FPCN39 CWLW 061432
SMOKE CONTROL FORECAST FOR COASTAL BC AND THE INTERIOR INCLUDING THE
NORTHEAST ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF
ENVIRONMENT CANADA AT 7:00 AM PST FRIDAY 6 NOVEMBER 1998 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 6 200 2 39 8 200 2
KAMLOOPS KEL 9 6 350 2 56 8 1600 2
OKANAGAN KEL 9 6 350 2 56 8 1600 2
CASTLEGAR SPOK 28 6 850 6 61 8 1300 8
CRANBROOK SPOK 9 3 950 10 62 6 1650 10
REVELSTOKE KEL 9 4 450 2 32 7 600 2
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON VR 5 SE 13 SE 19
CRANBROOK VR 5 SE 15
TODAY'S VENTING: FAIR TO GOOD.
VENTING FOR SATURDAY: FAIR.
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. 15 4 1500 13 83 6 1850 13
PR. GEORGE P.G. 9 2 700 2 51 5 1250 9
SMITHERS P.G. 9 3 550 2 42 5 1000 8
WELLS GRAY P.G. 10 3 1000 13 85 6 1950 13
FT NLSN F.N. 9 0 400 3 9 0 400 3
FT STJOHN F.N. 21 0 850 8 21 0 850 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 FRIDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE E 15 VR 5
SMITHERS E 19 E 5
TODAY'S VENTING: POOR IN THE PEACE. FAIR TO GOOD CENTRAL INTERIOR.
VENTING FOR SATURDAY: POOR
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 10 8 100 25 100 12 1450 15
FRASER VLY QUIL 18 7 150 8 100 11 1000 15
SRN VRISL QUIL 21 8 200 7 100 12 1300 15
CNTRL VRISL QUIL 21 8 200 7 88 11 750 15
NRN VRISL HRDY 9 6 0 9 85 10 700 15
TERRACE ANT 9 4 200 7 89 5 1200 12
STEWART ANT 9 4 0 3 89 5 1200 12
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
VANCOUVER E 15 E 26 SE 24
PORT HARDY NE 9 E 19 E 19
SANDSPIT N 9 E 11 E 9
TODAY'S VENTING: GOOD.
VENTING FOR SATURDAY: GOOD.
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
END/