Monday 29 SEP 2003

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2003

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Cold, stormy and very wet in southern WA
Snow in TAS, VIC, NSW
Fires continue in NE NSW

The weather chart for 2pm WST shows a double-centred low in a trough lying from offshore Perth to the Kimberley and moving slowly southeast. Very warm, dry and sunny conditions prevailed north of the trough while cold, windy weather occurred to the south. Modest levels of moisture, which have been feeding down from northern Australia over the past few days, interacted with cold upper air to produce strong instability and middle atmosphere uplift along and to the south of the trough where thunderstorms, some severe, dumped up to 80mm of rain.

Torrential thunderstorm rainfall fell across much of southern WA today in an unusual weather setup that also saw huge temperature extremes. The chart and explanation at right sets the scene.

The trough that triggered heavy showers and widespread thunderstorms brought falls of up to 30mm around Perth in a few hours before 9am -- coastal Swanbourne in Perth's western suburbs recorded 27mm between 6 and 9am. Thunderstorms were sporadic but widely spread throughout the day south of and along the troughline with the heaviest falls generally progressing eastward, steered by the upper-level flow.

Very heavy rain fell at, and to the north and east of Albany between about 9am and 9pm. In the 24 hours to 9am Tuesday, White Gums, 50km north of the city, recorded 81.4mm, Mettler, 75km NE, 77.8, and Bremmer Bay, 150km ENE, 69.4. Albany itself received 66.2 at the airport. Other high falls are given here. Mount Barker, Mettler, Albany Airport and Norseman set significant new September one-day rainfall records -- Mount Barker and Norseman's were the heaviest in nearly 100 years of record, while Mettler's was more than twice the previous record. Details are here.

While the falls were welcomed by farmers expecting a bumper crop, shire engineers were less happy. In Plantagenet Shire, a number of roads were closed by up to two metres of water that cut through graded roads along creek lines.

Maximum temperatures to 3pm reflected the strong temperature differences across the trough. In the south, maxima struggled to reach mid-teens, with Mount Barker reaching only 11, Katanning and Ongerup 12 and Eucla 13 (8 below normal). To the north, Eneabba recorded 30 and Carnegie 37, 7 or 8 above normal.

Snow fell to low levels in TAS both overnight and through the day, giving some of the best snow depths reported from Bureau stations so far this season. At 9am, Lake St Clair reported 14cm of level snow, Tarraleah Village 10 and Cradle Mountain Airfield 3. Maydena, 275m above sea level, reported snow falling but not settling before 9am and during the day. Snow was also reported falling at Palmers Lookout (191m asl) behind Port Arthur, Lake Leake (580m) in the northeast, and patchy snow was on the ground at Strathgordon (322m) at 9am. South coastal observers reported the snowline down to 2,000 feet and hail through the day. The temperature at the automatic weather station atop Mt Read (1120m) behind Zeehan didn't get above -0.7 all day.

In VIC, Omeo (685m) reported snow falling around dawn, and Melbourne's central city weather station reported hail at midday with a temperature of 10C. In NSW, Bombala PO (705m) reported sleet at 9am.

Scores of fires continue to burn in NE NSW, with patrol, containment and backburning work continuing in favourable weather conditions. Today's fire count from the RFS is Tenterfield area 10, Severn 2, Kempsey 3, Nambucca 1, Hastings 11, Great Lakes 2, Gloucester 1.

Sources: NSW RFS, Albany & Great Southern Weekender

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

40.4 FITZROY CROSSING AERO W Kimberley WA
40.0 CADJEBUT W Kimberley WA
40.0 CURTIN AERO W Kimberley WA
40.0 JABIRU AIRPORT N Rivers NT
39.8 KIMBERLEY RES.STATION E Kimberley WA

+10.6   38.1 WARBURTON AIRFIELD Interior WA
+9.6   36.6 ALICE SPRINGS AIRPORT N Plateau NT
+9.1   36.3 GILES METEOROLOGICAL OFFICE Interior WA
+8.1   36.5 CARNEGIE Interior WA
+7.6   36.6 YULARA AERO N Plateau NT

