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Area of Convection Near Australia

February 16th, 2009 Category: Tropical Cyclones

Area of convection near Australia - February 16th, 2009

Area of convection near Australia - February 16th, 2009

Convective area - enhanced image

Convective area - enhanced image

The area of convection previously located near 18.0S 116.0E is now located near 18.0S 115.0E, approximately 255 nautical miles north-northeast of Learmonth, Australia.

Animated infrared satellite imagery and an AMSU image depict a monsoon depression low pressure area with multiple fully-exposed low-level circulation center (LLCC) rotating around a centroid.

Imagery also shows a persistent area of deep convection along the convergent southern periphery of the low.

A QUIKSCAT image indicated 15 to 20 knot core winds with stronger (25 to 30 knot) winds along the southern periphery.

The Learnmonth radar shows weak banding over the southeast and south quadrants with moderate to heavy thunderstorms just north of Exmouth.

The broad LLCC is located north of the subtropical ridge axis and is under strong easterly vertical wind shear.

Maximum sustained surface winds are estimated at 25 to 30 knots. Minimum sea level pressure is estimated to be near 998 mb.

The LLCC is expected to remain within an unfavorable environment for the next 24 hours, therefore, the potential for the development of a significant tropical cyclone within the next 24 hours remains poor.

source JTWC