2 FPCN39 CWLW 251432 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 25 MAY 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 20 850 3 55 26 2050 3 KAMLOOPS KEL 19 17 750 3 38 22 1450 3 OKANAGAN KEL 14 15 550 2 49 24 1950 3 CASTLEGAR GEG 24 15 800 5 70 24 2500 13 CRANBROOK GEG 51 14 1300 14 70 23 2950 15 REVELSTOKE KEL 12 14 550 2 36 21 1400 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 SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 W 11 W 24 CRANBROOK VR 5 VR 5 INVERSION HT BREAKTHRU TEMP KELOWNA 1000 m 22 C SPOKANE 1000 m 19 C TODAY'S VENTING: FAIR TO POOR IN THE SOUTHWEST. GOOD IN THE KOOTENAYS. VENTING FOR SUNDAY: GOOD VENTING OUTLOOK MONDAY THRU WEDNESDAY: GENERALLY 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 15 2050 17 100 18 3950 23 PR. GEORGE P.G. 36 15 850 17 100 19 2750 22 SMITHERS ANN 100 11 2000 19 100 16 3500 22 WELLS GRAY P.G. 100 15 2400 20 100 20 4000 23 FT NLSN F.N. 9 15 400 6 100 19 2300 12 FT STJOHN F.N. 100 15 2000 13 100 19 2750 13 *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 24 W 35 SMITHERS W 30 W 35 INVERSION HT BREAKTHRU TEMP PR. GEORGE 800 m 16 C FT. NELSON 800 m 18 C TODAY'S VENTING: GOOD. VENTING FOR SUNDAY: GOOD. VENTING OUTLOOK MONDAY THRU WEDNESDAY: GENERALLY GOOD. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 42 15 550 8 57 19 950 7 FRASER VLY QUIL 38 15 550 7 60 21 1050 7 SRN VRISL QUIL 39 15 550 7 58 20 1000 7 CNTRL VRISL QUIL 39 15 550 7 58 20 1000 7 NRN VRISL HRDY 17 10 300 3 60 13 850 8 TERRACE ANN 100 11 1300 19 100 15 2200 19 STEWART ANN 78 11 800 14 100 15 1800 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 SATURDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER W 9 W 20 W 33 PORT HARDY NW 28 NW 30 W 35 SANDSPIT W 31 W 33 W 37 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 1100 m 18 C PORT HARDY 1000 m 11 C ANNETTE None n/a TODAY'S VENTING: GOOD. VENTING FOR SUNDAY: GOOD. VENTING OUTLOOK MONDAY THRU WEDNESDAY: GENERALLY GOOD. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/GF -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 22:26:26 This session: 00:01:21 --------Total Usage time: 22:27:47 Today's usage time: 00:05:24 This month's usage time: 02:41:22 ----This account expires: 12/31/96 NO CARRIER