FPCN39 CWLW 051353
SMOKE CONTROL FORECAST FOR BC AND YUKON ISSUED BY THE MOUNTAIN WEATHER CENTRE OF
ENVIRONMENT CANADA AT 7:00 AM PST MONDAY 4 DECEMBER 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  15/POOR   302   12     14/POOR   366    4     15/POOR   374   14
KAMLOOPS     22/POOR   513   10     25/POOR   693    4     20/POOR   582   10
OKANAGAN     16/POOR   513   13     26/POOR   686    8     16/POOR   685   10
CASTLEGAR    16/POOR   567   13     24/POOR   816    6     20/POOR   780    6
CRANBROOK    12/POOR   964    9     19/POOR  1315    4     31/POOR  1298   11
REVELSTOKE   16/POOR   557    8     23/POOR   764    7     19/POOR   733    4

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H) :
            900m     1800m     2700m
PENTICTON  0   0     W  15     W  35
CRANBROOK            0   0     W  26

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      32/POOR   739   22     33/POOR   865    9     15/POOR   594   21
100 MILE     12/POOR   958   23     33/POOR   900    9     23/POOR  1109   20
WILLIAMS LK  12/POOR   963   23     33/POOR  1339    4     20/POOR  1086   18
PUNTZI MNT   13/POOR   976    4     15/POOR  1075    2     14/POOR   945   18
PR. GEORGE   20/POOR   791   20     27/POOR   883   17     13/POOR   717   25
BURNS LAKE   16/POOR   835    6     15/POOR   806   10     13/POOR   741   26
SMITHERS     19/POOR   655   11     14/POOR   578    8     40/FAIR   903   24

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H) :
            900m     1800m     2700m
PR. GEORGE           W  30     W  43
SMITHERS             W  33     W  39

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      12/POOR   414   17     13/POOR   415    9     13/POOR   401   22
FT STJOHN    22/POOR   886    9     13/POOR   711   31     15/POOR   728   37
WHITEHORSE   19/POOR   787   24     13/POOR   721   25     13/POOR   713   35
DAWSON       13/POOR   389   26     12/POOR   377   32     14/POOR   391   36
WATSON LAKE  13/POOR   745    5     12/POOR   738   10     13/POOR   707   25

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H) :
            900m     1800m     2700m
DEASE LAKE           SW 30     W  33
WATSON LAKE          W  50     W  50
WHITEHORSE           SW 43     SW 57
MAYO                 S  20     SW 24

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    19/POOR    61   31     13/POOR    23   10     14/POOR    71    5
FRASER VLY   15/POOR   102   21     13/POOR    94    8     16/POOR   192    5
SRN VRISL    19/POOR   102   17     17/POOR   115    9     16/POOR   123    9
CNTRL VRISL  20/POOR   130   20     19/POOR   223    2     16/POOR   213    3
NRN VRISL    19/POOR   108   21     33/POOR   317   11     23/POOR   167   15
TERRACE      14/POOR   276   14     20/POOR   379   11     13/POOR   253   21
STEWART      20/POOR   143   14     13/POOR    78   11     14/POOR    56   24

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H) :
            900m     1800m     2700m
VANCOUVER  0   0     NW 24     NW 46
SANDSPIT   S  42     SW 35     SW 43
PORT HARDY S  11     W   9     W  30

VENTILATION GUIDELINES:
          0-33.....POOR
          34-54.....FAIR
          55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET

END/MWSO