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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 121430 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 SATURDAY 12 OCTOBER 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 15 10 300 4 50 16 1300 10 KAMLOOPS KEL 9 10 500 0 60 16 1550 10 OKANAGAN KEL 9 11 600 0 30 15 1450 2 CASTLEGAR GEG 23 12 750 6 32 14 850 7 CRANBROOK GEG 9 11 950 2 40 15 1400 13 REVELSTOKE KEL 9 10 450 2 11 11 750 1 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON S 11 S 24 SW 46 CRANBROOK SW 13 SW 35 INVERSION HT BREAKTHRU TEMP KELOWNA 1500 m 17 C SPOKANE 1500 m 17 C TODAY'S VENTING: A weak ridge of high pressure will result in stable conditions and light winds for today. However, increasing winds in Kamloops will produce good venting this afternoon. VENTING FOR SUNDAY: Good. VENTING OUTLOOK MONDAY THRU WEDNESDAY: A series of frontal systems will result in fair to good venting all three days. 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. 15 5 1000 10 100 11 1500 20 PR. GEORGE P.G. 15 3 900 3 54 10 1400 10 SMITHERS ANN 9 2 500 33 9 7 500 33 WELLS GRAY P.G. 9 4 1000 10 100 10 2000 20 FT NLSN F.N. 9 m2 400 0 40 9 750 10 FT STJOHN F.N. 9 2 750 3 40 11 1050 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 SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE S 43 S 54 SMITHERS SE 41 S 54 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1000 m 12 C FT. NELSON missing ## C TODAY'S VENTING: With the exception of Williams Lake and Wells Gray venting will be generally fair. VENTING FOR SUNDAY: Good. VENTING OUTLOOK MONDAY THRU WEDNESDAY: A series of frontal systems will result in fair to good venting all three days. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 56 13 450 16 100 15 1050 21 FRASER VLY QUIL 16 12 200 6 100 16 1400 19 SRN VRISL QUIL 17 12 150 6 87 15 800 17 CNTRL VRISL QUIL 12 10 100 4 100 16 1300 19 NRN VRISL HRDY 48 12 250 20 69 13 450 19 TERRACE ANN 9 7 200 29 100 12 1050 34 STEWART ANN 9 8 0 11 12 12 50 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 SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER S 50 S 65 S 67 PORT HARDY S 52 S 63 S 69 SANDSPIT S 50 S 54 S 59 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 700 m 15 C PORT HARDY 600 m 13 C ANNETTE none m ## C TODAY'S VENTING: Winds associated with a strong frontal system will give good venting today. VENTING FOR SUNDAY: Good. VENTING OUTLOOK MONDAY THRU WEDNESDAY: A series of frontal systems will result in fair to good venting all three days. 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: 34:42:41 This session: 00:01:20 --------Total Usage time: 34:44:01 Today's usage time: 00:05:24 This month's usage time: 00:57:36 ----This account expires: 12/31/96