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 2300 UTC 20 November 2017

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
Nil.

Part 2 Situation at 1800 UTC
Cold front from 33S075E 40S080E to low [1] 992 hPa near 46S076E to 48S103E
50S107E. Forecast from 30S080E 41S095E to low [1] 1006 hPa near 45S094E 45S110E
to low [2] 1000 hPa near 49S115E to 50S116E at 220000UTC.

High 1022 hPa near 33S100E. Forecast 1025 hPa near 36S111E at 220000UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of line 21S112E 34S115E:
Southerly quarter winds 20/30 knots. Moderate to rough seas. Moderate swell.

North of line 34S123E 38S123E 38S129E:
Southerly quarter winds 15/25 knots, increasing to 20/30 knots after 210900UTC.
Moderate to rough seas. Moderate swell.

South of line 33S080E 48S129E and east of cold front:
Northwesterly quarter winds, tending clockwise within 300nm of lows. Wind
speeds 20/30 knots, increasing to 25/33 knots within 240nm of low [2] in
northeastern quadrant after 211200UTC. Rough to very rough seas. Moderate to
heavy swell.

West of cold front:
Variable winds to 25 knots with slight to moderate seas. Winds becoming
clockwise 20/30 knots within 240nm of low [2] and easterly quarter 20/30 knots
southwest of line 45S080E 47S089E 50S085E until 211800UTC with moderate to
rough seas. Moderate swell.

Remainder:
Winds below 25 knots. Slight to moderate seas. Moderate swell, increasing to
moderate to heavy south of 35S.

Scattered showers and isolated thunderstorms north of line 12S110E 15S115E
14S125E, northeast of line 34S121E 42S129E and within 300nm of cold front.
Visibility reducing below 2nm in precipitation.

WEATHER MELBOURNE

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