FPCN39 CWLW 021351
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 2 JUNE 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 27 19 800 3 100 26 3200 9
KAMLOOPS KEL 72 20 1800 6 100 26 3350 9
OKANAGAN KEL 16 16 650 3 100 25 3350 9
CASTLEGAR SPOK 51 18 1500 5 93 24 3500 5
CRANBROOK SPOK 28 13 1450 4 93 19 3950 5
REVELSTOKE KEL 14 15 650 3 100 24 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 TUESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PENTICTON VR 5 N 15 N 17
CRANBROOK VR 5 VR 5
INVERSION HT BREAKTHRU TEMP
KELOWNA 300 m 16 C
SPOKANE 400 m 15 C
TODAY'S VENTING: GOOD.
VENTING FOR WEDNESDAY: GOOD
VENTING OUTLOOK THURSDAY THRU SATURDAY: 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. 80 13 1850 12 100 21 3950 12
PR. GEORGE P.G. 38 12 1200 7 100 20 3700 11
SMITHERS P.G. 69 16 1600 8 100 24 3500 13
WELLS GRAY P.G. 87 13 2050 12 100 22 4000 12
FT NLSN F.N. 70 13 1850 12 100 21 3450 11
FT STJOHN F.N. 60 12 1200 7 100 20 3200 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 TUESDAY AFTERNOON (WINDS IN KM/H):
900m 1800m 2700m
PR. GEORGE NW 19 NW 28
SMITHERS NW 17 NW 28
INVERSION HT BREAKTHRU TEMP
PR. GEORGE 550 m 13 C
FT. NELSON 500 m 14 C
TODAY'S VENTING: GOOD.
VENTING FOR WEDNESDAY: GOOD.
VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD.
COAST
UPPER ***** MORNING ****** ***** AFTERNOON ****
AIR VI Tmp MXG HT Wnd VI Tmp MXG HT Wnd
(mASL) (kt) (mASL) (kt)
VANCOUVER QUIL 42 17 700 6 100 21 1300 14
FRASER VLY QUIL 42 17 700 6 100 25 1850 18
SRN VRISL QUIL 24 16 600 3 98 22 1350 12
CNTRL VRISL QUIL 58 19 850 8 100 26 2050 16
NRN VRISL HRDY 14 12 250 2 22 18 550 3
TERRACE ANT 9 18 200 12 90 26 2300 7
STEWART ANT 16 16 100 8 92 26 1950 8
*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 N 15 N 17 NE 22
PORT HARDY N 20 NE 15 N 24
SANDSPIT N 35 N 37 N 37
INVERSION HT BREAKTHRU TEMP
QUILLAYUTE 350 m 17 C
PORT HARDY 800 m 19 C
ANNETTE 700 m 17 C
TODAY'S VENTING: GOOD.
VENTING FOR WEDNESDAY: GOOD.
VENTING OUTLOOK THURSDAY THRU SATURDAY: GOOD.
VENTILATION GUIDELINES:
0-33.....POOR
34-54.....FAIR
55-100.....GOOD.
VENTILATION INDICES NORMALLY DROP TO POOR AFTER SUNSET.
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