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585 
Fpcn11 cwvr 242333
forecasts for coastal British Columbia issued by the Pacific weather
centre of Environment Canada at 4 PM PST Friday 24 november 1995 for
tonight Saturday and Sunday.
The next scheduled forecast will be issued at 7 PM.

Synopsis for coastal BC.
  An upper cold low stalled in the gulf of Alaska will maintain a
very unsettled and showery pattern over the coast for the next while.
Disturbances embedded in the pattern will intensify the shower
activity from time to time.  One such disturbance will move across
the coast tonight giving locally heavy showers to many south coast
locations.  Local accumulations could reach 50 millimetres in the
howe Sound - squamish area and along the north shore mountains
tonight and heavy rain warnings have been issued for these areas.
Strong gusty southeast winds will accompany this disturbance.  A very
weak ridge of high pressure will move to the coast Sunday to bring a
few breaks and slightly less shower activity.  High temperatures will
be mild again Saturday then cool back into the single digits for
Sunday.

Freezing level..near 2000 metres in the south to 1500 metres in the
north.  Lowering to 1200 metres in the south and 1000 metres in the
north Saturday.

Greater Vancouver.
Heavy rain warning issued.
Tonight..showers at times heavy. Risk of a thundershower. Windy.
 Rainfall amounts 20 to 30 mm except locally up to 50 mm along the
 north shore mountains. Low 8.
Saturday..cloudy with showers. Windy. High 12.
Sunday..mainly cloudy with showers likely. Low 5. High 8.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 70 Sunday.

Greater Victoria.
Tonight..cloudy with showers. Heavy showers at times. Risk of a
 thundershower. Rainfall amounts 15 to 20 mm. Windy. Low 7.
Saturday..cloudy with showers. Windy. High 13.
Sunday..mainly cloudy. Chance of showers. Low 4. High 8.
Probability of precipitation in percent 100 tonight. 90 Saturday and
 60 Sunday.

Lower Fraser Valley.
Tonight..cloudy with showers. Heavy showers at times. Risk of a
 thundershower. Rainfall amounts 15 to 25 mm. Windy. Low 8.
Saturday..cloudy with showers. Windy. High 13.
Sunday..mainly cloudy with a few showers. Low 5. High 8.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 90 Sunday.

Whistler.
Tonight..cloudy with showers heavy at times. Rainfall amounts 15 to
 25 mm. Low 2.
Saturday..cloudy with showers becoming mixed with flurries in the
 evening. High 5.
Sunday..mainly cloudy with a few showers or flurries. Low 1. High 4.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 90 Sunday.

Howe Sound.
Heavy rain warning issued.
Tonight..showers heavy at times. Risk of a thundershower. Rainfall
 amounts 30 to 50 mm. Windy. Low 5.
Saturday..cloudy with showers. High 10.
Sunday..mainly cloudy with a few showers. Low 4. High 8.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 90 Sunday.

Sunshine Coast
east Vancouver Island.
Tonight..showers heavy at times. Risk of a thundershower. Rainfall
 amounts 15 to 25 mm. Wind southeast 40 to 60 km/h. Low 5.
Saturday..cloudy with showers. Windy. High 10.
Sunday..mainly cloudy. Showers likely. Low 4. High 8.
Probability of precipitation in percent 100 tonight. 90 Saturday and
 70 Sunday.

West Vancouver Island.
Tonight..cloudy with showers. Chance of a thundershower.
 Wind southeast 40 to 60 km/h. Rainfall amounts 25 to 45 mm. Low 6.
Saturday..cloudy with showers. Windy. High 10.
Sunday..cloudy with a few showers. Windy. Low 3. High 7.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 80 Sunday.

North Vancouver Island.
Tonight..cloudy with showers at times heavy. Chance of a
 thundershower. Wind southeast 40 to 60 km/h with higher gusts along
 exposed coast. Low 5.
Saturday..cloudy with showers. Windy. High 10.
Sunday..cloudy with a few showers. Windy. Low 3. High 7.
Probability of precipitation in percent 100 tonight. 100 Saturday and
 80 Sunday.

