2 FPCN39 CWLW 051433 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 THURSDAY 5 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 24 14 700 3 100 18 2500 10 KAMLOOPS KEL 53 14 1700 4 97 19 3350 5 OKANAGAN KEL 13 11 550 2 97 18 3350 5 CASTLEGAR GEG 23 11 800 5 43 15 950 9 CRANBROOK GEG 9 9 950 11 100 15 3050 16 REVELSTOKE KEL 15 11 650 3 59 14 2100 4 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON W 9 W 19 W 31 CRANBROOK W 11 W 24 INVERSION HT BREAKTHRU TEMP KELOWNA 130 m 13 C SPOKANE 950 m 14 C TODAY'S VENTING: BECOMING GOOD BY AFTERNOON AS INVERSION BREAKS. LOCALLY POOR EASTERN VALLEYS DUE LIGHTER WINDS. VENTING FOR FRIDAY: GOOD VENTING OUTLOOK SATURDAY THRU MONDAY: DETERIORATING TO FAIR BY SUNDAY AS HIGH PRESSURE SETTLES IN. 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. 23 8 1200 5 93 14 2450 5 PR. GEORGE P.G. 26 9 950 7 83 15 2450 6 SMITHERS ANN 23 11 900 4 46 14 1500 4 WELLS GRAY P.G. 34 7 1500 6 93 12 2260 5 FT NLSN F.N. 9 2 400 5 40 12 1310 5 FT STJOHN F.N. 36 8 1200 6 97 12 2350 10 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE W 19 W 19 SMITHERS W 24 W 19 INVERSION HT BREAKTHRU TEMP PR. GEORGE 950 m 12 C FT. NELSON 1430 m 13 C TODAY'S VENTING: FAIR TO GOOD. ELEVATED INVERSIONS WESTERN INTERIOR AND NORTHEAST BC LIMITING DEEP MIXING. VENTING FOR FRIDAY: FAIR VENTING OUTLOOK SATURDAY THRU MONDAY: IMPROVING TO GOOD SATURDAY WITH STRENGTHENING WINDS DETERIORATING TO POOR MONDAY AS HIGH PRESSURE SETTLES IN. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 44 14 550 9 89 17 1150 13 FRASER VLY QUIL 36 14 500 7 95 18 1300 13 SRN VRISL QUIL 33 14 400 7 82 17 1350 11 CNTRL VRISL QUIL 9 12 50 3 53 15 1330 8 NRN VRISL HRDY 9 13 250 0 34 15 1400 3 TERRACE ANN 40 15 1100 4 70 18 1950 5 STEWART ANN 15 14 200 3 48 18 1250 4 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 20 W 26 W 30 PORT HARDY W 17 W 20 W 26 SANDSPIT W 20 W 22 W 24 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 120 m 12 C PORT HARDY 100 m 12 C ANNETTE 220 m 14 C TODAY'S VENTING: GENERALLY GOOD BY AFTERNOON AS WINDS STRENGTHEN. EXCEPT LOCALLY FAIR CENTRAL/NORTH COAST INLETS DUE LIGHT WINDS. VENTING FOR FRIDAY: GOOD VENTING OUTLOOK SATURDAY THRU MONDAY: GOOD DETERIORATING TO FAIR SUNDAY AND FAIR TO POOR MONDAY AS HIGH PRESSURE SETTLES IN. 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: 31:41:17 This session: 00:01:24 --------Total Usage time: 31:42:41 Today's usage time: 00:05:22 This month's usage time: 00:18:40 ----This account expires: 12/31/96