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26 December 2011

Satellite Image: Cyclone Grant, Northern Australia

Infrared image courtesy of the Japan Meteorological Agency. Blue Marble surface image courtesy of NASA.

Satellite Notes for the 0000UTC chart on 26 December 2011
Issued at 12:29 pm EDT Monday on 26 December 2011

Extensive cloud cover over Northern parts of the Northern Territory and Queensland are associated with Tropical Cyclone 'Grant' and active monsoon trough, causing scattered showers and storms over the Top End and Cape York Peninsula.

A trough that extends from Central WA through Northern South Australia to the southeast coast is responsible for the patchy cloud and isolated showers and storms over southeastern parts of the country.

Cloud associated with a weak cold front is crossing western Tasmania. Low cloud can be seen along southeast coast due to the onshore wind flow.

Coastal Waters Warning issued by Darwin for TC Grant

Australian Government Bureau of Meteorology
Northern Territory

Coastal Waters Wind Warning
For waters from Cape Fourcroy to the Queensland border
Issued at 10:53 am CST on Monday 26 December 2011

Synoptic Situation
At 9:30 am CST Tropical Cyclone Grant was located over land within 30 nautical
miles of 12.4 S 132.6 E about 25 nautical miles west southwest of Oenpelli and
100 nautical miles east of Darwin with central pressure 990 hectopascals,
moving south at 5 knots.

The low is expected to weaken below cyclone intensity in the next 6 hours.

Centre forecast to be within 90 nautical miles of 13.7 S 133.8 E about 95
nautical miles south southeast of Oenpelli at 9:30 am CST Tuesday.

Gale Warning
Within 50 nautical miles in NE quadrant
and within 45 nautical miles in NW quadrant
Clockwise winds 34/40 knots, easing below 34 knots in the next 3 to 6 hours.
Scattered squalls to 45 knots. Seas to 4 metres.

Strong Wind Warning
Elsewhere from Cape Fourcroy to the Queensland border....
Between Cape Fourcroy and Cape Wessel...

Northwest/north winds 20/33 knots. Scattered squalls to 45 knots. Seas 3 metres
on a 2 metre northwest swell.

Between Cape Wessel and the Queensland border...

Northeast/northwest winds 20/30 knots from early Tuesday. Seas rising to 3
metres on a 2 metre northwest swell.

These conditions should persist for another 48 hours.

The next warning will be issued by 2:00 PM CST.

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.

-------------------------- End of warning ----------------------------
For coastal waters forecasts call 1900 969 923 (cost 77c per minute, incl GST,
more from mobiles or payphones)

Media: TOP PRIORITY (Broadcast on receipt and repeated at least hourly.)
Media: PRIORITY (Broadcast as soon as possible, but not later than one hour
after receipt. Repeat in normal news and weather.)

- Australia Bureau of Meteorology