Australian Weather News


Wednesday, 06 JUN 2001

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Overnight thunderstorms bring record June rainfall to South Australia
Warm night across central eastern Australia
Woomera radar at 1.20am CST (above) and the surface chart for 9.30pm Tuesday (below) BoM. The water vapour image for 1am (bottom) shows high humidity ahead of the front and wrapping around the low, while a tongue of very dry air feeds into the core. NPMOC
Several long-standing rainfall records for June were broken in an unusual manner overnight, as severe thunderstorms raked northern and central South Australia. Heavy rain is unusual in June in this area, and tends to fall in rainbands ahead of frontal systems rather than from active thunderstorms. Last night, however, after several days of warm, fairly moist northerlies over the state, a deep upper low with cold air aloft curled northeast across the head of the Bight then east across central northern South Australia. Although temperatures at the surface remained balmy, they dropped to only 3 at 850hPa or around 1.4km, setting up some explosive convection. 

The most active area developed north of Woomera late yesterday evening and moved SE through the night, giving falls from 30 to over 50mm. Olympic Dam airfield at Roxby Downs, 70km north of Woomera, recorded 27.8mm in 2 hours to midnight, Woomera recorded 31.6mm in 2 hours to 4am, and Whyalla Airport recorded 30.0mm in the hour to 7am. 

Other storms brought Whyalla town's 24 hour to 9am total to 58.6mm, the heaviest June one-day fall in nearly a century of readings. Woomera also made the record books, its 24 hour total of 48mm the heaviest in 51 years, and equal to a quarter of the town's average annual rainfall. Farther west, just over the SA/WA border, Eucla recorded 54mm, easily breaking a previous record of 38.3mm in 88 years of record. Most of Eucla's rain fell overnight from the cloudmass returning around the western side of the upper low

During the day, the interaction of contrasting airmasses dramatically deepened a surface low on the SA west coast during the morning, dropping it to 997hPa by 9.30am CST and bringing gales in the Bight, and wind gusts to 89km/h at Forrest, 120km inland in southeastern WA. An attendant cold front amplified to the east and southeast, carrying the area of storms and heavy showers across Adelaide, where the Kent Town gauge recorded 29mm between 3 and 6pm, and into western NSW and Victoria. 

It was an exceptionally warm night for June across parts of the eastern inland. An area covering SE SA, NW NSW, SW Queensland and SE NT recorded minimum temperatures 8 to 11 above average, with Thargomindah's 19 recording some 11.9 above the norm. Warm conditions continued during the day in the east, with Tidbinbilla, southwest of Canberra, recording its highest June temperature in 15 years. Meanwhile, on the other side of the continent, Kalbarri, on the coast north of Perth, recorded its lowest June minimum in 26 years of record. 

Data provided by the Bureau of Meteorology
Last updated at 17:18 EDST on 06/06/01

Quality control note: Data is not yet complete. It is as received in real time, and may contain errors. See Explanation of Extremes Pages for more information
Records set this day (previous record and years of computerised record shown in brackets):
Highest daily rainfall for June:
Eucla WA: 54.0 (36.3, 88)
Woomera AP SA: 48.0 (41.0, 51)
Whyalla (Norrie) SA: 58.6 (50.3, 94)
Whyalla AP SA: 42.0 (28.8, 19)
Lowest minimum temperature for June:
Kalbarri WA: 2.9 (3.2, 26)
Highest maximum temperature for June:
Tidbinbilla Nature Reserve ACT: 17.8 (17.6, 15)

Todays highest rainfall totals for the 24 hours to 9am. It includes the top 5 totals received, and/or all reported falls of 50mm or more.

58.6 WHYALLA (NORRIE) W Agricultural SA
54.0 EUCLA Eucla WA
48.0 WOOMERA AERODROME NW Pastoral SA
48.0 GLENDAMBO NW Pastoral SA
43.3 IRON KNOB W Agricultural SA

WESTERN AUSTRALIA
    Eucla
54.0 EUCLA

SOUTH AUSTRALIA
    NW Pastoral
48.0 WOOMERA AERODROME
48.0 GLENDAMBO
    W Agricultural
58.6 WHYALLA (NORRIE)
43.3 IRON KNOB

High rainfall for periods of 6 hours or less.


