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Wednesday, 30 November 2011 - Monthly Climate Summary for Adelaide Metro & Hills - Product code IDCKGC13R0
Rainfall totals in the Adelaide region were generally below average for November 2011. Much of the month's rainfall was recorded in the last week of November associated with the passage of a series of low pressure troughs and frontal systems.
A total of 25.2 mm of rainfall was recorded over 10 rain days at Adelaide (Kent Town) during November 2011, 6.2mm below the long term November average of 31.5 mm for this site, occurring on an average of 8 days of rain. November 2010 saw 23.2mm of rainfall recorded, with the driest November at the Adelaide (Kent Town) site being 1.0mm in 1996. Median rainfall for November is 30.3 mm (Note: the rainfall total for the period is from the manually observed 203mm rain gauge making up the long term rainfall record. This may differ from totals on the Bureau's webpage as these may be from the automatic tipping bucket rain gauge).
Year-to-date rainfall (January to November 2011) at Adelaide (Kent Town) stands at 519.6 mm, slightly above than the long-term year-to-date average of 516.2 mm. Last year, 505.6 mm was recorded over the same 11-month period. Well above average rainfall for the first three months of the year and generally drier than normal conditions since April have kept rainfall totals near the long term average across the Adelaide Hills and Metropolitan area for 2011.
Rainfall totals varied across the Adelaide metropolitan area and Mount Lofty Ranges, however most were generally below average, ranging between about 15 mm to 30mm on the Adelaide plains and between 20 mm to 35 mm in the hills. These rainfall totals range between 50 to 80% of the average November rainfall. The highest rainfall reading was 49.2 mm at Athelstone (Black Hill).
Average monthly maximum temperatures were up to 2.0°C above average for November 2011 across the Adelaide metropolitan and hills area. The warmest days were experienced between the 17th and 19th of the month, where north to north westerly winds were directed over the region ahead of a low pressure trough.
The November 2011 mean maximum temperature at Adelaide (Kent Town) was 26.7°C which is 1.5°C above the long-term mean maximum temperature. In comparison, November 2010 saw below average maximum temperatures of 24.3°C at Adelaide (Kent Town). November 2009 was the warmest on record for this site, with 30.8°C.
The hottest day for in November 2011 in the Adelaide region was on the 18th, recorded at both Edinburgh RAAF and Parafield Airport where the maximum temperature reached 38.3°C. Parafield Airport recorded the warmest days on average, with maximum temperatures averaging 28.0°C for the month.
The coldest November day in 2011, at Adelaide (Kent Town), was on the 25th, with the maximum only reaching 18.7°C, and the coldest maximum temperature recorded in the Adelaide & hills area being 14.9°C at Mt Lofty. The coolest days on average were recorded at Mount Lofty, where maximum temperatures averaged 20.9 °C.
Mean minimum temperatures were close to 1.0°C above average this November. The mean minimum temperature for November 2011 at Adelaide (Kent Town) was 14.7°C, which is 0.7C above the long-term mean minimum temperature.
The coolest nights on average were recorded at Mount Lofty, where minimum temperatures averaged 10.2 °C. The coldest minimum temperature recorded for the month in the Adelaide and hills area was 4.7°C on the 24th at Mount Lofty, whilst the warmest night was 24.6°C at Noarlunga on the 18th.
|Extremes in November 2011|
38.3 °C at Edinburgh RAAF on the 18th|
38.3 °C at Parafield Airport on the 18th
|Warmest days on average||28.0 °C at Parafield Airport|
|Coolest days on average||20.9 °C at Mount Lofty|
14.9 °C at Mount Lofty on the 10th|
14.9 °C at Mount Lofty on the 25th
|Coldest night||4.7 °C at Mount Lofty on the 24th|
|Coolest nights on average||10.2 °C at Mount Lofty|
|Warmest nights on average||14.7 °C at Adelaide (Kent Town)|
|Warmest night||24.6 °C at Noarlunga on the 18th|
|Warmest on average overall||20.9 °C at Adelaide (Kent Town)|
|Coolest on average overall||15.6 °C at Mount Lofty|
|Wettest overall||49.2 mm at Athelstone (Black Hill)|
|Highest wind gust||
67 km/h at Edinburgh RAAF on the 9th|
67 km/h at Edinburgh RAAF on the 18th
|Summary statistics for November 2011|
for November 2011
for November 2011
for November 2011
|Adelaide (Kent Town)||26.7||+1.5||36.8||18th||14.7||+0.7||8.1||1st||25.2||31.5||average||81%|
A Monthly Climate Summary is prepared to list the main features of the weather in Adelaide Metro & Hills using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.
This statement has been prepared based on information available at 12 pm on Wednesday 30 November 2011. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Averages are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
(very low rainfall is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.