Monday 28 JUL 2003

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2003

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Another cold morning in NSW, QLD
Another wintry blast arrives in SE Australia 06Aug03
Surprise showers in the NT dry season

Above: An active cold front crosses the SA southeast coast late this afternoon followed by a strong cold southwesterly airstream. These surface charts are for 4am, 10am, 4pm and 10pm EST. BoM.
Right: Minimum temperature anomalies this morning. BoM.
Below:
IR satellite hourly images from 9am to midnight. The cloudband ahead of the front is relatively weak and thin, resulting in little precipitation. Speckled cloud following the front shows the cold airfield, but most cells are grey, indicating relatively warm cloudtops of insignificant height. Weatherzone, BoM
. (GMS-5 backup with GOES-9 operated by the joint effort of JMA and US NOAA NESDIS over the Western Pacific)

The cold, dry airmass left over from last week's wintry weather, coupled with light winds and clear skies overnight, gave much of NSW and southeastern QLD another very cold night. Minimum temperatures were again within a few degrees of record levels in SE QLD and on the NSW Northern Tablelands, while the weather station in Bombala township on the NSW Southern Tablelands set a new July record with a low of -9.6. Cooma township recorded -10.0. On the Northern Tablelands, Glen Innes Airport recorded -10.9, Armidale Uni -10.5, and Tenterfield -9.0, 10.2 below average. Sydney's Observatory Hill reported a low of 4.9, the coldest morning of winter so far, and Richmond recorded -3.8. In SE QLD, Oakey and Stanthorpe reported -7.0 and -6.8 respectively, around 9 or 10 below normal. In Brisbane's west, Amberley reported -2.6, 8 below.

Another wintry blast arrived on the continent from the southwest this afternoon. The front, which crossed the SA southeastern coast around 4pm, brought even colder air over the region than last week's cold outburst, but with cool dry air already in residence over southeastern Australia, there was little precipitation either in the thin rainband ahead of the front or in the cold unstable airstream that followed. Strong winds with gale force gusts preceded and accompanied the front in SA, VIC and TAS (see Gales and Gusts below). Power was cut to more than 10,000 homes in Melbourne and emergency workers were called out to over 300 jobs as gales brought down trees, power lines and fences. The worst hit areas were outer eastern Melbourne and the Dandenongs. Dunns Hill, near Mt Dandenong, recorded a peak gust of 95km/h at midday, while in southern Port Phillip Bay, South Channel Island reported a gust of 102km/h at the same time.

Brief heavy showers gave unseasonably heavy rain to the NT's northeast Arnhem coast and Groote Eylandt this afternoon. Groote Eylandt Airport recorded 24.0mm between noon and 3pm with 19.4 falling between 2 and 3pm. Alyangula, also on Groote Eylandt, registered 16mm for the 24 hours to 9am Tuesday, but falling during an hour or so today, setting a new July rainfall record in 26 years of observations. This is the middle of the dry season, and rain of any type is rare in the NT Top End. There is little on surface or upper charts or satellite cloud imagery to indicate the cause of the intense showers, but a broad ESE flow covered the Gulf of Carpentaria where moisture levels and sea surface temperature are a little above average.

National weather extremes for today

Data provided by the Bureau of Meteorology

Records set this day (previous record and years of computerised record shown in brackets):
Lowest daily minimum temperature for July:
New South Wales:
070005 BOMBALA (THERRY STREET) -9.6 (-9.4, 35)

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 13:38EST, 03/03/2004.

