Monday, 2 December, 2013 — Monthly Summary for Australia — Product Code IDCKGC1A00
Averaged over the month of November, Australian maximum and minimum temperatures were both above average. The maximum temperature anomaly, +0.69 °C, and minimum temperature anomaly, +0.36 °C, combined to give a mean temperature anomaly of +0.52 °C. Maxima were above average across most of the southern half of Western Australia, in central Australia, and from western Queensland through to southeast Queensland and parts of northern New South Wales. Small areas of the tropical north, southern coastline and eastern Tasmania recorded below-average November maxima. Minima were also above average for most of the southern half of Western Australia, but warmer-than-average nights also extended into western South Australia, large parts of the Northern Territory and western and northern Queensland. Cooler-than-average nights were recorded over much of the inland southeast.
Rainfall was above the long-term average when averaged nationally (22% above average). However, above-average monthly rainfall was generally restricted to northern Australia, a narrow band along the eastern coast of the mainland and eastern Tasmania. Lighter falls through the eastern half of Western Australia also saw above-average falls recorded for November. Below-average monthly totals were recorded in scattered areas along the coast of Western Australia from Karratha to Esperance and across a broad area of the inland southeast and central Australia.
November was another warmer-than-average month for Australia, the sixteenth in a string of consecutive warmer-than-average months since August 2012. The national area-averaged maximum temperature anomaly was +0.69 °C, the minimum temperature anomaly was +0.36 °C and the mean temperature anomaly was +0.52 °C.
Tasmania recorded below-average maximum temperatures for the month (−0.89 °C), Victoria near-average maxima and the remaining states and the Northern Territory above-average maxima (with anomalies ranging from +0.34 °C in the Northern Territory to +1.09 °C in New South Wales). Maximum temperatures were above to very much above average across Western Australia from the southern Pilbara to the southwest with positive anomalies extending into the Interior District. Above average maxima were also recorded across northern South Australia and the southern half of the Northern Territory, western and southern Queensland, parts of northern New South Wales around and east of Bourke as well as other isolated areas about the northern coast. Below-average monthly maxima were restricted to small areas, in the Gulf Country in Queensland, in the north of Western Australia and east of Esperance, in western Victoria and adjacent South Australia, and in eastern Tasmania.
Area-averaged minima were above average for northern Queensland, the Northern Territory and Western Australia; for Western Australia it was the eighth-warmest November on record (anomaly of +0.91 °C). Highest-on-record minima occurred during November in an area extending from the Perth region northeast into the central and northern Wheatbelt, with above- to very-much-above-average overnight temperatures recorded in the Pilbara and most of the southern half of Western Australia, extending into the west of South Australia. Minima were also above average for the Cape York Peninsula and Gulf Country in Queensland, the Victoria River District of the Northern Territory and much of the more southerly part of the Territory. Parts of coastal Victoria and northern and eastern Tasmania also recorded warm nights. Cooler-than-average nights were recorded across a large area spanning eastern South Australia, northeastern and northern Victoria and the southeastern half of New South Wales.
|Areal average temperatures|
|Maximum Temperature||Minimum Temperature||Mean Temperature|
|Queensland||= 76||+0.74||79||+0.43||= 78||+0.58|
|New South Wales||= 71||+1.09||37||−0.49||61||+0.30|
|Western Australia||= 85||+0.89||97||+0.91||8th highest||92||+0.90|
|Northern Territory||= 71||+0.34||78||+0.47||= 74||+0.41|
Rank ranges from 1 (lowest) to 104 (highest). A rank marked with ’=‘ indicates the value is tied for that rank. Anomaly is the departure from the long-term (1961–1990) average.
Nationally-averaged rainfall during November was 22% above the long-term average. New South Wales, