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151 
Fpcn11 cwvr 180219
forecasts for coastal British Columbia issued by the Pacific weather
centre of Environment Canada at 7 PM PST Friday 17 november 1995 for
tonight Saturday and Sunday.
The next scheduled forecast will be issued at 5 AM Saturday.

Synopsis for coastal BC.
  A frontal system continues to bring wind and rain to the south
coast this evening.  Some of the higher 24 hour totals include 131.3
millimetres at nitinat lake 95.4 millimetres at port alberni 65.2
millimetres at squamish and 41.8 millimetres at west Vancouver.
Another band of heavy rain associated with the cold front is crossing
the area this evening.  Heavy rain warnings have been ended for
greater Victoria but are still in effect for outer areas of the south
with a further 15 to 30 millimetres of rain expected.
  In addition the low associated with the front continues to deepen
generating strong southeast winds over exposed coastal areas.
The winds will ease temporarily behind the front then shift to strong
and gusty west to southwesterly.  Wind warnings remain in effect for
many south coast areas.
  In the north considerable low cloud and fog with scattered showers
or flurries will continue tonight as freezing levels lower.
  On Saturday showers will linger over much of the outer coast but
some breaks will develop over the inner south coast areas later in
the day.

Freezing level..in the south 3000 lowering to 1200 metres Saturday
morning.  In the north 1500 metres lowering to 500 metres Saturday.

Greater Vancouver.
Wind warning in effect.
Heavy rain warning in effect.
Tonight..rain at times heavy this evening then tapering to a few
 showers by midnight. Additional rainfall amounts 15 to 30 mm.
 Wind southeasterly 50 to 70 km/h over exposed areas becoming
 southwesterly late evening then easing overnight. Low 6.
Saturday..cloudy with sunny periods. Chance of showers. High 12.
Sunday..sunny with cloudy periods. Low 3. High 11.
Probability of precipitation in percent 100 tonight. 40 Saturday and
 zero Sunday.

Greater Victoria.
Wind warning in effect.
Heavy rain warning ended.
Tonight..mainly cloudy. Periods of rain ending this evening.
 Wind shifting to westerly 60 to 80 km/h later this evening. Low 6.
Saturday..cloudy with sunny periods. Chance of showers. High 12.
Sunday..sunny with cloudy periods. Low 2. High 9.
Probability of precipitation in percent 90 tonight. 40 Saturday and
 zero Sunday.


Lower Fraser Valley.
Wind warning in effect.
Heavy rain warning in effect.
Tonight..rain at times heavy tapering to a few showers overnight.
 Additional rainfall amounts 15 to 25 mm. Southwest wind 50 to
 70 km/h this evening. Low 6.
Saturday..mainly cloudy with chance of showers. High 12.
Sunday..sunny with cloudy periods. Low 3. High 10.
Probability of precipitation in percent 100 tonight. 60 Saturday and
 zero Sunday.

Whistler.
Heavy rain warning in effect.
Tonight..rain at times heavy this evening tapering to a few showers
 late this evening. Locally windy this evening. Additional rainfall
 amounts 15 to 25 mm. Low 2.
Saturday..mainly cloudy with chance of showers. High 5.
Sunday..sunny with cloudy periods. Low minus 2. High 6.
Probability of precipitation in percent 100 tonight. 60 Saturday and
 zero Sunday.

Howe Sound.
Wind warning in effect.
Heavy rain warning in effect.
Tonight..rain tapering to showers. Inflow wind 65 to 95 km/h this
 evening. Additional rainfall amounts 20 to 40 mm. Low 5.
Saturday..mainly cloudy with chance of showers. High 8.
Sunday..sunny with cloudy periods. Low 3. High 10.
Probability of precipitation in percent 100 tonight. 60 Saturday and
 zero Sunday.

Sunshine Coast
east Vancouver Island.
Wind warning in effect.
Heavy rain warning in effect.
Tonight..rain at times heavy this evening tapering to a few showers
 late this evening. Wind southeast 60 to 80 km/h becoming southwest
 40 to 70 km/h. Additional rainfall amounts 15 to 25 mm. Low 5.
Saturday..cloudy with sunny periods. Chance of showers. High 12.
Sunday..sunny with cloudy periods. Low 3. High 10.
Probability of precipitation in percent 90 tonight. 40 Saturday and
 zero Sunday.

West Vancouver Island.
Wind warning in effect.
Heavy rain warning in effect.
Tonight..rain at times heavy tapering to a few showers early this
 evening. Additional rainfall amounts 20 to 40 mm. Wind southeast 65
 to 100 km/h becoming westerly this evening then easing overnight.
 Low 5.
Saturday..mainly cloudy with chance of showers. High 10.
Sunday..cloudy with sunny periods. Chance of a shower. Low 3. High 9.
Probability of precipitation in percent 100 tonight. 60 Saturday and
 40 Sunday.

North Vancouver Island.
Wind warning in effect.
Tonight..southeast wind 65 to 95 km/h over exposed coast becoming
 westerly early this evening and easing overnight. Cloudy with a few
 showers. Low 4.
Saturday..mainly cloudy. A few morning showers. High 10.
Sunday..cloudy with sunny periods. Chance of a shower. Low 3. High 9.
Probability of precipitation in percent 80 tonight. 80 Saturday and
 40 Sunday.

