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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 101441 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 FRIDAY 10 MAY 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 10 1300 2 92 15 3200 5 KAMLOOPS KEL 35 10 1750 2 92 16 3350 5 OKANAGAN KEL 35 10 1750 2 92 15 3350 5 CASTLEGAR GEG 23 8 850 4 95 14 3500 5 CRANBROOK GEG 9 6 950 4 98 11 3950 6 REVELSTOKE KEL 21 7 1150 2 92 12 3450 5 *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 VR 5 W 15 SW 22 CRANBROOK SW 9 SW 24 INVERSION HT BREAKTHRU TEMP KELOWNA SFC SPOKANE 1200 m 9 C TODAY'S VENTING: SHALLOW INVERSIONS AT ALL UPPER SITES EXCEPT KELOWNA. VENTING WILL IMPROVE TO GOOD AT ALL INTERIOR AS THE INVERSION BREAKS NEAR NOON. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: WEEK RIDGING FOR WEEKEND SHOULD NOT BE SUFFICIENT TO REDUCE VENTING BELOW THE GOOD CATEGORY IN THE AFTERNOONS. INVERSIONS LIKELY STRONGER IN THE MORNING SO VENTING WINDOW WILL BE REDUCED. 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. 74 3 2500 6 100 8 3950 6 PR. GEORGE P.G. 36 3 1250 5 98 9 3700 6 SMITHERS ANN 9 2 500 20 100 9 3500 15 WELLS GRAY P.G. 78 3 2800 6 100 10 4000 6 FT NLSN F.N. 12 1 500 3 76 7 2800 4 FT STJOHN F.N. 9 1 700 3 86 7 3700 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE N 15 VR 5 SMITHERS NE 15 E 5 INVERSION HT BREAKTHRU TEMP PR. GEORGE 650 m 0 C FT. NELSON 580 m 4 C TODAY'S VENTING: GOOD VENTING BY NOON AS SURFACE INVERSION BREAKS. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: WEEK RIDGING FOR WEEKEND SHOULD NOT BE SUFFICIENT TO REDUCE VENTING BELOW THE GOOD CATEGORY IN THE AFTERNOONS. INVERSIONS LIKELY STRONGER IN THE MORNING SO VENTING WINDOW WILL BE REDUCED. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 39 7 1350 3 82 14 1400 4 FRASER VLY QUIL 61 10 1450 5 84 15 2450 5 SRN VRISL QUIL 59 10 1300 5 82 14 2300 5 CNTRL VRISL QUIL 19 7 250 5 79 13 2200 5 NRN VRISL HRDY 56 8 800 8 98 12 2200 8 TERRACE ANN 10 8 250 20 100 14 3200 16 STEWART ANN 12 7 50 6 100 14 3000 15 *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 13 SW 17 W 20 PORT HARDY VR 5 VR 5 S 11 SANDSPIT NE 19 NE 17 NE 17 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 310 m 7 C PORT HARDY SFC ANNETTE 60 m 9 C TODAY'S VENTING: SHALLOW INVERSIONS AT ALL UPPER SITES EXCEPT PORT HARDY. VENTING WILL IMPROVE TO GOOD AT ALL INTERIOR AS THE INVERSION BREAKS NEAR NOON. VENTING FOR SATURDAY: GOOD VENTING OUTLOOK SUNDAY THRU TUESDAY: WEEK RIDGING FOR WEEKEND SHOULD NOT BE SUFFICIENT TO REDUCE VENTING BELOW THE GOOD CATEGORY IN THE AFTERNOONS. INVERSIONS LIKELY STRONGER IN THE MORNING SO VENTING WINDOW WILL BE REDUCED. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/PJS -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 20:54:23 This session: 00:01:21 --------Total Usage time: 20:55:44 Today's usage time: 00:09:28 This month's usage time: 01:09:19 ----This account expires: 12/31/96 NO CARRIER