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SIGNIFICANT WEATHER - JUNE 1999
Active cold fronts over the southwest of Western Australia produced strong winds and tornadoes. One of these later produced thunderstorms over southern parts of South Australia. Some locations in the Northern Territory reported highest monthly rainfall records for June.
Queensland The development of an intense low in the Tasman Sea caused strong to gale force winds across southeast Queensland during the 13th and 14th. South Australia A dust storm on Eyre Peninsula in the afternoon of the 12th was settled by rain later in the day as a rapidly moving front moved in from the west. The front with associated strong winds caused power blackouts across the central districts overnight of the 12th and 13th. A lightning strike disrupted telephone services to parts of the Adelaide Hills. Falling trees caused damage to powerlines and houses. Adelaide's maximum temperature for the 13th only reached 10.6oC the coldest June day since 1987. Western Australia On the 11th an active cold front produced strong winds near the lower west and southwest coasts. Cape Leeuwin registered gusts to 102 km/h and several other localities reported gusts to 80 km/h. In the Perth metropolitan area high winds in the early hours of the morning interrupted power supplies, removed tiles from roofs and blew trees onto several houses in suburban Mount Pleasant. On the 17th a tornado cut a swathe of damage 50 to 80 metres wide that extended for approximately 6 kilometres in the Rockingham/Waikiki/Safety Bay area (60 kms south of Perth). Wind speeds were estimated to have reached 150 to 170 km/h. About 100 houses and a school were damaged by the tornado, of which several houses sustained severe structural damage. On the 22nd a tornado struck Australind (north of Bunbury). About 12 houses were damaged along a 400 metre path that was 25-50 metres wide. The tornado travelled in a northwest to southeast direction and was associated with a convergence line ahead of a cold front.
New South Wales On the 21st at Mourbra (Metropolitan) 2cm hail was reported. The hail drifts lasted for five hours. On the 22nd Noraville (Hunter) reported 2cm hail and 55mm of rain fell in 30 minutes. Tasmania Thunderstorms associated with the passage of a cold front through Bass Strait occurred in the north of the State causing some power blackouts on the 13th. South Australia On the 17th thunderstorms caused damage to properties south of Adelaide. The thunderstorms crossed the southern parts of the settled areas affecting Kangaroo Island, southern Mt. Lofty Ranges and Lower Southeast. Significant damage was caused to four houses and some shedding at Aldinga, a coastal community south of Adelaide, when a storm squall struck the area.
South Australia A fog bank slowly extended across the Adelaide Plains during the morning of the 7th. Visibility was reduced to 100 metres at Adelaide Airport for most of the morning causing delays. Visibility was reduced to between 200 - 500 metres at other locations. The fog gradually cleared from the north later in the morning. The last time fog occurred in June was in 1995. On the 26th a dense fog bank settled over the eastern half of the state. The fog spread south and east from Broken Hill, extending to the Murray mouth and across to Lameroo in the Murray Mallee. It was not until the afternoon of the 27th that the fog began to disperse.
Highest Daily Maximum Temperature for June
Previous Years of
Station Actual Date Highest Year Record
C C
Queensland
Cairns A/P 30.2 1 30.1 1995 58
Tasmania
Burnie 18.8 1 18.4 1988 34
St Helens PO 21.6 1 21.1 1988 41
Lowest Daily Minimum Temperature for June
Previous Years of
Station Actual Date Lowest Year Record
C C
Queensland
Lady Elliot Is 7.9 19 9.0 1975 43
Northern Territory
Flying Fox 3.2 28 5.6 1977 22
Highest Monthly Rainfall on Record for June
Previous Years of
Station Actual Highest Year Record
mm mm
Northern Territory
Mount Riddock 60.0 36.6 1973 26
The Garden 64.6 46.8 1956 45
Indiana 61.0 45.5 1973 34
Lowest Monthly Rainfall on Record for June
Previous Years of
Station Actual Lowest Year Record
mm mm
Tasmania
Bagdad PO 8.4 9.2 1966 73
Colebrook 4.0 4.4 1979 84
Park Beach 8.8 9.2 1979 37
Maurieton (Jordan River)
8.0 8.2 1966 52
Bothwell (Cluny) 1.8 7.6 1950 84
Lake Echo (Power Station)
21.0 24.2 1979 41
Highest Daily Rainfall on Record for June
Previous Years of
Station Actual Date Highest Year Record
mm mm
Northern Territory
Mount Riddock 24.0 8 21.0 1978/93 26
Note: Some statistical records mentioned in this report are based on data that have yet to be fully validated.
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