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 28 April 2016

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 2 issued 28 1807UTC:
Area bounded by 48S108E 47S099E 41S103E 34S117E 36S130E 42S139E 47S139E 50S131E
45S119E 48S108E.

Melbourne Gale Warning 6 issued 281811UTC:
Area bounded by 50S134E 44S133E 44S134E 50S139E 50S134E.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 37S080E to high 1031hPa near 38S086E to 28S114E. Forecast 37S080E to
high 1032hPa near 37S083E to 29S106E 28S119E at 290600UTC and 36S080E to high
1034 hPa near 37S085E to 28S114E at 291800UTC.

Ridge [2] from high 1031hPa near 38S086E to 50S092E. Forecast from high 1032hPa
near 37S083E to 45S097E 50S100E at 290600UTC and from high 1034 hPa near
37S085E to 40S100E 50S114E at 291800UTC.

Cold front 38S107E 40S116E 44S119E to low 979 hPa near 46S116E. Forecast
35S123E 44S128E to low 978hPa near 46S124E at 290600UTC and 33S124E 37S129E
46S136E to low 975 hPa near 49S131E at 291800UTC.

Trough forecast 44S093E 50S098E at 291800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 120nm of ridges and 240nm of high:
Variable winds below 20 knots. Slight to moderate seas. Moderate swell
increasing moderate to heavy near ridge [2] south of 43S.

Remainder north of ridge [1]:
SE quarter winds 10/20 knots increasing 15/25 knots west of line 28S090E
26S100E 12S105E. Winds tending variable 10/15 knots east of 116E. Moderate to
rough seas. Moderate swell, decreasing low to moderate east of 115E.

Remainder south of ridge [1], outside warning areas:
SW quarter winds tending NW quarter west of ridge [2], east of cold front and
east of developing trough. Winds turning clockwise within 240nm of low. Wind
speeds 20/30 knots grading to 25/33 knots within 120nm of warning areas. Rough
to very rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms area north of 22S west
from 100E, also within 240nm of fronts. Scattered showers remainder south of
ridge [1]. Visibility reducing below 2nm in precipitation.


The next routine forecast will be issued at 09:00 UTC Friday.