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 1100 UTC 21 December 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 210607UTC:
Area bounded by 50S141E 49S142E 49S145E 50S148E 50S141E.

Part 2 Situation at 0600 UTC
Refer to latest warnings.

Ridge [1] 27S153E to high 1020hPa near 35S159E to 35S170E. Forecast 28S153E
35S159E to high 1022hPa near 39S167E to 39S170E at 211800UTC and 29S152E
37S160E to high 1024hPa near 39S167E to 39S170E at 220600UTC.

Ridge [2] from high 1020hPa near 35S159E to 50S160E. Forecast from high 1022hpa
near 39S167E to 45S170E at 211800UTC and from high 1024hPa near 39S167E to
44S170E at 220600UTC.

Ridge [3] 41S129E 39S149E. Forecast 40S129E to high 1015hPa near 43S140E to
39S149E at 211800UTC and 39S129E 45S146E to high 1019hPa near 45S157E to
47S162E at 220600UTC.

Cold front [1] 41S161E 50S169E. Forecast 45S169E 48S172E 50S176E at 211800UTC,
then east of area.

Cold front [2] 42S140E 47S148E 50S149E. Forecast 41S151E 45S155E 50S159E at
211800UTC and 46S161E 50S168E at 220600UTC.

Cold front [3] approaching from west, forecast 47S129E 50S138E at 211800UTC and
44S129E 50S142E at 220600UTC.

Trough [1] 28S167E 31S170E, near stationary.

Trough [2] developing 38S147E 41S151E at 211800UTC, slow moving.

Trough [3] developing 29S132E to low 1004hPa near 33S134E at 211800UTC,
forecast 29S136E to low 1001hPa near 36S137E at 220600UTC.

Part 3 Forecast
Refer to latest warnings.

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

Remainder northeast of ridge [1]:
SE quarter winds 15/25 knots. Moderate to rough seas. Low to moderate swell.

Remainder east of ridge [2]:
W quarter winds tending SW quarter west of front [1]. Wind speeds 15/25 knots.
Moderate to rough seas. Low to moderate swell.

Remainder northwest of ridge [3], west of trough [2]:
SE quarter winds 15/25 knots becoming clockwise within 180nm of low. Winds
reaching 30 knots at times in far NW. Moderate to rough seas. Low swell.

Remainder south of ridge [3], west of ridges [1],[2], outside warning area:
N quarter winds 15/25 knots east of front [2] increasing to 20/30 knots by
220001UTC. W quarter winds 20/30 knots west of front [2] grading to 25/33 knots
within 100nm of warning area. Moderate to rough seas. Moderate swell increasing
to heavy south of 45S.

Rain areas, scattered showers and isolated thunderstorms within 300nm of cold
fronts and troughs [1] and [3]. Scattered showers remainder west of front [3].
Visibility reduced below 2nm in precipitation.

WEATHER MELBOURNE

The next routine forecast will be issued at 20:00 UTC Sunday.