IDY10220
SECURITE
High Seas Forecast for Western METAREA 10
12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E
Issued by the Australian Government Bureau of Meteorology
For 24 hours commencing 2300 UTC 7 January 2026
Part 1 Warnings
Refer to latest warnings for details of the area affected.
Gale Wind Warning issued by TCWC Melbourne for Tropical Cyclone 'Jenna'.
Melbourne Gale Warning 4.
Part 2 Situation at 071800 UTC
Tropical Cyclone 'Jenna' 994hPa near 18.3S91.2E, forecast Tropical Cyclone
'Jenna' 997hPa near 18.1S90.0E at 080000UTC, then moving west out of area.
Trough 37S108E 42S112E to low 998hPa near 44S112E. Forecast to become cold
front 35S121E 40S124E to low 997hPa near 44S122E at 081200UTC, then near
33S127E 38S130E to low 986hPa near 44S130E at 090000UTC.
Part 3 Forecast
Refer to latest warnings for details of the area affected.
West of line 18S096E 21S097E 24S092E, outside warning area:
Southeasterly quarter winds turning clockwise within 90nm of Tropical Cyclone
"Jenna". Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy
swell.
East of line 22S109E 28S109E 34S115E:
Southeasterly quarter winds 20/30 knots. Rough seas. Low to moderate swell.
South of line 43S097E 38S102E 34S121E 43S129E:
Westerly quarter winds, shifting southwesterly quarter west and south of trough
and southwest of low, and turning clockwise within 180nm of low. Clockwise
winds extending to within 300nm of low by 080000UTC. Wind speeds 20/30 knots.
Rough seas. Low to moderate swell.
West of line 40S080E 50S100E: Northwesterly winds below 25 knots increasing to
20/33 knots from 080000UTC. Rough to very rough seas. Low to moderate swell.
Remainder:
Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell.
Rain areas, scattered showers and isolated thunderstorms mostly within 420nm of
Tropical Cyclone 'Jenna', within 180nm of trough, and within 240nm of low.
Heavy at times within 300nm of Tropical Cyclone 'Jenna' in southeastern
quadrant, and within 60nm of low. Visibility reducing below 2nm in
precipitation.
Please be aware
Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger
than the forecast, and stronger still in squalls and thunderstorms. Maximum
waves can be twice the forecast height.
WEATHER MELBOURNE
The next routine forecast will be issued at 08:00 UTC Thursday.
