FPCN39 CWLW 211500 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PST TUESDAY 21 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 21/POOR 324 21 25/POOR 472 11 18/POOR 384 9 KAMLOOPS 12/POOR 368 21 41/FAIR 732 13 17/POOR 523 6 OKANAGAN 14/POOR 481 21 33/POOR 811 11 24/POOR 697 9 CASTLEGAR 15/POOR 550 20 53/FAIR 1004 16 24/POOR 718 11 CRANBROOK 14/POOR 985 26 38/FAIR 1255 19 18/POOR 1061 9 REVELSTOKE 12/POOR 469 18 33/POOR 761 11 20/POOR 653 11 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON NW 9. NW 41 NW 72 CRANBROOK NW 30 NW 96 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 13/POOR 572 25 16/POOR 658 8 17/POOR 660 20 100 MILE 12/POOR 960 24 29/POOR 1166 9 15/POOR 1101 8 WILLIAMS LK 12/POOR 956 21 19/POOR 1123 3 15/POOR 1069 10 PUNTZI MNT 14/POOR 948 23 14/POOR 973 20 13/POOR 1010 6 PR. GEORGE 15/POOR 747 26 27/POOR 922 11 17/POOR 827 14 BURNS LAKE 14/POOR 754 25 13/POOR 745 18 13/POOR 767 12 SMITHERS 14/POOR 563 22 16/POOR 619 19 13/POOR 573 13 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE NW 67 NW 93 SMITHERS W 54 NW 76 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 395 25 12/POOR 388 28 13/POOR 393 18 FT STJOHN 15/POOR 733 34 14/POOR 718 41 13/POOR 706 40 WHITEHORSE 15/POOR 728 39 13/POOR 711 46 13/POOR 714 53 DAWSON 26/POOR 484 27 13/POOR 384 28 12/POOR 376 37 WATSON LAKE 14/POOR 710 37 12/POOR 699 32 12/POOR 696 31 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE W 52 W 89 WATSON LAKE W 69 W 87 WHITEHORSE SW 65 W 100 MAYO SW 43 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 15/POOR 183 2 15/POOR 58 12 13/POOR 27 17 FRASER VLY 15/POOR 134 9 18/POOR 171 18 13/POOR 108 20 SRN VRISL 17/POOR 258 3 19/POOR 113 17 18/POOR 93 13 CNTRL VRISL 13/POOR 131 7 17/POOR 184 8 15/POOR 129 10 NRN VRISL 14/POOR 72 12 14/POOR 75 11 13/POOR 42 21 TERRACE 17/POOR 355 10 16/POOR 342 11 13/POOR 262 16 STEWART 20/POOR 147 16 13/POOR 45 18 12/POOR 39 20 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER NW 24 NW 63 NW 67 SANDSPIT W 22 W 28 W 41 PORT HARDY W 18 NW 44 NW 56 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/TCS $$$$^^