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Friday 29 December 2000

Another wintry blast for Tasmania
Heavy rain brings local flooding to Qld north and central coasts
Below: 300hPa jetstream at 11am EDST today. FNMOC

A further surge of cold southern air swept across Tasmania this morning, bringing further snow to the highlands and wintry galeforce winds to the Sydney to Hobart Yacht Race frontrunners approaching Hobart. A small low circulation developed on the front, whipping winds up to 130km/h on the Tasman Peninsula, while yachts reported winds around 90km/h as they crossed Storm Bay. A succession of deep Southern Ocean lows and active cold fronts has swept across Tasmania for the past week, with the airflow turning progressively colder and more southerly. Today, the jet stream (left) turned almost due south, with a fetch from nearly 70S, close to the Antarctic coastline.

A complex trough system brought heavy rain and local flooding to the Queensland central coast this morning and the area between Proserpine and Townsville late this afternoon. Proserpine recorded 91mm between midnight and 6am then a further 57mm between 4pm and 6pm. In Townsville, the airport recorded 21mm between 3 and 9pm, but unofficial reports of 50 to 100mm were received from the suburbs, including one report of 117mm in 45 minutes to 5.15pm at Bluewater, just north of the city centre where some limited flash flooding was reported. Parts of the Bruce Highway near Townsville have been closed, while the Flinders and Barkly Highways to the west near Mount Isa, Longreach, and Richmond remain inundated after the heavy rain of the past few days. The coastal rain has been caused by the monsoon trough dipping southeast from the Gulf of Carpentaria to the Queensland central coast where it links with a southern trough now making its way across the Tasman Sea. A ridge pushing up the Queensland coast behind the southern trough is intensifying a moist southeast flow, while converging air into the trough is providing the uplift to produce areas of heavy rain.

Today's highest rainfall totals for the 24 hours to 9am

115.0 Banksia Station Marlborough Qld
111.4 Yaamba Qld
111.0 Proserpine AP Qld
101.4 Smoky Cape LH NSW

Other heavy falls in Qld and NSW:
100.0 Mt McConnell Charters Towers Qld
98.0 Coffs Harbour AP NSW
98.0 Hecate Proserpine Qld
91.0 Doongara Charters Towers Qld
90.4 Roma Peak Bowen Qld
90.0 Yeppoon AWS Qld

High falls for other periods:

Western Australia:
Kalumburu: 37mm in 3h to 6pm
Northern Territory:
Batchelor:
34mm in 2h to 8pm
Queensland:
Horn Island:
115mm in 6h to 6pm
Mingela: 85mm in 6h to 6pm
Proserpine AP: 91mm in 6h to 6am then 57mm in 2h to 6pm
Bowen AP: 59mm in 3h to 9am
Samuel Hill: 50mm in 2h to 2am
Yeppoon: 84mm in 9h to 6am
Moranbah: 85mm in 15h to 6am
Rockhampton AP: 69mm in 9h to 6am
Gladstone MO: 55mm in 5h to 5am
New South Wales:
Smoky Cape LH:
125mm in 15h to noon
Port Macquarie AP: 69mm in 9h to 3pm
Port Macquarie city: 50mm in 6h to 3pm
Montague Island: 24mm in 3h to 9pm

Today's highest & lowest temps

Wind (mean refers to the average windspeed over 10 minutes; gust is the highest speed recorded):

Keogh's Pimple Hartz Mountains Tas: gusts to 113km/h at midnight this morning
Mt Wellington summit Tas: mean 96km/h at 12.06am and gusts to 119km/h at 12.30am

Other extremes

Flood peaks:
Bulloo at Autumnvale Qld:
5.36m early this morning with minor flooding
Bulloo at Thargomindah Qld: 5.51m this evening with minor to moderate flooding
Flinders at Richmond Qld: 7.60m today with moderate flooding

Records set this day

.

Maximum Minimum
45.6 Port Hedland AP WA
45.6 Roebourne WA
45.0 Marble Bar WA
29.6 Wittenoom WA
2.3 Mt Wellington Tas -3.2 Charlotte Pass NSW
-3.0 Mt Wellington Tas

Greatest variations from normal

Maximum Minimum
+10.4
35.0 Eucla AP WA
+6.9
21.0 Norseman PO WA
-9.4
25.5 Clermont Qld
-9.4
20.2 Kingaroy Qld
-8.5
-0.2 Omeo Vic
-8.4
11.8 Alice Springs AP NT

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