FPCN39 CWLW 051400
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 MONDAY 5 JULY 1999 FOR TODAY.

VENTILATION INDICES (TEMPERATURE) AND MIXING HEIGHTS.
MIXING HEIGHTS IN METRES ABOVE SEA LEVEL.
AVERAGE WINDS IN KNOTS.

SPOT INDICES ARE DETERMINED BY THE ASPECT AND ELEVATION OF THE SITES.
COMPARE WINDS, TEMPERATURES AND ELEVATION WITH THE SITES HERE
TO DETERMINE THE INDEX IN ANY OTHER AREA.

SOUTHERN INTERIOR

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
FRSR CANYN   KEL       9   15     200   5    100   21    2000  19
KAMLOOPS     KEL       9   16     400   2    100   21    2300   9
OKANAGAN     KEL       9   14     400   2     99   20    2150   9
CASTLEGAR    SPOK      9   16     600   8     97   21    2800   7
CRANBROOK    SPOK      9   14    1000   2    100   20    3950   7
REVELSTOKE   KEL       9   15     500   4     83   17    1750   9

*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PENTICTON    VR   5   SW  11   W   15
CRANBROOK             SW  11   W   22

TODAY'S VENTING: GOOD.

VENTING FOR TUESDAY: GOOD.


CENTRAL INTERIOR/NORTHEAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
WILLIAMS L   P.G.      9   13    1000   2    100   16    3950  19
PR. GEORGE   P.G.      9   11     700   1     93   14    1950  12
SMITHERS     P.G.      9   13     600   2     54   14    1400   8
WELLS GRAY   P.G.      9   13    1100   2    100   16    4000  19
FT NLSN      F.N.      9   10     500   3     75   15    1850   7
FT STJOHN    F.N.      9   10     800   4    100   17    3700   7

*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PR. GEORGE            W   22   W   31
SMITHERS              W   19   NW  31

TODAY'S VENTING: GOOD.

VENTING FOR TUESDAY: GOOD.


COAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
VANCOUVER    QUIL      9   15     200   3     60   19    1550   5
FRASER VLY   QUIL      9   16     200   3     60   21    1600   4
SRN VRISL    QUIL      9   14     200   2     56   21    1600   4
CNTRL VRISL  QUIL      9   15     200   4     55   20    1550   4
NRN VRISL    HRDY      9   13     100   9     69   16    1050   8
TERRACE      ANT       9   16     400  10    100   20    2000  17
STEWART      ANT       9   15     400   4    100   19    1900  15

*SUBTRACT 20 FROM THE VENTILATION INDEX IN VALLEYS IF THE MIXING
HEIGHT IS BELOW THE HEIGHT OF THE LOCAL HILLS.

FORECAST UPPER WINDS FOR MONDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
VANCOUVER    VR   5   VR   5   VR   5
PORT HARDY   VR   5   VR   5   NW  13
SANDSPIT     W   17   NW  19   W   15

TODAY'S VENTING: GOOD.

VENTING FOR TUESDAY: GOOD.


END/MWSO
$$$$^^