FPCN39 CWLW 201331 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT FRIDAY 20 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. 20-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 24/POOR 16 412 71/GOOD 8 2227 62/GOOD 11 1387 KAMLOOPS 43/FAIR 17 765 99/GOOD 12 3337 67/GOOD 10 1793 OKANAGAN 26/POOR 16 662 99/GOOD 12 3232 96/GOOD 15 2408 CASTLEGAR 39/FAIR 25 747 99/GOOD 13 3028 71/GOOD 7 2826 CRANBROOK 32/POOR 22 1148 99/GOOD 18 2714 62/GOOD 5 3486 REVELSTOKE 41/FAIR 20 772 87/GOOD 11 2587 57/GOOD 7 2030 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 E 15 E 22 CRANBROOK 0 0 E 20 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 47/FAIR 20 955 99/GOOD 16 3073 86/GOOD 8 3449 100 MILE 50/FAIR 20 1394 99/GOOD 11 4062 73/GOOD 10 2654 WILLIAMS LAKE 39/FAIR 17 1300 99/GOOD 14 4020 93/GOOD 10 3667 PUNTZI MTN 37/FAIR 21 1185 72/GOOD 8 2985 89/GOOD 12 3000 PRINCE GEORGE 85/GOOD 23 1692 99/GOOD 16 2736 60/GOOD 4 3759 BURNS LAKE 86/GOOD 24 1506 90/GOOD 13 2502 79/GOOD 10 2529 SMITHERS 79/GOOD 22 1408 74/GOOD 10 2281 64/GOOD 9 2030 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE E 30 N 17 SMITHERS E 31 0 0 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 57/GOOD 9 1622 68/GOOD 8 2269 73/GOOD 8 2506 FT ST JOHN 80/GOOD 18 1819 79/GOOD 10 2650 71/GOOD 7 3005 WHITEHORSE 36/FAIR 8 1393 68/GOOD 8 2557 82/GOOD 12 2454 DAWSON 16/POOR 7 548 58/GOOD 7 2028 77/GOOD 15 1624 WATSON LAKE 32/POOR 5 1601 63/GOOD 9 2157 75/GOOD 10 2497 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE SE 9 0 0 WATSON LAKE SE 19 0 0 WHITEHORSE W 9 0 0 MAYO NW 11 W 13 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 16/POOR 11 125 75/GOOD 22 804 61/GOOD 10 1260 FRASER VALLEY 18/POOR 13 192 90/GOOD 13 2003 75/GOOD 13 1442 SRN VAN ISLD 22/POOR 17 158 68/GOOD 13 1165 55/GOOD 20 541 CNTRL VAN ISLD 24/POOR 17 198 78/GOOD 14 1381 70/GOOD 10 1587 NRN VAN ISLD 19/POOR 10 203 69/GOOD 19 837 68/GOOD 13 1170 TERRACE 47/FAIR 21 613 65/GOOD 10 1589 57/GOOD 9 1475 STEWART 20/POOR 9 229 61/GOOD 14 879 51/FAIR 11 675 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER NE 19 E 13 E 15 SANDSPIT N 11 E 17 E 24 PORT HARDY N 22 E 9 SE 13 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/