Weekly rainfall wrap + 8 day rain outlook, 4 Apr 2018

Grain Central, April 4, 2018


For today’s 14-day rainfall outlook – scroll to bottom of article

The remnants of ex-tropical cyclone Nora, embedded on a surface trough, produced moderate falls in the northern tropics. Tropical cyclone Iris formed in the Coral Sea, and is generating moderate to locally heavy falls about the north tropical and central Queensland coasts.

Past seven days: At the beginning of the week, broad areas of low pressure extended across the northern tropics, with the remnants of ex-tropical cyclone Nora lingering about the base of Cape York Peninsula. Showers and storms produced moderate falls in the northern interior and north tropical coast of Queensland, the Gulf Country, about the northern Top End, Carpentaria coast, and central parts of the Northern Territory, and in the north Kimberley coast and Northern Interior in Western Australia. A moist onshore flow generated showers along Queensland’s southeast coast and adjacent inland districts, and in northeastern New South Wales.

From the middle of the week, a surface trough extended from the Pilbara to the Top End while a trough near the west coast in Western Australia moved slowly east. Showers and storms formed along and near the surface troughs, with moderate falls recorded about the Kimberley, east Pilbara and inland Gascoyne along with light to moderate falls in parts of the South West Land Division.

A tropical low in the central Coral Sea, embedded in a surface trough at the start of week, moved slowly northwest and intensified to tropical cyclone Iris well offshore from the north tropical coast in Queensland shortly after tracking south, then southeast at the end of week. Onshore showers associated with Iris produced moderate to locally heavy falls about the north tropical and central coasts of Queensland.

At the end of the week, an inland surface trough triggered storms with moderate rainfall totals in southwest Queensland.

In the south, a trough and associated cloudband produced light to moderate rainfall to the north of the Sydney coast, while a series of weak cold fronts brought moderate falls to western Tasmania throughout the week.

Rainfall totals in excess of 100 mm were recorded in pockets of Queensland’s far northeast, north tropical and central coasts. The highest weekly rainfall total was 197 mm at Hawkins Creek on the north tropical coast of Queensland.

Rainfall totals between 50 mm and 100 mm were recorded about the tip of the Cape York Peninsula, the north tropical and central coasts of Queensland, about the northwest coast of the Top End in the Northern Territory, in small parts of the Kimberley coast in Western Australia, and in the Western District coast in Tasmania.

Rainfall totals between 10 mm and 50 mm were recorded in the north, and pockets of the west of Western Australia; most of the northern half of the Northern Territory; the Gulf Country, Cape York Peninsula, east coast and southwest of Queensland; small areas of northeastern and the central coast of New South Wales, and western Tasmania.

Little or no rainfall was recorded across the interior and southeast and along the west coast of Western Australia, the southern half of the Northern Territory, South Australia, western and southern Queensland, most of New South Wales away from the east coast, Victoria and eastern Tasmania.

Highest weekly totals

New South Wales and Australian Capital Territory

61 mm Wyong (Mount Elliot)

51 mm Murwillumbah

47 mm Green Pigeon (Morning View)


7 mm Moe Gippsland Water

6 mm Jindivick

5 mm Wilsons Promontory Lighthouse


197 mm Hawkins Creek

170 mm Mount Jukes

166 mm Innisfail, Cardwell Range

Western Australia

70 mm Kalumburu

61 mm Truscott

60 mm Siddins Creek

South Australia

4 mm Parawa (Sharon) Parawa

3 mm Robe


153 mm Mount Read

72 mm Queenstown (South Queenstown)

53 mm Zeehan

Northern Territory

101 mm Pirlangimpi Airport

91 mm Jabiru Airport

54 mm Shoal Bay

More weekly rainfall totals:

Source: BOM

8 Day rainfall outlook:



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