Central coast - coastal sections.
Tonight..cloudy with a few showers. Locally windy this evening.
 Low 4.
Saturday..mainly cloudy. A few morning showers. High 10.
Sunday..cloudy with sunny periods. Low 4. High 9.
Probability of precipitation in percent 80 tonight. 80 Saturday and
 20 Sunday.

Central coast - inland sections.
Tonight..cloudy with showers changing to flurries this evening.
 Locally windy. Low zero.
Saturday..cloudy with sunny periods. A few morning flurries. High 6.
Sunday..mainly sunny. Low minus 3. High 5.
Probability of precipitation in percent 80 tonight. 80 Saturday and
 10 Sunday.

North coast - coastal sections.
Tonight..cloudy with a few showers. Flurries at higher levels. Low 5.
Saturday..mainly cloudy. A few morning showers or flurries. High 9.
Sunday..mainly cloudy with showers. Windy. Low 3. High 9.
Probability of precipitation in percent 80 tonight. 90 Saturday and
 80 Sunday.

North coast - inland sections.
Tonight..mainly cloudy with a few showers or flurries. Low 1.
Saturday..cloudy with clear periods. A few morning showers or
 flurries. High 5.
Sunday..mainly cloudy with showers or flurries likely. Low zero.
 High 4.
Probability of precipitation in percent 80 tonight. 80 Saturday and
 70 Sunday.

Queen Charlottes.
Tonight..cloudy with clear periods. A few showers. Low 4.
Saturday..increasing cloud. Chance of showers. High 9.
Sunday..mainly cloudy with showers. Windy. Low 3. High 9.
Probability of precipitation in percent 80 tonight. 60 Saturday and
 80 Sunday.

End/db


266 
fpcn50 cwvr 172138
mountain weather forecast for coastal British Columbia issued by the
Pacific weather centre of Environment Canada in Vancouver at 2:00 PM
PST Friday 17 november 1995 valid until midnight Saturday.  The next
scheduled forecast will be issued at 6:00 AM PST Saturday.

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.
At 500 mb a strong southwest flow continues with embedded
shortwaves. The strongest will cross the south coast this evening
with another very weak short wave moving through mid day sat.
At the surface the front lies east-west across central Vancouver i
then southwest to a developing low near 45 n 131 w. The low is
tracking rapidly northeastward and by this evening will sit over the
central interior with the cold front southward through southern
Vancouver i. At present the warm sector covers most of the south
coast with baroclinic cloud extending from puget Sound all the way
to just north of stewart. The heaviest precip will be this evening
as the back side of the system moves through. Behind the front a
surface ridge will begin to develop but convective precip will
likely continue as temperatures cool aloft and ample low level
moisture remains trapped along the coast mountains. The upper short
wave will further contribute to the instability sat morning. By sat
afternoon a weak upper ridge will begin to form along 130 w giving a
drier west-northwest flow aloft over the coast.

Freezing level..in the south 3000 metres lowering to 2500 metres
this evening and 1200 metres sat morning on. Central coast..2100
metres lowering to 1500 metres this evening and 800 metres sat
morning rising to 1400 metres sat evening. North coast..1200 metres
lowering to 500 metres sat morning rising to 1000 metres sat evening.

Extended outlook.
The upper ridge will continue to develop over BC sun and mon as the
surface ridge moves inland to give an offshore flow along the coast.
At the same time heights rise considerably. By mon morning the 570
contour will lie over the south coast. The result will be dry and
mild conditions over most of the coast. In the longer term a weak
shortwave breaks through the ridge on tues.

South coast mountains.
Warnings.. Heavy rain warnings/wind warnings.
Heavy this evening decreasing to light after midnight. Light
flurries sat decreasing to nil late afternoon.
Mountaintop winds..southerly 60 to 100 km/h this evening becoming
westerly 40 to 55 km/h after midnight and westerly 20 km/h sat
afternoon.

Location        precip to 4am   precip 4am-4pm   min  max
                Saturday          Saturday
squamish        >30             1-5              -2     0
duffey lk       >30             6-15             -2     0
allison pass    15-30           1-5               0     3
Fraser canyon   15-30           1-5               4     7

central coast mountains.
Warnings.. None.
Light tonight occasional moderate this evening. Light flurries sat.
Mountaintop winds..southwest 30 to 50 km/h becoming westerly 20 to
40 km/h after midnight and light westerly sat afternoon. Strong
outflow winds at lower levels this evening.

Location        precip to 4am   precip 4am-4pm   min  max
                Saturday          Saturday
heckman pass    6-15            1-5              -3     0

north coast mountains.
Warnings.. None.
Occasional light flurries through sat.
Mountaintop winds..southwest 30 km/h becoming west 40 km/h overnight
and west 25 km/h sat afternoon.

Location        precip to 4am   precip 4am-4pm   min  max
                Saturday          Saturday
terrace tyee    1-5             1-5              -1     4
bear pass       1-5             1-5              -1     1
ningunsaw pass  1-5             1-5              -3     0
telegraph crk   0-1             0-1             -10    -5

confidence..good. The system has now developed sufficiently to allow
us to get a handle on it.  Precip amounts seem to be verifing fairly
well using aes station data. Lack of reports from moth raws site
continues to be a major problem especially for the south and central
coasts.

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