|
||||||||||||||||||||||||||||||||||||||||||
|
Friday, 1 July 2005
MONTHLY CLIMATE SUMMARY - SOUTH AUSTRALIAN REGIONAL OFFICE Warm and wet June 2005 over much of South AustraliaJune temperatures were above average across the whole State, while June rainfall was above average over most of the Agricultural areas.June rainfall Pastoral Districts:Rainfall totals were very much above average over parts of the Far North and Northeast districts, but for the most part totals in these two districts were above average. Below to very much below average rainfall was reported from central parts of the Far North district, while over the remainder of this district totals were near averageRainfall totals varied widely. Several stations in the Far North district reported totals in the range 25 to 50mm, while in the Northwest and Northeast districts there were only isolated reports in this range. Totals below 10mm were mostly reported from the Northwest district. The highest rainfall reported in the Pastoral Districts was 56mm at Gluepot Station, in the Northeast district. Agricultural Districts: Rainfall totals which were very much above average were reported from the Mt. Lofty Ranges, Riverland, Murray, Upper Southeast districts, over much of the Adelaide Plains and over isolated parts of parts of the Yorke Peninsula, Lower North and Western Agricutural districts. Near average totals were reported from eastern parts of the Southeast districts and western parts of the Western Agricutural districts. Elsewhere in these districts totals were above average. Rainfall totals above 200mm were confined to the Mt Lofty Ranges districts, while totals in excess of 100mm were reported from the Mt Lofty ranges and Murray Valley districts, and much of the Lower Southeast and Adelaide Plains districts, as well as isolated parts of other districts. There were some isolated totals below 50mm over the Western Agricultural and Northern districts, while over the remainder totals were in the range 50 to 100mm. Several centres had their highest daily and monthly June rainfall on record. See tables below. The highest rainfall recorded in the Agricultural districts during June was 254mm at Mount Compass, in the Mt Lofty Ranges district.
June temperatures Maximum: Mean maximum temperatures for June were between 1°C and 2°C above normal over most of the southern half of the State and mostly up to 1°C above normal over the remainderIn the Pastoral districts mean maximum temperatures ranged from 17.2°C at Arkaroola to 20.8°C at Marla. Mean maximum temperatures over the Agricultural districts ranged from 13.3°C at Mt Crawford, in the Mount Lofty Ranges, to 19.5°C at Ceduna Airport, in the Western Agricultural district. The highest maximum recorded during May was 30.0°C at Nullarbor on the 6th. Minimum: Mean minimum temperatures for June were 1°C to 2°C above normal over central parts of the Agricultural districts and extending up into the Far North district. Elsewhere around the State they were up to 1°C above average. Mean minimum temperatures ranged from 5.0°C at Yongala to 12.7°C at Neptune Island. The lowest minimum temperature recorded during May was minus 3.1°C at Renmark Airport, in the Riverland district on the 3rd. Significant June weather Thunderstorms:On the 10th, a deep low (990hPa) moved through the Bight and an associated front moved across South Australia. A thunderstorm near the front moved across Karoonda at around 8pm and caused significant damage. 18 buildings were damaged as well as substantial tree damage. The damage was most likely caused by a tornado associated with the storm.The 18th saw a deep low (990hPa) in the eastern Bight. An associated trough of low pressure moved across South Australia and resulted in some thunderstorm activity. Extensive tree damage in an area of the Flinders Ranges National Park was reported, which may have been the result of a tornado. The low from the 18th remained fairly stationary in the eastern Bight but deepened (986hPa) on the 19th. Although there was no surface front, there was significant low level shear and instability present. As a consequence a tornado was reported from Kangaroo Island and resulted in significant tree damage near Snelling beach. Some damage was also reported from Emu Bay. The 21st saw the low from the 18th and 19th move slowly east to be near Mount Gambier and weaken slightly (993hPa). A front associated with this low moved across South Australia, and resulted in some building and tree damage in the Adelaide region. A tornado was also likely to have caused some of this damage in the McLaren Flat area. Severe wind gusts were recorded on Eyre and Yorke Peninsulas by Bureau observing stations, while non-Bureau systems recorded severe wind gusts at Outer Harbour and Port Pirie. Severe winds: On the 19th, wind gusts to 95 km/h were reported at Sellicks Hill. Extreme rainfall: Table 1 and table 2 below, show stations which had record daily and monthly rainfall totals for June.
June weather in Adelaide Rainfall: Adelaide’s rainfall for June 2005 was 141.8 mm, recorded on 13 days. This is 58.7 mm above the normal of 83.1 mm on 16 days. This has been the wettest June since 1981 when 174.6 mm was recorded, and the 9th wettest June ever recorded in Adelaide. Last year 125.0mm was recorded in June on 21 days.In the 24 hours to 9am on 21 June 2005 Adelaide received 54.6mm of rain, the highest daily rainfall for June since rainfall records began in Adelaide in 1839. The total rainfall for the first half of 2005 was 212.2 mm, which is 33.1 mm below the long-term average of 245.3mm. Last year 245.8 mm was recorded over the same period. Temperatures: The mean maximum temperature for June 2005 was 17.8°C, which is 1.7°C above the normal June mean maximum of 16.1°C. This has been the warmest mean maximum for June since 1967, when the mean maximum was 17.9°C, and the third warmest June mean maximum ever recorded in Adelaide. The warmest June mean maximum was 20.4°C and occurred in 1957. The mean maximum last year was 16.3°C. The mean minimum temperature for June 2005 was 9.1°C, which is 0.9°C above the average June mean minimum of 8.2°C. Last June, the mean minimum was 9.6°C.
Ends
Further information:
|
