FPCN39 CWLW 041431 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF ENVIRONMENT CANADA AT 7:00 AM PST THURSDAY 4 JANUARY 2001 FOR TODAY. VENTILATION INDICES AND MIXING HEIGHTS. MIXING HEIGHTS IN METRES ABOVE SEA LEVEL. AVERAGE WINDS IN KM/HR. SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS. SOUTHERN INTERIOR *** TODAY *** *** TOMORROW *** ****** 7:00 AM **** **** 4:00 PM ***** ***** 4:00 PM ***** VI MXG HT Wnd VI MXG HT Wnd VI MXG HT Wnd (m) (km/h) (m) (km/h) (m) (km/h) FRSR CANYON 25/POOR 401 13 44/FAIR 285 26 60/GOOD 302 32 KAMLOOPS 14/POOR 385 19 44/FAIR 470 25 60/GOOD 536 38 OKANAGAN 24/POOR 567 17 44/FAIR 471 33 60/GOOD 451 36 CASTLEGAR 16/POOR 654 9 19/POOR 611 16 60/GOOD 522 24 CRANBROOK 23/POOR 1083 18 57/GOOD 1408 16 60/GOOD 1119 30 REVELSTOKE 25/POOR 667 13 44/FAIR 667 17 60/GOOD 483 25 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON S 11 SW 35 SW 91 CRANBROOK W 19 W 69 CENTRAL INTERIOR *** TODAY *** *** TOMORROW *** ****** 7:00 AM **** **** 4:00 PM ***** ***** 4:00 PM ***** VI MXG HT Wnd VI MXG HT Wnd VI MXG HT Wnd (m) (km/h) (m) (km/h) (m) (km/h) QUESNEL 22/POOR 646 24 57/GOOD 655 38 14/POOR 566 32 100 MILE 15/POOR 985 15 57/GOOD 1117 37 27/POOR 1024 37 WILLIAMS LK 17/POOR 1014 18 57/GOOD 1094 35 14/POOR 967 35 PUNTZI MNT 14/POOR 950 12 57/GOOD 986 25 100/GOOD 1305 42 PR. GEORGE 33/POOR 860 25 57/GOOD 716 27 13/POOR 705 34 BURNS LAKE 16/POOR 768 21 57/GOOD 771 31 18/POOR 765 33 SMITHERS 12/POOR 536 14 57/GOOD 533 28 13/POOR 551 31 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE S 57 SW 61 SMITHERS S 52 S 104 NORTHERN BC/YUKON *** TODAY *** *** TOMORROW *** ****** 7:00 AM **** **** 4:00 PM ***** ***** 4:00 PM ***** VI MXG HT Wnd VI MXG HT Wnd VI MXG HT Wnd (m) (km/h) (m) (km/h) (m) (km/h) FT NLSN 13/POOR 403 34 12/POOR 389 24 12/POOR 399 18 FT STJOHN 88/GOOD 718 41 32/FAIR 717 19 13/POOR 709 34 WHITEHORSE 13/POOR 736 32 14/POOR 731 14 13/POOR 727 17 DAWSON 14/POOR 415 13 13/POOR 408 11 13/POOR 397 8 WATSON LAKE 13/POOR 708 37 14/POOR 711 16 12/POOR 700 18 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE SE 20 SE 28 WATSON LAKE W 20 W 24 WHITEHORSE SW 17 SW 22 MAYO W 30 W 28 COAST *** TODAY *** *** TOMORROW *** ****** 7:00 AM **** **** 4:00 PM ***** ***** 4:00 PM ***** VI MXG HT Wnd VI MXG HT Wnd VI MXG HT Wnd (m) (km/h) (m) (km/h) (m) (km/h) VANCOUVER 53/FAIR 208 23 72/GOOD 16 42 15/POOR 31 44 FRASER VLY 30/POOR 216 19 72/GOOD 79 36 23/POOR 150 36 SRN VRISL 25/POOR 162 14 72/GOOD 31 29 23/POOR 76 44 CNTRL VRISL 32/POOR 165 20 72/GOOD 51 27 13/POOR 40 41 NRN VRISL 72/GOOD 336 32 72/GOOD 51 37 14/POOR 37 41 TERRACE 17/POOR 285 16 72/GOOD 229 22 12/POOR 234 24 STEWART 39/FAIR 199 22 72/GOOD 44 28 13/POOR 50 24 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER S 51 SW 81 SW107 SANDSPIT SW 74 S 80 S 87 PORT HARDY S 70 S 100 SW119 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/