Monday, 2 December 2013 - Monthly Climate Summary for Adelaide Metro & Hills - Product code IDCKGC23L0
Adelaide Metro & Hills in November 2013: Dry with cool nights
- Driest November in 17 years
- Driest month for any month since February 2009
- Cool nights and near-average daytime temperatures
November 2013 has been very dry across the Adelaide region, with a total rainfall at Adelaide (Kent Town) of only 5.2 mm received over three days, well below the long-term average of 30.9 mm typically received on eight rain days; the long-term median rainfall for November at Adelaide (Kent Town) is 29.6 mm. The lack of rainfall, associated with the dominance of high pressure systems across southern Australia throughout the month, resulted in November being the driest of any month since February 2009 and the driest November in 17 years (driest November since 1996). Most of the rainfall was recorded on the 8th and later, on the 29th, as low pressure troughs crossed South Australia.
Monthly rainfall totals were generally about 5 mm for locations across the Adelaide Plains, with higher totals of 15 to 25 mm throughout the Hills. The wettest location for the month was at Mount Barker, where 25.6 mm was observed. Mount Barker also reported the wettest day of the month with 9.8 mm in the 24 hours to 9 am on the 8th.
(Note that the Adelaide official climate rainfall record is taken from the manually observed 203 mm rain gauge at the Kent Town site in Adelaide. These figures may differ from totals on some Bureau of Meteorology web pages as these may be from automatic tipping bucket rain gauge readings).
Parafield Airport observed the warmest day for any location across the region with a maximum of 34.3 °C on the 20th. The warmest days on average were also at Parafield Airport, with a monthly average of 23.3 °C.
Daytime temperatures were cooler than normal, but generally near average across the Adelaide region throughout the month. Maximum temperatures ranged from 18.8 °C at Mount Lofty to 26.4 °C at Parafield Airport.
November started with warmer-than-normal days, but the second and third week of the month saw cooler days. The coldest day of the month for any location in the Adelaide and Hills region was reported at Mount Lofty on the 8th, when the maximum reached just 10.6 °C.
Mean minimum temperatures were generally below average across the Adelaide Plains and Hills this November, with the minimum temperature at Adelaide (Kent Town) being 13.1 °C, 1.0 °C below the long-term November average. Mount Lofty reported the coolest nights on average, with 8.1 °C for the month.
The coldest night during November 2013 in the Adelaide and Hills area was observed at Parafield Airport on the 14th, when the minimum temperature went down to 3.6 °C. The warmest night was 25.9 °C at Kent Town on the 27th, Adelaide's warmest November night in nine years.
|Extremes in November 2013|
|Hottest day||38.5 °C at Edinburgh RAAF on the 27th|
|Warmest days on average||26.4 °C at Parafield Airport|
|Coolest days on average||18.8 °C at Mount Lofty|
|Coldest day||10.6 °C at Mount Lofty on the 8th|
|Coldest night||3.6 °C at Parafield Airport on the 14th|
|Coolest nights on average||8.1 °C at Mount Lofty|
|Warmest nights on average||13.1 °C at Adelaide (Kent Town)|
|Warmest night||25.9 °C at Adelaide (Kent Town) on the 27th|
|Warmest on average overall||19.1 °C at Adelaide (Kent Town)|
|Coolest on average overall||13.5 °C at Mount Lofty|
|Wettest overall||25.6 mm at Mount Barker|
|Driest overall||4.8 mm at Adelaide Airport|
|Wettest day||9.8 mm at Mount Barker on the 8th|
|Highest wind gust||70 km/h at Edinburgh RAAF on the 10th|
|Summary statistics for November 2013|
|Adelaide (Kent Town)||25.1||-0.1||37.0||27th||13.1||-1.0||8.4||14th||5.2||30.9||v low||17%|
|Adelaide Airport||24.2||+0.3||34.9||27th||12.1||-0.7||6.5||14th||4.8||24.8||v low||19%|
|Parafield Airport||26.4||+1.1||38.0||27th||11.6||-1.2||3.6||14th||5.2||26.3||v low||20%|
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 9 am on Monday 2 December 2013. 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 decile
ranking (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.
The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.