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 1100 UTC 28 March 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
Melbourne Gale Warning 1 issued 280614UTC:
Area bounded by 46S096E 46S130E 48S138E 50S139E 50S091E 46S096E.

Melbourne Gale Warning 3 issued 280619UTC:
Area bounded by 46S119E 46S135E 43S132E 45S145E 50S149E 50S116E 46S119E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 34S079E to high 1028 hPa near 33S087E to 34S112E 32S129E, forecast
33S080E to high 1026 hPa near 32S085E to 32S102E 35S118E 33S129E and then
remain slow moving.

Ridge [2] 46S080E 46S081E, forecast 44S080E 46S094E at 281800UTC and 42S080E
43S090E 46S109E at 290600UTC.

Cold front/trough [1] 45S080E 49S097E 50S098E, forecast 43S080E 43S086E 47S109E
50S113E at 281800UTC and 40S080E 41S092E 45S107E 45S118E 50S129E at 290600UTC.

Trough [2] 12S100E 18S100E, forecast 12S099E 19S099E at 281800UTC and 12S098E
to low [1] 1010 hPa near 19S101E at 290600UTC.

Low [2] 1008hPa near 14S122E at 280600UTC, forecast low [2] 1009 hPa near
15S118E at 281800UTC and low [2] 1008 hPa near 16S116E at 290600UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridge [1], 120nm of ridge [2], 240nm of high and within 240nm
east of trough [2]:
Variable winds below 20 knots. Slight to moderate seas. Low to moderate swell
increasing to heavy near ridge [2].

Remainder north of ridge [1]:
SE quarter winds tending E quarter east of trough [2]. Winds turning clockwise
within 180nm of low [2] and 120nm of low [1]. Wind speeds 15/25 knots
increasing to 20/30 knots within 120nm of low [2] in the southern semicircle
and also within 60nm of low [1] in the southwest semicircle. Moderate to rough
seas. Low swell increasing to moderate south and west of a line 12S095E 27S114E.

Remainder south of ridge, outside warning areas:
NW quarter winds tending W quarter south of front/trough [1]. Wind speeds 15/25
knots increasing to 20/30 knots within 300nm east of front/trough [1] and
grading to 25/33 knots within 180nm of warning areas. Moderate to rough seas
rising to rough to very rough near warning areas. Moderate to heavy swell
increasing to heavy near/south of front/trough [1].

Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
front and troughs. Scattered showers and thunderstorms within 180nm of lows.
Scattered showers over remainder southwest of front/trough [1]. Visibility
reducing below 2nm in precipitation.


The next routine forecast will be issued at 20:00 UTC Saturday.