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474 
Fpcn11 cwvr 091852
forecasts for coastal British Columbia issued by the Pacific weather
centre of Environment Canada at 10 AM PST Thursday 9 november 1995
for today and Friday.
The next scheduled forecast will be issued at 4 PM.

Synopsis for coastal BC.
  An unsettled northwesterly flow aloft has set up along the b.c.
Coast behind the strong frontal system which passed over the south
coast yesterday.  Some breaks in the cloud cover will develop today
however scattered showers are expected to linger on the coast with
flurries over inland areas.  Friday morning the next frontal system
will spread cloud onto the coast with precipitation reaching the
coast later in the day.

Freezing level..south.. Near 700 metres rising to 1200 metres by
Friday morning.  North.. At or near the surface.

Greater Vancouver.
Today..cloudy with sunny periods. Chance of a shower. High 8.
Tonight..cloudy periods. Chance of a shower or flurry at higher
 levels. Low zero.
Friday..cloudy. Chance of a shower. Rain developing in the afternoon.
 Windy. High 7.
Probability of precipitation in percent 40 today. 40 tonight and
 100 Friday.

Greater Victoria.
Today..mix of sun and cloud. A chance of a shower. Windy near the
 water. High 9.
Tonight..a few cloudy periods. A chance of a shower. Low 2.
Friday..cloudy. Chance of a shower. Rain developing in the afternoon.
 Windy. High 7.
Probability of precipitation in percent 40 today. 60 tonight and
 100 Friday.

Lower Fraser Valley.
Today..mix of sun and cloud. Chance of showers. High 8.
Tonight..cloudy periods. Chance of showers expect flurries in eastern
 sections and over higher terrain. Low minus 1.
Friday..cloudy. Chance of a shower or flurry. Rain developing in the
 afternoon. Windy. High 8.
Probability of precipitation in percent 60 today. 60 tonight and
 90 Friday.

Whistler.
Today..mainly cloudy with flurries. High 3.
Tonight..mainly cloudy with a chance of a flurry. Low minus 5.
Friday..cloudy. Periods of snow developing in the afternoon. High 5.
Probability of precipitation in percent 80 today. 40 tonight and
 100 Friday.

Howe Sound.
Today..mix of sun and cloud. Chance of showers. High 7.
Tonight..cloudy periods. A chance of a shower or flurry. Low zero.
Friday..cloudy. Chance of a shower or flurry. Rain developing in the
 afternoon. High 5.
Probability of precipitation in percent 60 today. 40 tonight and
 100 Friday.

Sunshine Coast.
Today..sunny with cloudy periods. Chance of a shower. High 7.
Tonight..cloudy periods. A chance of a shower or flurry. Low zero.
Friday..cloudy. Chance of a shower or flurry. Rain developing in the
 afternoon. High 6.
Probability of precipitation in percent 40 today. 40 tonight and
 90 Friday.

East Vancouver Island.
Today..cloudy with sunny periods. Chance of a shower. High 7.
Tonight..cloudy periods. A chance of a shower or flurry. Low zero.
Friday..cloudy. Chance of a shower or flurry. Rain developing in the
 afternoon. High 6.
Probability of precipitation in percent 40 today. 40 tonight and
 90 Friday.

West Vancouver Island.
Today..mainly cloudy. A chance of showers. Windy in exposed areas.
 High 7.
Tonight..cloudy periods. A chance of a shower or flurry. Low 2.
Friday..cloudy. Periods of rain. Windy. High 8.
Probability of precipitation in percent 60 today. 40 tonight and
 100 Friday.

North Vancouver Island.
Today..cloudy with sunny periods. A few showers except flurries
 inland at higher levels. High 7.
Tonight..cloudy periods. A chance of a shower or flurry. Low minus 1.
Friday..cloudy. Periods of rain. Becoming windy. High 10.
Probability of precipitation in percent 80 today. 60 tonight and
 100 Friday.

Central coast.
Today..mainly cloudy. A few showers along the coast and flurries
 inland. Windy through the inlets. High 6 coast to 3 inland.
Tonight..cloudy periods. A chance of a shower or flurry. Low minus 3.
Friday..cloudy. Chance of showers or flurries. Rain developing in the
 afternoon along the coast. Windy. High 4.
Probability of precipitation in percent 80 today. 40 tonight and
 80 Friday.

North coast - coastal sections.
Today..cloudy with sunny periods. Chance of flurries. Windy through
 the inlets. High 3.
Tonight..cloudy periods. A slight chance of flurries. Low minus 5.
Friday..cloudy. Periods of snow changing to rain late in the day.
 Gusty southeast wind 40 to 60 km/h. High 5.
Probability of precipitation in percent 40 today. 30 tonight and
 100 Friday.

