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 THURSDAY 25 MAY 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 61/GOOD 764 13 100/GOOD 2305 10 100/GOOD 1291 11 KAMLOOPS 85/GOOD 1139 13 100/GOOD 2571 6 100/GOOD 2378 16 OKANAGAN 74/GOOD 1186 13 100/GOOD 2646 8 100/GOOD 2300 18 CASTLEGAR 39/FAIR 802 14 100/GOOD 2784 12 100/GOOD 1917 12 CRANBROOK 21/POOR 1173 8 100/GOOD 3442 17 100/GOOD 2888 20 REVELSTOKE 22/POOR 705 7 100/GOOD 2471 9 100/GOOD 1826 7 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 0 0 SW 22 CRANBROOK 0 0 NW 15 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 100/GOOD 1357 16 100/GOOD 2995 6 100/GOOD 3244 12 100 MILE 63/GOOD 1401 17 100/GOOD 2921 9 100/GOOD 3119 18 WILLIAMS LK 83/GOOD 1539 18 100/GOOD 3129 7 100/GOOD 3170 14 PUNTZI MNT 75/GOOD 2009 9 100/GOOD 3323 6 100/GOOD 3079 13 PR. GEORGE 51/FAIR 1039 19 100/GOOD 3676 9 100/GOOD 3069 8 BURNS LAKE 94/GOOD 1390 17 100/GOOD 3122 7 100/GOOD 2316 7 SMITHERS 100/GOOD 1477 13 99/GOOD 2524 7 90/GOOD 1861 6 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE W 13 W 28 SMITHERS W 17 W 22 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 66/GOOD 1129 9 100/GOOD 2800 19 100/GOOD 2928 16 FT STJOHN 57/GOOD 1144 17 100/GOOD 2898 7 100/GOOD 1970 4 WHITEHORSE 49/FAIR 1078 16 100/GOOD 2020 13 100/GOOD 2422 15 DAWSON 66/GOOD 1059 15 100/GOOD 2538 13 100/GOOD 3428 18 WATSON LAKE 51/FAIR 1092 15 100/GOOD 2448 10 100/GOOD 3116 20 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE 0 0 0 0 WATSON LAKE W 33 W 19 WHITEHORSE SW 30 W 24 MAYO SW 9 0 0 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 33/POOR 256 12 63/GOOD 988 9 68/GOOD 889 23 FRASER VLY 19/POOR 218 10 100/GOOD 1313 15 72/GOOD 787 10 SRN VRISL 34/FAIR 229 21 60/GOOD 947 9 68/FAIR 840 22 CNTRL VRISL 50/FAIR 381 24 68/GOOD 1201 3 60/GOOD 736 21 NRN VRISL 59/GOOD 410 22 100/GOOD 1092 23 100/GOOD 1359 12 TERRACE 36/FAIR 775 10 78/GOOD 2187 4 100/GOOD 2299 5 STEWART 23/POOR 232 11 67/GOOD 1049 9 69/GOOD 914 4 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER NW 12 W 15 W 26 SANDSPIT W 24 W 26 W 28 PORT HARDY NW 29 NW 30 W 39 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/GF $$$$^^