FPCN39 CWLW 211400 SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PDT FRIDAY 21 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 77/GOOD 669 17 100/GOOD 1834 18 100/GOOD 1714 18 KAMLOOPS 89/GOOD 912 16 100/GOOD 2446 22 100/GOOD 2326 28 OKANAGAN 44/FAIR 762 15 60/GOOD 2549 21 100/GOOD 2346 27 CASTLEGAR 16/POOR 660 3 100/GOOD 2451 15 100/GOOD 1298 16 CRANBROOK 18/POOR 1091 7 100/GOOD 2854 15 100/GOOD 2469 21 REVELSTOKE 45/FAIR 922 9 100/GOOD 2261 13 39/FAIR 768 15 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 SW 15 SW 30 CRANBROOK SW 9 SW 22 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 1069 27 100/GOOD 1305 22 100/GOOD 3648 17 100 MILE 100/GOOD 1667 24 100/GOOD 2895 26 100/GOOD 2933 23 WILLIAMS LK 35/FAIR 1128 25 77/GOOD 1544 11 100/GOOD 3704 25 PUNTZI MNT 75/GOOD 1324 20 100/GOOD 2155 18 100/GOOD 3928 27 PR. GEORGE 60/GOOD 943 28 100/GOOD 1713 21 100/GOOD 3583 20 BURNS LAKE 69/GOOD 1085 23 100/GOOD 1437 19 100/GOOD 3064 24 SMITHERS 42/FAIR 763 22 100/GOOD 1216 13 100/GOOD 1882 17 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE SW 31 SW 35 SMITHERS S 37 SW 44 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 38/FAIR 580 25 100/GOOD 2518 22 73/GOOD 1020 13 FT STJOHN 28/POOR 855 20 100/GOOD 2583 23 100/GOOD 2646 32 WHITEHORSE 100/GOOD 1517 20 100/GOOD 2505 17 100/GOOD 2756 21 DAWSON 41/FAIR 569 30 86/GOOD 1438 2 46/FAIR 983 8 WATSON LAKE 38/FAIR 885 26 100/GOOD 2202 17 100/GOOD 3177 12 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE S 35 SW 52 WATSON LAKE SW 33 SW 39 WHITEHORSE S 43 S 70 MAYO S 44 S 43 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 27/POOR 234 14 73/GOOD 613 16 100/GOOD 1514 25 FRASER VLY 19/POOR 163 14 100/GOOD 1476 17 100/GOOD 1597 20 SRN VRISL 13/POOR 90 8 60/GOOD 215 17 100/GOOD 1250 31 CNTRL VRISL 21/POOR 158 16 60/GOOD 474 13 100/GOOD 1553 24 NRN VRISL 21/POOR 93 34 60/GOOD 60 19 100/GOOD 1637 26 TERRACE 29/POOR 424 19 60/GOOD 354 9 100/GOOD 1473 13 STEWART 27/POOR 180 20 60/GOOD 267 12 75/GOOD 554 11 FORECAST UPPER WINDS FOR FRIDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER S 9. SW 24 S 31 SANDSPIT S 66 S 69 S 70 PORT HARDY S 50 S 54 S 52 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/ $$$$^^