Monday 14 JUL 2003

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2003

Dec

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July

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January

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Temperature extremes in WA
Strong winds buffet SE states


Infrared satellite image for 2pm WST (above, Weatherzone) shows a 4,000km long cloudstreak just ahead of the cold front, and lying along the sub-tropical jetstream (below, at 8pm WST, COLA)


The surface chart (above, BoM) for 2pm WST today. The colder air along the front shows up well in the tight temperature gradient at 850hPa, or about 1.4km, on the COLA chart below for 8pm WST.

A very laid-back front and a deep Southern Ocean low produced temperature extremes and strong gusty winds across southern Australia today.

Although its parent 946hPa low is nearly south of Tasmania, the cold front only crossed southwestern WA this morning giving Perth one of its coldest days on record with a top of only 12.5C. East of the front, most of the continent basked in well above July-average temperatures, as shown by the nearly black colour on the IR satellite image. Maximum temperatures in SE WA and SW SA were 8 to 10 above average in the high 20s -- Eucla's top of 27.7 was just 0.6C shy of their July record high.

The strong temperature gradient produced strong squally winds across much of VIC, TAS, and southern WA, SA and NSW. Top gusts of 100km/h were reported from the summit of Mount Lofty SA, and at Kilmore Gap and Dunns Hill near Mt Dandenong VIC. Mt Hotham Airport VIC reported a top of 106km/h and the summit of Mt Wellington TAS 128km/h.

In Tasmania the winds were at their strongest this evening. Scotts Peak Dam in the state's southwest reported an average windspeed of 94km/h at midnight.

The gusty winds raised widespread dust on SA's Eyre Peninsula during the afternoon and brought down trees and powerlines in Tasmania this evening. 1,200 homes around Nubeena on the Tasman Peninsula east of Hobart were blacked out for 2 hours. 1,000 homes at Taroona and Mt Nelson in southern Hobart, and customers in Beauty Point and Campbell Town in the state's north were also without power.

More detailed gust data is below.

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 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

33.6 WEST ROEBUCK W Kimberley WA
33.3 BIDYADANGA W Kimberley WA
33.0 JABIRU AIRPORT N Rivers NT
32.7 KALUMBURU N Kimberley WA
32.7 KALUMBURU MISSION N Kimberley WA

+9.7   27.7 EUCLA Eucla WA
+7.6   26.0 NULLARBOR W Agricultural SA
+7.5   25.5 EYRE Eucla WA
+7.4   28.7 CARNEGIE Interior WA
+6.9   27.3 WARBURTON AIRFIELD Interior WA

25.9 COCOS ISLAND AIRPORT Islands ISL
24.5 MCCLUER ISLAND N Rivers NT
24.1 HORN ISLAND N Peninsula QLD
24.0 WARRUWI N Rivers NT
23.9 TROUGHTON ISLAND N Kimberley WA

+7.4   15.9 TOORAK RESEARCH STATION Gulf Country QLD
+7.1   14.6 NAMBOUR DPI Brisbane/SE Coast QLD
+6.7   14.8 WINTON POST OFFICE Northwest QLD
+6.5   12.7 GYMPIE Brisbane/SE Coast QLD
+6.4   17.2 PROSERPINE AIRPORT Central Coast E QLD

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

-1.3 MT HOTHAM Upper NE VIC
0.0 MOUNT BULLER Upper NE VIC
0.8 FALLS CREEK Upper NE VIC
2.0 THREDBO AWS Snowy Mtns NSW
2.0 MT BAW BAW W Gippsland VIC

-6.2   12.5 GOSNELLS CITY Lower West WA
-5.6   12.1 JANDAKOT AERO Lower West WA
-5.5   12.6 MEDINA RESEARCH CENTRE Lower West WA
-5.3   12.5 PERTH AIRPORT Lower West WA
-5.2   12.5 PEARCE RAAF Lower West WA

-11.2 CHARLOTTE PASS (KOSCIUSKO CHALET) Snowy Mtns NSW
-7.6 COOMA AIRPORT AWS Goulburn/Monaro NSW
-6.5 COOMA VISITORS CENTRE Goulburn/Monaro NSW
-6.2 BOMBALA (THERRY STREET) Goulburn/Monaro NSW
-6.0 THREDBO AWS Snowy Mtns NSW
-6.0 THREDBO VILLAGE Snowy Mtns NSW

-11.4   0.0 CHARTERS TOWERS AIRPORT Central Coast W QLD
-5.1   -3.1 MURRURUNDI POST OFFICE Hunter Valley NSW
-5.0   -6.2 BOMBALA (THERRY STREET) Goulburn/Monaro NSW
-4.6   0.0 SCONE SCS Hunter Valley NSW
-4.5   -0.5 ALICE SPRINGS AIRPORT N Plateau NT
-4.5   -0.8 JERRYS PLAINS POST OFFICE Hunter Valley 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.

