2 FPCN39 CWLW 191534 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 WEDNESDAY 19 FEBRUARY 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 5 200 4 62 7 1250 6 KAMLOOPS KEL 18 5 550 4 58 7 1200 8 OKANAGAN KEL 9 4 350 4 58 6 1250 7 CASTLEGAR SPOK 9 2 500 10 58 4 1200 10 CRANBROOK SPOK 9 1 950 36 58 3 1250 16 REVELSTOKE KEL 9 1 450 4 58 2 1250 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON SW 9 W 22 W 46 CRANBROOK W 17 W 43 TODAY'S VENTING: GOOD. VENTING FOR THURSDAY: FAIR TO 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. 9 1 950 26 61 4 1550 26 PR. GEORGE P.G. 10 3 700 7 60 5 1500 7 SMITHERS P.G. 9 2 550 7 69 5 1550 7 WELLS GRAY P.G. 11 2 1000 26 61 5 1500 26 FT NLSN F.N. 9 -14 550 0 17 -12 700 3 FT STJOHN F.N. 30 -7 1150 5 32 -5 1200 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE SW 35 W 39 SMITHERS SW 37 SW 39 TODAY'S VENTING: POOR TO GOOD. VENTING FOR THURSDAY: POOR TO GOOD. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 9 7 100 14 65 9 1500 15 FRASER VLY QUIL 15 8 150 5 91 10 1500 15 SRN VRISL QUIL 11 7 50 5 85 10 1500 15 CNTRL VRISL QUIL 33 4 350 5 61 7 1550 15 NRN VRISL HRDY 19 5 200 6 85 8 1000 15 TERRACE ANT 11 3 200 42 61 5 1500 15 STEWART ANT 9 4 0 20 69 5 1555 15 *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 W 48 W 54 PORT HARDY W 43 W 56 W 50 SANDSPIT W 57 W 61 W 56 TODAY'S VENTING: GOOD. VENTING FOR THURSDAY: FAIR. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/ -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu --------------------------------------------------