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If you are not a subscriber yet, enter basic when asked to login. 2 FPCN39 CWLW 021434 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 2 MAY 1997 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 40 11 900 5 100 19 3200 7 KAMLOOPS KEL 52 11 1300 6 100 19 3350 7 OKANAGAN KEL 45 10 1050 6 100 17 3350 7 CASTLEGAR SPOK 60 10 1300 8 100 16 3500 6 CRANBROOK SPOK 60 7 1650 10 93 14 3950 5 REVELSTOKE KEL 48 10 1300 6 100 16 3450 7 *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 S 11 S 22 S 31 CRANBROOK VR 5 S 13 INVERSION HT BREAKTHRU TEMP KELOWNA 900 m 10 C SPOKANE 1500 m 10 C TODAY'S VENTING: THE AIRMASS REMAINS UNSTABLE AT THE LOWER LEVELS IN THE WEST AND AT ALL LEVELS IN THE EAST. AS A RESULT VENTING BECOME GOOD BY THIS AFTERNOON. VENTING FOR SATURDAY: FAIR TO GOOD. VENTING OUTLOOK SUNDAY THRU TUESDAY: AN UPPER LOW WILL SIT JUST OFF OF VANCOUVER ISLAND AND ROTATE BANDS OF MOIST AND UNSTABLE AIR ACROSS THE INTERIOR. AS A RESULT VENTING WILL BE GOOD. 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. 30 7 1500 4 84 15 3950 4 PR. GEORGE P.G. 36 9 1450 4 84 16 3700 4 SMITHERS P.G. 14 6 750 2 81 14 3500 4 WELLS GRAY P.G. 34 8 1700 4 84 16 4000 4 FT NLSN F.N. 16 6 450 10 70 12 1750 6 FT STJOHN F.N. 24 7 950 7 94 13 3700 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 PR. GEORGE SE 11 SE 19 SMITHERS E 24 E 19 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1700 m 13 C FT. NELSON 700 m 10 C TODAY'S VENTING: THE AIRMASS REMAINS UNSTABLE ENOUGH TODAY THAT THE VENTING WILL BECOME GOOD EARLY THIS AFTERNOON. VENTING FOR SATURDAY: FAIR TO GOOD. VENTING OUTLOOK SUNDAY THRU TUESDAY: AN UPPER LOW WILL SIT JUST OFF OF VANCOUVER ISLAND AND ROTATE BANDS OF MOIST AND UNSTABLE AIR ACROSS THE INTERIOR. AS A RESULT VENTING WILL BE GOOD. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 28 9 300 9 80 14 1200 10 FRASER VLY QUIL 32 10 350 9 70 17 1200 6 SRN VRISL QUIL 22 9 300 5 90 15 1250 12 CNTRL VRISL QUIL 20 8 250 5 85 13 1200 11 NRN VRISL HRDY 27 8 250 8 100 13 1200 18 TERRACE ANT 9 9 250 5 100 16 2700 16 STEWART ANT 22 10 400 3 100 16 2100 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 FRIDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SE 24 S 39 S 44 PORT HARDY SE 41 SE 52 SE 54 SANDSPIT SE 56 SE 61 SE 57 INVERSION HT BREAKTHRU TEMP QUILLAYUTE #### m ## C PORT HARDY #### m ## C ANNETTE #### m ## C TODAY'S VENTING: AN APPROACHING FRONTAL SYSTEM FROM THE SOUTHWEST WILL CAUSE INCREASING WINDS OVER MOST AREAS TODAY. AS A RESULT VENTING WILL BECOME GOOD THIS AFTERNOON. THE FAR NORTH REMAINS UNSTABLE ENOUGH AT LOW LEVELS FOR GOOD VENTING THIS AFTERNOON. VENTING FOR SATURDAY: GOOD. VENTING OUTLOOK SUNDAY THRU TUESDAY: AN UPPER LOW WILL BE SITUATED JUST WEST OF VANCOUVER AND PROVIDE A MOIST UNSTABLE AIRMASS OVER THE COAST. AS A RESULT VENTING WILL CONTINUE TO BE GOOD. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/JDG -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 50:58:41 This session: 00:01:20 --------Total Usage time: 51:00:01 Today's usage time: 00:05:22 This month's usage time: 00:08:02 ----This account expires: 12/31/97