2 FPCN39 CWLW 271433 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 SUNDAY 27 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 9 13 200 7 100 16 1850 16 KAMLOOPS KEL 100 14 1800 15 100 18 2350 17 OKANAGAN KEL 9 12 350 7 100 17 2150 17 CASTLEGAR SPOK 9 12 500 8 60 17 1300 8 CRANBROOK SPOK 68 12 1200 34 100 17 2550 25 REVELSTOKE KEL 9 10 450 7 100 14 1950 16 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR SUNDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON W 13 W 24 W 33 CRANBROOK W 15 W 37 TODAY'S VENTING: GOOD. VENTING FOR MONDAY: 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. 100 8 3950 19 100 15 3950 19 PR. GEORGE P.G. 100 8 2150 19 100 15 3700 18 SMITHERS P.G. 60 7 950 16 100 14 3500 18 WELLS GRAY P.G. 100 8 4000 19 100 16 4000 19 FT NLSN F.N. 36 12 700 10 95 17 2000 10 FT STJOHN F.N. 67 11 1550 10 100 17 2600 10 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR SUNDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE W 28 W 35 SMITHERS SW 15 SW 35 TODAY'S VENTING: GOOD. VENTING FOR MONDAY: FAIR. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 100 11 1550 13 100 14 2100 14 FRASER VLY QUIL 100 12 1650 13 100 16 2400 15 SRN VRISL QUIL 87 11 1400 10 100 16 2350 13 CNTRL VRISL QUIL 95 9 1460 12 100 14 1950 12 NRN VRISL HRDY 34 8 350 8 100 12 1750 17 TERRACE ANT 88 7 1250 13 100 11 2650 15 STEWART ANT 41 8 500 7 100 11 1650 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 SUNDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 26 SW 30 SW 33 PORT HARDY SW 26 SW 30 SW 31 SANDSPIT S 22 S 20 SW 22 TODAY'S VENTING: GOOD. VENTING FOR MONDAY: GOOD VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/KAL -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 50:36:22 This session: 00:01:25 --------Total Usage time: 50:37:47 Today's usage time: 00:05:18 This month's usage time: 02:10:03 ----This account expires: 12/31/97