2 FPCN39 CWLW 291430 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 29 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 26 12 550 5 72 16 1500 7 KAMLOOPS KEL 73 15 1700 7 97 20 3350 5 OKANAGAN KEL 61 14 1400 7 97 19 3350 5 CASTLEGAR GEG 87 13 1450 13 100 18 3500 12 CRANBROOK GEG 100 12 3950 12 100 17 3950 12 REVELSTOKE KEL 57 13 1350 7 97 18 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 W 9 W 13 CRANBROOK VR 5 SW 15 INVERSION HT BREAKTHRU TEMP KELOWNA 685 m 11 C SPOKANE 1005 m 10 C TODAY'S VENTING: GOOD. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THROUGH SUNDAY: GOOD ON FRIDAY AS THE AIRMASS REMAINS UNSTABLE. FAIR TO GOOD SATURDAY AND SUNDAY AFTERNOONS AS A BUILDING RIDGE BRINGS WARMING ALOFT. 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. 9 7 950 10 100 15 3950 8 PR. GEORGE P.G. 36 9 1000 10 99 15 2750 8 SMITHERS ANN 9 9 550 3 59 16 2200 4 WELLS GRAY P.G. 77 10 2050 10 100 16 4000 8 FT NLSN F.N. 9 8 390 3 57 16 1600 5 FT STJOHN F.N. 35 12 1150 7 85 16 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PR. GEORGE N 26 NE 31 SMITHERS N 9 N 31 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1158 m 13 C FT. NELSON 715 m 14 C TODAY'S VENTING: BECOMING GOOD. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THROUGH SUNDAY: GOOD ON FRIDAY AND SATURDAY AS THE AIRMASS REMAINS UNSTABLE. ON SUNDAY VENTING WILL ONLY BE FAIR TO GOOD AS THE BUILDING RIDGE STARTS TO AFFECT THE NORTH. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 82 14 1400 9 96 17 1800 9 FRASER VLY QUIL 74 13 1250 8 93 17 1750 9 SRN VRISL QUIL 71 13 1200 7 92 17 1700 9 CNTRL VRISL QUIL 61 12 950 7 97 18 1850 9 NRN VRISL HRDY 70 12 950 9 78 15 1150 9 TERRACE ANN 9 13 250 3 78 21 2650 4 STEWART ANN 33 13 350 8 74 21 2200 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 WEDNESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER W 22 W 22 NW 22 PORT HARDY NW 24 NW 24 N 19 SANDSPIT NW 17 VR 5 VR 5 INVERSION HT BREAKTHRU TEMP QUILLAYUTE NO INVERSION PORT HARDY 1742 m 20 C ANNETTE 1835 m 18 C TODAY'S VENTING: GOOD. VENTING FOR THURSDAY: GOOD VENTING OUTLOOK FRIDAY THROUGH SUNDAY: FAIR TO GOOD FRIDAY AND SATURDAY AFTERNOON BUT ONLY FAIR SUNDAY AFTERNOON AS A SURFACE RIDGE BUILDS IN FROM THE PACIFIC. 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: 22:50:47 This session: 00:01:26 --------Total Usage time: 22:52:13 Today's usage time: 00:06:55 This month's usage time: 03:05:48 ----This account expires: 12/31/96 NO CARRIER