FPCN39 CWLW 311500 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PST FRIDAY 31 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 19/POOR 361 15 29/POOR 497 13 54/FAIR 698 16 KAMLOOPS 13/POOR 398 12 19/POOR 568 7 29/POOR 530 7 OKANAGAN 21/POOR 572 12 25/POOR 654 13 65/GOOD 790 16 CASTLEGAR 18/POOR 739 5 19/POOR 836 5 51/FAIR 978 14 CRANBROOK 21/POOR 1115 13 25/POOR 1456 8 42/FAIR 1600 8 REVELSTOKE 23/POOR 712 6 24/POOR 822 8 45/FAIR 1047 12 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 W 22 W 50 CRANBROOK W 17 W 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 12/POOR 567 10 16/POOR 744 6 52/FAIR 847 21 100 MILE 13/POOR 981 5 16/POOR 1140 7 27/POOR 1101 17 WILLIAMS LK 12/POOR 958 3 15/POOR 1128 7 36/FAIR 1180 17 PUNTZI MNT 12/POOR 935 3 55/GOOD 1348 15 100/GOOD 1601 27 PR. GEORGE 13/POOR 738 13 17/POOR 865 8 52/FAIR 1001 24 BURNS LAKE 16/POOR 780 19 27/POOR 933 15 15/POOR 824 7 SMITHERS 13/POOR 563 16 22/POOR 713 14 18/POOR 690 10 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE W 35 W 52 SMITHERS W 37 W 50 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 400 5 14/POOR 452 5 43/FAIR 795 11 FT STJOHN 33/POOR 1191 10 21/POOR 1151 2 29/POOR 1172 17 WHITEHORSE 34/FAIR 986 16 26/POOR 918 12 35/FAIR 1018 21 DAWSON 12/POOR 377 22 12/POOR 371 24 12/POOR 372 9 WATSON LAKE 37/FAIR 1133 11 26/POOR 1084 5 77/GOOD 1284 20 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE W 20 W 37 WATSON LAKE NW 28 W 65 WHITEHORSE SW 13 W 54 MAYO 0 0 W 24 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 40/FAIR 290 19 16/POOR 87 6 79/GOOD 334 31 FRASER VLY 19/POOR 182 9 12/POOR 77 7 62/GOOD 369 22 SRN VRISL 43/FAIR 402 13 27/POOR 170 16 58/GOOD 260 28 CNTRL VRISL 43/FAIR 352 16 25/POOR 240 19 56/GOOD 514 28 NRN VRISL 47/FAIR 344 4 25/POOR 161 18 40/FAIR 237 28 TERRACE 13/POOR 273 13 15/POOR 307 15 21/POOR 393 15 STEWART 23/POOR 195 12 14/POOR 69 15 14/POOR 82 13 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER SW 9. W 22 W 50 SANDSPIT W 12 W 30 W 50 PORT HARDY S 31 SW 37 W 46 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/WJW $$$$^^