FPCN39 CWLW 311330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT TUESDAY 31 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. 31-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 37/FAIR 9 879 73/GOOD 11 1782 59/GOOD 16 975 KAMLOOPS 33/POOR 14 689 80/GOOD 11 2159 81/GOOD 18 1497 OKANAGAN 41/FAIR 16 881 75/GOOD 9 2442 96/GOOD 19 1984 CASTLEGAR 37/FAIR 15 876 78/GOOD 11 2223 91/GOOD 16 2136 CRANBROOK 32/POOR 10 1388 85/GOOD 14 2565 99/GOOD 23 2948 REVELSTOKE 13/POOR 7 556 62/GOOD 8 2048 91/GOOD 15 2192 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 NW 19 SW 9 CRANBROOK N 20 N 15 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 11/POOR 10 587 46/FAIR 6 1879 83/GOOD 21 1577 100 MILE 20/POOR 7 1245 49/FAIR 6 2409 91/GOOD 24 2042 WILLIAMS LAKE 10/POOR 2 993 52/FAIR 6 2570 81/GOOD 18 2102 PUNTZI MTN 35/FAIR 12 1353 78/GOOD 11 2638 66/GOOD 13 2013 PRINCE GEORGE 18/POOR 15 797 72/GOOD 10 2363 85/GOOD 22 1715 BURNS LAKE 40/FAIR 17 918 68/GOOD 11 1896 33/POOR 13 914 SMITHERS 35/FAIR 13 935 62/GOOD 10 1803 24/POOR 8 870 MCBRIDE 11/POOR 6 783 50/FAIR 6 2241 93/GOOD 16 2435 CLEARWATER 13/POOR 10 466 31/POOR 4 1497 84/GOOD 16 1775 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE W 19 W 13 SMITHERS SW 24 W 20 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 20/POOR 20 489 37/FAIR 4 1811 37/FAIR 4 1841 FT ST JOHN 28/POOR 20 882 79/GOOD 10 2668 68/GOOD 8 2555 WHITEHORSE 38/FAIR 13 1159 65/GOOD 10 2102 40/FAIR 7 1609 DAWSON 25/POOR 6 893 43/FAIR 8 1260 98/GOOD 16 2282 WATSON LAKE 34/FAIR 20 944 59/GOOD 7 2390 39/FAIR 4 2243 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE W 19 W 30 WATSON LAKE W 19 SW 15 WHITEHORSE SW 28 SW 19 MAYO W 17 W 30 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 33/POOR 12 402 36/FAIR 12 455 22/POOR 12 215 FRASER VALLEY 39/FAIR 14 500 55/GOOD 12 935 35/FAIR 9 639 SRN VAN ISLD 34/FAIR 18 299 30/POOR 12 367 20/POOR 7 319 CNTRL VAN ISLD 21/POOR 9 270 50/FAIR 10 944 36/FAIR 13 439 NRN VAN ISLD 25/POOR 10 326 60/GOOD 14 885 18/POOR 26 89 TERRACE 23/POOR 10 478 60/GOOD 11 1323 24/POOR 9 545 STEWART 22/POOR 5 484 32/POOR 7 674 19/POOR 8 229 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER S 11 0 0 W 9 SANDSPIT 0 0 NW 11 NW 20 PORT HARDY S 19 W 19 W 24 VENTILATION GUIDELINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/PJS