28.0 NORTHERN ENDEAVOUR Islands ISL
27.4 WYNDHAM N Kimberley WA
26.4 ARGYLE AERODROME E Kimberley WA
26.3 TROUGHTON ISLAND N Kimberley WA
26.0 KURI BAY N Kimberley WA
26.0 WARRUWI N Rivers NT

+12.5   23.5 WARBURTON AIRFIELD Interior WA
+11.3   24.1 GILES METEOROLOGICAL OFFICE Interior WA
+7.5   12.9 BROOKTON Cent Wheatbelt WA
+7.5   21.0 TE KOWAI EXP STN Central Coast E QLD
+7.4   22.0 MACKAY AERO Central Coast E QLD
+7.4   25.8 VICTORIA RIVER DOWNS N Rivers NT

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

-1.0 FALLS CREEK Upper NE VIC
-0.8 MT HOTHAM Upper NE VIC
-0.6 MOUNT WELLINGTON Southeast TAS
-0.5 MOUNT READ W Coast TAS
0.0 MOUNT BULLER Upper NE VIC
0.0 MT BAW BAW W Gippsland VIC

-7.4   14.6 BALLADONIA Eucla WA
-6.5   16.0 NULLARBOR W Agricultural SA
-6.3   8.8 OMEO Upper NE VIC
-6.1   10.9 LAKES ENTRANCE E Gippsland VIC
-6.0   11.8 ONGERUP Cent Wheatbelt WA

-6.5 MT HOTHAM Upper NE VIC
-6.0 MOUNT BULLER Upper NE VIC
-5.9 GLEN INNES AIRPORT AWS N Tablelands W NSW
-5.5 WOOLBROOK (DANGLEMAH ROAD) NW Slopes S NSW
-5.5 MOUNT WELLINGTON Southeast TAS

-7.8   0.5 WALGETT AIRPORT AWS NW Plains W NSW
-7.8   -0.9 CESSNOCK AIRPORT AWS Hunter Valley NSW
-7.3   -5.5 WOOLBROOK (DANGLEMAH ROAD) NW Slopes S NSW
-7.1   1.4 YARRAS (MOUNT SEAVIEW) MidNorth Coast S NSW
-6.8   0.9 CESSNOCK (NULKABA) 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.

71.2 YELLANUP Lower West WA
42.2 LAKE ECHO POWER STATION Central Plateau TAS
38.0 KENTBRUCK (MOUNT RICHMOND) W Coast VIC
37.4 DROUIN (POST OFFICE) W Gippsland VIC
35.0 NEILREX (CAIGAN) CW Slopes N NSW

WESTERN AUSTRALIA
    Lower West
71.2 YELLANUP

NEW SOUTH WALES
    CW Slopes N
35.0 NEILREX (CAIGAN)

VICTORIA
    W Gippsland
37.4 DROUIN (POST OFFICE)
    W Coast
38.0 KENTBRUCK (MOUNT RICHMOND)

