FPCN39 CWLW 211330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT TUESDAY 21 AUGUST 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. 21-August-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 83/GOOD 40 769 96/GOOD 50 807 68/GOOD 18 1057 KAMLOOPS 52/FAIR 15 989 83/GOOD 22 1321 94/GOOD 21 1684 OKANAGAN 41/FAIR 10 1121 98/GOOD 17 2241 99/GOOD 19 2138 CASTLEGAR 15/POOR 3 871 99/GOOD 17 2678 49/FAIR 14 1133 CRANBROOK 40/FAIR 14 1399 99/GOOD 22 3111 73/GOOD 15 2067 REVELSTOKE 42/FAIR 9 1215 59/GOOD 7 2142 74/GOOD 13 1777 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 SW 24 SW 35 CRANBROOK SW 33 SW 50 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 68/GOOD 26 1117 96/GOOD 34 1406 99/GOOD 27 1764 100 MILE 71/GOOD 24 1612 98/GOOD 33 1854 99/GOOD 30 2180 WILLIAMS LAKE 73/GOOD 24 1649 99/GOOD 32 1983 99/GOOD 26 2148 PUNTZI MTN 82/GOOD 23 1831 99/GOOD 31 2472 99/GOOD 21 3002 PRINCE GEORGE 53/FAIR 25 1084 65/GOOD 30 1158 99/GOOD 25 2288 BURNS LAKE 68/GOOD 29 1056 46/FAIR 21 928 99/GOOD 21 2304 SMITHERS 58/GOOD 26 969 42/FAIR 18 906 92/GOOD 16 2190 MCBRIDE 46/FAIR 12 1398 64/GOOD 17 1515 83/GOOD 15 2178 CLEARWATER 43/FAIR 14 919 50/FAIR 18 896 70/GOOD 15 1456 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE SW 46 SW 35 SMITHERS S 56 S 61 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 44/FAIR 16 851 58/GOOD 12 1347 60/GOOD 25 868 FT ST JOHN 14/POOR 13 767 86/GOOD 16 2163 99/GOOD 16 2743 WHITEHORSE 55/GOOD 27 1092 62/GOOD 24 1235 89/GOOD 21 1888 DAWSON 56/GOOD 15 1085 99/GOOD 15 2921 95/GOOD 12 2750 WATSON LAKE 90/GOOD 35 1426 99/GOOD 31 1829 92/GOOD 32 1522 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE SE 56 SE 56 WATSON LAKE SE 44 SE 33 WHITEHORSE E 43 E 44 MAYO E 13 E 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 42/FAIR 27 261 44/FAIR 30 247 68/GOOD 30 502 FRASER VALLEY 30/POOR 26 215 23/POOR 33 140 67/GOOD 22 716 SRN VAN ISLD 35/FAIR 21 266 33/FAIR 38 148 61/GOOD 25 519 CNTRL VAN ISLD 48/FAIR 28 327 32/POOR 31 174 62/GOOD 19 697 NRN VAN ISLD 22/POOR 38 86 44/FAIR 24 332 64/GOOD 30 471 TERRACE 49/FAIR 24 581 67/GOOD 17 1070 73/GOOD 13 1535 STEWART 42/FAIR 23 305 40/FAIR 16 414 57/GOOD 14 807 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER S 43 SW 54 SW 52 SANDSPIT S 70 S 65 SW 72 PORT HARDY SW 37 S 37 S 41 VENTILATION GUIDELINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/DSL