2 FPCN39 CWLW 041441 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 WEDNESDAY 4 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 22 14 850 2 57 18 2000 3 KAMLOOPS KEL 24 13 1000 3 62 18 2250 4 OKANAGAN KEL 9 10 600 0 55 17 2100 3 CASTLEGAR GEG 27 13 800 6 47 17 1050 8 CRANBROOK GEG 9 12 950 11 91 17 2100 12 REVELSTOKE KEL 22 12 1000 3 50 15 1950 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 VR 10 SW 15 CRANBROOK VR 5 SW 15 INVERSION HT BREAKTHRU TEMP KELOWNA 1220 m 14 C SPOKANE 1100 m 16 C TODAY'S VENTING: BECOMING GOOD IN THE WEST BY NOON AS INVERSION BREAKS. REMAINING ONLY FAIR EASTERN VALLEYS DUE SHALLOW MIXING. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD FRIDAY DETERIORATING TO FAIR ON THE WEEKEND 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. 83 9 1450 24 100 13 2200 20 PR. GEORGE P.G. 41 9 1050 11 100 15 2150 17 SMITHERS P.G. 9 8 670 2 50 15 1400 7 WELLS GRAY P.G. 10 8 1000 24 100 12 2150 20 FT NLSN F.N. 29 10 600 9 100 18 1950 12 FT STJOHN F.N. 9 6 700 17 88 12 1700 14 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE NE 17 NE 13 SMITHERS N 9 N 13 INVERSION HT BREAKTHRU TEMP PR. GEORGE NIL FT. NELSON 770 m 14 C TODAY'S VENTING: BECOMING GOOD BY LATE MORNING EXCEPT ONLY FAIR NORTHWESTERN INTERIOR DUE LIGHT WINDS. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD DETERIORATING TO FAIR CENTRAL INTERIOR SUNDAY 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 34 14 600 5 74 18 1950 5 FRASER VLY QUIL 9 14 550 0 74 19 2200 5 SRN VRISL QUIL 9 12 200 0 63 18 1800 4 CNTRL VRISL QUIL 9 13 250 0 63 18 1800 4 NRN VRISL HRDY 15 13 150 5 76 16 1050 10 TERRACE YAK 9 12 220 3 22 16 420 10 STEWART YAK 9 12 160 2 32 17 450 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER W 13 W 17 W 17 PORT HARDY W 15 NW 22 N 28 SANDSPIT NW 24 N 31 N 30 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 240 m 13 C PORT HARDY 110 m 14 C ANNETTE N/A TODAY'S VENTING: FAIR TO POOR NORTH COAST DUE DEEP INVERSION OTHERWISE IMPROVING TO GOOD BY AFTERNOON. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD DETERIORATING TO FAIR SOUTH COAST 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: 31:35:56 This session: 00:01:23 --------Total Usage time: 31:37:19 Today's usage time: 00:05:24 This month's usage time: 00:13:18 ----This account expires: 12/31/96