WOAU70 AMMC 172358

IDY21091

40:2:1:04:55S100E25060:01:00

SECURITE

HIGH SEAS WEATHER WARNING FOR METAREA 10

ISSUED BY THE AUSTRALIAN GOVERNMENT BUREAU OF METEOROLOGY

AT 2358UTC 17 SEPTEMBER 2025



STORM FORCE WIND WARNING 11 FOR WESTERN AND SOUTHEASTERN AREAS



SITUATION AT 180000UTC

VIGOROUS FLOW ASSOCIATED WITH TROUGH 37S111E 40S115E 42S114E.

FORECAST 37S117E

39S120E 41S120E AT 180600UTC, WEAKENING TROUGH 37S122E TO DEVELOPING

LOW 993HPA

NEAR 42S125E AT 181200UTC, THEN JUST LOW 987HPA NEAR 42S130E AT

181800UTC, AND

LOW 985HPA NEAR 43S135E AT 190000UTC.



AREA AFFECTED

BOUNDED BY 42S109E 37S108E 37S137E 42S140E 45S133E 41S122E 42S109E.



FORECAST

WESTERLY QUARTER WINDS 30/40 KNOTS WITHIN 300NM WEST OF TROUGH

INITIALLY, THEN

NORTHWESTERLY QUARTER WINDS 30/40 KNOTS WITHIN 180NM EAST OF TROUGH

SHIFTING

SOUTHWESTERLY QUARTER 30/40 KNOTS WITHIN 120NM WEST OF TROUGH FROM

180600UTC.

CLOCKWISE WINDS 30/40 KNOTS WITHIN 360NM OF LOW IN NORTHERN

SEMICIRCLE FROM

181200UTC, INCREASING TO 40/55 KNOTS WITHIN 120NM OF LOW IN

NORTHWESTERN

QUADRANT BY 181800UTC. ROUGH TO VERY ROUGH SEAS, RISING TO VERY HIGH

IN STORM

FORCE WINDS. MODERATE TO HEAVY SWELL.



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.





THE NEXT ALERT WILL BE ISSUED BY 0700 UTC 18 SEPTEMBER 2025=