Monday 22 SEP 2003

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2003

Dec

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January

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September heatwave sets records across five states

Maximum (above) and minimum (below) temperature departures from normal today. BoM
Below, the surface chart for 10am shows the broad area of moderately strong pressure gradient from southern QLD and NT to VIC. BoM

Century-old temperature records were swept away today as early season heat covered NSW and large parts of VIC, SA, NT and QLD. NSW, SA and VIC set new state records for September maximum temperatures.

New records were set at dozens of weather stations across the five states (see records below), while in NSW over half a dozen locations broke the old NSW September temperature record of 38.8C. Both White Cliffs and Menindee hold the new record of 39.5. Top temperatures in western NSW were 16 or 17 above the September norm.

In VIC, Mildura's top of 37.4 comfortably exceeded the previous Victorian September record of 35.6 held by Mildura, Merbein and Ouyen. In SA, Moomba's maximum of 41.4 broke the old state 40.5 record held by Oodnadatta. QLD only just missed out, with Birdsville's 42.4 0.2 degrees shy of the current state record.

Many long-period records fell. At Broken Hill, the new record of 37.2C is 2.8 hotter than any September day in the past 89 years. Lake Victoria, Menindee, Brewarrina, Balranald, Ivanhoe, Coonamble, Nyngan, Baradine, Alice Springs and Mildura are other locations with between 50 and 90 years of computerised records which saw old records broken, often by considerable margins, today.

Stations in SW QLD, NE SA and southern NT reported maxima between 41 and 42.4 at Birdsville.

A narrow band of heat has been working its way across the continent over the past couple of days. Temperatures in SE WA and western SA were 12 to 16 above normal on Saturday, while western NSW and SW QLD were 12 to 14 above yesterday with Tibooburra's top of 38.7 breaking its 47-year record by 1.5 degrees. Its new record was short-lived, being broken again today with a top of 39.3.

Today's weather map, however, shows an unusually broad northwesterly stream covering the east of the continent. The pressure gradient between the trough near Adelaide and a strong ridge up the QLD coast is about 30hPa, not exceptionally great but evenly distributed. It was strong enough to generate average winds of 40 to 80km/h over the whole area (see Gusts & Gales below) and sweep to the southeast heat which has been accumulating over a broad area of Central Australia because recent troughs have been too weak to flush it out.

The combination of early-season heat and strong dry winds is bad news for those on the land, who face rapid drying off of pastures and crops after last month's useful rain. In northwest VIC, wind which gusted as high as 93km/h at Walpeup, brought down trees and powerlines and unroofed several houses. The areas worst affected were Swan Hill, Kerang and Mildura. Raised dust and dust storms contributed to the discomfort of those in NW VIC, western NSW and SW QLD, with the visibility reduced to half a kilometre at Broken Hill at 3pm.

Full details of all exceptional minimum and maximum temperatures for today are given on today's Noteworthy Weather report.