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

34.3 WEST ROEBUCK W Kimberley WA
33.9 OENPELLI N Rivers NT
33.4 PIRLANGIMPI N Rivers NT
33.4 BATCHELOR AERO N Rivers NT
33.2 MIDDLE POINT AWS N Rivers NT

+6.5   28.7 CARNARVON AIRPORT W Gascoyne WA
+5.8   22.7 WOOMERA AERODROME NW Pastoral SA
+5.5   16.5 BUSHY PARK (BUSHY PARK ESTATES) Derwent Valley TAS
+5.5   16.4 MAYDENA POST OFFICE Derwent Valley TAS
+5.3   20.5 LAKE VICTORIA STORAGE Lower Darling NSW

26.5 COCOS ISLAND AIRPORT Islands ISL
24.3 COCONUT ISLAND N Peninsula QLD
24.1 HORN ISLAND N Peninsula QLD
24.0 MCCLUER ISLAND N Rivers NT
22.8 BLACK POINT N Rivers NT

+8.1   11.8 HAWKER Upper North SA
+7.1   9.1 GROVE RESEARCH STATION Southeast TAS
+6.6   10.1 WYNYARD AIRPORT N Coast TAS
+5.5   7.5 POWRANNA (TASMANIA FEEDLOT) N Coast TAS
+5.1   10.4 BEVERLEY Cent Wheatbelt WA

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

-3.2 FALLS CREEK Upper NE VIC
-1.0 MOUNT BULLER Upper NE VIC
0.0 CABRAMURRA SMHEA AWS SW Slopes S NSW
0.0 MT BAW BAW W Gippsland VIC
0.8 CHARLOTTE PASS (KOSCIUSKO CHALET) Snowy Mtns NSW

-3.8   12.8 BARADINE FORESTRY NW Plains E NSW
-3.6   14.5 BREWARRINA HOSPITAL Upper Darling NSW
-3.6   14.7 WALGETT AIRPORT AWS NW Plains W NSW
-3.5   11.7 WELLINGTON (AGROWPLOW) CW Slopes S NSW
-3.4   13.7 COONAMBLE COMPARISON CW Plains N NSW

-20.1 ARMIDALE AIRPORT AWS N Tablelands W NSW
-10.9 GLEN INNES AIRPORT AWS N Tablelands W NSW
-10.5 ARMIDALE (UNI NEW ENGLAND) N Tablelands W NSW
-10.0 COOMA VISITORS CENTRE Goulburn/Monaro NSW
-9.6 BOMBALA (THERRY STREET) Goulburn/Monaro NSW

-10.1   -9.0 TENTERFIELD (FEDERATION PARK) N Tablelands W NSW
-9.8   -7.0 OAKEY AERO Darling Downs E QLD
-9.0   -7.0 STANTHORPE (GRANITE BELT HRS) Darling Downs E QLD
-8.6   -4.6 DALBY AIRPORT Darling Downs E QLD
-8.4   -9.6 BOMBALA (THERRY STREET) Goulburn/Monaro 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.

104.2 LAKE MARGARET DAM W Coast TAS
75.6 MOUNT ARTHUR (MOUNTAIN ROAD) N Coast TAS
38.8 ST HELENS POST OFFICE E Coast TAS
35.6 SECOND VALLEY FOREST Adelaide/Lofty SA
28.2 TRIDA (WILLANDRA NATIONAL PARK) Southwest Plains NSW

SOUTH AUSTRALIA
    Adelaide/Lofty
35.6 SECOND VALLEY FOREST

NEW SOUTH WALES
    Southwest Plains
28.2 TRIDA (WILLANDRA NATIONAL PARK)

TASMANIA
    N Coast
75.6 MOUNT ARTHUR (MOUNTAIN ROAD)
    E Coast
38.8 ST HELENS POST OFFICE
    W Coast
104.2 LAKE MARGARET DAM

