday..rain. Windy. Low 4. High 9.
Probability of precipitation in percent 100 tonight. 80 Friday and
 100 Saturday.

Central coast - coastal sections.
Wind warning in effect.
Tonight..rain. Southeast wind 60 to 90 km/h easing overnight. Low 6.
Friday..cloudy with showers. Locally windy. High 9.
Saturday..periods of rain. Windy. Low 4. High 9.
Probability of precipitation in percent 100 tonight. 100 Friday and
 100 Saturday.

Central coast - inland sections.
Tonight..periods of rain at times mixed with snow. Low 2.
Friday..cloudy with showers. High 6.
Saturday..periods of rain at times mixed with snow. Low zero. High 3.
Probability of precipitation in percent 100 tonight. 90 Friday and
 100 Saturday.

North coast - coastal sections.
Wind warning in effect.
Tonight..wind locally northeast 60 to 80 km/h easing overnight.
 Periods of rain. Low 5.
Friday..cloudy with showers. Locally windy. High 8.
Saturday..periods of rain. Windy. Low 4. High 6.
Probability of precipitation in percent 90 tonight. 80 Friday and
 100 Saturday.

North coast - inland sections.
Tonight..periods of snow. Patchy freezing rain this evening. Gusty
 outflow wind 40 to 60 km/h easing overnight. Low minus 3.
Friday..periods of snow becoming mixed with rain in the afternoon.
 Risk of freezing rain. High plus 2.
Saturday..cloudy with a chance of flurries. Temperature lowering to
 minus 3 in the afternoon.
Probability of precipitation in percent 100 tonight. 100 Friday and
 60 Saturday.

Queen Charlottes.
Tonight..wind southerly 40 to 60 km/h easing this evening. Cloudy
 with showers. Low 7.
Friday..cloudy with showers. Windy. High 9.
Saturday..periods of rain. Windy. Low 4. High 6.
Probability of precipitation in percent 100 tonight. 80 Friday and
 100 Saturday.

End/db


646 
fpcn50 cwvr 281357
mountain forecast guidance for coastal British Columbia issued by the
Pacific weather centre of Environment Canada in Vancouver at 4 AM PST
Thursday 28 December 1995 valid until midnight Friday.
The next scheduled guidance will be issued at 2 PM today.

Synopsis.
  A series of active trowals will cross from the sw today and
Friday. The first will be the weakest..in a wnw-ese line near 50n
135w at 4 AM forecast to weaken in a split flow as it moves to a
ketchikan to Lytton line by 4 PM this afternoon. The second and
stronger one..showing signs of developing near 40n 139w will move to
a nw-se line 150 miles sw of Vancouver Island by 4 PM this afternoon
then into the okanagan by 4 AM Friday. This stronger system will
affect the southern central coast and south coast. Most significant
precipitation amounts will be over the south coast as a significant
vorticity maximum will follow the trowal to lie near tofino at 4 AM
Friday then to nw montana by 4 PM Friday. Strong southeast winds
will shift to south to southwest in the low levels after the passage
of this second trowal and vort max. This will scour out cooler air
in south coast mainland valleys by early Friday.
  Generally light convective precipitation will occur over the coast
Friday in the wake of this second feature as 500 mb heights start to
slowly rise. However late Friday another and possibly warmer system
will approach from the southwest spreading another band of
precipitation to the south.

Freezing level..
South coast..near 1600 metres rising to 2300 metres tonight and
 dropping to 1900 metres Friday morning.
North coast..1300 metres coast to surface inland rising overnight to
 1900 metres coast with near freezing layers to 1000 metres inland.

Extended outlook.
All numerical models continue to indicate a continuation of the
systems crossing the coast Saturday. Then a 500 mb ridge is expected
to build along the BC coast late Saturday and Sunday. This coupled
with light surface flow will allow low levels to cool with
subsidence inversion aloft. Any precipitation will be suppressed. A
warm front will cross the ridge from the southwest Monday bringing a
return to precipitation.

South coast mountains.
Warnings..snowfall warning.
Light today becoming moderate tonight and easing to light convective
Friday morning. Becoming light to moderate late Friday.
Mountaintop winds..southerly 20 km/h rising to 40 this morning and
to 50 to 70 late this afternoon. Winds south 50 km/h Friday.

Central coast mountains.
Warnings..none.
Light today and tonight except briefly moderate overnight. Light
convective Friday.
Mountaintop winds..southeasterly 40 to 60 km/h becoming southwest 40
overnight.

North coast mountains.
Warnings..none.
Light today and tonight. Light convective Friday.
Mountaintop winds..southeasterly 30 to 50 km/h rising to 70 km/h
this morning and shifting to south 50 overnight.

Confidence..fair. Fair to poor with timing of systems after Friday
morning. Rapidly moving systems will be almost impossible to time to
late Saturday. System to affect south tonight still has to get
organized but all computer models are consistent in how they treat
it.

This mountain weather forecast was produced for BC
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/dt