FPCN39 CWLW 251330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT WEDNESDAY 25 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. 25-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 61/GOOD 16 1001 81/GOOD 15 1607 59/GOOD 18 877 KAMLOOPS 77/GOOD 20 1284 97/GOOD 17 2089 78/GOOD 25 1122 OKANAGAN 64/GOOD 17 1256 88/GOOD 16 1990 80/GOOD 18 1570 CASTLEGAR 23/POOR 12 725 88/GOOD 15 2114 94/GOOD 18 2036 CRANBROOK 39/FAIR 19 1267 99/GOOD 21 2681 99/GOOD 25 2612 REVELSTOKE 72/GOOD 15 1551 72/GOOD 13 1724 62/GOOD 14 1354 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON SW 9 W 35 W 67 CRANBROOK W 20 W 63 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 44/FAIR 13 1129 78/GOOD 13 2018 76/GOOD 14 1865 100 MILE 74/GOOD 23 1692 99/GOOD 22 2489 90/GOOD 22 2098 WILLIAMS LAKE 28/POOR 20 1123 85/GOOD 15 2440 81/GOOD 14 2432 PUNTZI MTN 13/POOR 15 959 63/GOOD 11 2110 93/GOOD 19 2337 PRINCE GEORGE 43/FAIR 7 1732 83/GOOD 13 2356 66/GOOD 11 1998 BURNS LAKE 56/GOOD 13 1380 85/GOOD 14 2165 44/FAIR 10 1290 SMITHERS 54/GOOD 12 1378 77/GOOD 12 2068 47/FAIR 12 1222 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE SW 48 W 65 SMITHERS SW 39 SW 48 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 98/GOOD 32 1329 99/GOOD 18 2692 64/GOOD 6 2630 FT ST JOHN 99/GOOD 34 2044 99/GOOD 24 2665 51/FAIR 9 1739 WHITEHORSE 84/GOOD 19 1885 94/GOOD 17 2362 91/GOOD 15 2430 DAWSON 37/FAIR 14 780 82/GOOD 13 2013 73/GOOD 6 3184 WATSON LAKE 92/GOOD 24 1812 99/GOOD 18 2702 84/GOOD 12 2538 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE SW 28 SW 48 WATSON LAKE W 43 W 26 WHITEHORSE SW 30 SW 33 MAYO S 17 S 19 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 10/POOR 1 138 11/POOR 1 312 16/POOR 19 72 FRASER VALLEY 20/POOR 4 571 29/POOR 5 837 23/POOR 11 291 SRN VAN ISLD 18/POOR 12 153 13/POOR 3 278 16/POOR 12 123 CNTRL VAN ISLD 19/POOR 12 186 36/FAIR 7 798 45/FAIR 17 473 NRN VAN ISLD 13/POOR 22 57 10/POOR 12 35 43/FAIR 28 279 TERRACE 68/GOOD 14 1295 52/FAIR 10 1184 53/FAIR 13 980 STEWART 53/FAIR 15 673 26/POOR 10 341 23/POOR 15 189 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER SW 15 SW 39 SW 65 SANDSPIT SW 31 SW 50 SW 70 PORT HARDY S 37 SW 39 SW 46 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/