Sunday 23 NOV 2003

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2003

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Heavy rain, hail as trough exits NSW, QLD


A cold pool (above) sweeps across NSW and SE QLD. This 12-hourly sequence of charts, from 12.00 UTC (11pm EDST) Saturday to 12.00 UTC (11pm EDST) Monday, shows the situation at the 500hPa pressure level, about 5.5km above sea level. The trough with an embedded low shows the location of cold upper air, while the blue shading indicates an area of strong vorticity -- the level of spin around the vertical axis of the low, which both because of its cyclonic curvature and increasing speed or shear towards the centre, generates widespread upmotion and condensation. COLA

The surface chart for 11am today (below) shows the broad, slow-moving trough over NSW and QLD, but only the weak low over the southern NSW inland reflects what is going on aloft. By late today, the surface trough had moved off the QLD coast and southeasterlies were sweeping the eastern half of the continent. However, the continued presence of the upper low ensured these unstable southeasterlies would continue to deliver rain on and east of the Great Divide. BoM.

The significant rain and storm event that has crossed Australia over the past week or more went out with a bang today as a cold pool swept across southeastern Australia. Areas of rain continued to give useful falls in eastern NSW as the airstream turned southeasterly behind the trough, while afternoon storms fired up along and west of the surface trough line from Mackay QLD to SE NSW.

Most of NSW from the ranges east recorded between 50 and 200mm from this rain event, helping restore water storages particularly on the South Coast. Among the heaviest totals for the week from 9am 20 November to 9am 27 November, when showers from the southeasterly stream died out, were:

200.5 NEWCASTLE UNIVERSITY
181.8 ULLADULLA AWS
161.0 FITZROY FALLS (RED HILLS)
152.2 PATERSON (TOCAL AWS)
148.8 KATOOMBA
139.6 CARROW BROOK
138.9 PATERSON POST OFFICE
138.9 CASTLE COVE
133.0 ROBERTSON
131.8 RICHMOND RAAF
128.2 MOUNT BOYCE AWS
128.0 LAWSON (WILSON STREET)
128.0 BLACKHEATH (WOMBAT STREET)

Heavy downpours and falls of small hail were reported today with thunderstorms across eastern NSW and SE QLD. Among the more noteworthy events:

  • A heavy and prolonged hailstorm left snow-like drifts of hail over 30cm deep along an 8km length of the Lithgow to Mudgee Road near the Rylstone turn off during the afternoon. In another storm on the Blue Mountains, pea-sized hail covered the ground at Leura.
  • Another hailstorm around 1.30am Monday morning left up to 30cm of ice on the ground at Yarrawonga, 15km east of Gulgong.
  • Minor flooding was reported around Canberra, where 53mm was recorded over two days at the Airport, the heaviest two day fall since February 2002.
  • Heavy rain fell in the lower Hunter, Newcastle University recording 111.4mm for the 24 hours to 9am Monday, by far the heaviest total in the nation. 37.2mm fell in the hour to 7 this evening at Tocal, south of Paterson, and 26mm was recorded in the hour to 5am Monday at Nobbys, Newcastle.
  • More than 700 properties around Rockhampton QLD lost power after substations were struck by lightning. Wind brought down gum trees and damaged a light aircraft east of the city.
  • Caravans were overturned and unroofed at Caboolture.
  • 19.8mm fell in 18 minutes at Tewantin, north of Brisbane, soon after 3pm.

News sources: ABC, Mudgee Guardian, Northern Daily Leader (Tamworth)

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

41.8 WARMUN E Kimberley WA
41.7 CURTIN AERO W Kimberley WA
41.3 FITZROY CROSSING AERO W Kimberley WA
41.1 CENTURY MINE Gulf Country QLD
41.0 ARGYLE AERODROME E Kimberley WA

+11.1   32.8 MOUNT BARKER Lower West WA
+10.9   35.0 ONGERUP Cent Wheatbelt WA
+10.6   31.3 WINDY HARBOUR Lower West WA
+10.4   32.1 MANJIMUP Lower West WA
+10.3   31.5 PEMBERTON Lower West WA

30.0 NORTHERN ENDEAVOUR Islands ISL
29.5 SWEERS ISLAND Gulf Country QLD
29.0 ARGYLE AERODROME E Kimberley WA
28.9 MORNINGTON ISLAND Gulf Country QLD
28.9 NORMANTON AIRPORT Gulf Country QLD

+10.0   22.9 BENCUBBIN Cent Wheatbelt WA
+9.0   20.2 PINGELLY Cent Wheatbelt WA
+8.9   20.1 CORRIGIN Cent Wheatbelt WA
+8.5   21.5 MEDINA RESEARCH CENTRE Lower West WA
+8.2   20.5 JANDAKOT AERO Lower West WA

