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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 161430 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 FRIDAY 16 AUGUST 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 18 24 750 2 100 29 3200 8 KAMLOOPS KEL 43 24 1550 3 100 31 3350 8 OKANAGAN KEL 12 20 500 2 100 27 3350 8 CASTLEGAR GEG 26 21 800 6 81 29 1600 10 CRANBROOK GEG 9 22 950 13 100 30 3950 18 REVELSTOKE KEL 10 20 500 2 100 26 3450 8 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON SW 10 SW 15 SW 20 CRANBROOK SW 15 SW 30 INVERSION HT BREAKTHRU TEMP KELOWNA 790 m 22 C SPOKANE 1010 m 28 C TODAY'S VENTING: GOOD BY AFTERNOON ONCE INVERSION BREAKS. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: GOOD SUNDAY AND MONDAY. DETERIORATING TO FAIR TUESDAY UNDER SETTLING RIDGE AND LIGHT WINDS. 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. 87 13 2100 11 100 18 3950 14 PR. GEORGE P.G. 27 11 950 7 100 17 3700 12 SMITHERS ANN 19 11 950 2 72 15 2250 5 WELLS GRAY P.G. 83 12 2050 11 100 19 4000 14 FT NLSN F.N. 9 13 400 6 59 16 850 14 FT STJOHN F.N. 9 12 700 17 98 16 1850 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE SW 30 SW 40 SMITHERS W 30 NW 30 INVERSION HT BREAKTHRU TEMP PR. GEORGE 920 m 12 C FT. NELSON 760 m 17 C TODAY'S VENTING: BECOMING GOOD BY AFTERNOON BUT LOCALLY FAIR EXTREME NORTHEASTERN BC DUE PERSISTENT INVERSION UNDER AREA OF RAIN. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: GOOD DETERIORATING TO FAIR TUESDAY UNDER SETTLING RIDGE AND LIGHTER WINDS. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 45 18 700 7 89 21 1600 9 FRASER VLY QUIL 43 18 650 7 97 22 1850 9 SRN VRISL QUIL 36 17 500 6 78 21 1350 8 CNTRL VRISL QUIL 31 16 400 6 57 20 900 7 NRN VRISL HRDY 9 13 0 5 58 16 750 9 TERRACE ANN 9 13 250 2 64 17 1850 5 STEWART ANN 15 13 150 4 37 17 1150 3 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 20 SW 25 W 30 PORT HARDY SW 15 SW 20 W 25 SANDSPIT NW 15 NW 20 NW 25 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 840 m 20 C PORT HARDY 100 m 14 C ANNETTE 160 m 12 C TODAY'S VENTING: GOOD SOUTH COAST BUT GENERALLY ONLY FAIR NORTH COAST BECOMING BRIEFLY GOOD LATE IN THE DAY WHEN INVERSION FINALLY BREAKS. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: GOOD DETERIORATING TO FAIR OVER SOUTH COAST TUESDAY UNDER SETTLING RIDGE AND LIGHT WINDS. 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: 30:06:26 This session: 00:01:19 --------Total Usage time: 30:07:45 Today's usage time: 00:05:17 This month's usage time: 01:26:58 ----This account expires: 12/31/96