South Eastern Area High Seas Forecast

IDY10210
SECURITE

High Seas Forecast for South Eastern Metarea 10
SOUTHEASTERN AREA: 28S/50S, 129E/170E
Issued by the Australian Government Bureau of Meteorology, BNOC
For 24 hours commencing 2300 UTC 27 August 2015

PLEASE BE AWARE
Wind gusts can be 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 271817UTC:
Area bounded by 50S153E 50S149E 45S145E 44S145E 43S146E 43S148E 50S153E.

Melbourne Gale Warning 2 issued 271830UTC:
Area bounded by 35S160E 35S152E 39S151E 41S154E 41S155E 35S160E.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 32S132E to high [1] 1031 hPa near 39S133E to 43S134E to high [2] 1035
hPa near 46S137E to 50S145E. Forecast 32S134E to high [1] 1031 hPa near 39S134E
to high [2] 1035 hPa near 46S138E to 50S144E at 280600UTC and 33S136E to high
[2] 1034 hPa near 45S138E to 50S147E at 281800UTC.

Ridge [2] 28S166E 32S170E, Forecast 28S167E 30S170E at 280600UTC then slow
moving.

Ridge [3] 46S129E to high [3] 1034 hPa near 47S134E to 50S138E. Forecast
47S129E to high [3] 1035 hPa near 47S137E to 50S141E at 280600UTC and 45S138E
47S137E to high [3] 1033 hPa near 50S141E at 281800UTC.

Ridge [4] 47S170E 47S170E 48S158E 44S152E. Forecast 50S170E 49S162E at
280600UTC and out of area by 281200UTC.

Trough [1] 37S150E 37S152E to low [1] 1011 hPa near 40S157E to 42S160E 39S170E.
Forecast 33S152E 37S156E to low [1] 1006 hPa near 43S159E to 45S162E 43S170E at
280600UTC and 31S157E 34S159E to low [1] 1004 hPa near 43S159E to 44S162E
43S170E at 281800UTC.

Trough/cold front [2] 28S155E 35S158E 40S157E. Forecast 28S157E 32S160E 43S159E
at 280600UTC and 28S159E 34S165E 43S159E at 281800UTC.

Low [2] 1013 hPa near 48S151E. Forecast 1014 hPa near 45S149E at 280600UTC and
1017 hPa near 42S148E at 281800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges, 300nm of highs and remainder NE of ridge [2]:
Variable winds below 20 knots. Slight to moderate seas. Low to moderate swell
increasing to moderate to heavy near ridge [4].

Remainder north of trough [1], outside warning area:
N quarter winds tending W quarter west of trough [2] and turning clockwise
within 240nm of low [1]. Wind speeds 15/25 knots, grading to 20/30 knots at
times east of a line 28S157E 45S164E and increasing to 25/33 knots within 120nm
of warning area. Moderate to rough seas. Low to moderate swell increasing to
moderate to heavy east of trough [2].

Remainder east of ridge [1], outside warning area:
S quarter winds 15/25 knots tending E quarter east of low [1] north of ridge
[4], and NW quarter south of ridge [4]. Winds turning clockwise within 240nm of
lows. Winds elsewhere variable below 20 knots. Wind speeds increasing to 20/30
knots within 360nm of low [2] in southwestern semicircle and grading to 25/33
knots within 120nm of warning areas. Moderate to rough seas. Moderate to heavy
swell.

Remainder west of ridge [1]:
Variable winds 10/20 knots. Slight to moderate seas. Low to moderate swell
increasing to moderate to heavy south of 40S.

Rain areas, scattered showers and isolated thunderstorms within 240nm of lows,
180nm of troughs and remainder north of trough [1] east of trough [2] away from
ridge [2]. Visibility reducing below 2nm in precipitation.

WEATHER MELBOURNE

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