2 FPCN39 CWLW 221434 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 TUESDAY 22 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 45 10 850 6 100 20 3200 6 KAMLOOPS KEL 50 10 1100 7 100 19 3350 6 OKANAGAN KEL 35 8 800 6 100 18 3350 6 CASTLEGAR SPOK 22 9 850 4 92 18 3500 5 CRANBROOK SPOK 15 8 1150 3 98 15 3950 6 REVELSTOKE KEL 25 7 800 5 100 16 3450 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 TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 SE 11 SE 15 CRANBROOK VR 5 VR 5 TODAY'S VENTING: GOOD VENTING FOR WEDNESDAY: 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. 10 6 1050 1 67 15 3950 3 PR. GEORGE P.G. 12 5 900 2 64 15 3700 2 SMITHERS P.G. 14 6 900 2 64 15 3500 2 WELLS GRAY P.G. 11 6 1150 1 67 15 4000 3 FT NLSN F.N. 9 5 400 5 83 12 1350 12 FT STJOHN F.N. 9 6 700 19 100 12 3700 18 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE E 19 E 19 SMITHERS E 31 E 19 TODAY'S VENTING: GOOD VENTING FOR WEDNESDAY: GOOD COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 18 10 200 7 64 15 850 9 FRASER VLY QUIL 19 10 200 7 92 16 1300 12 SRN VRISL QUIL 19 9 150 7 52 15 700 8 CNTRL VRISL QUIL ## ## ### ## 78 16 1100 10 NRN VRISL HRDY 16 8 250 3 64 15 1050 5 TERRACE ANT 10 8 250 13 100 15 2200 16 STEWART ANT 15 9 100 6 100 15 1600 13 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SE 24 SE 31 S 35 PORT HARDY SE 37 SE 43 SE 50 SANDSPIT SE 48 SE 52 SE 57 TODAY'S VENTING: GOOD VENTING FOR WEDNESDAY: GOOD VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/MWSO -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 50:10:17 This session: 00:01:22 --------Total Usage time: 50:11:39 Today's usage time: 00:05:15 This month's usage time: 01:43:55 ----This account expires: 12/31/97