FPCN39 CWLW 231330 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PDT MONDAY 23 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. 23-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 54/GOOD 18 804 72/GOOD 20 1064 78/GOOD 22 1100 KAMLOOPS 64/GOOD 16 1183 95/GOOD 25 1488 99/GOOD 28 1692 OKANAGAN 61/GOOD 15 1295 90/GOOD 21 1682 99/GOOD 26 1797 CASTLEGAR 43/FAIR 10 1226 48/FAIR 13 1155 99/GOOD 20 2047 CRANBROOK 38/FAIR 17 1295 69/GOOD 19 1752 99/GOOD 27 2111 REVELSTOKE 41/FAIR 12 996 30/POOR 12 788 60/GOOD 15 1249 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON SW 9 W 24 W 48 CRANBROOK W 13 W 39 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 42/FAIR 20 894 91/GOOD 20 1840 99/GOOD 31 2347 100 MILE 64/GOOD 22 1561 99/GOOD 28 2201 99/GOOD 33 2563 WILLIAMS LAKE 38/FAIR 20 1243 92/GOOD 21 2219 99/GOOD 28 2803 PUNTZI MTN 22/POOR 20 1036 99/GOOD 29 2216 99/GOOD 35 2525 PRINCE GEORGE 56/GOOD 22 1183 99/GOOD 20 2532 99/GOOD 35 2666 BURNS LAKE 73/GOOD 18 1485 87/GOOD 23 1582 99/GOOD 35 1974 SMITHERS 66/GOOD 17 1367 63/GOOD 21 1142 96/GOOD 28 1559 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE SW 41 SW 33 SMITHERS SW 48 SW 65 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 16/POOR 10 502 99/GOOD 16 3020 99/GOOD 34 3293 FT ST JOHN 30/POOR 24 869 99/GOOD 27 2871 99/GOOD 39 3136 WHITEHORSE 35/FAIR 11 1171 97/GOOD 16 2550 78/GOOD 11 2450 DAWSON 23/POOR 22 487 66/GOOD 13 1458 60/GOOD 12 1377 WATSON LAKE 19/POOR 14 818 99/GOOD 14 3012 99/GOOD 24 2754 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE S 30 S 50 WATSON LAKE S 31 S 35 WHITEHORSE SE 19 SE 26 MAYO SE 20 SE 15 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 50/FAIR 28 324 43/FAIR 30 239 24/POOR 13 228 FRASER VALLEY 52/FAIR 21 521 48/FAIR 20 485 57/GOOD 13 910 SRN VAN ISLD 24/POOR 18 179 31/POOR 20 239 21/POOR 15 166 CNTRL VAN ISLD 36/FAIR 17 344 67/GOOD 21 718 20/POOR 17 141 NRN VAN ISLD 27/POOR 23 178 70/GOOD 32 518 35/FAIR 15 374 TERRACE 45/FAIR 18 641 46/FAIR 24 552 49/FAIR 21 630 STEWART 32/POOR 19 249 18/POOR 23 82 18/POOR 19 94 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER SW 33 SW 41 SW 44 SANDSPIT S 41 S 48 SW 54 PORT HARDY S 65 S 69 SW 70 VENTILLATION GUIDLINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/