FPCN39 CWLW 041450 AAA REVISED SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7.49 AM PDT FRIDAY 4 MAY 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. 04-May-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 36/FAIR 17 552 60/GOOD 20 840 98/GOOD 13 2551 KAMLOOPS 38/FAIR 13 811 80/GOOD 25 1152 99/GOOD 21 2860 OKANAGAN 28/POOR 15 706 81/GOOD 26 1260 93/GOOD 20 1826 CASTLEGAR 12/POOR 5 612 69/GOOD 18 1352 89/GOOD 17 1965 CRANBROOK 24/POOR 13 1162 93/GOOD 21 2254 99/GOOD 29 2516 REVELSTOKE 32/POOR 9 956 79/GOOD 14 1843 90/GOOD 16 2047 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 SW 33 SW 35 CRANBROOK SW 31 W 41 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 43/FAIR 14 1057 99/GOOD 7 5445 99/GOOD 24 3323 100 MILE 48/FAIR 16 1467 99/GOOD 27 5840 99/GOOD 27 3374 WILLIAMS LAKE 44/FAIR 14 1473 99/GOOD 18 5840 99/GOOD 22 3666 PUNTZI MTN 21/POOR 16 1057 99/GOOD 13 5810 99/GOOD 26 3264 PRINCE GEORGE 57/GOOD 19 1285 99/GOOD 8 5591 99/GOOD 27 3441 BURNS LAKE 71/GOOD 17 1501 99/GOOD 11 5445 99/GOOD 25 2798 SMITHERS 63/GOOD 13 1532 99/GOOD 10 5423 99/GOOD 19 2385 MCBRIDE 31/POOR 13 1063 99/GOOD 11 5630 80/GOOD 16 2000 CLEARWATER 38/FAIR 13 855 99/GOOD 19 5296 99/GOOD 21 2387 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE SW 41 SW 50 SMITHERS SW 54 SW 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 28 648 99/GOOD 11 3250 99/GOOD 23 3503 FT ST JOHN 79/GOOD 26 1456 99/GOOD 14 2915 99/GOOD 25 3833 WHITEHORSE 78/GOOD 17 1833 99/GOOD 22 2868 99/GOOD 26 2883 DAWSON 10/POOR 2 423 74/GOOD 7 2880 99/GOOD 17 3299 WATSON LAKE 64/GOOD 22 1296 99/GOOD 14 3018 99/GOOD 26 3196 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE SW 46 SW 52 WATSON LAKE W 50 W 44 WHITEHORSE SW 43 SW 48 MAYO SW 30 S 20 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 30/POOR 16 261 99/GOOD 28 1502 96/GOOD 31 937 FRASER VALLEY 26/POOR 10 377 99/GOOD 28 1558 99/GOOD 24 1616 SRN VAN ISLD 12/POOR 5 116 99/GOOD 21 1519 79/GOOD 18 1109 CNTRL VAN ISLD 31/POOR 14 339 99/GOOD 21 1524 92/GOOD 18 1520 NRN VAN ISLD 56/GOOD 21 542 99/GOOD 14 3322 94/GOOD 20 1425 TERRACE 49/FAIR 16 769 97/GOOD 9 3517 70/GOOD 11 1649 STEWART 32/POOR 13 367 99/GOOD 10 3307 39/FAIR 11 572 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER SW 15 SW 33 SW 43 SANDSPIT SW 31 SW 44 SW 56 PORT HARDY SW 33 SW 35 SW 37 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/