Saturday 03 JAN 2004

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2004

Dec

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Nov

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Oct

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Sept

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August

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July

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June

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May

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April

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March

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February

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January

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Heat continues
Cold water greets Sydney swimmers
Big swells continue on SE QLD coast

Above: Maximum temperatures (left) and departures from normal (right)
Below: Minimum temperatures (left) and departures from normal (right)
Bottom: rainfall for the week ended 9am today. BoM

Heat continues

The heatwave that has gripped the southern two-thirds of the continent since Christmas Eve continued today, with a huge area of the continent (shaded brown or dark red in the top left map) recording top temperatures above 42°. Cooler southeasterlies gave the WA South Coast some relief, while the passage of a weak front kept TAS temperatures closer to normal.

The highest temperatures were around the meeting corners of NSW, QLD, SA and NT. Birdsville, Oodnadatta and Marree all recorded maxima just over 47, while in the NT Jervois reported 46.0 and in NSW Tibooburra reached 44.5. The temperatures recorded in this area today and for the past two days have been within 2 or 3 degrees of the all-time records.

Night time temperatures across inland NSW, QLD and SA have become increasingly oppressive as humidity has increased, with a slow diffusion of the moist airmass that gave Central Australia heavy rain before New Year. A strong upper ridge continues to suppress any welcome thunderstorm downdrafts, and a very weak surface pressure pattern is keeping winds light or calm. The combination of these factors has slowed cooling rates after sunset, and those areas shaded yellow to pink in the minimum temperature map (centre left) that had minima between 24 and 33 degrees actually experienced temperatures in the 30s to low 40s for most of the dark hours.

The dominant upper ridge has also produced a virtually rainless week over an unusually broad area of the continent. Apart from the intrusion of rain across the Centre and western SA at the end of December, very little has been recorded across the southern two-thirds of the country.

Cold water greets Sydney swimmers

Classic hot Christmas/New Year holiday weather in Sydney has filled the beaches, but swimmers are not staying long in the water. Water temperatures have been up to 5° below the average, with 16.5 recorded at Bronte and 18 at Clovelly, yet the Manly Hydraulics Lab buoy, 13km east of Manly, has reported more seasonable tempertures varying between 20.8 and 22 through the day, temperatures confirmed by satellite imagery. The cause of the colder inshore waters has been local upwelling after days of persistent northerlies or northeasterly sea breezes. Ben Matson, a surf forecaster with coastalwatch.com, told the Sydney Morning Herald the upwelling effect displaced the ocean's surface water with colder, deeper water. "People associate northerlies with warm weather, but it actually brings colder water temperatures. We need a solid round of southerlies," he said.

Big swells continue on SE QLD coast

On the QLD Gold Coast, it was big waves rather than cold water keeping swimmers on the beaches. A High in the central Tasman Sea and a Low drifting slowly west into the Coral Sea from New Caledonia have maintained a strong east to southeasterly flow across southern QLD for nearly a week, building a consistent 3m swell.

News sources: SMH, Courier-Mail

National weather extremes for today

Data provided by the Bureau of Meteorology

Records set this day: (none known)

Quality control note: Data is final. It includes late-received rainfall data and has been subject to BoM quality control checks.
Data is as received at 22:17EST, 27/10/2004.

Weather observations for today
Noteworthy  Weather         Capital  Cities         Regional  Cities       Alpine  Stations
Bureau of Meteorology Rainfall Bulletins and Weather Notes

Hottest
Highest maximum temperature>Greatest variation above normal maximum Highest minimum temperatureGreatest variation above normal minimum

47.5 BIRDSVILLE AIRPORT Channel Country QLD
47.2 MARREE NE Pastoral SA
47.2 BIRDSVILLE POLICE STATION Channel Country QLD
47.1 OODNADATTA AIRPORT NE Pastoral SA
46.4 NYANG STATION W Gascoyne WA
46.4 BEDOURIE POLICE STATION Channel Country QLD

+14.5   43.0 CEDUNA AMO W Agricultural SA
+13.8   43.0 STREAKY BAY W Agricultural SA
+12.4   40.5 CLEVE W Agricultural SA
+11.9   43.8 PORT PIRIE BHAS Lower North SA
+11.9   42.0 ROSEDALE (TURRETFIELD RESEARCH CENTRE) Adelaide/Lofty SA

33.4 COOBER PEDY AIRPORT NW Pastoral SA
33.0 ANDAMOOKA NW Pastoral SA
33.0 ROXBY DOWNS (OLYMPIC DAM AERODROME) NW Pastoral SA
32.9 MEEKATHARRA AIRPORT E Gascoyne WA
32.9 BIRDSVILLE AIRPORT Channel Country QLD

+12.0   33.0 ANDAMOOKA NW Pastoral SA
+11.0   31.4 LEIGH CREEK AIRPORT NE Pastoral SA
+10.9   30.5 ARKAROOLA NE Pastoral SA
+10.9   28.5 HAWKER Upper North SA
+9.6   28.9 WOOMERA AERODROME NW Pastoral SA

Coldest
Lowest maximum temperatureGreatest variation below normal maximum Lowest minimum temperatureGreatest variation below normal minimum

12.3 MOUNT READ W Coast TAS
14.6 MOUNT WELLINGTON Southeast TAS
15.3 MAATSUYKER ISLAND LIGHTHOUSE Southeast TAS
17.4 TASMAN ISLAND Southeast TAS
17.5 CAPE BRUNY LIGHTHOUSE Southeast TAS

