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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 171441 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 17 JULY 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 47 18 1354 4 90 24 1950 8 KAMLOOPS KEL 43 20 1354 5 95 25 2250 8 OKANAGAN KEL 49 20 1200 4 98 26 2350 8 CASTLEGAR GEG 37 19 934 5 92 26 1650 13 CRANBROOK GEG 47 18 1420 4 100 25 3950 18 REVELSTOKE KEL 42 20 1030 5 85 22 2000 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON SW 9 S 20 S 35 CRANBROOK S 11 S 24 INVERSION HT BREAKTHRU TEMP KELOWNA 590 m 16 C SPOKANE 1650 m 25 C TODAY'S VENTING: FAIR BECOMING GOOD THIS AFTERNOON AS BREAKS DEVELOP IN CLOUD ALLOWING CONVECTIVE MIXING. VENTING FOR THURSDAY: FAIR TO GOOD. VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD FRIDAY AND SATURDAY DUE CONVECTION AND GUSTY WINDS DIMINISHING TO FAIR BY SUNDAY AS HIGH PRESSURE SETTLES OVER DISTRICT BRINGING LIGHTER WINDS AND DEEPER SURFACE INVERSIONS. 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. 24 14 1033 6 100 16 2500 17 PR. GEORGE P.G. 48 16 1287 8 88 16 1650 14 SMITHERS P.G. 41 13 1254 5 75 15 1300 13 WELLS GRAY P.G. 25 13 1341 5 100 17 4000 16 FT NLSN F.N. 31 15 866 5 9 13 400 0 FT STJOHN F.N. 9 11 701 5 18 13 1000 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 PR. GEORGE E 17 SE 26 SMITHERS NE 41 E 48 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1410 m 17 C FT. NELSON 840 m 16 C TODAY'S VENTING: POOR NORTHEAST BC UNDER DEEP INVERSION OTHERWISE FAIR IN THE MORNING BECOMING GOOD BY AFTERNOON AS CONVECTIVE MIXING DEVELOPS. VENTING FOR THURSDAY: FAIR. VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD FRIDAY AND SATURDAY WITH BRISK WINDS AND CONVECTIVE MIXING. DIMINISHING TO FAIR SUNDAY WEST OF THE ROCKIES DUE LIGHTER WINDS. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 89 13 1447 10 100 19 2150 9 FRASER VLY QUIL 89 13 1416 10 100 20 2250 8 SRN VRISL QUIL 81 13 1416 8 99 19 2050 8 CNTRL VRISL QUIL 90 13 1416 10 99 19 2100 8 NRN VRISL HRDY 27 11 396 5 42 15 1300 3 TERRACE ANN 14 15 322 5 100 19 3200 13 STEWART ANN 26 13 353 5 60 19 700 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 19 SW 20 SW 20 PORT HARDY W 9 SW 9 SE 13 SANDSPIT N 39 N 39 NE 43 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 110 m 11 C PORT HARDY 110 m 12 C ANNETTE 360 m 16 C TODAY'S VENTING: GOOD SOUTH COAST. POOR CENTRAL AND NORTH MAINLAND COAST THIS MORNING DUE LIGHT WINDS BECOMING FAIR THIS AFTERNOON. VENTING FOR THURSDAY: FAIR TO GOOD. VENTING OUTLOOK FRIDAY THRU SUNDAY: GOOD FRIDAY DIMINISHING TO FAIR FOR WEEKEND DUE LIGHT WINDS AND DEEPER MARINE INVERSION. 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: 27:24:30 This session: 00:01:21 --------Total Usage time: 27:25:51 Today's usage time: 00:01:21 This month's usage time: 01:18:36 ----This account expires: 12/31/96