70.2 LAKE MARGARET DAM W Coast TAS
63.6 KARRALEA Lower West WA
34.0 CRADLE MOUNTAIN VISITORS CENTRE Central Plateau TAS
33.0 LOBETHAL Adelaide/Lofty SA
31.6 BEDFORDALE Lower West WA

WESTERN AUSTRALIA
    Lower West
63.6 KARRALEA
31.6 BEDFORDALE

SOUTH AUSTRALIA
    Adelaide/Lofty
33.0 LOBETHAL

TASMANIA
    Central Plateau
34.0 CRADLE MOUNTAIN VISITORS CENTRE
    W Coast
70.2 LAKE MARGARET DAM

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 32.1 +3.3 12.0 -1.6 0.0
PERTH AIRPORT 12.5 -5.3 11.2 +3.1 14.2
ALBANY AIRPORT 12.1 -3.7 9.2 +1.7 5.4
KALGOORLIE-BOULDER AIRPORT 21.6 +4.9 8.4 +3.5 0.0
DARWIN AIRPORT 31.7 +1.2 21.5 +2.2 0.0
ALICE SPRINGS AIRPORT 22.7 +3.1 -0.5 -4.5 0.0
ADELAIDE (KENT TOWN) 18.0 +2.7 7.0 -0.4 0.0
MOUNT GAMBIER AERO 16.0 +2.9 7.5 +2.4 1.2
CAIRNS AERO 26.3 +0.6 18.2 +1.2 0.2
TOWNSVILLE AERO 28.0 +3.0 14.8 +1.3 0.0
ROCKHAMPTON AERO 24.9 +1.8 12.7 +3.3 0.2
AMBERLEY AMO 21.7 +0.6 7.3 +1.9 2.4
BRISBANE AERO 21.5 10.0 0.0
ARMIDALE AIRPORT AWS 12.1 1.0 0.0
COFFS HARBOUR MO 18.0 -0.7 7.1 -0.4 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 16.6 -0.1 6.3 -2.1 0.0
SYDNEY (OBSERVATORY HILL) 18.9 +2.7 7.9 -0.1 0.0
PROSPECT DAM 17.8 +1.1 3.2 -2.9 0.0
WOLLONGONG UNIVERSITY 17.5 +0.5 5.0 -3.4 0.0
CANBERRA AIRPORT 10.9 -0.4 -1.0 -0.8 0.2
WAGGA WAGGA AMO 12.6 0.0 -0.1 -2.8 0.2
MILDURA AIRPORT 17.3 +2.0 2.6 -1.7 0.0
EAST SALE AIRPORT 16.8 +3.1 -0.4 -3.6 0.0
MELBOURNE REGIONAL OFFICE 14.4 +1.0 8.4 +2.5 0.2
LAVERTON RAAF 15.1 +1.5 7.9 +3.0 0.0
BALLARAT AERODROME 11.1 +1.1 4.8 +1.6 0.0
LAUNCESTON AIRPORT 11.4 +0.5 1.1 -1.2 0.2
HOBART (ELLERSLIE ROAD) 14.8 +3.2 5.2 +0.7 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
    Central West
GERALDTON AIRPORT
6.6mm in 35 min to 05:30 11.3mm/h
NORTH ISLAND
10.0mm in 1 hr to 04:00 10.0mm/h
    SW & S Coast
ESPERANCE
18.2mm in 22 min to 23:22 49.6mm/h

SOUTH AUSTRALIA
    Kangaroo Is
CAPE WILLOUGHBY : 91(340/ 67 ) at 11:28
    Mt Lofty Ranges
MOUNT LOFTY : 100(320/ 69 ) at 22:30
HINDMARSH ISLAND AWS : 80(320/ 63 ) at 13:11
QUEENSLAND
    N Coast--Barron
GREEN ISLAND : 74(160/ 65 ) at 16:30
    Brisbane/SE Coast
CAPE MORETON LIGHTHOUSE : 96(140/ 59 ) at 23:10
VICTORIA
    Upper NE
MT HOTHAM AIRPORT : 106(330/ 11 ) at 11:30
MT HOTHAM : 91(350/ 65 ) at 23:09
    E Central
DUNNS HILL : 100(360/ 61 ) at 20:44
    N Central
KILMORE GAP : 100(360/ 80 ) at 20:30
    W Coast
COLAC (MT GELLIBRAND) : 74(350/ 63 ) at 23:30
TASMANIA
    N Coast
CAPE GRIM B.A.P.S. : 96(340/ 67 ) at 21:00
    Southeast
MAATSUYKER ISLAND LIGHTHOUSE : 108(320/ 72 ) at 23:00
MOUNT WELLINGTON : 128(320/104 ) at 20:30
TASMAN ISLAND : 104(340/ 72 ) at 22:30
HARTZ MOUNTAIN(KEOGHS PIMPLE) : 83(310/ 65 ) at 20:21
    W Coast
STRAHAN AERODROME : 95(350/ 63 ) at 23:00