FPCN39 CWLW 041400 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PDT THURSDAY 4 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 100/GOOD 1090 10 100/GOOD 1759 16 100/GOOD 1882 16 KAMLOOPS 40/FAIR 1811 6 100/GOOD 2819 26 100/GOOD 2770 21 OKANAGAN 40/FAIR 1962 4 100/GOOD 3323 22 100/GOOD 2563 18 CASTLEGAR 40/FAIR 1746 2 100/GOOD 2469 18 100/GOOD 2411 14 CRANBROOK 40/FAIR 1947 11 100/GOOD 2922 25 100/GOOD 3052 17 REVELSTOKE 40/FAIR 1396 13 100/GOOD 1339 13 95/GOOD 2284 2 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 S 20 S 44 CRANBROOK SW 13 SW 44 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 2031 12 100/GOOD 3264 4 100/GOOD 3597 4 100 MILE 100/GOOD 2260 16 100/GOOD 3178 16 100/GOOD 3583 16 WILLIAMS LK 100/GOOD 2124 17 100/GOOD 3680 14 100/GOOD 3911 13 PUNTZI MNT 100/GOOD 1978 15 100/GOOD 3508 13 100/GOOD 3648 8 PR. GEORGE 100/GOOD 1444 21 100/GOOD 2805 11 100/GOOD 2987 12 BURNS LAKE 100/GOOD 1493 14 100/GOOD 3162 5 88/GOOD 2086 18 SMITHERS 100/GOOD 1413 11 100/GOOD 2875 3 100/GOOD 2747 11 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE S 30 S 31 SMITHERS SE 39 S 41 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 414 7 76/GOOD 1149 17 100/GOOD 3217 8 FT STJOHN 100/GOOD 1413 34 100/GOOD 3035 25 88/GOOD 1941 13 WHITEHORSE 47/FAIR 1435 10 100/GOOD 2223 23 83/GOOD 1740 8 DAWSON 31/POOR 539 21 100/GOOD 3017 14 100/GOOD 2764 14 WATSON LAKE 24/POOR 909 7 45/FAIR 1205 7 100/GOOD 2858 12 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE E 22 SE 30 WATSON LAKE E 33 SE 35 WHITEHORSE E 28 SE 33 MAYO SE 17 E 11 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 725 22 100/GOOD 747 19 86/GOOD 892 8 FRASER VLY 100/GOOD 725 20 100/GOOD 1088 17 100/GOOD 1571 15 SRN VRISL 100/GOOD 802 15 100/GOOD 1055 19 100/GOOD 1186 14 CNTRL VRISL 96/GOOD 782 14 100/GOOD 1512 19 100/GOOD 1123 11 NRN VRISL 67/GOOD 511 18 100/GOOD 1207 14 100/GOOD 1436 13 TERRACE 100/GOOD 1007 14 84/GOOD 1474 6 100/GOOD 1977 7 STEWART 17/POOR 544 11 46/FAIR 286 2 33/POOR 373 11 FORECAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER S 37 S 56 S 67 SANDSPIT SE 51 SE 52 SE 52 PORT HARDY S 40 S 52 S 54 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/LM $$$$^^