2 FPCN39 CWLW 281533 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 PST FRIDAY 28 MARCH 1997 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 38 8 900 5 100 11 2400 16 KAMLOOPS KEL 48 7 1100 6 100 12 3350 22 OKANAGAN KEL 47 7 1050 6 100 11 2700 18 CASTLEGAR SPOK 47 5 750 19 100 11 2600 25 CRANBROOK SPOK 100 4 1900 30 100 7 2700 30 REVELSTOKE KEL 11 4 550 2 66 7 1350 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 W 13 W 26 W 39 CRANBROOK NW 13 W 37 TODAY'S VENTING: GOOD. VENTING FOR SATURDAY: 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. 11 3 950 22 100 7 1850 22 PR. GEORGE P.G. 9 3 700 4 100 6 1900 15 SMITHERS P.G. 9 1 500 4 75 4 1700 10 WELLS GRAY P.G. 11 3 1000 22 70 7 1500 22 FT NLSN F.N. 47 -5 1250 5 48 -4 1200 6 FT STJOHN F.N. 59 -1 1700 6 60 4 1700 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE SW 44 W 65 SMITHERS SW 46 SW 65 TODAY'S VENTING: GOOD. VENTING FOR SATURDAY: GOOD COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 21 7 150 14 100 10 1650 20 FRASER VLY QUIL 9 7 50 14 100 11 1900 21 SRN VRISL QUIL 56 8 450 14 100 11 1750 19 CNTRL VRISL QUIL 14 4 230 5 50 7 850 10 NRN VRISL HRDY 27 5 200 10 97 7 900 18 TERRACE ANT 10 2 200 13 38 4 350 13 STEWART ANT 9 4 150 6 38 4 250 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 30 W 35 W 35 PORT HARDY SW 44 SW 56 SW 52 SANDSPIT SW 54 SW 67 SW 78 TODAY'S VENTING: GOOD EXCEPT LOCALLY FAIR INLAND SECTIONS OF NORTH COAST. VENTING FOR SATURDAY: GOOD VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/MWSO-KAL -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 48:10:39 This session: 00:01:23 --------Total Usage time: 48:12:02 Today's usage time: 00:05:34 This month's usage time: 02:25:29 ----This account expires: 12/31/97