Sources: BoM, Cobar Age, ABC, SMH

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):
Highest daily maximum temperature for September anywhere in NSW:
046042 WHITE CLIFFS POST OFFICE 39.5
047019 MENINDEE POST OFFICE 39.5
The previous record was 38.8 at Mungindi on 29 September 2000
Highest daily maximum temperature for September:
Northern Territory:
015502 ALI CURUNG 40.4 (39.4, 15)
015590 ALICE SPRINGS AIRPORT 38.8 (37.7, 62)
015602 JERVOIS 41.0 (40.6, 35)
015603 KULGERA 38.5 (38.0, 23)
South Australia:
017031 MARREE 39.5 (38.7, 46)
017099 ARKAROOLA 37.5 (36.5, 26)
017110 LEIGH CREEK AIRPORT 37.1 (35.3, 14)
024024 LOXTON RESEARCH CENTRE 35.0 (34.6, 19)
Queensland:
038002 BIRDSVILLE POLICE STATION 42.4 (42.2, 47)
New South Wales:
046037 TIBOOBURRA POST OFFICE 39.3 (38.7, 47) previous record set yesterday
046042 WHITE CLIFFS POST OFFICE 39.5 (37.7, 40)
046043 WILCANNIA (REID ST) 39.4 (37.2, 47)
047007 BROKEN HILL (PATTON STREET) 37.2 (34.4, 89)
047016 LAKE VICTORIA STORAGE 37.5 (35.0, 78)
047019 MENINDEE POST OFFICE 39.5 (37.2, 86)
048015 BREWARRINA HOSPITAL 38.8 (38.3, 86)
048027 COBAR MO 38.0 (35.9, 41)
049002 BALRANALD RSL 36.7 (35.6, 96)
049019 IVANHOE POST OFFICE 39.2 (37.2, 60)
051010 COONAMBLE COMPARISON 37.3 (37.2, 93)
051039 NYNGAN AIRPORT 37.4 (35.9, 75)
053002 BARADINE FORESTRY 34.8 (34.2, 55)
061351 PEATS RIDGE (WARATAH ROAD) 33.3 (32.7, 22)
066124 PARRAMATTA NORTH (MASONS DRIVE) 35.4 (34.8, 36)
070310 TIDBINBILLA NATURE RESERVE 25.0 (24.4, 18)
075031 HAY (MILLER STREET) 36.4 (36.0, 46)
075032 HILLSTON AIRPORT 36.8 (35.6, 47)
075039 LAKE CARGELLIGO AIRPORT 36.2 (35.6, 33)
075041 GRIFFITH AIRPORT AWS 35.0 (33.5, 28)
Victoria:
076031 MILDURA AIRPORT 37.4 (35.6, 57)
076047 OUYEN (POST OFFICE) 35.6 (35.3, 47)

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

42.4 BIRDSVILLE POLICE STATION Channel Country QLD
42.4 BIRDSVILLE AIRPORT Channel Country QLD
41.5 MOOMBA AIRPORT NE Pastoral SA
41.1 JERVOIS N Plateau NT
41.0 BEDOURIE POLICE STATION Channel Country QLD

+17.3   37.5 LAKE VICTORIA STORAGE Lower Darling NSW
+17.1   37.4 MILDURA AIRPORT Mallee N VIC
+16.7   39.5 MENINDEE POST OFFICE Lower Darling NSW
+16.7   39.2 IVANHOE POST OFFICE Southwest Plains NSW
+16.3   38.0 COBAR MO Upper Darling NSW

27.2 ARGYLE AERODROME E Kimberley WA
27.1 WYNDHAM N Kimberley WA
27.1 HALLS CREEK AIRPORT E Kimberley WA
27.0 NORTHERN ENDEAVOUR Islands ISL
26.9 WARMUN E Kimberley WA

+13.7   24.3 CUNNAMULLA POST OFFICE Warrego QLD
+12.8   23.7 JERVOIS N Plateau NT
+12.8   18.6 CONDOBOLIN AG RESEARCH STN CW Plains S NSW
+12.1   21.8 CHARLEVILLE AERO Warrego QLD
+11.8   22.8 THARGOMINDAH POST OFFICE Far SW QLD

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

5.5 MOUNT READ W Coast TAS
5.9 MOUNT WELLINGTON Southeast TAS
6.3 CRADLE MOUNTAIN AIRSTRIP Central Plateau TAS
8.0 LIAWENEE Central Plateau TAS
10.0 MT HOTHAM Upper NE VIC
10.0 LAKE ST CLAIR NATIONAL PARK Central Plateau TAS

-5.5   17.5 MORAWA Central West WA
-5.1   15.5 WONGAN HILLS Central West WA
-5.0   25.6 NYANG STATION W Gascoyne WA
-5.0   18.6 PAYNES FIND E Gascoyne WA
-4.8   17.0 SOUTHERN CROSS Goldfields WA

