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 1100 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 270659UTC:
Area bounded by 44S149E 47S150E 50S153E 50S147E 48S147E 45S145E 44S149E.

Melbourne Gale Warning 2 issued 270702UTC:
Area bounded by 35S156E 35S152.5E 36S150E 39S152E 39S155E 37S155E 35S156E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 32S130E to high 1030 hPa near 38S132E to 45S132E 50S140E. Forecast
32S132E to high 1031 hPa near 39S133E to 43S134E to high 1035 hPa near 46S137E
to 50S142E at 271800UTC and 32S134E to high 1031 hPa near 38S134E to high 1035
hPa near 46S138E to 50S143E at 280600UTC.

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

Ridge [3] 45S129E 50S133E. Forecast 46S129E to high 1035 hPa near 47S134E to
50S138E at 271800UTC and 47S129E to high 1035 hPa near 47S137E to 50S141E at
280600UTC.

Ridge [4] 38S132E 42S140E 46S162E 45S170E. Forecast 47S170E 47S170E 48S158E
44S152E at 271800UTC and 49S170E 49S162E 47S156E at 280600UTC.

Trough [1] 33S168E to low [1] 1013 hPa near 38S156E to 36S150E. Forecast
37S150E 37S152E to low [1] 1010 hPa near 40S157E to 42S160E 39S170E at
271800UTC and 43S170E 45S162E to low [1] 1006 hPa near 43S159E to 37S156E
33S152E at 280600UTC.

Trough [2] 28S155E 35S158E 38S156E. Forecast 28S155E 35S158E 40S157E at
271800UTC and 28S157E 33S160E 42S157E at 280600UTC.

Cold front 42S133E 45S145E to low [2] 1014 hPa near 50S149E. Front forecast
south of 50S by 271800UTC.

Low [2] forecast 1013 hPa near 47S150E at 271800UTC and 1015 hPa near 44S147E
at 280600UTC.

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 10/20 knots increasing to 15/25 knots by
271800UTC. Winds grading to 20/30 knots at times east of a line 28S157E 45S164E
after 271800UTC and increasing to 25/33 knots within 120nm of warning area.
Slight to moderate seas rising to moderate to rough after 271800UTC. Low to
moderate swell increasing to moderate to heavy east of trough [2].

Remainder east of ridge [1], outside warning areas:
S quarter winds tending E quarter east of low [1] north of ridge [4] shifting
NW quarter between ridge [4] and front and turning clockwise within 240nm of
lows. Wind speeds 15/25 knots increasing to 20/30 knots within 240nm of low [2]
grading to 25/33 knots within 120nm of warning areas. Moderate to rough seas
abating to slight to moderate west of low [3]. Moderate to heavy swell
increasing to heavy near low [2].

Remainder west of ridge [1]:
NE quarter winds tending NW quarter south of ridge [3]. Wind speeds 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 front 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 21:00 UTC Thursday.