Western Area High Seas Forecast

IDY10220
SECURITE

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 1100 UTC 29 August 2015

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
Melbourne Gale Warning 3 issued 290627UTC:
Area bounded by 43S127E 50S131E 50S119E 47S118E 43S127E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 30S080E 21S107E 21S117E. Forecast 30S080E 28S102E 22S115E at
291800UTC and 28S080E 29S105E 32S116E at 300600UTC.

Ridge [2] 30S080E 39S085E 50S077E. Forecast 30S088E 40S086E 50S080E at
291800UTC and 30S090E 40S091E 50S093E at 300600UTC.

Cold front [1] 21S107E 40S118E 50S119E. Forecast 33S119E 50S126E at 291800UTC
and 32S127E 50S124E at 30600UTC.

Cold front [2] 43S099E 50S099E. Forecast 40S099E 45S107E 50S106E at 291800UTC
and from 40S109E 47S114E to low 996 hPa near 50S111E at 300600UTC.

Trough [1] 40S112E 50S119E. Forecast 40S116E 50S122E at 291800UTC and 40S124E
50S121E at 300600UTC.

Trough [2] 40S106E 48S109E. Forecast from 41S113E to low 997 hPa near 48S113E
at 291800UTC and from 45S120E to low 996 hPa near 50S115E at 300600UTC.

Trough [3] developing near 36S076E 40S080E 42S079E at 291800UTC and forecast
34S080E 39S082E 42S080E at 30600UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges:
Variable winds below 20 knots. Slight to moderate seas. Moderate to heavy swell.

Remainder north of ridge [1]:
Variable winds below 20 knots east of 110E, tending SE quarter 10/20 knots west
of 110E. Slight to moderate seas. Moderate to heavy swell, decreasing to
moderate to low east of 115E.

Remainder south of ridge [1] and east of cold front [1], outside warning area:
N quarter winds, tending NW quarter north of 30S. Wind speeds 15/25 knots
increasing to 20/33 knots south of 32S outside warning area. Moderate to rough
seas. Moderate to heavy swell.

Remainder west of cold front [1] and east of ridge [2], outside warning area:
W quarter winds, turning NW quarter within 240nm east of troughs/cold front and
clockwise within 180nm of low. Winds then turning SW quarter south of 40S west
of cold front [2]. Wind speeds 15/25 knots reaching 20/30 knots at times south
of 32S and increasing to 25/33 knots within 120nm of warning area. Moderate to
rough seas. Moderate to heavy swell.

Remainder west of ridge [2]:
N quarter, turning SW quarter west of trough. Wind speeds 15/25 knots,
increasing to 20/33 knots south of 46S after 300001UTC. Moderate to rough seas.
Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
fronts and 180nm of troughs. Scattered to isolated showers over remainder south
of ridge [1] and away from ridge [2]. Visibility reducing below 2nm in
precipitation.

WEATHER MELBOURNE

The next routine forecast will be issued at 21:00 UTC Saturday.