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 2 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 021800UTC:
Area bounded by 50S115E 50S145E 48S144E 48S116E 50S115E.

Melbourne Gale Warning 5 issued 021901UTC:
Area bounded by 26S155E 29S155E 34S152E 36S154E 36S160E 28S160E 26S155E.

New Zealand Gale Warning 057 issued 021800UTC:
In a belt 180 nautical miles wide centred on a line 40S169E 36S174E 36S180:
Westerly 35kt at times. Gale area moving east 15kt.

New Zealand Gale Warning 058 issued 021800UTC:
Slow moving front 46S162E 50S164E 52S166E.
Within 180 nautical miles east of front: Northwest 35kt developing next 6-12
hours.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 28S164E 38S159E 45S163E 50S170E, forecast 28S169E 38S165E 44S170E
50S176E at 030600UTC and 29S176E 38S168E at 031800UTC.

Ridge [2] from high 1028 hPa near 37S122E to 40S129E 45S135E 50S134E, forecast
from high 1027 near 36S129E to 39S137E 44S145E 50S143E at 030600UTC and 38S129E
to high 1028 hPa near 36S133E to 40S151E 42S155E 50S154E at 031800UTC.

Trough [1] 28S151E 30S152E 36S151E to low 1005 hPa near 39S149E to 42S149E,
forecast 26S154E 30S157E 33S157E to low 1000 hPa near 35S156E at 030600UTC and
28S161E 31S163E to low 998 hPa near 33S162E to 40S164E at 031800UTC.

Cold front 42S149E 46S154E 50S157E, forecast 40S156E 44S162E 50S166E at
030600UTC and 40S164E 43S170E at 031800UTC.

Trough [2] 47S128E 50S127E, forecast 47S138E 50S137E at 030600UTC and 44S146E
47S149E 50S147E at 031800UTC.

Trough [3] developing near 35S151E 36S155E at 030600UTC and 31S153E 34S159E
34S162E at 031800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridge[1], 120nm of ridge [2] and 240nm of high:
Variable winds below 20 knots tending W quarter 10/20 knots south of 40S.
Slight to moderate seas. Moderate to heavy swell.

Remainder west of west of ridge [2], outside warning area: W quarter winds
tending NW quarter east of trough [2]. Wind speeds 15/25 knots, increasing to
20/30 knots south of 43S and grading to 25/33 knots within 120nm of warning
area. Moderate to rough seas. Moderate swell.

Remainder west of cold front and trough [1]:
Clockwise winds within 240nm of low, SW quarter winds remainder west of cold
front tending S quarter north of 43S, shifting W quarter north of trough [3].
Winds speeds 20/30 knots reaching 25/33 knots at times within 120nm south of
trough [3] and low. Winds speeds easing 15/25 knots west of 140E by 030600UTC
and 150E by 031800UTC. Moderate to rough seas, moderate swell heavy at times
west of 135E.

Remainder east of cold front and trough [1], outside warning areas:
Clockwise winds 20/30 knots within 240nm of low tending N/NW north of 41S and
becoming NW quarter east of cold front with wind speeds easing 15.25 knots
within 120nm of 41S, west of ridge [1]. Winds becoming SW quarter 20/30 knots
remainder east of ridge [1]. Wind speeds grading 25/33 knots within 120nm of
warning areas. Moderate to rough seas, moderate swell increasing to moderate to
heavy swell east of 158E.

Rain areas, scattered showers and isolated thunderstorms within 240nm of low,
180nm of troughs and cold front and west of ridge [2] south of 43S. Isolated
showers remainder east of ridge [1] and also southwest of cold front.
Visibility reducing below 2nm in precipitation.

WEATHER MELBOURNE

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