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 26 November 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 4 issued 261805UTC:
Area bounded by 44S080E 45S094E 50S103E 50S085E 45S080E 44S080E.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 30S080E to high [1] 1027 hPa near 41S098E to 43S118E 41S129E,
forecast 32S080E 31S084E to high [1] 1026 hPa near 45S112E to 46S124E 42S129E
at 270600UTC and 31S080E to high [2] 1024 hPa near 31S084E to 40S106E 47S118E
to high [1] 1027 hPa near 46S129E at 271800UTC.

Ridge [2] from high [1] near 41S098E to 50S100E, forecast from high [1] near
45S112E to 50S112E at 270600UTC and from high [1] near 46S129E to 50S129E
at 271800UTC.

Trough 27S115E to low 1005 hPa near 30S113E to 42S119E, forecast
28S115E to low 1008 hPa near 30S113E to 36S116E 44S124E at 270600UTC and
30S115E to low 1006 hPa near 35S116E to 40S117E 43S119E at 271800UTC.

Cold front [1] 43S119E 50S126E, forecast 45S129E 50S139E at 270600UTC
and further east of area by 271800UTC.

Cold front [2] 43S078E 50S085E, forecast 40S080E 44S089E 50S096E
at 270600UTC and 38S084E 43S096E 50S104E at 271800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 120nm of ridges, 240nm of highs and north of 20S, east of 105E:
Variable winds below 20 knots, becoming W quarter 15/25 knots south of 45S,
near ridge [2]. Slight to moderate seas. Low to moderate swell, increasing
to moderate to heavy near ridge [2].

Remainder north of ridge [1]:
NE quarter winds east of trough, turning SE quarter west of trough and S
quarter north of 30S east of 105E. Winds tending clockwise within 180nm of
low. Wind speed 15/25 knots, increasing to 20/30 knots north of a line
35S117E 38S120E 34S124E and within 300nm west of trough between latitudes
33S and 38S. Moderate to rough seas. Low to moderate swell.

Remainder south of ridge [1] and east of ridge [2]:
N/NW winds east of cold front [1], turning W quarter west of cold front [1].
Wind speeds 15/25 knots, increasing to 20/30 knots south of 47S until
270600UTC. Moderate to rough seas. Moderate to heavy swell.

Remainder south of ridge [1] and west of ridge [2], outside warning area:
N/NW winds east of cold front [2], turning W quarter west of cold front.
Wind speeds 15/25 knots within 240nm of ridges, increasing to 20/30 knots
remainder and grading to 25/33 knots within 120nm of warning area and west of
cold front [2] south of 47S. Moderate to rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
fronts, trough and north of 20S east of 120E. Isolated showers over the
remainder, becoming more scattered south of ridge [1]. Visibility reducing
below 2nm in precipitation.


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