2 FPCN39 CWLW 021430 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 2 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 35 20 550 10 90 27 1400 22 KAMLOOPS KEL 11 21 650 1 69 29 2500 4 OKANAGAN KEL 10 20 600 1 69 29 2500 4 CASTLEGAR GEG 25 21 800 6 68 30 1850 6 CRANBROOK GEG 9 21 950 10 100 29 3950 9 REVELSTOKE KEL 10 19 600 1 57 27 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 TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m PENTICTON VR 5 S 19 SW 35 CRANBROOK SW 11 SW 31 INVERSION HT BREAKTHRU TEMP KELOWNA 1100 m 23 C SPOKANE 1080 m 25 C TODAY'S VENTING: POOR BECOMING GOOD IN THE EARLY AFTERNOON ONCE THE HIGH BREAKTHRU TEMPERATURES ARE REACHED. VENTING FOR WEDNESDAY: FAIR. VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD THURSDAY AND FRIDAY UNDER UNSTABLE AIRMASS. FAIR SATURDAY UNDER BUILDING RIDGE. 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. 59 14 2250 5 100 21 3950 6 PR. GEORGE P.G. 25 13 900 8 100 20 3700 7 SMITHERS ANN 9 9 550 11 100 18 3500 7 WELLS GRAY P.G. 50 13 1900 5 100 21 4000 6 FT NLSN F.N. 83 13 900 22 100 18 2700 24 FT STJOHN F.N. 9 9 700 2 100 18 3700 25 *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 E 13 S 17 SMITHERS NE 9 VR 17 INVERSION HT BREAKTHRU TEMP PR. GEORGE 1050 m 16 C FT. NELSON 980 m 14 C TODAY'S VENTING: FAIR BECOMING GOOD NEAR NEAR NOON AS DAYTIME HEATING BREAKS SURFACE INVERSION. LOCALLY FAIR CENTRAL INTERIOR THIS AFTERNOON DUE TO LIGHT WINDS. VENTING FOR WEDNESDAY: GOOD VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD THURSDAY AND FRIDAY UNDER UNSTABLE AIRMASS. FAIR SATURDAY UNDER BUILDING RIDGE. COAST UPPER ***** MORNING ****** ***** AFTERNOON **** AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd (mASL) (kt) (mASL) (kt) VANCOUVER QUIL 43 17 550 8 74 22 1200 9 FRASER VLY QUIL 9 18 600 0 70 24 1300 7 SRN VRISL QUIL 9 17 550 0 68 23 1200 7 CNTRL VRISL QUIL 9 17 550 0 56 21 950 8 NRN VRISL HRDY 11 13 500 0 56 17 750 10 TERRACE ANN 73 13 1100 11 100 20 3200 8 STEWART ANN 48 13 500 9 100 20 2200 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 TUESDAY AFTERNOON (WINDS IN KM/H): 900m 1800m 2700m VANCOUVER SW 19 S 31 SW 52 PORT HARDY W 9 VR 5 VR 5 SANDSPIT N 35 N 19 VR 5 INVERSION HT BREAKTHRU TEMP QUILLAYUTE 610 m 17 C PORT HARDY 785 m 17 C ANNETTE NONE N/A TODAY'S VENTING: GOOD ON THE NORTH COAST. POOR ON THE SOUTH COAST UNTIL NEAR NOON WHEN BREAKTHRU TEMPERATURES ARE REACHED. VENTING FOR WEDNESDAY: GOOD VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD THURSDAY AND FRIDAY UNDER UNSTABLE AIRMASS. FAIR SATURDAY UNDER BUILDING RIDGE. VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/JEM -------------------------------------------------- Special Industry Related Information -------------------------------------------------- 1 - Smoke Forecast, Coast 2 - Smoke Forecast, Interior Q - Return to Previous menu -------------------------------------------------- l Previous usage time: 26:16:27 This session: 00:01:18 --------Total Usage time: 26:17:45 Today's usage time: 00:05:19 This month's usage time: 00:10:30 ----This account expires: 12/31/96