FPCN39 CWLW 251400 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PDT TUESDAY 25 APRIL 2000 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 100/GOOD 1077 14 100/GOOD 1030 20 100/GOOD 1209 11 KAMLOOPS 100/GOOD 1159 18 100/GOOD 1753 21 100/GOOD 1976 14 OKANAGAN 100/GOOD 1422 16 100/GOOD 2121 19 100/GOOD 2161 9 CASTLEGAR 100/GOOD 1405 14 100/GOOD 1725 14 94/GOOD 1447 10 CRANBROOK 37/FAIR 1443 5 100/GOOD 2216 16 100/GOOD 2715 11 REVELSTOKE 31/POOR 683 14 100/GOOD 1830 8 71/GOOD 1252 7 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 W 22 W 26 CRANBROOK SW 9 SW 24 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 49/FAIR 800 24 100/GOOD 2455 24 100/GOOD 3647 16 100 MILE 100/GOOD 1452 26 100/GOOD 2510 26 100/GOOD 2842 15 WILLIAMS LK 68/GOOD 1273 25 100/GOOD 2745 25 100/GOOD 2879 14 PUNTZI MNT 72/GOOD 1262 25 100/GOOD 2672 26 100/GOOD 3386 15 PR. GEORGE 29/POOR 850 21 100/GOOD 3391 21 100/GOOD 3599 11 BURNS LAKE 78/GOOD 1042 31 100/GOOD 2832 29 100/GOOD 2737 20 SMITHERS 100/GOOD 981 26 100/GOOD 2578 28 100/GOOD 2235 18 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE W 33 W 35 SMITHERS SW 31 SW 28 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 40/FAIR 623 21 100/GOOD 1782 10 100/GOOD 2890 10 FT STJOHN 40/FAIR 1016 16 100/GOOD 3274 7 100/GOOD 3211 23 WHITEHORSE 57/GOOD 1113 16 100/GOOD 2807 14 100/GOOD 1977 15 DAWSON 47/FAIR 684 18 100/GOOD 2925 7 100/GOOD 2842 15 WATSON LAKE 26/POOR 863 17 100/GOOD 3266 7 100/GOOD 2677 21 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE SW 28 SW 30 WATSON LAKE S 26 SE 30 WHITEHORSE S 19 SE 24 MAYO S 20 SE 20 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 772 40 100/GOOD 260 34 39/FAIR 482 5 FRASER VLY 100/GOOD 658 22 100/GOOD 716 27 62/GOOD 964 7 SRN VRISL 100/GOOD 837 37 100/GOOD 226 34 21/POOR 436 2 CNTRL VRISL 100/GOOD 779 33 100/GOOD 731 34 37/FAIR 843 5 NRN VRISL 100/GOOD 471 45 100/GOOD 577 37 83/GOOD 925 8 TERRACE 100/GOOD 791 23 100/GOOD 1706 20 100/GOOD 1046 16 STEWART 53/FAIR 284 24 100/GOOD 293 24 46/FAIR 211 18 FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER W 12 W 15 W 24 SANDSPIT S 37 S 43 S 44 PORT HARDY S 22 SW 20 SW 22 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/ $$$$^^