Central coast.
Tonight..cloudy with showers except mixed with flurries inland.
 Chance of a thundershower. Southeast wind 30 to 50 km/h. Low 5 coast
 to zero inland.
Saturday..cloudy with a few showers. Windy in exposed areas. High 10
 coast to 3 inland.
Sunday..cloudy with a few showers. Low minus 2 to plus 1. High plus 3
 to 7.
Probability of precipitation in percent 100 tonight. 80 Saturday and
 90 Sunday.

North coast.
Tonight..periods of rain except mixed with snow inland. Windy in
 exposed areas. Low 5 coast to zero inland.
Saturday..cloudy with a few showers except mixed with flurries
 inland. Windy in exposed areas. High 9 coast to 3 inland.
Sunday..cloudy with a few showers. Low minus 2 to plus 1. High plus 3
 to 7.
Probability of precipitation in percent 100 tonight. 90 Saturday and
 90 Sunday.

Queen Charlottes.
Tonight..cloudy with showers. Windy. Low 6.
Saturday..cloudy with showers. Windy. High 9.
Sunday..cloudy with a few showers. Low near 3. High near 8.
Probability of precipitation in percent 100 tonight. 90 Saturday and
 80 Sunday.

End/db


763 
fpcn50 cwvr 242139
mountain weather forecast for coastal British Columbia issued by the
Pacific weather centre of Environment Canada in Vancouver at 2:00 PM
PST Friday 24 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.
A deep upper low centered at 54n/141w continues to maintain a moist
unstable pattern over the coast. A series of shortwaves are rotating
out of the low and across the coast. The leading shortwave is arced
queen Charlottes-port hardy-southward. By sat morning it will move
to stewart-vicinity Kelowna. The main upper low will fill and move
to lie as an upper trough terrace-port hardy-southward by sat
evening. Heights will gradually lower through the period.  At the
surface a 984 mb low will continue to fill as it swings in to lie
as a 994 mb low over prince rupert sat afternoon then swing
northward up the panhandle. A surface trough will extend southeast
across the north coast from this low. The arctic front will remain
quasi-stationary vicinity telegraph crk southeastward. The main
effect will be continued cloud and convective precipitation over the
coast through the period with the showers/flurries becoming more
intense vicinity of the shortwaves. The imagery shows fairly
disorganized cloud with embedded convective cloud and possibly even
a few small thunderstorms along the shortwave. Precip amounts will
vary widely both in time and space with locally heavy precip quite
likely.

Freezing level..2000 metres south to 1500 metres central and north
lowering to 1200 metres south and 1000 metres north sat. Remaining
near 600 metres ningunsaw/bob quinn and surface north of the arctic
front.

Extended outlook.
The progs show some weak ridging along the coast sun but the surface
trough will probably maintain cloud and convective precip over the
mountains. On mon an upper low begins to dig offshore again to bring
the main frontal stream up over the coast for renewed warming aloft
and more precipitation. The leading frontal wave moves up mon
afternoon with another more intense system due tues.

South coast mountains.
Warnings.. None.
Moderate over southwest slopes tonight. Light elsewhere. Light
locally moderate convective sat.
Mountaintop winds..southwesterly 40 to 60 km/h.

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

central coast mountains.
Warnings.. None.
Occasional light through sat afternoon. Locally moderate convective
sat evening.
Mountaintop winds..southwesterly 30 to 50 km/h.

Location        precip to 4am   precip 4am-4pm   min  max
                Saturday          Saturday
heckman pass    1-5             1-5              -2     1


north coast mountains.
Warnings.. None.
Occasional light convective through sat.
Mountaintop winds..southerly 20 to 40 km/h

location        precip to 4am   precip 4am-4pm   min  max
                Saturday          Saturday
terrace tyee    1-5             1-5               2     5
bear pass       1-5             1-5              -1     1
ningunsaw pass  1-5             1-5              -2     0
telegraph crk   1-5             1-5              -7    -4

confidence..good on overall pattern in spite of it being so
disorganized. Main problem is precip amounts which will vary widely
in convection.

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