Western Area High Seas Forecast


High Seas Forecast for Western Metarea 10
WESTERN AREA: 12/30S 90/125E, 30/50S 80/129E
Issued by the Australian Government Bureau of Meteorology, BNOC
For 24 hours commencing 2300 UTC 20 December 2014

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
Melbourne Gale Warning 1 issued 2018904UTC:
Area bounded by 50S102E 47S107E 47S129E 50S130E 50S102E.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge 34S080E to high [1] 1027hPa near 33S088E to high [2] 1027hPa near 36S100E
to 42S121E 39S129E, forecast 35S080E to high [1] 1026hPa near 34S087E to
high [2] 1027hPa near 36S102E to 36S112E 41S129E at 210600UTC and 34S079E to
high [1] 1027 hPa near 34S087E to 32094E high [2] 1026 hPa near 36S103E to
37S117E 40S129E at 211800UTC.

Ridge [2] from high [3] 1024hPa near 44S080E to 40S095E to high 1027hPa near
36S100E, forecast 44S080E to high [3] 1026hPa near 43S088E to 40S098E 36S102E
at 210600UTC and 45S084E to high [3] 1026 hPa near 43S093E to 37S107E
at 211800UTC.

Ridge [3] from high 1027hPa near 33S088E to 38S082E to high [2] 1024hPa near
44S080E 50S080E, forecast from high 1026hPa near 34S087E to high [2] 1026hPa
near 43S088E to 50S085E at 210600UTC and from high [1] near 34S087E to high [3]
near 43S093E to 50S092E at 211800UTC.

Ridge [4] from high 1029hPa near 37S098E to 44S108E 50S109E. Forecast 42S121E
50S121E at 201800UTC, then east of area by 210600UTC and east of area by

Cold front 43S089E 50S106E, forecast 42S096E 45S110E 50S125E at 210600UTC and
40S115E 50S133E at 211800UTC.

Trough 35S093E 38S093E to low 1021hPa near 39S092E, forecast 36S095E to
low 1021hPa near 39S095E at 210600UTC and 34S094E to low 1022hPa near 37S097E
to 39S097E at 211800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and 240nm of highs:
Variable winds to 20 knots, tending W quarter 20/30 knots along ridge [4]
south of 42S. Slight to moderate seas, moderate to rough along ridge [4]
south of 42S. Moderate swell.

Remainder NE of a line 12S110E 20S116E:
Variable winds below 15 knots. Slight seas. Low swell.

Remainder north of ridge [1]:
S quarter winds, tending SE quarter west of 105E. Wind speeds 15/25 knots,
reaching 30 knots at times within area bounded by 35S116E 32S112E 25S111E
23S114E. Moderate to rough seas. Low to moderate swell.

Remainder south of ridge [1], outside warning area:
Clockwise winds 15/25 knots within 180nm of low. NW quarter winds 20/30 knots
east of cold front shifting SW quarter remainder east of ridge [3] grading
to 25/33 knots within 120nm of warning area and tending NW quarter 20/30 knots
remainder west of ridge [3]. Moderate to rough seas, moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of low,
cold front and trough and also NE of line 12S110E 20S116E. Isolated to
scattered showers remainder away from ridges. Visibility reducing below 2nm in


The next routine forecast will be issued at 08:00 UTC Sunday.