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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 231430 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 MONDAY 23 SEPTEMBER 1996 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 41 10 900 5 86 17 2550 5 KAMLOOPS KEL 24 8 800 4 85 16 2700 5 OKANAGAN KEL 11 7 600 1 85 16 2650 5 CASTLEGAR GEG 17 9 900 2 85 16 2750 5 CRANBROOK GEG 9 5 950 7 100 14 3000 7 REVELSTOKE KEL 43 9 1100 6 83 15 2650 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 VR 5 VR 5 VR 5 CRANBROOK VR 5 NW 20 INVERSION HT BREAKTHRU TEMP KELOWNA 1400 m 12 C SPOKANE 1000 m 10 C TODAY'S VENTING: The airmass is unstable enough at low levels that venting will become good for a few hours this afternoon. VENTING FOR TUESDAY: Poor. VENTING OUTLOOK WEDNESDAY THRU FRIDAY: Poor venting will continue through the period as a ridge of high pressure persists over the province. 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 3 950 12 80 11 2350 6 PR. GEORGE P.G. 36 5 950 12 80 12 2300 6 SMITHERS ANN 9 4 550 13 80 12 2300 10 WELLS GRAY P.G. 44 5 1350 12 80 9 2500 6 FT NLSN F.N. 9 6 400 9 100 14 2500 12 FT STJOHN F.N. 9 5 700 14 100 12 3700 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 VR 5 SW 9 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1450 m 10 C FT. NELSON 700 m 13 C TODAY'S VENTING: The airmass is unstable enough at low levels that venting will become good for a couple hours this afternoon. VENTING FOR TUESDAY: Poor. VENTING OUTLOOK WEDNESDAY THRU FRIDAY: Poor venting will continue through the period as a ridge of high pressure persists over the province. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 31 12 350 10 71 18 950 10 FRASER VLY QUIL 31 12 350 10 82 19 1250 10 SRN VRISL QUIL 22 11 200 7 60 18 800 9 CNTRL VRISL QUIL 22 11 200 7 97 21 1750 10 NRN VRISL HRDY 15 7 100 7 61 14 750 9 TERRACE ANN 9 10 50 5 100 13 1650 14 STEWART ANN 9 10 0 5 84 13 1050 11 *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 E 20 E 20 NE 9 PORT HARDY SE 13 S 9 S 11 SANDSPIT S 13 VR 5 SW 20 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 750 m 18 C PORT HARDY 750 m 15 C ANNETTE No inversion. TODAY'S VENTING: The airmass is unstable enough at low levels that venting will become good for a couple hours this afternoon. VENTING FOR TUESDAY: Poor. VENTING OUTLOOK WEDNESDAY THRU FRIDAY: Poor venting will continue through the period as a ridge of high pressure persists over the province. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/JDG -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 33:09:13 This session: 00:01:19 --------Total Usage time: 33:10:32 Today's usage time: 00:05:15 This month's usage time: 01:46:31 ----This account expires: 12/31/96