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

3.0 THREDBO AWS Snowy Mtns NSW
3.8 MT HOTHAM Upper NE VIC
6.0 CHARLOTTE PASS (KOSCIUSKO CHALET) Snowy Mtns NSW
6.0 MT BAW BAW W Gippsland VIC
7.0 MOUNT BULLER Upper NE VIC

-13.0   15.1 BALRANALD RSL Southwest Plains NSW
-11.9   17.5 LAKE CARGELLIGO AIRPORT Riverina W NSW
-11.4   9.5 BOMBALA (THERRY STREET) Goulburn/Monaro NSW
-10.2   18.2 HAY (MILLER STREET) Riverina W NSW
-9.4   21.7 WILCANNIA (REID ST) Far Northwest NSW
-9.4   12.1 OMEO Upper NE VIC

-1.1 MT HOTHAM Upper NE VIC
0.0 THREDBO AWS Snowy Mtns NSW
0.3 MOUNT WELLINGTON Southeast TAS
1.0 MOUNT BULLER Upper NE VIC
1.0 MT BAW BAW W Gippsland VIC

-10.8   1.2 EYRE Eucla WA
-6.2   9.9 LEIGH CREEK AIRPORT NE Pastoral SA
-6.1   11.7 ALICE SPRINGS AIRPORT N Plateau NT
-6.0   9.6 WILCANNIA (REID ST) Far Northwest NSW
-5.0   12.4 TIBOOBURRA POST OFFICE Far Northwest 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.

99.6 CHRISTMAS ISLAND AERO Islands ISL
82.0 BULLENGAROOK EAST (SESKINORE) W Central VIC
79.7 MURRAY RIVER @ JINGELLIC SW Slopes S NSW
71.5 UPPER ROUCHEL (MOUNT VIEW) Hunter Valley NSW
66.8 CARABOST SW Slopes S NSW

NORTHERN TERRITORY
    N Rivers
55.0 POINT STUART
53.0 BULEY ROCKHOLE

QUEENSLAND
    N Peninsula
58.0 ARCHER RIVER ROADHOUSE
    Wide Bay/Burnett
59.0 GRACEDIEU
    Brisbane/SE Coast
54.0 MALENY DENNING RD

NEW SOUTH WALES
    MidNorth Coast S
59.8 BRETTI - VINEGAR HILL
    Hunter Valley
71.5 UPPER ROUCHEL (MOUNT VIEW)
    Illawarra
60.6 TOOLIJOOA (NYORA)
59.0 WATTAMOLLA (GRIFFITHS)
58.6 GREENWELL POINT BOWLING CLUB
57.6 BEAUMONT (THE CEDARS)
57.2 WATTAMOLLA (TAMOL)
    South Coast
58.0 UPPER BROGO (UPPER BROGO RD)
    Goulburn/Monaro
65.0 MOUNT FAIRY (MERIGAN)
56.0 YASS (DERRINGULLEN)
    Snowy Mtns
54.0 ADAMINABY BAKER STREET
    SW Slopes S
79.7 MURRAY RIVER @ JINGELLIC
66.8 CARABOST
63.0 HOLBROOK (NARRAWA)
56.8 ADELONG (THE WILLOWS)
54.0 TUMBARUMBA (LANDSDOWNE)
51.8 CARABOST (YALLOWIN)
    SW Slopes N
56.8 MURRINGO (WINDERMERE)

VICTORIA
    Lower North
61.0 KOTTA
    Lower NE
57.0 BULLIOH (WOOD HILL)
    Upper NE
55.2 MT HOTHAM AIRPORT
    W Central
82.0 BULLENGAROOK EAST (SESKINORE)
54.4 MOUNT GISBORNE

