FPCN39 CWLW 251335 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT WEDNESDAY 25 JULY 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. 25-July-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 69/GOOD 10 8621 99/GOOD 40 1922 61/GOOD 9 1603 KAMLOOPS 62/GOOD 18 1061 72/GOOD 20 2199 80/GOOD 5 1642 OKANAGAN 64/GOOD 16 1309 75/GOOD 10 2262 71/GOOD 8 2484 CASTLEGAR 58/GOOD 15 1260 76/GOOD 10 2324 73/GOOD 9 2373 CRANBROOK 61/GOOD 20 1567 94/GOOD 15 2822 95/GOOD 13 3153 REVELSTOKE 46/FAIR 12 1103 77/GOOD 11 2165 84/GOOD 6 1667 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 N 17 NW 28 CRANBROOK NW 31 NW 31 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 35/FAIR 17 859 59/GOOD 7 2250 84/GOOD 5 2030 100 MILE 40/FAIR 16 1336 75/GOOD 10 2729 89/GOOD 5 2680 WILLIAMS LAKE 25/POOR 17 1126 60/GOOD 7 2682 64/GOOD 8 2645 PUNTZI MTN 38/FAIR 8 1644 68/GOOD 2 2769 61/GOOD 3 1652 PRINCE GEORGE 41/FAIR 20 1030 73/GOOD 9 2582 86/GOOD 5 2298 BURNS LAKE 54/GOOD 19 1091 80/GOOD 11 2368 78/GOOD 12 2159 SMITHERS 48/FAIR 14 1137 79/GOOD 12 2153 80/GOOD 13 2087 MCBRIDE 54/GOOD 12 1592 58/GOOD 8 2157 60/GOOD 7 2485 CLEARWATER 51/FAIR 16 979 74/GOOD 10 2135 55/GOOD 6 2156 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE W 19 W 19 SMITHERS NW 20 W 19 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 24/POOR 23 510 65/GOOD 3 1406 69/GOOD 7 2599 FT ST JOHN 51/FAIR 18 1214 63/GOOD 11 1879 67/GOOD 2 2423 WHITEHORSE 62/GOOD 14 1614 93/GOOD 16 2397 80/GOOD 10 1349 DAWSON 61/GOOD 17 1106 99/GOOD 19 2144 99/GOOD 21 2734 WATSON LAKE 51/FAIR 26 1047 99/GOOD 15 2766 88/GOOD 13 2575 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE W 28 W 19 WATSON LAKE NW 35 NW 19 WHITEHORSE W 19 0 0 MAYO 0 0 SE 11 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 15/POOR 4 279 78/GOOD 13 470 69/GOOD 8 499 FRASER VALLEY 13/POOR 7 157 64/GOOD 12 1173 58/GOOD 13 948 SRN VAN ISLD 21/POOR 19 139 68/GOOD 5 372 60/GOOD 13 338 CNTRL VAN ISLD 42/FAIR 21 351 82/GOOD 7 1016 60/GOOD 2 1046 NRN VAN ISLD 57/GOOD 27 435 83/GOOD 30 744 88/GOOD 32 779 TERRACE 34/FAIR 9 783 57/GOOD 7 1799 62/GOOD 9 1631 STEWART 26/POOR 6 542 84/GOOD 8 941 87/GOOD 9 923 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER 0 0 W 15 W 26 SANDSPIT NW 37 NW 33 NW 33 PORT HARDY NW 22 W 22 W 30 VENTILATION GUIDELINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/LEC