FPCN39 CWLW 161400
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 WEDNESDAY 16 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       9   22     200   5     84   27    1100  13
KAMLOOPS     KEL      38   23     650  11     85   27    1450  11
OKANAGAN     KEL      59   24     850  12     87   28    1650  10
CASTLEGAR    SPOK     50   22    1050   9     91   28    1650  12
CRANBROOK    SPOK      9   21     950  15    100   28    3950  18
REVELSTOKE   KEL       9   20     450   5     84   27    1650  10

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

FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PENTICTON    W    9   W   17   SW  19
CRANBROOK             VR   5   W   17

TODAY'S VENTING: GOOD

VENTING FOR THURSDAY: 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.     10   19     950  23    100   25    2650  28
PR. GEORGE   P.G.     31   21     900  12    100   25    1750  20
SMITHERS     P.G.     14   19     650   5     79   25    1300  13
WELLS GRAY   P.G.     10   19     950  23    100   25    2750  28
FT NLSN      F.N.      9   21     400   0     92   27    1600  12
FT STJOHN    F.N.      9   20     700  16    100   25    2550  18

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

FORECAST UPPER WINDS FOR WEDNESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PR. GEORGE            SW  15   SW  31
SMITHERS              SW  24   SW  31

TODAY'S VENTING: GOOD

VENTING FOR THURSDAY: GOOD

COAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
VANCOUVER    QUIL     59   16     750  10    100   20    1600  11
FRASER VLY   QUIL     40   17     700  10    100   22    2000  12
SRN VRISL    QUIL     54   17     800   7     99   21    1700  10
CNTRL VRISL  QUIL     58   17     800   8    100   21    1750  10
NRN VRISL    HRDY     12   13     200   2     69   17     800  11
TERRACE      ANT      98   16    1300  16    100   20    3200  17
STEWART      ANT      88   16     950  14    100   20    3000  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 WEDNESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
VANCOUVER    SW   9   SW  15   W   24
PORT HARDY   S   26   S   35   S   35
SANDSPIT     S   46   S   50   S   50

TODAY'S VENTING: GOOD

VENTING FOR THURSDAY: GOOD

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


END/
$$$$^^