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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 101430 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 TUESDAY 10 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 30 18 850 3 72 28 2150 5 KAMLOOPS KEL 26 17 900 3 59 26 1950 4 OKANAGAN KEL 22 16 800 3 51 25 1800 4 CASTLEGAR GEG 17 17 800 3 52 26 1900 4 CRANBROOK GEG 9 16 950 5 60 24 1950 9 REVELSTOKE KEL 19 15 800 3 43 22 1550 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 TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 SE 9 S 11 CRANBROOK VR 5 S 11 INVERSION HT BREAKTHRU TEMP KELOWNA 1980 m 26 C SPOKANE 1130 m 22 C TODAY'S VENTING: ONLY FAIR DUE STRONG INVERSION AND LIGHT WINDS. VENTING FOR WEDNESDAY: FAIR VENTING OUTLOOK THURSDAY THRU SATURDAY: IMPROVING TO GOOD THURSDAY AS WINDS INCREASE AHEAD OF COLD FRONT. GOOD FRIDAY AND SATURDAY IN UNSTABLE AIRMASS. 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. 22 13 1250 4 77 21 2650 8 PR. GEORGE P.G. 15 11 900 3 74 19 2400 6 SMITHERS ANN 10 10 550 24 100 17 2250 29 WELLS GRAY P.G. 25 13 1400 4 80 22 2700 8 FT NLSN F.N. 13 12 550 3 100 19 1900 13 FT STJOHN F.N. 9 11 700 16 100 17 3100 11 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE S 17 SW 22 SMITHERS S 30 S 22 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1430 m 18 C FT. NELSON 820 m 16 C TODAY'S VENTING: BECOMING GOOD BY AFTERNOON AS SHALLOW INVERSION BREAKS. STRONG WINDS NEAR THE COAST MOUNTAINS AND LIGHT ELSEWHERE. VENTING FOR WEDNESDAY: FAIR VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD AS AIRMASS DESTABILIZES FOLLOWING COLD FRONT EARLY THURSDAY. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 19 16 300 5 50 21 1000 5 FRASER VLY QUIL 25 17 400 5 62 26 1400 5 SRN VRISL QUIL 20 16 250 5 55 23 1150 5 CNTRL VRISL QUIL 20 16 250 5 61 25 1350 5 NRN VRISL HRDY 9 11 200 0 36 18 1100 3 TERRACE ANN 65 13 1190 15 100 18 1850 27 STEWART ANN 53 13 900 8 100 18 1350 22 *SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER E 13 SE 20 S 22 PORT HARDY S 19 S 31 S 39 SANDSPIT S 70 S 76 S 83 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 2620 m 36 C PORT HARDY 580 m 19 C ANNETTE 120 m 14 C TODAY'S VENTING: GOOD NORTH WITH STRONG WINDS. FAIR LOCALLY POOR SOUTH UNDER STRONG INVERSION AND STAGNANT CIRCULATION PATTERN. VENTING FOR WEDNESDAY: FAIR TO GOOD. VENTING OUTLOOK THURSDAY THRU SATURDAY: IMPROVING TO GOOD THURSDAY AS AIRMASS DESTABILIZES FOLLOWING COLD FRONT. GOOD FRIDAY AND SATURDAY IN UNSTABLE AIR. 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: 32:07:39 This session: 00:01:18 --------Total Usage time: 32:08:57 Today's usage time: 00:05:16 This month's usage time: 00:44:56 ----This account expires: 12/31/96