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FPCN39 CWLW 161433
SMOKE CONTROL FORECAST FOR COASTAL BC AND THE INTERIOR INCLUDING THE
NORTHEAST ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF
ENVIRONMENT CANADA AT 8:00 AM PDT WEDNESDAY 16 APRIL 1997 FOR TODAY.
VENTILATION INDICES (TEMPERATURE) AND MIXING HEIGHTS.
MIXING HEIGHTS IN METRES ABOVE SEA LEVEL.
AVERAGE WINDS IN KNOTS.
SPOT INDICES ARE DETERMINED BY THE ASPECT AND ELEVATION OF THE SITES.
COMPARE WINDS, TEMPERATURES AND ELEVATION WITH THE SITES HERE
TO DETERMINE THE INDEX IN ANY OTHER AREA.
SOUTHERN INTERIOR
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
FRSR CANYN KEL 32 12 300 20 56 15 650 20
KAMLOOPS KEL 18 12 550 8 40 14 700 10
OKANAGAN KEL 9 10 500 1 36 14 750 8
CASTLEGAR SPOK 16 9 750 3 35 14 900 8
CRANBROOK SPOK 9 8 1050 4 40 13 1200 10
REVELSTOKE KEL 9 6 450 1 17 10 550 6
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON SW 11 SW 28 SW 50
CRANBROOK SW 19 SW 57
TODAY'S VENTING: Fair.
VENTING FOR THURSDAY: Good.
CENTRAL INTERIOR/NORTHEAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
WILLIAMS L P.G. 18 10 1000 12 42 12 1200 16
PR. GEORGE P.G. 9 9 700 4 56 12 1200 13
SMITHERS P.G. 9 6 500 4 55 11 950 14
WELLS GRAY P.G. 19 8 1000 13 47 13 1300 15
FT NLSN F.N. 9 6 400 0 33 12 650 8
FT STJOHN F.N. 9 5 750 5 57 11 1300 8
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE SW 26 SW 41
SMITHERS SW 28 SW 41
TODAY'S VENTING: Fair to good.
VENTING FOR THURSDAY: Fair to good.
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 16 11 200 8 59 14 800 13
FRASER VLY QUIL 18 11 200 7 57 14 800 12
SRN VRISL QUIL 16 11 200 4 56 14 800 12
CNTRL VRISL QUIL 20 11 250 8 63 14 800 15
NRN VRISL HRDY 10 10 450 0 54 12 1000 10
TERRACE ANT 9 6 200 7 85 9 1350 11
STEWART ANT 21 8 250 5 45 9 650 7
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
VANCOUVER SW 33 SW 44 SW 56
PORT HARDY SW 33 SW 39 SW 46
SANDSPIT S 37 S 41 S 43
TODAY'S VENTING: Good.
VENTING FOR THURSDAY: Good.
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
END/..
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2 - Smoke Forecast, Interior
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