FPCN39 CWLW 191330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT THURSDAY 19 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. 19-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 24/POOR 14 427 57/GOOD 5 2483 73/GOOD 10 1916 KAMLOOPS 64/GOOD 18 1098 75/GOOD 7 2904 99/GOOD 18 3051 OKANAGAN 56/GOOD 13 1289 65/GOOD 6 2760 99/GOOD 15 3187 CASTLEGAR 58/GOOD 14 1309 61/GOOD 5 2957 95/GOOD 10 3357 CRANBROOK 35/FAIR 17 1255 71/GOOD 8 2943 83/GOOD 14 2504 REVELSTOKE 54/GOOD 11 1379 69/GOOD 7 2635 69/GOOD 7 2623 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 NW 11 NW 13 CRANBROOK W 9 W 28 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 74/GOOD 18 1524 98/GOOD 12 3059 99/GOOD 17 3150 100 MILE 67/GOOD 18 1753 86/GOOD 10 3284 99/GOOD 21 3501 WILLIAMS LAKE 50/FAIR 14 1588 77/GOOD 8 3281 99/GOOD 19 3596 PUNTZI MTN 34/FAIR 14 1262 85/GOOD 12 2787 85/GOOD 12 2798 PRINCE GEORGE 78/GOOD 19 1692 87/GOOD 13 2518 99/GOOD 18 3302 BURNS LAKE 59/GOOD 18 1206 81/GOOD 9 2831 81/GOOD 9 2870 SMITHERS 55/GOOD 13 1341 62/GOOD 8 2109 84/GOOD 12 2359 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE NW 31 NW 30 SMITHERS W 9 SW 9 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 87/GOOD 22 1462 98/GOOD 19 1984 69/GOOD 10 1921 FT ST JOHN 97/GOOD 26 1833 99/GOOD 23 2731 88/GOOD 14 2442 WHITEHORSE 29/POOR 12 1033 69/GOOD 12 1994 61/GOOD 10 1935 DAWSON 42/FAIR 17 773 61/GOOD 12 1396 61/GOOD 10 1628 WATSON LAKE 46/FAIR 8 1673 93/GOOD 17 2299 80/GOOD 15 2047 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE NW 15 N 11 WATSON LAKE E 33 E 9 WHITEHORSE W 17 0 0 MAYO NE 15 0 0 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 13/POOR 6 121 38/FAIR 6 987 93/GOOD 30 909 FRASER VALLEY 13/POOR 8 143 48/FAIR 6 1494 95/GOOD 14 2098 SRN VAN ISLD 12/POOR 7 109 43/FAIR 8 908 49/FAIR 16 572 CNTRL VAN ISLD 10/POOR 2 130 44/FAIR 6 1263 86/GOOD 18 1315 NRN VAN ISLD 14/POOR 4 241 50/FAIR 9 1040 77/GOOD 19 1004 TERRACE 22/POOR 4 830 36/FAIR 4 1569 51/FAIR 6 1788 STEWART 15/POOR 5 227 36/FAIR 8 1330 39/FAIR 11 561 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER 0 0 S 11 0 0 SANDSPIT SE 11 SE 19 SE 24 PORT HARDY SE 11 SE 13 SE 19 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/