-2.9 LIAWENEE Central Plateau TAS
-2.8 FINGAL (LEGGE STREET) E Coast TAS
-2.8 LAKE LEAKE (ELIZABETH RIVER) E Coast TAS
-2.5 LAKE ST CLAIR NATIONAL PARK Central Plateau TAS
-2.2 TARRALEAH VILLAGE Derwent Valley TAS

-6.2   -2.8 FINGAL (LEGGE STREET) E Coast TAS
-6.0   4.0 JURIEN BAY Lower West WA
-5.5   -1.5 BUSHY PARK (BUSHY PARK ESTATES) Derwent Valley TAS
-5.4   0.4 SWANSEA POST OFFICE E Coast TAS
-4.8   -2.8 LAKE LEAKE (ELIZABETH RIVER) E Coast TAS

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.

82.0 ROSES TIER (MEMORY ROAD WEST) E Coast TAS
66.8 SNUG PRIMARY SCHOOL Southeast TAS
52.4 MARGARET RIVER CALM Lower West WA
48.0 BALINGUP Lower West WA
35.3 BOYANUP Lower West WA

WESTERN AUSTRALIA
    Lower West
52.4 MARGARET RIVER CALM
48.0 BALINGUP
35.3 BOYANUP

TASMANIA
    E Coast
82.0 ROSES TIER (MEMORY ROAD WEST)
    Southeast
66.8 SNUG PRIMARY SCHOOL

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 27.7 -4.1 22.6 +4.2 0.0
ALBANY AIRPORT 16.7 -0.6 7.2 -0.8 16.2
PERTH AIRPORT 17.6 -2.5 9.1 +0.2 15.0
KALGOORLIE-BOULDER AIRPORT 19.9 -2.3 7.3 -0.6 3.4
DARWIN AIRPORT 32.5 0.0 25.3 +2.2 0.0
ALICE SPRINGS AIRPORT 38.8 +11.8 21.8 +11.6 0.0
ADELAIDE (KENT TOWN) 25.4 +6.6 12.3 +2.7 0.0
MOUNT GAMBIER AERO 19.7 +3.9 6.4 +0.2 0.4
CAIRNS AERO 29.7 +1.8 19.5 +0.9 0.0
TOWNSVILLE AERO 28.8 +1.1 20.3 +3.0 0.0
ROCKHAMPTON AERO 31.3 +4.1 15.1 +1.6 0.0
AMBERLEY AMO 32.7 +7.4 12.9 +3.5 0.0
BRISBANE AERO 26.4 16.0 0.0
ARMIDALE AIRPORT AWS 25.9 10.2 0.0
COFFS HARBOUR MO 29.9 +8.1 15.7 +4.8 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 33.2 +13.1 14.9 +3.6 0.0
SYDNEY (OBSERVATORY HILL) 32.4 +12.5 14.8 +3.8 0.0
PROSPECT DAM 34.4 +13.4 11.8 +2.5 0.4
WOLLONGONG UNIVERSITY 27.6 +7.4 10.8 +0.2 0.4
CANBERRA AIRPORT 24.3 +8.3 5.0 +1.9 0.2
WAGGA WAGGA AMO 26.0 +8.6 7.0 +1.8 0.0
MILDURA AIRPORT 37.4 +17.1 7.4 0.0 0.0
EAST SALE AIRPORT 18.2 +1.3 2.0 -3.6 0.0
MELBOURNE REGIONAL OFFICE 22.3 +5.1 7.8 -0.1 0.0
LAVERTON RAAF 23.2 +6.4 3.5 -3.1 0.0
BALLARAT AERODROME 15.7 +1.9 3.8 -1.1 0.0
LAUNCESTON AIRPORT 14.1 0.0 1.1 -3.1 0.2
HOBART (ELLERSLIE ROAD) 17.1 +2.1 3.6 -2.8 2.6

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.
TASMANIA
    W Coast
MOUNT READ
18.0mm in 3 hr to 18:00 6.0mm/h

