FPCN39 CWLW 181500 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PST SATURDAY 18 DECEMBER 1999 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 61/GOOD 626 22 80/GOOD 267 15 35/FAIR 407 23 KAMLOOPS 100/GOOD 1575 31 100/GOOD 479 29 14/POOR 384 26 OKANAGAN 100/GOOD 1675 29 100/GOOD 641 26 16/POOR 481 24 CASTLEGAR 100/GOOD 1766 22 100/GOOD 666 27 28/POOR 723 11 CRANBROOK 100/GOOD 2379 30 100/GOOD 1365 30 40/FAIR 1185 18 REVELSTOKE 100/GOOD 1985 20 100/GOOD 781 22 22/POOR 632 12 FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON SE 12 S 35 S 91 CRANBROOK SW 17 SW 50 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 100/GOOD 1278 33 100/GOOD 1216 21 13/POOR 579 14 100 MILE 100/GOOD 1994 37 86/GOOD 1265 31 13/POOR 965 19 WILLIAMS LK 100/GOOD 1911 31 95/GOOD 1315 24 13/POOR 964 19 PUNTZI MNT 20/POOR 1024 36 100/GOOD 1038 15 100/GOOD 1598 40 PR. GEORGE 28/POOR 850 32 100/GOOD 1247 18 14/POOR 731 26 BURNS LAKE 18/POOR 772 30 74/GOOD 1042 10 100/GOOD 1214 35 SMITHERS 20/POOR 624 27 100/GOOD 1063 9 100/GOOD 1149 33 FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE S 35 SW 22 SMITHERS SW 35 SW 48 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 12/POOR 401 20 39/FAIR 630 3 14/POOR 419 19 FT STJOHN 19/POOR 762 32 43/FAIR 887 20 16/POOR 758 22 WHITEHORSE 14/POOR 748 15 19/POOR 783 28 13/POOR 723 35 DAWSON 16/POOR 428 12 30/POOR 483 38 14/POOR 392 34 WATSON LAKE 12/POOR 706 36 13/POOR 708 7 12/POOR 713 12 FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE SW 20 W 35 WATSON LAKE W 33 W 48 WHITEHORSE W 30 W 46 MAYO N 15 NW 19 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 100/GOOD 569 51 100/GOOD 364 32 22/POOR 135 19 FRASER VLY 34/FAIR 283 30 100/GOOD 363 16 20/POOR 190 18 SRN VRISL 95/GOOD 528 33 100/GOOD 286 21 18/POOR 79 21 CNTRL VRISL 85/GOOD 358 34 100/GOOD 52 25 17/POOR 146 2 NRN VRISL 100/GOOD 775 44 100/GOOD 550 9 21/POOR 174 7 TERRACE 12/POOR 237 17 100/GOOD 500 10 73/GOOD 612 20 STEWART 12/POOR 32 24 100/GOOD 97 15 70/GOOD 262 25 FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER S 50 S 65 SW 78 SANDSPIT NW 33 W 28 W 37 PORT HARDY SE 22 S 13 W 11 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/ $$$$^^