FPCN39 CWLW 231500 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PST THURSDAY 23 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 12/POOR 255 10 14/POOR 309 18 12/POOR 269 20 KAMLOOPS 16/POOR 441 11 18/POOR 528 12 13/POOR 441 4 OKANAGAN 12/POOR 458 11 15/POOR 527 18 15/POOR 502 20 CASTLEGAR 13/POOR 536 6 13/POOR 611 3 16/POOR 721 5 CRANBROOK 13/POOR 979 13 14/POOR 1044 6 16/POOR 1080 6 REVELSTOKE 13/POOR 478 3 13/POOR 525 11 16/POOR 570 12 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 N 28 N 31 CRANBROOK NW 9 N 39 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 30/POOR 702 25 24/POOR 681 28 19/POOR 638 26 100 MILE 29/POOR 1095 26 24/POOR 1088 26 16/POOR 1012 17 WILLIAMS LK 27/POOR 1076 19 27/POOR 1144 23 18/POOR 1047 18 PUNTZI MNT 12/POOR 930 4 14/POOR 983 10 15/POOR 991 24 PR. GEORGE 13/POOR 714 20 25/POOR 863 24 16/POOR 746 29 BURNS LAKE 14/POOR 767 11 14/POOR 768 22 14/POOR 751 28 SMITHERS 15/POOR 579 18 16/POOR 612 22 14/POOR 558 27 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE NW 19 NW 28 SMITHERS SW 19 SW 24 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 394 14 12/POOR 390 23 12/POOR 387 32 FT STJOHN 14/POOR 718 38 13/POOR 708 34 14/POOR 714 41 WHITEHORSE 13/POOR 718 40 32/POOR 707 54 20/POOR 754 21 DAWSON 12/POOR 381 28 12/POOR 375 20 66/GOOD 694 21 WATSON LAKE 12/POOR 700 21 12/POOR 694 26 13/POOR 702 36 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE SW 50 SW 69 WATSON LAKE SW 61 SW 74 WHITEHORSE S 81 SW131 MAYO S 80 SW 98 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 16/POOR 49 25 12/POOR 19 14 12/POOR 12 7 FRASER VLY 15/POOR 107 15 13/POOR 94 10 12/POOR 74 7 SRN VRISL 15/POOR 68 13 13/POOR 64 9 13/POOR 53 8 CNTRL VRISL 14/POOR 63 18 15/POOR 133 11 12/POOR 77 1 NRN VRISL 15/POOR 58 35 13/POOR 39 35 12/POOR 31 27 TERRACE 12/POOR 242 22 12/POOR 240 26 12/POOR 232 22 STEWART 13/POOR 47 19 13/POOR 36 24 12/POOR 25 24 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER E 25 0 0 0 0 SANDSPIT S 44 S 44 S 48 PORT HARDY S 29 S 17 S 17 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/MWSO $$$$^^