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 3 September 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 3 issued 031805UTC:
Area bounded by 50S144E 47S156E 44S153E 48S140E 50S144E.

Melbourne Gale Warning 5 issued 031844UTC:
Area bounded by 33S158E 35S158E 36S160E 32S160E 33S158E.

New Zealand Gale Warning 087 issued 031800UTC:
Low 975hPa near 56S173E moving southeast 20kt.
1. Within 360 nautical miles of low in northern semicircle:
Clockwise 35kt at times.
2. Within 180 nautical miles of low in southern semicircle:
Clockwise 35kt developing next 6-12 hours.
Gale areas moving with low.

New Zealand Gale Warning 089 issued 031800UTC:
Over waters east of 160E.
In an area bounded by 43S160E 48S164E 50S160E 43S160E: Northwest 35kt
developing next 6-12 hours.

New Zealand Gale Warning 088 issued 031800UTC:
Over waters east of 160E.
In a belt 180 nautical miles wide centred on a line 38S166E 35S160E 32S158E:
Southeast 35kt. Gale area moving ENE 15kt.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 42S122E to high [1] 1028 hPa near 35S133E to 43S157E 46S170E,
forecast 50S133E 45S131E to high [1] 1026 hPa near 37S135E to 36S148E 41S170E
at 040600UTC and from high [2] 1021 hPa near 50S141E to 42S138E to high [1]
1025 hPa near 36S140E to 33S153E 38S170E at 041800UTC.

Ridge [2] 38S163E 38S166E 36S170E moving outside the area by 040600UTC.

Cold front [1] 28S162E 33S163E 31S154E 35S162E to low [1] 997 hPa near 35S160E
31S153E, forecast 28S170E to low [1] 999 hPa near 34S170E to low [3] 1001 hPa
near 33S164E 28S157E at 040600UTC and 31S170E 28S164E at 041800UTC.

Cold front [2] 40S164E 44S170E, moving east of area by 040600UTC.

Cold front [3] 51S129E to low 994 hPa near 52S145E, forecast 49S135E 48S145E
49S154E to low [2] 988 hPa near 50S158E at 040600UTC and 45S141E 43S156E
44S161E to low [2] 980 hPa near 50S169E at 041800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridge[1], 120nm of ridge [2] and 240nm of highs:
Variable winds below 20 knots tending S quarter 10/20 knots along ridge [1]
east of 150E. Slight to moderate seas. Moderate to heavy swell.

Remainder south of ridge [1], outside warning areas:
Clockwise winds 20/30 knots within 300nm of low [2]. W quarter winds 20/30
knots north of cold front [2] shifting S/SW south and west of cold front. Wind
speeds grading 25/33 knots within 120nm of warning areas, moderate to rough
seas, moderate to heavy swell.

Remainder north of ridge [1], outside warning areas:
W/NW winds 15/25 knots south of ridge [2]in area east of cold front [2]
increasing to N quarter 20/30 knots remainder east of cold front [1] in area
north of ridge [2] with winds tending W quarter remainder north of cold front
[1]. Clockwise winds 20/30 knots within 300nm of lows tending S quarter
remainder east of 150E south of cold fronts. Winds becoming N quarter 15/25
knots west of ridge [1] in area south of high [1] after 040600UTC. Wind speeds
grading 25/33 knots within 120nm of warning areas, moderate to rough seas,
moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 300nm of lows,
180nm of troughs and cold fronts. Isolated showers remainder south of ridge [1]
and also southwest of cold fronts. Visibility reducing below 2nm in
precipitation.

WEATHER MELBOURNE

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