FPCN39 CWLW 181330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT WEDNESDAY 18 APRIL 2001 FOR TODAY. MIXING HEIGHTS IN METRES ABOVE SEA LEVEL. AVERAGE WINDS IN KM/H. SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF LOCAL MOUNTAINS OR HILLS. 18-April-2001 SOUTHERN INTERIOR TODAY TOMORROW 7:00 AM 4:00 PM 4:00 PM VI WND MXG HT VI WND MXG HT VI WND MXG HT KM/H M KM/H M KM/H M FRASER CANYON 31/POOR 14 543 72/GOOD 13 1500 60/GOOD 5 2625 KAMLOOPS 70/GOOD 12 1650 99/GOOD 20 2387 79/GOOD 8 2785 OKANAGAN 56/GOOD 14 1227 99/GOOD 18 2679 70/GOOD 7 2714 CASTLEGAR 12/POOR 4 636 86/GOOD 12 2436 74/GOOD 6 3369 CRANBROOK 10/POOR 5 972 59/GOOD 11 2023 77/GOOD 9 3034 REVELSTOKE 36/FAIR 7 1232 58/GOOD 8 1867 58/GOOD 7 2074 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON SW 9 SW 28 SW 48 CRANBROOK SW 13 W 35 CENTRAL INTERIOR TODAY TOMORROW 7:00 AM 4:00 PM 4:00 PM VI WND MXG HT VI WND MXG HT VI WND MXG HT KM/H M KM/H M KM/H M QUESNEL 61/GOOD 21 1131 99/GOOD 20 2904 92/GOOD 12 2774 100 MILE 88/GOOD 19 2214 99/GOOD 16 3315 93/GOOD 11 3425 WILLIAMS LAKE 61/GOOD 22 1511 99/GOOD 16 3313 99/GOOD 13 3549 PUNTZI MTN 14/POOR 13 978 99/GOOD 19 3097 91/GOOD 13 2939 PRINCE GEORGE 78/GOOD 19 1691 99/GOOD 19 3612 52/FAIR 9 1773 BURNS LAKE 46/FAIR 10 1335 99/GOOD 20 2493 76/GOOD 13 1941 SMITHERS 42/FAIR 8 1387 94/GOOD 16 2260 66/GOOD 11 1826 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE SW 39 SW 35 SMITHERS W 17 SW 31 NORTHERN BC/YUKON TODAY TOMORROW 7:00 AM 4:00 PM 4:00 PM VI WND MXG HT VI WND MXG HT VI WND MXG HT KM/H M KM/H M KM/H M FORT NELSON 27/POOR 18 575 99/GOOD 26 2151 99/GOOD 22 1879 FT ST JOHN 53/FAIR 34 984 87/GOOD 25 1655 99/GOOD 24 2001 WHITEHORSE 36/FAIR 15 1068 81/GOOD 15 2096 57/GOOD 9 1955 DAWSON 41/FAIR 25 634 71/GOOD 18 1274 23/POOR 2 1664 WATSON LAKE 36/FAIR 18 995 41/FAIR 8 1533 77/GOOD 14 2018 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE W 19 W 22 WATSON LAKE E 31 SE 31 WHITEHORSE SW 13 SW 13 MAYO E 39 E 24 COAST TODAY TOMORROW 7:00 AM 4:00 PM 4:00 PM VI WND MXG HT VI WND MXG HT VI WND MXG HT KM/H M KM/H M KM/H M VANCOUVER 53/FAIR 18 562 59/GOOD 12 986 57/GOOD 9 1238 FRASER VALLEY 60/GOOD 19 703 81/GOOD 14 1550 55/GOOD 9 1242 SRN VAN ISLD 46/FAIR 15 549 63/GOOD 13 1025 62/GOOD 11 1186 CNTRL VAN ISLD 57/GOOD 17 683 58/GOOD 9 1294 59/GOOD 10 1218 NRN VAN ISLD 45/FAIR 17 469 72/GOOD 14 1205 80/GOOD 16 1282 TERRACE 20/POOR 3 877 55/GOOD 7 1706 63/GOOD 10 1531 STEWART 36/FAIR 10 557 60/GOOD 8 1528 56/GOOD 9 1225 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER SW 33 SW 44 SW 41 SANDSPIT SW 31 SW 35 SW 33 PORT HARDY S 24 S 26 S 24 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/GF