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 21 April 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 5 issued 211844UTC:
Area bounded by 39S157E 39S153E 37S150E 35S150E 33S152E 36S152E 39S157E.

Melbourne Gale Warning 4 issued 211829UTC:
Area Bounded by 44S108E 41S118E 45S119E 50S133E 50S097E 44S108E.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 34S128E to high 1034 hPa near 40S140E to 45S152E 47S161E 48S170E ,
forecast 35S129E to high 1026 hPa near 40S139E to 45S152E 46S161E 49S170E at
220600UTC and 31S129E 39S136E 45S147E 47S163E 44S170E at 221800UTC.

Ridge [2] 28S164E 35S170E, forecast 28S167E 35S170E at 220600UTC and 28S169E
35S170E at 221800UTC.

Ridge [3]47S161E 50S165E, weakened.

Trough/cold front [1] 28S156E to low 1009 hPa near 33S152E to 36S152E 39S167E
42S170E, forecast 28S155E to low 1008 hPa near 33S152E to 36S153E 38S163E at
220600UTC and 28S155E to low 1010 hPa near 33S152E to 38S154E 41S163E at
221800UTC.

Cold front [2] 43S129E 50S140E, forecast 41S129E 50S143E at 220600UTC and
weakening near 36S124E 40S129E 50S144E at 221800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and 240nm of high:
Variable winds below 20 knots tending E/NE 10/20 knots along ridge [2]. Slight
to moderate seas. Low to moderate swell, with moderate swell near ridges [2].

Remainder north and east of ridge [1], outside warning area:
Variable winds below 20 knots east of 145E with slight to moderate seas and low
to moderate swell. Clockwise winds 25/33 knots within 300nm of low and 120nm of
warning area. Winds tending NE quarter 15/25 knots remainder east of trough and
E quarter 20/30 knots remainder. Moderate to rough seas. Wind speeds easing to
10/20 knots with seas abating slight to moderate remainder south of line
34S169E 40S160E 40S148E. Moderate to heavy swell.

Remainder south and west of ridge, outside warning area:
NW quarter wind 20/30 knots easing 15/25 knots and shifting SW quarter within
60nm of weakening cold front [2]. Wind speeds grading to 25/33 knots within
120nm of warning areas. Moderate to rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 360nm of cold
fronts, trough and low. Scattered showers remainder west of front [2] tending
to rain areas with isolated thunderstorms in the far west. Isolated showers
remainder away from ridge. Visibility reducing below 2nm in precipitation.

WEATHER MELBOURNE

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