Friday 22 AUG 2003

Home
Daily Weather
Summary indexes
2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003
Previous years

About:
The National Extremes
Australian Weather News
Other weather event archives:
BoM Severe Weather Summaries
Find a place:
Australian Gazeteer
Whereis
Jargon busters:
WeatherZone | BoM | American Met Soc

2003

Dec

M Tu W Th F Sa Su
01 02 03 04 05 06 07
08 09 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31        

Nov

M Tu W Th F Sa Su
          01 02
03 04 05 06 07 08 09
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30

Oct

M Tu W Th F Sa Su
    01 02 03 04 05
06 07 08 09 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31    

Sept

M Tu W Th F Sa Su
01 02 03 04 05 06 07
08 09 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30          

August

M Tu W Th F Sa Su
        01 02 03
04 05 06 07 08 09 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31

July

M Tu W Th F Sa Su
  01 02 03 04 05 06
07 08 09 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      

June

M Tu W Th F Sa Su
            01
02 03 04 05 06 07 08
09 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30            

May

M Tu W Th F Sa Su
      01 02 03 04
05 06 07 08 09 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31  

April

M Tu W Th F Sa Su
  01 02 03 04 05 06
07 08 09 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30        

March

M Tu W Th F Sa Su
          01 02
03 04 05 06 07 08 09
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            

February

M Tu W Th F Sa Su
          01 02
03 04 05 06 07 08 09
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28    

January

M Tu W Th F Sa Su
    01 02 03 04 05
06 07 08 09 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31    

 

Rain, gales, hail and rare low-level snow in WA

Above: IR satellite hourly images from midnight to 8pm WST. The cold air pool is marked by the bright (cold) cloudmass that begins to cross the southwest coast at 2am, and the attached second dumbelling cloudmass that crosses the coast at 9am. The two continue to dumbell as they move ENE into the area north of Kalgoorlie. Weatherzone, BoM. (GMS-5 backup with GOES-9 operated by the joint effort of JMA and US NOAA NESDIS over the Western Pacific)
Below: Surface chart (coloured contours) and 1000-500hPa thickness chart (black contours) for 8pm Thursday and 8am and 8pm WST today. At the surface, a low of around 990hPa skirts the WA South Coast, weakening to around 997hPa by 8pm today. The thickness contours show a very cold airmass curling around the upper low, which lay just to the north of the surface low. COLA
Bottom:
The upper air chart at 500hPa shows a closed low developing and deepening rapidly in the trough between 8pm yesterday and 8 this morning before moving east and weakening. COLA

In a rare event for WA, snow fell to low levels in parts of the Great Southern this morning. Snow is reported every year or two on the Stirling Ranges, which rise to about 1000m north of Albany, but is seldom experienced elsewhere in the state.

The most significant reports of snow came from an area north to northeast of the Stirlings. Light falls were reported at Gnowangerup, Ongerup and Jerramungup, all 200 to 300m above sea level. At Ongerup, snow fell continuously from around 7am to 7.40am, and the 2 to 3cm that accumulated was enough to bring the town's 500 residents out to enjoy snowfights. The West Australian claimed it was the town's first significant snowfall in 50 years. The paper also reported that a farm 20km NW of Ongerup received 5 to 7cm accumulation. The ABC reported that snow lay on a farm near Jerramungup for about half an hour with the temperature at 1C. Reports of snow also came on the Weatherzone Forum from Woogenellup, located on the southern side of the Stirlings, 20km NE of Mt Barker.

The charts and satellite images at right give some clues to the cause of this rare event. An upper low developed rapidly in the upper trough as it moved over the southern wheat belt and Great Southern mid morning. The coldest air actually curled around this low farther to the north of the Stirlings. At 9am, the freezing level was about 1,500m above Albany, but 1,300m over Perth and 1,400m over Meekatharra. At 9am, the surface low was situated about 200km east of Albany, shooting a tongue of cold but moist air onto the Stirlings, and into an area of high instability, with tot-tots ratings around 55.

The satellite animation shows the leading edge of the snow-bearing cloud mass crossing the coast west of Albany around 2am and moving over the area of the Stirlings around 7am. Heavy rain fell from this cloud soon after the snow, with local flooding reported along the North Stirling Road. Jacup, 70km east of Ongerup, recorded 16mm between 9am and noon (and a noon temperature of 6.6C!)

Hail was reported in the strong, squally southwesterly stream during the day. Wind gusted to 111km/h on Rottnest Island, and roof and tree damage was reported in Albany and Walpole on the South Coast. Most locations west of a line from Carnarvon to Esperance recorded 30 to 40mm out of the event, with Perth Metro registering 41.6mm and Karnet 56.4.

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

36.8 ELLIOTT N Plateau NT
36.0 WYNDHAM AERO N Kimberley WA
35.5 ARGYLE AERODROME E Kimberley WA
35.4 WARMUN E Kimberley WA
35.2 LONGREACH AERO Central West QLD

+10.1   34.0 WINDORAH POST OFFICE Channel Country QLD
+9.9   32.4 ALICE SPRINGS AIRPORT N Plateau NT
+9.5   34.5 JERVOIS N Plateau NT
+9.3   35.2 LONGREACH AERO Central West QLD
+9.3   35.0 BOULIA AIRPORT Channel Country QLD

25.3 DARWIN AIRPORT COMPARISON N Rivers NT
25.3 DUM IN MIRRIE AWS N Rivers NT
25.2 DARWIN AIRPORT N Rivers NT
25.0 POINT FAWCETT Islands ISL
24.9 TROUGHTON ISLAND N Kimberley WA
24.9 MCCLUER ISLAND N Rivers NT

