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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 211430 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 21 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 28 13 600 5 60 15 1100 7 KAMLOOPS KEL 14 11 600 2 91 15 1900 9 OKANAGAN KEL 13 10 550 2 91 15 1900 9 CASTLEGAR GEG 21 11 900 3 80 15 1400 12 CRANBROOK GEG 29 8 1050 21 96 12 1700 21 REVELSTOKE KEL 10 8 500 2 40 12 950 7 *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 W 9 W 20 W 37 CRANBROOK W 11 W 30 INVERSION HT BREAKTHRU TEMP KELOWNA 550 m 12 C SPOKANE 1250 m 12 C TODAY'S VENTING: Good venting this afternoon due to an unstable airmass. VENTING FOR SUNDAY: Fair to good. VENTING OUTLOOK MONDAY THRU WEDNESDAY: Generally poor venting expected through the period as a ridge of high pressure builds over the interior. 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. 32 6 1200 10 100 10 3950 14 PR. GEORGE P.G. 19 7 950 4 100 11 2400 10 SMITHERS ANN 63 6 1350 9 100 10 2700 11 WELLS GRAY P.G. 81 7 1950 12 100 11 4000 14 FT NLSN F.N. 9 7 400 2 9 12 400 2 FT STJOHN F.N. 9 7 700 7 93 11 2350 9 *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 W 19 W 26 SMITHERS SW 15 W 26 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1400 m 10 C FT. NELSON 1350 m 13 C TODAY'S VENTING: With the exception of Fort Nelson venting will be good this afternoon due to an unstable airmass. VENTING FOR SUNDAY: Fair to good. VENTING OUTLOOK MONDAY THRU WEDNESDAY: Generally poor venting expected through the period as a ridge of high pressure builds over the interior. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 50 13 400 15 98 15 1150 16 FRASER VLY QUIL 14 12 150 5 90 15 1100 13 SRN VRISL QUIL 15 12 150 5 90 15 1100 13 CNTRL VRISL QUIL 11 10 50 5 16 13 150 5 NRN VRISL HRDY 25 11 300 6 75 13 1100 9 TERRACE ANN 51 8 850 8 100 12 2350 10 STEWART ANN 13 9 150 3 89 12 1700 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 SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 19 W 31 W 37 PORT HARDY W 15 W 22 W 31 SANDSPIT SW 30 SW 33 SW 35 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 150 m 12 C PORT HARDY 400 m 11 C ANNETTE 100 m 8 C TODAY'S VENTING: Good venting expected due to an unstable airmass. VENTING FOR SUNDAY: Fair. VENTING OUTLOOK MONDAY THRU WEDNESDAY: Generally poor venting expected through the period as a ridge of high pressure builds 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: 32:58:47 This session: 00:01:19 --------Total Usage time: 33:00:06 Today's usage time: 00:05:14 This month's usage time: 01:36:05 ----This account expires: 12/31/96