FPCN39 CWLW 031528
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 MONDAY 3 NOVEMBER 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 70 11 500 20 80 13 1100 12
KAMLOOPS KEL 70 11 1000 15 80 13 1600 10
OKANAGAN KEL 9 9 350 8 34 12 1350 3
CASTLEGAR SPOK 27 7 800 6 32 9 900 6
CRANBROOK SPOK 9 2 950 5 9 7 950 10
REVELSTOKE KEL 9 7 450 5 9 8 450 5
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON SW 11 W 33 W 78
CRANBROOK W 20 W 63
TODAY'S VENTING: Fair to good.
VENTING FOR TUESDAY: 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. 57 6 1550 10 79 8 2050 10
PR. GEORGE P.G. 18 3 850 5 28 6 1000 6
SMITHERS P.G. 11 3 700 1 28 7 1000 4
WELLS GRAY P.G. 62 6 1700 10 99 9 2650 10
FT NLSN F.N. 9 -1 400 12 46 0 750 12
FT STJOHN F.N. 70 3 1350 13 85 5 1600 14
*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.
FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE VR 5 W 9
SMITHERS SW 19 SW 9
TODAY'S VENTING: Good.
VENTING FOR TUESDAY: Fair.
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 19 12 150 11 56 13 350 22
FRASER VLY QUIL 9 11 50 11 55 13 300 22
SRN VRISL QUIL 9 11 0 7 29 13 250 9
CNTRL VRISL QUIL 13 12 100 7 29 13 250 9
NRN VRISL HRDY 18 10 100 13 57 11 400 15
TERRACE ANT 10 6 250 11 10 8 250 11
STEWART ANT 15 9 250 3 10 8 50 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 MONDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
VANCOUVER W 37 W 54 W 67
PORT HARDY W 28 W 41 W 50
SANDSPIT SW 30 SW 33 SW 39
TODAY'S VENTING: Good.
VENTING FOR TUESDAY: Fair.
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
END/DB