+11.1   16.1 TAMBO POST OFFICE Central Highlands QLD
+9.1   13.0 MITCHELL POST OFFICE Maranoa QLD
+8.5   13.3 ROMA AIRPORT Maranoa QLD
+8.2   21.5 MCARTHUR RIVER MINE N Rivers NT
+8.2   17.5 BARCALDINE POST OFFICE Central West QLD
+8.2   12.5 INJUNE POST OFFICE Maranoa QLD

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

1.3 FALLS CREEK Upper NE VIC
2.0 MOUNT BULLER Upper NE VIC
2.2 GRAFTON RESEARCH STN North Coast NSW
2.6 MT HOTHAM Upper NE VIC
3.0 THREDBO AWS Snowy Mtns NSW

-7.7   15.3 THREE RIVERS E Gascoyne WA
-7.3   12.3 PAYNES FIND E Gascoyne WA
-7.2   14.5 WILUNA Interior WA
-7.1   14.1 MEEKATHARRA AIRPORT E Gascoyne WA
-7.0   13.0 MULLEWA Central West WA

-4.1 GLEN INNES AIRPORT AWS N Tablelands W NSW
-3.7 MELTON MOWBRAY (NORTH STOCKMAN) Southeast TAS
-3.2 ARMIDALE (UNI NEW ENGLAND) N Tablelands W NSW
-3.1 LAKE LEAKE (ELIZABETH RIVER) E Coast TAS
-3.0 THREDBO AWS Snowy Mtns NSW

-6.4   3.0 JURIEN BAY Lower West WA
-5.2   0.6 ONGERUP Cent Wheatbelt WA
-4.1   2.2 EYRE Eucla WA
-3.9   3.4 CASINO AIRPORT North Coast NSW
-3.7   -3.1 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.

61.2 SPRINGDALE Lower West WA
58.2 WUNGONG DAM Lower West WA
55.8 KARNET Lower West WA
55.6 CLOON Lower West WA
52.0 SERPENTINE MAIN DAM Lower West WA

WESTERN AUSTRALIA
    Lower West
61.2 SPRINGDALE
58.2 WUNGONG DAM
55.8 KARNET
55.6 CLOON
52.0 SERPENTINE MAIN DAM
51.6 JARRAHDALE

  Max+/- norm Min+/- normRain to 9am
BROOME AIRPORT 26.1 -4.2 22.0 +7.0 0.0
PERTH AIRPORT 14.8 -3.6 6.7 -1.3 31.8
ALBANY AIRPORT 14.5 -1.5 6.0 -1.4 20.6
KALGOORLIE-BOULDER AIRPORT 12.9 -5.5 6.3 +0.8 1.2
DARWIN AIRPORT 30.6 -0.7 25.2 +4.7 0.0
ALICE SPRINGS AIRPORT 32.4 +9.9 10.7 +4.7 0.0
ADELAIDE (KENT TOWN) 17.8 +1.3 8.0 -0.2 0.0
MOUNT GAMBIER AERO 14.7 +0.7 7.1 +1.7 5.4
CAIRNS AERO 27.3 +0.8 17.9 +0.5 0.0
TOWNSVILLE AERO 27.6 +1.6 20.9 +6.2 0.2
ROCKHAMPTON AERO 26.2 +1.5 12.4 +1.8 0.0
AMBERLEY AMO 23.8 +1.3 6.0 -0.4 0.0
BRISBANE AERO 21.4 9.8 0.0
ARMIDALE AIRPORT AWS 16.3 0.3 0.0
COFFS HARBOUR MO 21.0 +1.3 6.2 -2.0 0.0
NEWCASTLE NOBBYS SIGNAL STATION AWS 17.6 -0.4 10.3 +1.1 0.0
SYDNEY (OBSERVATORY HILL) 18.9 +1.2 9.0 +0.1 0.0
PROSPECT DAM 19.9 +1.4 6.1 -0.7 0.2
WOLLONGONG UNIVERSITY 17.4 -0.8 7.5 -1.3 0.0
CANBERRA AIRPORT 10.5 -2.4 2.9 +2.0 3.2
WAGGA WAGGA AMO 14.7 +0.3 7.9 +4.3 1.6
MILDURA AIRPORT 17.6 +0.5 3.3 -2.0 2.4
EAST SALE AIRPORT 17.4 +2.4 4.1 0.0 1.8
MELBOURNE REGIONAL OFFICE 17.0 +2.1 7.8 +1.2 0.0
LAVERTON RAAF 16.2 +1.4 7.3 +1.9 0.0
BALLARAT AERODROME 10.6 -0.8 1.9 -1.8 4.2
LAUNCESTON AIRPORT 12.1 +0.1 2.4 -0.6 0.2
HOBART (ELLERSLIE ROAD) 12.2 -0.8 4.4 -0.8 2.2

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
    Gt Southern
JACUP
16.0mm in 3 hr to 12:00 5.3mm/h

WESTERN AUSTRALIA
    Lower West
ROTTNEST ISLAND : 95(220/ 70 ) at 09:31
OCEAN REEF : 93(220/ 58 ) at 11:05
GARDEN ISLAND HSF : 83(230/ 65 ) at 00:01
    SW & S Coast
CAPE LEEUWIN : 98(240/ 72 ) at 03:00
CAPE NATURALISTE : 87(190/ 65 ) at 16:00