North coast - inland sections.
Today..mainly cloudy with flurries. Gusty outflow wind. High minus 2.
Tonight..cloudy periods. Chance of a flurry. Low minus 7.
Friday..increasing cloud. Chance of flurries. Periods of snow
 developing in the afternoon. Windy. High minus 2.
Probability of precipitation in percent 80 today. 40 tonight and
 100 Friday.

Queen Charlottes.
Today..a mix of sun and cloud. Slight chance of showers. Windy.
 High 6.
Tonight..cloudy periods. Low 1.
Friday..increasing cloud. Periods of rain developing. Becoming windy.
 High 7.
Probability of precipitation in percent 30 today. 20 tonight and
 90 Friday.

End/db


443 
fpcn50 cwvr 092139
mountain weather forecast for coastal British Columbia issued by the
Pacific weather centre of Environment Canada in Vancouver at 2:00 PM
PST Thursday 9 november 1995 valid until midnight Friday.  The next
scheduled forecast will be issued at 6:00 AM PST Friday.

Precipitation intensity is forecast as an
hourly rate of snowfall water equivalent.
  Nil        light          moderate       heavy
no pcpn   up to 2.5 mm   2.5 to 7.5 mm   more than 7.5 mm

discussion.
A fairly weak upper ridge sits out along 145 w this afternoon with a
northwest flow of unstable air along the coast.  A weak short wave
embedded in this flow is generating some heavier flurries over the
south coast this afternoon but will soon move out of the area. Sat
pics show open celled convective cloud everywhere along the coast
for continued scattered light flurry activity tonight.  Further out
a storm is developing between 140 and 150 w with a new jet stream
beginning to thrust in behind the system to accelerate it towards
the coast. The overruning cirrus cloud from this system should begin
to thicken up over the coast fri morning with precipitation
spreading onto the outer coast late morning and reaching inland
sections mid to late afternoon. By fri afternoon the frontal wave
will sit near 53 n 136 w with a warm front from the wave to sandspit
then port hardy - south southeastward.
  The arctic trough lies northwest-southeast along the coast with
the arctic front from the southern panhandle - bella coola -
southeastward.  It will push out about another 60 nm tonight then
retreat to a terrace - bella coola line by fri afternoon.  The
models indicate strong warm air advection aloft indicating a rapid
rise in freezing levels while cold air is still outflowing at the
surface.  The result is likely to be some freezing rain for inland
sections of the north and central coasts.

Freezing level..surface north coast rising to 1000 metres fri
evening. In the south near 700 metres rising to near 1100 metres fri
morning and 1800 metres inland to 2500 metres coast fri evening.

Extended outlook.
The front will move rapidly across early sat with a straight
westerly flow aloft in behind for sat then some minor upper and
surface ridging for sun.  Another strong frontal system with a well
developed warm sector moves in mon.

South coast mountains.
Warnings..snowfall warning Whistler/eastern Fraser Valley.
Local light flurries tonight and early fri. Becoming light late fri
morning and light to moderate fri evening.
Mountaintop winds..westerly 25 to 40 km/h becoming southerly 50 to
80 km/h fri afternoon.

Location        precip to 4am   precip 4am-4pm   min  max
                Friday          Friday
squamish        nil             1-5              -7    -2
duffey lk       0-1             1-5              -8    -2
allison pass    0-1             0-1              -6    -2
Fraser canyon   0-1             0-1              -2     2


central coast mountains.
Warnings.. Snowfall warning inland sections. Wind warnings coast.
Light flurries tonight and early fri. Becoming light mid morning fri
and moderate late fri afternoon thru evening.
Mountaintop winds..light northeasterly becoming southerly 50 to 80
km/h fri afternoon.

Location        precip to 4am   precip 4am-4pm   min  max
                Friday          Friday
heckman pass    1-5             6-15            -12    -4


north coast mountains.
Warnings..freezing rain and snowfall warning for north coast inland.
          Wind warning on the coast.
Light locally moderate flurries tonight. Becoming light fri mid
morning and moderate fri evening.
Mountaintop winds..light northerly becoming southeast 20 to 40 km/h
fri morning and southeast 70 to 100 km/h fri afternoon. Strong
outflow winds through the inlets.

Location        precip to 4am   precip 4am-4pm   min  max
                Friday          Friday
terrace tyee    0-1             1-5              -8     2
bear pass       0-1             1-5             -10    -3
ningunsaw pass  nil             0-1             -17    -7
telegraph crk   nil             nil             -25   -15


confidence..fair. The timing of the front is a little suspect as is
the amount of precip with the warm front. With a strong southwest
flow aloft the precip May be minimal at first as it drys out in the
subsisdence.  The other problem is that most of the precip occurs
after 4pm fri which limits the value of the area forecasts. The
models do indicate heavy precip with accumulations in the 25 to 30
cm range through sat.

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/db