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FPCN39 CWLW 111530
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 PST SATURDAY 11 JANUARY 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 9 2 200 1 11 2 200 1
KAMLOOPS KEL 9 -2 350 1 13 1 350 1
OKANAGAN KEL 9 1 350 1 13 2 350 1
CASTLEGAR SPOK 13 3 500 7 26 3 750 7
CRANBROOK SPOK 13 -3 1000 9 13 -1 1000 9
REVELSTOKE KEL 9 -2 450 1 9 1 450 1
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON VR 5 NE 19 NE 50
CRANBROOK E 13 E 30
TODAY'S VENTING: POOR DUE TO STRONG INVERSION ACROSS DISTRICTS
VENTING FOR SUNDAY: POOR
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. 36 -3 1150 13 40 -2 1200 13
PR. GEORGE P.G. 25 -10 950 7 26 -9 950 7
SMITHERS P.G. 44 -1 1150 7 43 -1 1100 7
WELLS GRAY P.G. 25 -5 1150 13 29 -4 1150 13
FT NLSN F.N. 19 -19 600 5 20 -17 600 5
FT STJOHN F.N. 9 -19 700 9 9 -15 700 9
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE S 9 NE 11
SMITHERS S 17 SW 11
TODAY'S VENTING: POOR TO FAIR DUE TO STRONG INVERSION OVER DISTRICTS.
VENTING FOR SUNDAY: POOR
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 9 3 100 3 17 8 500 2
FRASER VLY QUIL 9 1 50 1 9 6 50 1
SRN VRISL QUIL 9 6 100 0 9 7 50 0
CNTRL VRISL QUIL 9 5 150 0 9 4 50 0
NRN VRISL HRDY 11 5 150 1 23 8 600 3
TERRACE ANT 9 2 200 15 9 3 200 20
STEWART ANT 9 3 50 4 9 1 50 4
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
VANCOUVER E 24 E 20 NE 20
PORT HARDY SE 26 E 11 SE 9
SANDSPIT S 52 S 43 S 44
TODAY'S VENTING: POOR.
VENTING FOR SUNDAY: POOR
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
END/MWSO
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2 - Smoke Forecast, Interior
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