ISLANDS
    Islands
99.6 CHRISTMAS ISLAND AERO

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 36.6 +3.1 27.7 +2.7 0.0
PERTH AIRPORT 27.3 +1.7 19.6 +7.0 0.0
ALBANY AIRPORT 25.6 +4.8 13.0 +2.4 0.0
KALGOORLIE-BOULDER AIRPORT 34.1 +5.2 17.6 +3.6 0.0
DARWIN AIRPORT 33.0 -0.2 21.7 -3.6 12.8
ALICE SPRINGS AIRPORT 28.8 -4.8 11.7 -6.1 0.0
ADELAIDE (KENT TOWN) 19.0 -5.6 10.5 -3.3 0.0
MOUNT GAMBIER AERO 17.1 -3.0 9.5 +1.3 2.6
CAIRNS AERO 30.7 +0.1 23.2 +0.9 0.0
TOWNSVILLE AERO 32.1 +1.4 24.6 +1.8 1.0
ROCKHAMPTON AERO 36.8 +5.6 24.2 +4.8 0.0
AMBERLEY AMO 33.7 +4.2 20.0 +3.7 29.4
BRISBANE AERO 29.9 19.9 5.6
ARMIDALE AIRPORT AWS 22.1 9.3 7.6
COFFS HARBOUR MO 23.7 -1.2 17.5 +1.5 11.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 20.3 -3.3 16.2 +0.1 10.4
SYDNEY (OBSERVATORY HILL) 19.9 -3.7 15.2 -0.3 13.4
PROSPECT DAM 21.8 -3.3 14.7 +0.6 6.2
WOLLONGONG UNIVERSITY 18.0 -4.8 13.7 -0.7 28.0
CANBERRA AIRPORT 15.3 -7.2 10.1 +1.5 23.4
WAGGA WAGGA AMO 18.5 -6.9 12.0 +1.5 0.8
MILDURA AIRPORT 20.1 -7.1 11.0 -1.3 0.0
EAST SALE AIRPORT 17.5 -3.5 11.4 +2.0 2.8
MELBOURNE REGIONAL OFFICE 20.6 -1.2 12.2 +1.1 4.4
LAVERTON RAAF 19.1 -2.2 12.1 +2.2 23.4
BALLARAT AERODROME 14.0 -5.4 7.5 -0.2 7.6
LAUNCESTON AIRPORT 13.3 -5.4 8.6 +1.5 2.6
HOBART (ELLERSLIE ROAD) 13.6 -5.0 8.8 -0.4 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
    W Kimberley
CYGNET BAY
40.0mm in 6 hr to 00:00 6.7mm/h
WEST ROEBUCK
11.8mm in 32 min to 17:00 22.1mm/h
11.8mm in 1 hr to 17:00 11.8mm/h
NORTHERN TERRITORY
    Darwin-Daly
JABIRU AIRPORT
7.0mm in 40 min to 22:30 10.5mm/h
BATCHELOR AERO
21.2mm in 16 min to 01:30 79.5mm/h
25.2mm in 1 hr to 01:30 25.2mm/h
29.0mm in 3 hr to 03:00 9.7mm/h
    Roper-McArthur
BULMAN AWS
14.2mm in 9 min to 17:43 94.7mm/h
36.0mm in 3 hr to 18:00 12.0mm/h
15.0mm in 3 hr to 21:00 5.0mm/h
    Darwin-Daly
BRADSHAW
7.0mm in 9 min to 19:30 46.7mm/h
QUEENSLAND
    N Peninsula
COEN AIRPORT
10.2mm in 1 hr to 08:00 10.2mm/h
    Wide Bay/Burnett
GLADSTONE AIRPORT
8.8mm in 33 min to 14:59 16.0mm/h
    Brisbane/SE Coast
NAMBOUR DPI
8.6mm in 19 min to 14:19 27.2mm/h
7.8mm in 41 min to 15:00 11.4mm/h
16.4mm in 1 hr to 15:00 16.4mm/h
16.0mm in 3 hr to 15:00 5.3mm/h
HERVEY BAY AIRPORT
17.2mm in 1 hr to 03:00 17.2mm/h
20.0mm in 3 hr to 03:00 6.7mm/h
MAROOCHYDORE AERO
8.6mm in 25 min to 15:00 20.6mm/h
TEWANTIN RSL PARK
19.4mm in 18 min to 15:18 64.7mm/h
20.0mm in 1 hr to 16:00 20.0mm/h
20.0mm in 3 hr to 18:00 6.7mm/h
NEW SOUTH WALES
    MidNorth Coast N
SOUTH WEST ROCKS (SMOKY CAPE LIGHTHOUSE)
15.0mm in 3 hr to 21:00 5.0mm/h
    Hunter Valley
PATERSON (TOCAL AWS)
37.2mm in 1 hr to 19:00 37.2mm/h
    C Tablelands S
MOUNT BOYCE AWS
10.4mm in 1 hr to 17:00 10.4mm/h
    South Coast
ULLADULLA AWS
13.4mm in 1 hr to 12:00 13.4mm/h
20.0mm in 3 hr to 12:00 6.7mm/h
11.4mm in 1 hr to 13:00 11.4mm/h
    Riverina E
DENILIQUIN AIRPORT AWS
6.6mm in 4 min to 18:03 99.0mm/h

NORTHERN TERRITORY
    Darwin-Daly
BRADSHAW : 89(160/ 72 ) at 19:09