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 30.9 +2.1 13.2 -0.4 0.0
ALBANY AIRPORT 14.3 -1.5 8.8 +1.3 0.8
PERTH AIRPORT 18.3 +0.5 9.1 +1.0 0.4
KALGOORLIE-BOULDER AIRPORT 16.1 -0.6 3.1 -1.8 0.0
DARWIN AIRPORT 30.8 +0.3 18.8 -0.5 0.0
ALICE SPRINGS AIRPORT 20.9 +1.3 -0.7 -4.7 0.0
ADELAIDE (KENT TOWN) 16.9 +1.6 9.2 +1.8 0.0
MOUNT GAMBIER AERO 11.8 -1.3 6.9 +1.8 0.0
CAIRNS AERO 26.1 +0.4 15.7 -1.3 0.0
TOWNSVILLE AERO 24.5 -0.5 10.8 -2.7 0.0
ROCKHAMPTON AERO 23.2 +0.1 4.6 -4.8 0.0
AMBERLEY AMO 20.4 -0.7 -2.6 -8.0 0.0
BRISBANE AERO 19.3 3.4 0.0
ARMIDALE AIRPORT AWS 11.4 -20.1 0.2
COFFS HARBOUR MO 18.6 -0.1 1.5 -6.0 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 16.0 -0.7 5.7 -2.7 0.0
SYDNEY (OBSERVATORY HILL) 16.5 +0.3 4.9 -3.1 0.0
PROSPECT DAM 15.3 -1.4 1.9 -4.2 0.0
WOLLONGONG UNIVERSITY 16.7 -0.3 1.4 -7.0 0.0
CANBERRA AIRPORT 9.0 -2.3 -4.9 -4.7 0.0
WAGGA WAGGA AMO 12.1 -0.5 1.8 -0.9 0.0
MILDURA AIRPORT 19.0 +3.7 4.7 +0.4 0.0
EAST SALE AIRPORT 17.4 +3.7 -0.5 -3.7 0.0
MELBOURNE REGIONAL OFFICE 13.9 +0.5 8.1 +2.2 0.0
LAVERTON RAAF 14.5 +0.9 7.1 +2.2 0.0
BALLARAT AERODROME 11.8 +1.8 2.4 -0.8 0.0
LAUNCESTON AIRPORT 10.7 -0.2 7.2 +4.9 0.4
HOBART (ELLERSLIE ROAD) 14.9 +3.3 7.8 +3.3 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.
NORTHERN TERRITORY
    Arnhem
GROOTE EYLANDT AIRPORT AWS
19.4mm in 1 hr to 15:00 19.4mm/h
24.0mm in 3 hr to 15:00 8.0mm/h

SOUTH AUSTRALIA
    W Agricultural
NEPTUNE ISLAND : 87(260/ 69 ) at 14:12
NORTH SHIELDS (PORT LINCOLN AWS) : 76(260/ 65 ) at 13:51
    Yorke Peninsula
EDITHBURGH : 76(260/ 63 ) at 15:28
    Mt Lofty Ranges
MOUNT LOFTY : 98(310/ 69 ) at 04:00
VICTORIA
    Upper NE
MT HOTHAM AIRPORT : 115(320/ 22 ) at 03:00
    W Gippsland
WILSONS PROMONTORY LIGHTHOUSE : 102(330/ 58 ) at 07:29
    E Central
MELBOURNE AIRPORT : 82(360/ 65 ) at 11:00
SOUTH CHANNEL ISLAND : 102( 10/ 72 ) at 12:00
FRANKSTON AWS : 80( 10/ 63 ) at 12:00
DUNNS HILL : 95(360/ 54 ) at 12:00
RHYLL : 89(350/ 65 ) at 11:00
FAWKNER BEACON : 98( 20/ 76 ) at 11:40
    W Central
POINT WILSON : 85(360/ 72 ) at 12:00
    N Central
KILMORE GAP : 91( 10/ 67 ) at 11:30
    W Coast
COLAC (MT GELLIBRAND) : 91(350/ 70 ) at 11:52
TASMANIA
    Southeast
MAATSUYKER ISLAND LIGHTHOUSE : 106(310/ 85 ) at 12:38
MOUNT WELLINGTON : 109(330/ 63 ) at 10:21
TASMAN ISLAND : 91(360/ 50 ) at 14:00
ISLANDS
    Islands
HOGAN ISLAND : 85(290/ 76 ) at 22:45