FPCN39 CWLW 141400
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 14 JUNE 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      21   21     800   2     92   32    3200   5

KAMLOOPS     KEL      31   22    1150   3     92   31    3350   5

OKANAGAN     KEL      18   19     800   2     92   30    3350   5

CASTLEGAR    SPOK     32   19     750   9     94   29    2600   7

CRANBROOK    SPOK      9   19     950  13     87   26    3950   4

REVELSTOKE   KEL      25   20    1000   3     92   29    3450   5


*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   VR   5   VR   5
CRANBROOK             VR   5   VR   5

TODAY'S VENTING: BECOMING GOOD THIS AFTERNOON.

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.     36   18    1250  10    100   25    3950   8

PR. GEORGE   P.G.     20   17     900   5    100   25    3700   7

SMITHERS     P.G.     18   17     900   3     63   23    1750   5

WELLS GRAY   P.G.     ##   ##     ###  ##    100   28    4000   8

FT NLSN      F.N.      9   19     700   0     79   26    2500   5

FT STJOHN    F.N.      9   18     700   8     97   23    3700   5


*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            SE  13   S   19
SMITHERS              S   19   SE  19

TODAY'S VENTING: BECOMING GOOD THIS AFTERNOON.

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     16   19     350   3     20   23     550   3

FRASER VLY   QUIL     20   23     550   3     50   30    1000   7

SRN VRISL    QUIL     17   19     300   3     25   24     550   3

CNTRL VRISL  QUIL     17   19     300   3     43   26    1100   4

NRN VRISL    HRDY     18   15     400   2     39   20     750   5

TERRACE      ANT     100   19    1350  17    100   26    3200  28

STEWART      ANT      18   18     450   2    100   26    3000  22


*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   SE  22   S   24
PORT HARDY   SE  15   S   35   S   37
SANDSPIT     SE  50   S   57   S   57

TODAY'S VENTING: POOR TO FAIR IN THE SOUTH. GOOD IN THE NORTH.

VENTING FOR TUESDAY: FAIR.




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


END/MWSO
$$$$^^