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 25 September 2017
PLEASE BE AWARE
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
Refer to latest warnings for details of the area affected.
Melbourne Gale Warning 6.
New Zealand Gale Warning 434.
Part 2 Situation at 0600 UTC
Refer to latest warnings for boundary of affected area and type of weather
system.
Trough [1] 40S143E 41S151E 47S159E 50S162E. Forecast 31S154E 39S164E 46S170E at
260600UTC then weakening.
Trough [2] 41S159E 46S160E 50S170E. Forecast 46S166E 49S169E at 251800UTC then
weakening.
Cold front 30S153E 32S157E 38S161E 41S170E. Forecast 28S159E 30S166E 33S170E at
261200UTC.
Part 3 Forecast
Refer to latest warnings.
East of cold front, outside warning area:
Northwesterly quarter winds 20/30 knots within 360nm of front, increasing to
25/33 knots within 120nm of warning area. Rough to very rough seas. Low to
moderate swell.
Between cold front and trough [1], outside warning area:
Northwest quarter winds within 240nm east of trough [2], otherwise westerly
quarter. Wind speeds 20/30 knots, decreasing to 15/25 knots after 260000UTC.
Rough seas. Moderate swell.
Remainder:
Southwest quarter winds 20/30 knots within 420nm southwest of trough [1],
easing to 15/25 knots after 260000UTC.
Easterly quarter winds 15/25 knots north of 39S129E 36S140E, extending to north
of 39S129E 39S140E after 260000UTC.
West quarter winds 15/25 knots remainder south of 44S, increasing to 20/30
knots south of 47S.
Rough seas. Moderate swell increasing to moderate to heavy south of 46S.
Rain areas, scattered showers and isolated thunderstorms within 240nm of cold
front; also slowly extending into northwest of area after 251200UTC, reaching
north of 41S, west of 142E by 261200UTC. Scattered showers and isolated
thunderstorms within 240nm of troughs. Isolated showers remainder west of
trough [1]. Visibility reducing below 2nm in precipitation.
WEATHER MELBOURNE
The next routine forecast will be issued at 21:00 UTC Monday.
