South Eastern Area High Seas Forecast

IDY10210
SECURITE
 
HIGH SEAS FORECAST FOR METAREA 10
SOUTHEASTERN AREA: 28S/50S, 129E/170E
Issued by the Bureau of Meteorology National Meteorological and Oceanographic
Centre
FOR 24 HOURS COMMENCING 2300 UTC 17 APRIL 2014
 
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 171835UTC:
Area bounded by 44S151E 43S149E 40S150E 38S149E 36S152E 38S155E 40S157E 41S155E
43S154E 44S151E.
 

New Zealand Gale Warning 427 issued 171800UTC:
Low 979hPa near 40S 168E moving southwest 10kt.
1. Within 180 nautical miles of low in southeast semicircle: Clockwise 40kt.
Gale area moving southwest 10kt.
2. Outside area 1 and in a belt 240 nautical miles wide centred on a line 38S
179W 47S 172E 48S 162E: Clockwise 35kt. Gale area slow moving.
3. Outside areas 1 and 2 and within 180 nautical miles of low in northwest
semicircle: Clockwise 35kt easing next 6-12 hours. Gale area moving southwest
10kt.


 
Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] 37S150E 47S154E 50S157E. Forecast 34S150E 40S154E 46S153E 50S157E at
180600UTC and weakening by 181800UTC.

Ridge [2] entering area, forecast from high 1022 hPa near 37S130E to 50S135E at
1806001UTC and from high 1024 hPa near 37S134E to 50S142E at 181800UTC.

Cold front near 35S136E 41S142E 50S144E. Forecast 36S147E 40S151E 44S151E
50S149E at 180600UTC and near 33S153E 39S157E 41S156E at 181800UTC.

Low 978 hPa near 40S170E moving southwest 10 knots. Forecast 978 hPa near
41S166E at 180600UTC and 978hPa near 42S165E at 181800UTC.
 
Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges:
Variable winds below 20 knots. Slight to moderate seas. Moderate swell.

Remainder east of ridge [1], outside warning areas:
Clockwise winds around low, becoming NE quarter south of 47S. Wind speeds 15/25
knots increasing to 20/30 knots within 480nm of low and south of 47S, and
further increasing to 25/33 knots within 120nm of warning areas. Moderate to
rough seas. Moderate to heavy swell.

Remainder west of ridge [1] and east of cold front:
NW quarter winds 15/25 knots tending NW quarter east of 150E south of 40S. Winds
becoming 20/30 knots southwesterlies after 181200UTC. Moderate to rough seas.
Moderate to heavy swell.

Remainder between ridge [2] and cold front: 
Southwesterly winds 20/25 knots with moderate to rough seas and moderate swell.


Remainder west of ridge [2], outside warning area:
NW quarter winds 20/30 knots. Winds increasing to 25/33 knots within 120nm of
warning area. Moderate to rough seas. Heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 420nm of low.
Scattered showers remainder away from ridges and within 180nm of front.
Visibility reducing below 2nm in precipitation.
 
WEATHER MELBOURNE
 
The next routine forecast will be issued at 0800  UTC 18 April 2014