FPCN39 CWLW 211400 SMOKE CONTROL FORECAST FOR COASTAL BC AND THE INTERIOR INCLUDING THE NORTHEAST ISSUED BY THE MOUNTAIN WEATHER SERVICE OFFICE OF ENVIRONMENT CANADA AT 7:00 AM PDT THURSDAY 21 OCTOBER 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 15/POOR 295 18 44/FAIR 712 11 56/GOOD 656 16 KAMLOOPS 15/POOR 422 17 27/POOR 715 12 34/FAIR 663 16 OKANAGAN 18/POOR 518 15 33/POOR 819 12 34/FAIR 663 16 CASTLEGAR 12/POOR 525 5 25/POOR 950 5 32/POOR 906 11 CRANBROOK 17/POOR 1052 9 56/GOOD 1533 10 34/FAIR 1410 9 REVELSTOKE 22/POOR 628 11 32/POOR 977 8 39/FAIR 840 15 FORCAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PENTICTON 0 0 W 19 W 43 CRANBROOK W 17 W 54 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 28/POOR 700 12 93/GOOD 1167 23 54/FAIR 827 27 100 MILE 16/POOR 1010 12 27/POOR 1253 19 54/FAIR 1256 29 WILLIAMS LK 18/POOR 1023 12 28/POOR 1217 19 47/FAIR 1195 27 PUNTZI MNT 24/POOR 1015 12 100/GOOD 1651 20 74/GOOD 1350 21 PR. GEORGE 24/FAIR 917 13 100/GOOD 1448 25 76/GOOD 1162 24 BURNS LAKE 16/POOR 841 12 100/GOOD 1494 31 56/GOOD 1090 22 SMITHERS 16/POOR 841 9 100/GOOD 1163 30 18/POOR 586 22 FORCAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m PR. GEORGE W 37 W 48 SMITHERS SW 24 W 37 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 14/POOR 465 5 14/POOR 412 29 15/POOR 474 23 FT STJOHN 93/GOOD 1341 6 14/POOR 727 32 96/GOOD 1394 15 WHITEHORSE 100/GOOD 1615 26 100/GOOD 1285 37 100/GOOD 1741 12 DAWSON 16/POOR 430 18 30/POOR 501 29 14/POOR 445 5 WATSON LAKE 69/GOOD 1089 22 14/POOR 719 27 59/GOOD 1406 15 FORCAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m DEASE LAKE W 19 W 30 WATSON LAKE W 41 W 54 WHITEHORSE W 26 W 35 MAYO W 28 W 41 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 17/POOR 80 9 14/POOR 102 9 21/POOR 137 16 FRASER VLY 17/POOR 133 10 18/POOR 249 4 28/POOR 335 7 SRN VRISL 13/POOR 56 4 16/POOR 108 7 14/POOR 108 4 CNTRL VRISL 13/POOR 67 5 18/POOR 264 4 29/POOR 299 11 NRN VRISL 20/POOR 109 21 18/POOR 108 16 27/POOR 123 27 TERRACE 56/GOOD 324 40 16/POOR 269 25 100/GOOD 900 21 STEWART 24/POOR 138 26 32/POOR 156 25 13/POOR 44 24 FORCAST UPPER WINDS FOR THURSDAY AFTERNOON (WINDS IN KM/H) : 900m 1800m 2700m VANCOUVER 0 0 NW 24 W 37 SANDSPIT S 29 SW 39 SW 57 PORT HARDY SW 18 W 33 W 46 VENTILATION GUIDELINES: 0-33.....POOR 34-54.....FAIR 55-100.....GOOD. VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET END/ $$$$^^