TASMANIA
    Central Plateau
42.2 LAKE ECHO POWER STATION

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 30.8 -1.0 21.4 +3.0 0.2
PERTH AIRPORT 18.5 -1.6 11.7 +2.8 14.6
ALBANY AIRPORT 12.7 -4.6 11.1 +3.1 6.4
KALGOORLIE-BOULDER AIRPORT 25.7 +3.5 11.6 +3.7 1.6
DARWIN AIRPORT 35.4 +2.9 24.9 +1.8 0.0
ALICE SPRINGS AIRPORT 36.6 +9.6 10.0 -0.2 0.0
ADELAIDE (KENT TOWN) 14.9 -3.9 5.3 -4.3 0.0
MOUNT GAMBIER AERO 12.7 -3.1 3.1 -3.1 3.2
CAIRNS AERO 29.5 +1.6 20.4 +1.8 0.0
TOWNSVILLE AERO 29.5 +1.8 22.1 +4.8 0.0
ROCKHAMPTON AERO 29.5 +2.3 16.9 +3.4 0.0
AMBERLEY AMO 29.1 +3.8 6.4 -3.0 0.0
BRISBANE AERO 24.3 10.5 0.0
ARMIDALE AIRPORT AWS 18.2 2.7 0.0
COFFS HARBOUR MO 24.6 +2.8 6.6 -4.3 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 23.3 +3.2 9.2 -2.1 0.0
SYDNEY (OBSERVATORY HILL) 23.0 +3.1 10.5 -0.5 0.0
PROSPECT DAM 22.3 +1.3 5.9 -3.4 0.0
WOLLONGONG UNIVERSITY 23.4 +3.2 7.8 -2.8 0.0
CANBERRA AIRPORT 14.0 -2.0 4.2 +1.1 0.0
WAGGA WAGGA AMO 13.4 -4.0 5.7 +0.5 0.0
MILDURA AIRPORT 16.4 -3.9 7.3 -0.1 0.0
EAST SALE AIRPORT 13.1 -3.8 5.4 -0.2 1.8
MELBOURNE REGIONAL OFFICE 13.9 -3.3 6.2 -1.7 0.6
LAVERTON RAAF 13.5 -3.3 3.7 -2.9 0.8
BALLARAT AERODROME 9.6 -4.2 0.7 -4.2 2.6
LAUNCESTON AIRPORT 11.5 -2.6 1.3 -2.9 5.6
HOBART (ELLERSLIE ROAD) 10.7 -4.3 4.0 -2.4 2.0

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
    Lower West
PERTH AIRPORT
16.0mm in 3 hr to 09:00 5.3mm/h
JANDAKOT AERO
17.0mm in 3 hr to 09:00 5.7mm/h
SWANBOURNE
10.4mm in 1 hr to 08:00 10.4mm/h
15.2mm in 1 hr to 08:30 15.2mm/h
27.0mm in 3 hr to 09:00 9.0mm/h
BICKLEY
17.0mm in 3 hr to 09:00 5.7mm/h
    SW & S Coast
ALBANY
33.0mm in 6 hr to 15:00 5.5mm/h
ESPERANCE AERO
10.2mm in 1 hr to 19:30 10.2mm/h
13.0mm in 1 hr to 20:00 13.0mm/h
23.0mm in 3 hr to 21:00 7.7mm/h
ALBANY AIRPORT
18.0mm in 3 hr to 12:00 6.0mm/h
21.0mm in 3 hr to 15:00 7.0mm/h
ESPERANCE
18.0mm in 3 hr to 21:00 6.0mm/h
    Gt Southern
ONGERUP
35.0mm in 6 hr to 15:00 5.8mm/h
    Goldfields
NORSEMAN AERO
6.8mm in 16 min to 17:19 25.5mm/h
10.4mm in 1 hr to 18:00 10.4mm/h
21.0mm in 3 hr to 18:00 7.0mm/h
CHEADANUP
4.0mm in 6 min to 06:02 40.0mm/h
NORSEMAN
22.0mm in 3 hr to 18:00 7.3mm/h
SALMON GUMS RES.STN.
14.0mm in 1 hr to 19:00 14.0mm/h
17.0mm in 3 hr to 21:00 5.7mm/h

WESTERN AUSTRALIA
    Interior
WARBURTON AIRFIELD : 82(280/ 65 ) at 21:05
NEW SOUTH WALES
    South Coast
GREEN CAPE AWS : 91(240/ 65 ) at 15:29
    Snowy Mtns
THREDBO AWS : 76(320/ 63 ) at 02:00
VICTORIA
    Upper NE
MOUNT BULLER : 95(340/ 63 ) at 00:30
    W Gippsland
WILSONS PROMONTORY LIGHTHOUSE : 119(240/ 72 ) at 02:50
KINGFISH B SHIP LOG 272 : 91(224/ 70 ) at 06:30
TASMANIA
    N Coast
CAPE GRIM B.A.P.S. : 102(240/ 83 ) at 00:00
    Southeast
MOUNT WELLINGTON : 83(210/ 65 ) at 00:42
TASMAN ISLAND : 98(200/ 54 ) at 06:02
CAPE BRUNY (CAPE BRUNY) : 89(250/ 70 ) at 06:02
ISLANDS
    Islands
HOGAN ISLAND : 96(260/ 76 ) at 00:11