FPCN39 CWLW 171500 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PST FRIDAY 17 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 20/POOR 345 18 17/POOR 316 19 30/POOR 398 16 KAMLOOPS 14/POOR 384 24 57/GOOD 585 28 100/GOOD 985 28 OKANAGAN 18/POOR 514 17 45/FAIR 687 31 100/GOOD 629 27 CASTLEGAR 12/POOR 523 12 45/FAIR 773 23 100/GOOD 1389 29 CRANBROOK 14/POOR 991 19 26/POOR 1115 16 100/GOOD 1579 32 REVELSTOKE 21/POOR 609 12 31/POOR 683 19 60/GOOD 774 22 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON W 9. W 30 W 56 CRANBROOK W 19 NW 54 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 17/POOR 622 11 20/POOR 622 25 81/GOOD 847 17 100 MILE 18/POOR 1013 22 41/FAIR 1152 32 64/GOOD 1208 28 WILLIAMS LK 18/POOR 1019 14 21/POOR 1046 27 60/GOOD 1038 19 PUNTZI MNT 13/POOR 936 15 20/POOR 1035 24 55/GOOD 957 14 PR. GEORGE 14/POOR 743 12 18/POOR 771 23 100/GOOD 1272 18 BURNS LAKE 14/POOR 775 14 16/POOR 772 21 100/GOOD 1500 20 SMITHERS 24/POOR 641 11 15/POOR 580 18 19/POOR 688 20 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE SW 63 W 81 SMITHERS SW 59 SW 85 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 405 33 13/POOR 402 23 18/POOR 686 7 FT STJOHN 13/POOR 711 23 12/POOR 711 26 36/FAIR 802 29 WHITEHORSE 13/POOR 721 27 12/POOR 713 21 19/POOR 769 27 DAWSON 12/POOR 377 16 12/POOR 380 2 22/POOR 461 26 WATSON LAKE 13/POOR 712 34 12/POOR 702 24 13/POOR 703 15 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE SW 41 W 74 WATSON LAKE W 56 W 67 WHITEHORSE SW 44 SW 70 MAYO SW 30 SW 59 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 22/POOR 106 19 17/POOR 40 54 60/GOOD 164 30 FRASER VLY 21/POOR 155 15 16/POOR 101 38 55/GOOD 299 12 SRN VRISL 23/POOR 154 18 14/POOR 33 39 55/GOOD 37 24 CNTRL VRISL 19/POOR 127 19 14/POOR 54 31 64/GOOD 50 28 NRN VRISL 85/GOOD 378 23 16/POOR 54 35 100/GOOD 616 7 TERRACE 100/GOOD 985 13 20/POOR 342 17 43/FAIR 503 17 STEWART 22/POOR 156 17 12/POOR 39 13 33/POOR 219 19 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER SW 18 W 31 W 54 SANDSPIT W 33 W 50 W 70 PORT HARDY SW 42 SW 48 W 59 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/ $$$$^^