-4.8   32.3 WYNDHAM N Kimberley WA
-4.8   32.6 WARMUN E Kimberley WA
-4.8   23.9 ONGERUP Cent Wheatbelt WA
-4.7   29.5 MENINDEE POST OFFICE Lower Darling NSW
-4.3   26.9 BALLADONIA Eucla WA

3.8 MOUNT WELLINGTON Southeast TAS
3.9 MOUNT READ W Coast TAS
6.0 HARTZ MOUNTAIN (KEOGHS PIMPLE) Southeast TAS
7.0 SHANNON Lower West WA
7.4 LIAWENEE Central Plateau TAS

-8.1   11.9 GOONDIWINDI AIRPORT Darling Downs E QLD
-6.0   8.2 WINDY HARBOUR Lower West WA
-5.9   13.2 KAIRI RESEARCH STATION N Coast--Barron QLD
-5.3   8.3 ALBANY AIRPORT Lower West WA
-5.1   10.5 COROWA AIRPORT Riverina E NSW

Wettest Major City Extremes
Todays highest rainfall totals for the 24 hours to 9am. It includes the top 5 totals nationally followed by all reported falls of 50mm or more.

66.8 HORN ISLAND N Peninsula QLD
65.8 COCONUT ISLAND N Peninsula QLD
57.2 PUNSAND BAY N Peninsula QLD
52.0 KALALA N Rivers NT
50.0 PORT KEATS AERO N Rivers NT

NORTHERN TERRITORY
    N Rivers
52.0 KALALA
50.0 PORT KEATS AERO

QUEENSLAND
    N Peninsula
66.8 HORN ISLAND
65.8 COCONUT ISLAND
57.2 PUNSAND BAY

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 32.1 -1.3 24.8 -1.5 26.6
PERTH AIRPORT 36.1 +4.6 17.2 +0.3 0.0
ALBANY AIRPORT 22.1 -2.8 8.3 -5.3 0.0
KALGOORLIE-BOULDER AIRPORT 34.9 +1.3 19.1 +0.9 0.0
DARWIN AIRPORT 31.9 +0.1 26.1 +1.3 0.0
ALICE SPRINGS AIRPORT 43.0 +6.8 27.8 +6.5 0.0
ADELAIDE (KENT TOWN) 39.6 +10.7 22.9 +6.0 0.0
MOUNT GAMBIER AERO 27.2 +2.1 11.9 +0.9 0.0
CAIRNS AERO 31.1 -0.3 21.5 -2.1 0.0
TOWNSVILLE AERO 32.3 +1.0 23.0 -1.2 0.0
ROCKHAMPTON AERO 33.4 +1.5 22.0 0.0 0.0
AMBERLEY AMO 31.7 +0.6 20.4 +0.8 0.0
BRISBANE AERO 29.1 22.0 0.0
ARMIDALE AIRPORT AWS 31.9 10.3 0.0
COFFS HARBOUR MO 28.7 +1.9 18.3 -1.1 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 22.3 -3.3 18.2 -0.9 0.0
SYDNEY (OBSERVATORY HILL) 27.0 +1.2 20.6 +2.0 0.0
PROSPECT DAM 31.5 +3.5 18.0 +0.5 0.0
WOLLONGONG UNIVERSITY 27.3 +1.7 17.3 -0.6 0.0
CANBERRA AIRPORT 36.9 +9.1 18.3 +5.3 0.0
WAGGA WAGGA AMO 40.8 +9.4 17.6 +1.5 0.0
MILDURA AIRPORT 40.9 +8.8 18.2 +1.7 0.0
EAST SALE AIRPORT 26.0 +0.7 15.5 +2.8 0.0
MELBOURNE REGIONAL OFFICE 29.8 +4.0 17.5 +3.3 0.0
LAVERTON RAAF 28.9 +3.3 17.1 +3.5 0.0
BALLARAT AERODROME 31.5 +6.6 10.3 -0.5 0.0
LAUNCESTON AIRPORT 24.5 +1.3 12.5 +2.3 0.0
HOBART (ELLERSLIE ROAD) 21.5 -0.1 14.1 +2.3 0.0

Downpours Gales & Gusts
High rainfall for periods of 6 hours or less. Highest wind gusts above 89km/h (storm force) or mean wind above 62km/h (gale force). Wind direction and mean windspeed shown in brackets.
WESTERN AUSTRALIA
    N Kimberley
TROUGHTON ISLAND
1.8mm in 1 min to 00:22 108.0mm/h
    Goldfields
SOUTHERN CROSS AIRFIELD
9.6mm in 13 min to 19:13 44.3mm/h
9.4mm in 47 min to 20:00 12.0mm/h
19.0mm in 1 hr to 20:00 19.0mm/h
28.0mm in 3 hr to 21:00 9.3mm/h
NORTHERN TERRITORY
    N Plateau
YULARA AERO
5.8mm in 16 min to 20:14 21.8mm/h
QUEENSLAND
    N Peninsula
COCONUT ISLAND
6.8mm in 11 min to 05:00 37.1mm/h
18.0mm in 3 hr to 06:00 6.0mm/h
21.0mm in 3 hr to 09:00 7.0mm/h
HORN ISLAND
27.6mm in 1 hr to 04:00 27.6mm/h
10.8mm in 1 hr to 05:00 10.8mm/h
45.0mm in 3 hr to 06:00 15.0mm/h
    Gulf Country
KOWANYAMA AIRPORT
9.0mm in 12 min to 17:00 45.0mm/h
11.6mm in 1 hr to 17:00 11.6mm/h

QUEENSLAND
    Upper Carpentaria
RICHMOND AIRPORT : 85(170/ 72 ) at 13:26