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 1 December 2015

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

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 30S090E 36S110E 37S122E to high [1] 1025 hPa near 36S129E, forecast
from high [1] 1022 hPa near 30S090E to 35S107E 38S115E 36S129E at 020600UTC and
27S090E 41S122E 39S129E at 021800UTC.

Ridge [2] 36S080E 39S092E, forecast 36S080E 37S097E at 020600UTC and 33S080E
35S092E 42S108E at 021800UTC.

Ridge [3] forecast near 36S080E 50S084E at 020600UTC and 33S080E to high [2]
1029 hPa near 37S082E to 50S095E at 021800UTC.

Cold front 30S080E 40S098E 45S102E 50S107E, forecast 30S084E 35S097E 41S106E
47S113E 50S119E at 020600UTC and 30S090E 33S101E 38S110E 50S125E at 021800UTC.

Trough south of area forecast 45S106E 50S113E at 021800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and 240nm of high:
Variable winds below 20 knots tending S quarter 10/20 knots along ridge [2] and
W quarter 10/20 knots along ridge [3]. Slight to moderate seas. Low to moderate
swell increasing to moderate to heavy swell south of 33S.

Remainder north of ridge [1]:
W quarter winds west of 117E, south of 30S. SE quarter winds remainder tending
SW quarter east of line 12S105E 23S108E 27S114E and becoming S quarter east of
36S112E 27S104E 20S105E. Wind speeds 15/25 knots west of 100E and also in area
south of 20S increasing 20/30 knots at times east of line 36S112E 27S104E
20S105E with moderate to rough seas. Winds easing 10/20 knots remainder with
seas abating slight to moderate. Low to moderate swell.

Remainder south of ridge [1]:
NW quarter winds tending SW quarter west of cold front, south of ridge [2] east
of ridge [3] and S quarter north of ridge [2]. Wind speeds 15/25 knots
increasing to 20/30 knots east of cold front south of 39S and west of cold
front within 90nm of front at times. Winds tending E quarter 15/25 knots
remainder west of 90S north of ridge [2] and becoming NW quarter 20/30 knots
remainder west of ridge [3] reaching 25/33 knots at times in the far SW after
020900UTC. Moderate to rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
front and trough. Scattered showers remainder south of 40S. Isolated showers
north of ridge [1]. Visibility reducing below 2nm in precipitation.


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