FPCN39 CWLW 191400
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 SATURDAY 19 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     100   19    2200   9    100   25    3200   9
KAMLOOPS     KEL     100   20    2750   9    100   26    3350   9
OKANAGAN     KEL     100   18    2550   8    100   27    3350   9
CASTLEGAR    SPOK    100   19    2050  20    100   26    3500  21
CRANBROOK    SPOK    100   15    2100  26    100   23    3950  24
REVELSTOKE   KEL     100   17    2550   8    100   23    3450   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 SATURDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PENTICTON    W   11   W   19   W   22
CRANBROOK             W   15   W   28

TODAY'S VENTING: GOOD

VENTING FOR SUNDAY: 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.    100   13    2300  25    100   19    3950  25
PR. GEORGE   P.G.     80   14    1400  15    100   18    2900  20
SMITHERS     P.G.      9   11     500   4     90   16    1500  15
WELLS GRAY   P.G.     60    8     700   8    100   19    4000  25
FT NLSN      F.N.     10   16     500   1     33   18     900   5
FT STJOHN    F.N.      9   15     700   6     34   19    1150   6

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

FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PR. GEORGE            SW  22   SW  30
SMITHERS              SW  17   S   30

TODAY'S VENTING: GOOD EXCEPT FAIR IN THE PEACE

VENTING FOR SUNDAY: GOOD

COAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
VANCOUVER    QUIL     70   15    1750   5     99   20    2500   7
FRASER VLY   QUIL     30   15    1250   5     91   19    2400   6
SRN VRISL    QUIL     59   15    1500   4     89   19    2400   6
CNTRL VRISL  QUIL     60   15    1500   4     89   19    2400   6
NRN VRISL    HRDY     27   11     300   7    100   15    1500  15
TERRACE      ANT     100   12    1300  18    100   15    2100  17
STEWART      ANT      72   12     650  15    100   15    1600  16

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

FORECAST UPPER WINDS FOR SATURDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
VANCOUVER    VR   5   SW  19   SW  30
PORT HARDY   S   37   S   44   SW  37
SANDSPIT     S   57   S   50   S   41

TODAY'S VENTING: GOOD

VENTING FOR SUNDAY: GOOD

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


END/
$$$$^^