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 23 August 2016

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
New Zealand GALE WARNING 548 issued 231800UTC:
In a belt 120 nautical miles wide centred on a line 46S171E 48S168E 51S164E:
Northeast 35kt developing next 6 hours.
Gale area then slow moving.

New Zealand GALE WARNING 549 issued 231800UTC:
Low 995hPa near 42S163E moving east southeast 10kt.
1. In a belt 120 nautical miles wide centred on a line 40S168E 42S165E 44S162E:
Northeast 35kt. Gale area moving east southeast 15kt.
2. Outside area 1 and within 120 nautical miles of low in northwest semicircle:
Clockwise 35kt developing next 6 hours. Gale area moving east southeast 10kt.

Part 2 Situation at 1800 UTC
Refer to latest warnings.

Ridge [1] from 33S162E to high 1018 hPa near 40S138E 50S135E. Forecast from
34S167E 38S158E to high 1013 hPa near 40S137E to 44S132E at 240600UTC and from
37S170E to high 1012 hPa near 40S161E to 40S155E 40S154E 44S136E at 241800UTC.

Ridge [2] 48S129E 50S135E. Forecast 42S129E 50S139E at 240600UTC and 39S129E
50S145E at 241800UTC.

Cold front/trough [1] from 28S154E 33S163E 39S166E to low [2] 995 hPa near
42S163E to 48S162E 50S158E. Forecast from 28S154E 30S156E 32S164E 38S173E to
low [2] 997 hPa near 42S167E to low [3] 1001 hPa near 50S153E at 240600UTC and
from 28S157E to low [1] 992 hPa near 33S155E 36S174E to low [2] 1000 hPa near
44S167E to 49S163E to low [3] 998 hPa near 49S154E to 50S154E at 241800UTC.

Trough [2] 31S131E 39S132E 44S137E. Forecast 33S136E 37S129E at 240600UTC and
32S135E 33S129E at 241800UTC.

Part 3 Forecast
Refer to latest warnings.

Within 180nm of ridges and 240nm of high:
Variable winds below 20 knots. Slight to moderate seas. Low to moderate swell.

Remainder east of cold front/trough [1], outside warning areas:
N quarter winds, turning clockwise within 240nm of lows. Wind speeds 20/30
knots, increasing to 25/33 knots within 180nm of warning areas. Moderate to
rough seas. Moderate swell.

Remainder west of ridge [2]:
W quarter winds 15/25 knots, increasing to 20/30 knots southwest of 47S129E
50S141E after 241200UTC. Moderate to rough seas. Moderate to heavy swell.

Remainder north of ridge [1] and east of 150E:
SE quarter winds, tending clockwise within 360nm of low [1]. Wind speeds 15/25
knots, increasing to 20/30 knots north of 38S after 240900UTC and reaching
25/33 knots within 240nm of low [1] after 241200UTC. Moderate to rough seas.
Low to moderate swell.

Remainder north of ridge [1] and west of 150E:
S quarter winds 10/20 knots with slight to moderate seas, turning SW quarter
15/25 knots northwest of trough [2]. Moderate swell.

Remainder south of ridge [1]:
SW quarter winds 15/25 knots, tending clockwise 20/30 knots within 360nm of
lows. Moderate to rough seas. Moderate swell.

Rain areas, scattered showers, and isolated thunderstorms within 360nm of cold
front/troughs and lows. Isolated showers over the remainder. Visibility
reducing to below 2nm in precipitation.

WEATHER MELBOURNE

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