WESTERN AUSTRALIA
    Lower West
ROTTNEST ISLAND : 82(250/ 63 ) at 16:30
OCEAN REEF : 91(260/ 58 ) at 20:51
BICKLEY : 95(270/ 45 ) at 16:01
    SW & S Coast
CAPE LEEUWIN : 100(240/ 87 ) at 21:04
CAPE NATURALISTE : 91(220/ 72 ) at 22:20
    Eucla
FORREST : 91(230/ 65 ) at 03:01
    Goldfields
LAVERTON AERO : 74(240/ 63 ) at 00:15
SOUTH AUSTRALIA
    W Agricultural
NEPTUNE ISLAND : 78(290/ 67 ) at 08:32
    Kangaroo Is
CAPE WILLOUGHBY : 100(350/ 82 ) at 09:08
    Adelaide Plains
EDINBURGH RAAF : 89(300/ 69 ) at 10:59
    Mt Lofty Ranges
MOUNT LOFTY : 109(300/ 70 ) at 11:00
MOUNT CRAWFORD (TOWER HILL) : 104(270/ 63 ) at 11:24
HINDMARSH ISLAND AWS : 85(320/ 63 ) at 10:51
    Upper Murray
RENMARK AERO : 95(260/ 76 ) at 13:08
NEW SOUTH WALES
    Far Northwest
TIBOOBURRA AIRPORT : 95(320/ 58 ) at 18:52
    Hunter Valley
MURRURUNDI GAP AWS : 80(320/ 63 ) at 14:00
    C Tablelands S
MOUNT BOYCE AWS : 102(240/ 46 ) at 23:23
    CW Slopes S
FORBES AIRPORT AWS : 85(280/ 65 ) at 21:46
    South Coast
MONTAGUE ISLAND LIGHTHOUSE : 89(120/ 70 ) at 23:12
GREEN CAPE AWS : 83(240/ 65 ) at 21:13
    Goulburn/Monaro
COOMA AIRPORT AWS : 89(300/ 63 ) at 19:40
BOMBALA AWS : 74(280/ 65 ) at 14:07
GOULBURN AIRPORT AWS : 95(320/ 54 ) at 19:51
    Snowy Mtns
THREDBO AWS : 104(320/ 70 ) at 19:00
    Riverina E
YANCO AGRICULTURAL INSTITUTE : 106(250/ 67 ) at 19:01
DENILIQUIN AIRPORT AWS : 91(270/ 76 ) at 17:03
VICTORIA
    Mallee N
MILDURA AIRPORT : 80(310/ 63 ) at 13:59
WALPEUP RESEARCH : 93(260/ 74 ) at 14:51
    Mallee S
SWAN HILL AERODROME : 98(290/ 46 ) at 15:43
    Upper NE
MOUNT BULLER : 121(340/ 78 ) at 18:30
MT HOTHAM AIRPORT : 76(330/ 65 ) at 12:17
MT HOTHAM : 121(330/ 80 ) at 16:37
    W Gippsland
WILSONS PROMONTORY LIGHTHOUSE : 98(340/ 33 ) at 17:00
    E Central
SOUTH CHANNEL ISLAND : 108(310/ 85 ) at 16:33
DUNNS HILL : 91(320/ 35 ) at 17:03
    W Central
POINT WILSON : 76(290/ 63 ) at 16:38
    W Coast
COLAC (MT GELLIBRAND) : 96(350/ 78 ) at 14:45
MORTLAKE RACECOURSE : 89(360/ 65 ) at 13:01
TASMANIA
    N Coast
CAPE GRIM B.A.P.S. : 83(280/ 69 ) at 19:00
    Southeast
MAATSUYKER ISLAND LIGHTHOUSE : 128(310/100 ) at 18:49
MOUNT WELLINGTON : 111(270/ 67 ) at 19:57
TASMAN ISLAND : 109(300/ 78 ) at 19:00
HARTZ MOUNTAIN(KEOGHS PIMPLE) : 91(280/ 65 ) at 19:16
    W Coast
STRAHAN AERODROME : 78(310/ 63 ) at 18:15
ISLANDS
    Islands
HOGAN ISLAND : 113(290/ 95 ) at 18:08