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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 281439 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 28 JUNE 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 65 19 750 15 100 24 3200 11 KAMLOOPS KEL 76 18 1650 8 100 25 3350 11 OKANAGAN KEL 76 18 1600 8 100 25 3350 11 CASTLEGAR GEG 58 16 1050 11 100 22 3500 19 CRANBROOK GEG 98 15 1700 22 100 19 3950 22 REVELSTOKE KEL 22 15 750 5 100 19 2550 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON W 11 W 22 W 33 CRANBROOK SW 13 W 30 INVERSION HT BREAKTHRU TEMP KELOWNA 760 m 18 C SPOKANE 1170 m 17 C TODAY'S VENTING: Poor early morning Columbias due light winds otherwise good. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: Fair in the mornings otherwise 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. 100 14 3950 18 100 19 3950 18 PR. GEORGE P.G. 100 14 2100 15 100 19 3700 18 SMITHERS ANN 100 12 2150 19 100 19 3500 19 WELLS GRAY P.G. 100 15 4000 18 100 20 4000 18 FT NLSN F.N. 9 16 500 0 100 21 1650 21 FT STJOHN F.N. 11 16 700 25 100 21 3700 19 *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 W 35 W 44 SMITHERS SW 28 SW 44 INVERSION HT BREAKTHRU TEMP PR. GEORGE none m 12 C FT. NELSON 620 m 19 C TODAY'S VENTING: Good except poor northeast BC til mid morning under shallow surface inversion. Upper trough swinging eastward across northern Interior should increase pressure gradient across northern Rockies tonight allowing good venting Saturday all areas. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: Good Sunday and Monday all areas. Poor Tuesday morning northeast BC as pressure gradient relaxes otherwise good. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 100 16 2000 14 100 19 2200 15 FRASER VLY QUIL 100 16 1900 12 100 21 2350 13 SRN VRISL QUIL 100 16 1700 12 100 20 2250 13 CNTRL VRISL QUIL 9 14 600 0 100 17 2050 12 NRN VRISL HRDY 13 12 300 2 88 15 1600 8 TERRACE ANN 100 13 1650 18 100 17 2700 18 STEWART ANN 100 14 1400 15 100 17 2150 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 17 W 22 W 31 PORT HARDY SW 20 SW 28 W 33 SANDSPIT SW 31 SW 35 SW 44 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 170 m 13 C PORT HARDY 290 m 13 C ANNETTE none m 11 C TODAY'S VENTING: Poor early morning Vancouver Island due light winds and shallow surface inversion otherwise good all areas. VENTING FOR SATURDAY: Good locally fair. VENTING OUTLOOK SUNDAY THRU TUESDAY: 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: 25:55:59 This session: 00:01:17 --------Total Usage time: 25:57:16 Today's usage time: 00:05:22 This month's usage time: 02:48:32 ----This account expires: 12/31/96