SOUTH AUSTRALIA
    NW Pastoral
WOOMERA AERODROME
31.0mm in 3 hr to 03:00 10.3mm/h
15.4mm in 30 min to 03:30 30.8mm/h
23.6mm in 1 hr to 03:30 23.6mm/h
20.2mm in 1 hr to 04:00 20.2mm/h
    W Agricultural
WHYALLA (NORRIE)
36.0mm in 3 hr to 06:00 12.0mm/h
    Lower North
CLARE HIGH SCHOOL
1.8mm in 1 min to 15:31 108.0mm/h
    Adelaide Plains
PARAFIELD AIRPORT
7.0mm in 3 min to 17:18 140.0mm/h
11.8mm in 12 min to 17:30 59.0mm/h
24.6mm in 1 hr to 17:30 24.6mm/h
21.0mm in 1 hr to 18:00 21.0mm/h
ADELAIDE (KENT TOWN)
20.2mm in 30 min to 17:30 40.4mm/h
22.0mm in 1 hr to 17:30 22.0mm/h
27.0mm in 1 hr to 18:00 27.0mm/h

Todays highest & lowest temperatures

Maximum Minimum
35.0 KALUMBURU N Kimberley WA
34.0 WYNDHAM AERO N Kimberley WA
34.0 KALUMBURU MISSION N Kimberley WA
33.5 WYNDHAM POST OFFICE N Kimberley WA
33.0 JABIRU AIRPORT Darwin-Daly NT
33.0 TIMBER CREEK Victoria NT
33.0 BRADSHAW Darwin-Daly NT
27.0 NORTHERN ENDEAVOUR Islands
26.5 CADJEBUT W Kimberley WA
25.0 COCONUT ISLAND N Peninsula QLD
24.0 MCCLUER ISLAND Darwin-Daly NT
23.9 HORN ISLAND N Peninsula QLD
5.0 THREDBO (CRACKENBACK STATION) AWS Snowy Mtns NSW
5.2 MT HOTHAM Upper NE VIC
5.9 FALLS CREEK Upper NE VIC
6.0 MOUNT BULLER Upper NE VIC
7.1 MOUNT WELLINGTON Southeast TAS
-5.5 COOMA VISITORS CENTRE Goulburn/Monaro NSW
-3.5 THREDBO VILLAGE Snowy Mtns NSW
-3.2 BOMBALA POST OFFICE Goulburn/Monaro NSW
-2.7 NERRIGA COMPOSITE South Coast NSW
-2.4 BOMBALA AWS Goulburn/Monaro NSW

Todays greatest temperature variations from normal

Maximum Minimum
+8.7   31.8 BOULIA AIRPORT Channel Country QLD
+8.2   21.9 WAGGA WAGGA AMO SW Slopes S NSW
+8.1   23.0 GRIFFITH AIRPORT AWS Riverina W NSW
+8.0   19.0 TARALGA POST OFFICE Goulburn/Monaro NSW
+7.9   20.8 HUME RESERVOIR SW Slopes S NSW
+11.9   19.0 THARGOMINDAH POST OFFICE COMPARISON Far SW QLD
+11.8   19.8 BIRDSVILLE POLICE STATION Channel Country QLD
+11.3   16.7 WILCANNIA (REID ST) Far Northwest NSW
+10.7   15.4 ARKAROOLA NE Pastoral SA
+10.6   17.0 JERVOIS Alice Springs NT
-6.5   14.0 WARBURTON AIRFIELD Interior WA
-5.9   13.8 WILUNA Interior WA
-5.8   13.0 BADGINGARRA RESEARCH STN Lower West WA
-5.5   15.7 THREE RIVERS E Gascoyne WA
-5.4   13.8 YEELIRRIE Goldfields WA
-8.8   1.0 PEARCE RAAF Lower West WA
-8.4   -1.5 THREE RIVERS E Gascoyne WA
-8.2   2.9 KALBARRI Central West WA
-7.3   1.8 PERTH AIRPORT Lower West WA
-7.1   3.8 LANCELIN Lower West WA

Highest wind gusts above 89km/h or mean wind above 62km/h (gale force). Wind direction and mean windspeed shown in brackets.

NORTH RANKIN PLATFORM E Pilbara WA : *** (120/ 63 ) at 00:00
FORREST Eucla WA : 89 (240/ 63 ) at 11:35

Other extremes

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