FPCN39 CWLW 201430 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PST THURSDAY 20 DECEMBER 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. 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 16/POOR 16 307 23/POOR 13 441 17/POOR 11 371 KAMLOOPS 15/POOR 17 407 23/POOR 11 591 16/POOR 10 483 OKANAGAN 17/POOR 19 529 25/POOR 14 671 19/POOR 9 667 CASTLEGAR 23/POOR 25 604 26/POOR 16 704 22/POOR 6 892 CRANBROOK 13/POOR 13 992 19/POOR 15 1061 23/POOR 10 1211 REVELSTOKE 22/POOR 20 565 25/POOR 17 619 16/POOR 11 555 GOLDEN 16/POOR 15 866 23/POOR 12 999 8/POOR 1 892 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PENTICTON 0 0 E 22 0 0 CRANBROOK E 28 S 9 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 12/POOR 15 578 14/POOR 7 681 21/POOR 20 660 100 MILE 15/POOR 22 990 22/POOR 12 1143 23/POOR 23 1055 WILLIAMS LAKE 12/POOR 15 979 15/POOR 6 1111 18/POOR 13 1068 PUNTZI MTN 11/POOR 14 931 17/POOR 10 1064 10/POOR 6 939 PRINCE GEORGE 12/POOR 12 736 13/POOR 9 771 19/POOR 16 807 BURNS LAKE 11/POOR 15 734 25/POOR 24 842 11/POOR 10 750 SMITHERS 13/POOR 15 574 11/POOR 22 539 13/POOR 13 573 MCBRIDE 15/POOR 17 794 27/POOR 15 962 16/POOR 19 795 CLEARWATER 15/POOR 21 450 29/POOR 18 615 18/POOR 16 495 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m PR. GEORGE W 28 W 28 SMITHERS SW 31 SW 19 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 10/POOR 11 391 9/POOR 8 386 9/POOR 8 385 FT ST JOHN 11/POOR 19 711 11/POOR 7 742 13/POOR 18 733 WHITEHORSE 15/POOR 27 743 15/POOR 36 732 10/POOR 32 708 DAWSON 17/POOR 32 632 16/POOR 43 498 11/POOR 36 382 WATSON LAKE 10/POOR 10 699 9/POOR 10 693 9/POOR 12 694 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m DEASE LAKE SW 46 SW 56 WATSON LAKE W 63 W 43 WHITEHORSE SW 61 SW 63 MAYO S 41 SW 39 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 26/POOR 41 134 17/POOR 17 86 23/POOR 14 186 FRASER VALLEY 25/POOR 29 162 16/POOR 17 139 16/POOR 6 259 SQUAMISH 24/POOR 27 157 23/POOR 21 176 20/POOR 13 214 SRN VAN ISLD 32/POOR 26 191 29/POOR 19 231 13/POOR 5 167 CNTRL VAN ISLD 17/POOR 21 90 27/POOR 17 224 20/POOR 9 255 NRN VAN ISLD 11/POOR 15 52 13/POOR 12 86 12/POOR 29 41 TERRACE 14/POOR 9 309 14/POOR 18 265 11/POOR 12 254 STEWART 11/POOR 16 27 13/POOR 22 40 12/POOR 13 54 FORECAST UPPER WINDS FOR THIS AFTERNOON 900m 1800m 2700m VANCOUVER NE 13 NE 13 NW 11 SANDSPIT NE 9 NE 9 W 11 PORT HARDY S 28 S 24 W 22 VENTILATION GUIDELINES: POOR: 0-33 FAIR: 34-54 GOOD: 55-100 VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET. END/MWSO