FPCN39 CWLW 301330
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 PST MONDAY 30 NOVEMBER 1998 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    2     200   2     16    5     500   2
KAMLOOPS     KEL      11    2     450   2     29    5     850   4
OKANAGAN     KEL       9    1     350   2     29    5     850   4
CASTLEGAR    SPOK     20    3     850   3     27    5    1150   3
CRANBROOK    SPOK     10   -1     950  15     10    2     950  15
REVELSTOKE   KEL       9    1     450   2     10    2     500   2

*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   S   20   S   54
CRANBROOK             S   19   SW  59

TODAY'S VENTING: POOR.

VENTING FOR TUESDAY: POOR.


CENTRAL INTERIOR/NORTHEAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
WILLIAMS L   KEL       9   -2     950   6     47    1    1600   7
PR. GEORGE   HRDY      9   -3     700  17      9   -2     700  17
SMITHERS     ANT       9   -5     500  27      9   -2     500  27
WELLS GRAY   HRDY      9   -4    1000   3     15    0    1400   2
FT NLSN      F.N.      9  -17     400   1     14  -14     700   2
FT STJOHN    F.N.      9  -13     700   5      9  -10     700   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            S   26   S   22
SMITHERS              SE  31   S   22

TODAY'S VENTING: POOR.

VENTING FOR TUESDAY: POOR.


COAST

           UPPER      ***** MORNING ******    ***** AFTERNOON ****
             AIR      VI  Tmp  MXG HT  Wnd    VI  Tmp  MXG HT  Wnd
                               (mASL)  (kt)            (mASL)  (kt)
VANCOUVER    QUIL      9    5     100  16     53    8     500  10
FRASER VLY   QUIL     14    5     200   4     17    7     250   4
SRN VRISL    QUIL     16    6     200   4     53    9     500  10
CNTRL VRISL  QUIL      9    0      50   4      9    0      50   4
NRN VRISL    HRDY     10    4      50   3     37    7     450   7
TERRACE      ANT       9   -2     200  26     10    1     200  26
STEWART      ANT       9    1       0  10      9    1       0  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 MONDAY AFTERNOON (WINDS IN KM/H):
             900m     1800m    2700m
VANCOUVER    NE  11   NE  13   N   15
PORT HARDY   SW  24   SW  31   SW  33
SANDSPIT     S   50   S   52   S   48

TODAY'S VENTING: POOR.

VENTING FOR TUESDAY: FAIR TO GOOD.


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


END/