IDW11900
SECURITE

HIGH SEAS FORECAST FOR METAREA 10
WESTERN AREA 12/30S 90/125E, 30/50S 80/129E
ISSUED BY THE AUSTRALIAN BUREAU OF METEOROLOGY, PERTH 

FOR 24 HOURS COMMENCING 2300UTC 22 FEBRUARY 2012

Please be aware, wind gusts can be a further 40 percent stronger than the
averages given here, and maximum waves may be up to twice the height.

PART 1  WARNINGS
Gale Warning within 180 nautical miles of the first Low centre in the western
semicircle until 230300UTC.
Gale Warning within 180 nautical miles of the second Low centre in the western
semicircle from 230000UTC.
Gale Warning south of a line 50S085E 47S090E 45S100E 50S110E after 231800UTC.


PART 2  SITUATION AT 2100UTC. 
Refer to latest warning.
First Low 1002hPa near 40S102E, moving to 37S106E by 230300UTC and weakening to
1007hPa.
Secondary Low 1002hPa near 39S110E, moving to 39S113E 999hPa by 230300UTC and
40S116E 994hPa by 230900UTC and near 42S119E 994hPa by 231500UTC.
Primary Ridge near 39S080E 32S090E 29S100E 35S110E 36S129E moving to 39S080E
29S099E 30S115E after 221800UTC.
Secondary Ridge near 40S080E 46S110E 45S120E 45S129E. 

PART 3  FORECAST
Within 180nm of ridges:
Variable winds to 15 knots tending to SE/SW 15/25 knots between 90E and 105E.
Slight to moderate seas. Low to moderate swell. 
Northeast of a line 12S100E 22S114E, north of continent:
Variable winds to 15 knots. Slight to moderate seas. Low swell.
Remainder north of Primary ridge:
E/SE winds 15/25 knots tending S/SE 15/25 knots east of 110E, south of 22S.
Moderate to rough seas. Low to moderate swell.
Within 240nm of lows, outside warning area:
Clockwise winds 20/33 knots moderate to rough seas, moderate swell.
Remainder between Primary Ridge and Secondary ridge, outside of warning area:
SW/SE winds 15/25 knots increasing to 25/33 knots within 92E and 115E and
tending NW/NE'ly east of 120E moderate to rough seas, moderate swell
Remainder south of Secondary ridge:
NW/SW winds 20/30 knots. Moderate to rough seas. Moderate swell.


WEATHER PERTH
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