FPCN39 CWLW 151400
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 TUESDAY 15 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      24   23     700   3     94   34    3200   5
KAMLOOPS     KEL      26   24     900   3     94   33    3350   5
OKANAGAN     KEL      18   21     650   3     94   32    3250   5
CASTLEGAR    SPOK     29   23     850   6    100   31    1800  14
CRANBROOK    SPOK     10   21     950  19    100   29    3950  13
REVELSTOKE   KEL      15   20     650   3     92   31    3250   4

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

FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PENTICTON    SE   9   SE  19   SE  24
CRANBROOK             E    9   SE  20

TODAY'S VENTING: GOOD

VENTING FOR WEDNESDAY: 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   20     950  10    100   28    3950  10
PR. GEORGE   P.G.     15   18     850   4    100   27    3700   9
SMITHERS     P.G.     13   20     850   1     76   26    2300   6
WELLS GRAY   P.G.      9   20     950  10    100   28    4000  10
FT NLSN      F.N.      9   22     700   0    100   28    2750   9
FT STJOHN    F.N.      9   20     700  10    100   25    3700  11

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

FORECAST UPPER WINDS FOR TUESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
PR. GEORGE            SE  17   SE  30
SMITHERS              S   11   SE  30

TODAY'S VENTING: GOOD

VENTING FOR WEDNESDAY: GOOD

COAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
VANCOUVER    QUIL     48   19     750   7     72   24    1200   8
FRASER VLY   QUIL     60   21     900   8     74   28    1450   7
SRN VRISL    QUIL     44   20     800   5     60   25    1250   5
CNTRL VRISL  QUIL     44   20     800   5     61   26    1300   5
NRN VRISL    HRDY     19   14     200   5     37   19     650   5
TERRACE      ANT       9   18     200   6     73   23    1150  10
STEWART      ANT      12   17     250   2     35   23     650   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 TUESDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
VANCOUVER    W   19   S   13   S   43
PORT HARDY   S   20   S   30   S   26
SANDSPIT     S   43   S   50   S   50

TODAY'S VENTING: GOOD LOCALLY FAIR

VENTING FOR WEDNESDAY: FAIR

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


END/MWSO
$$$$^^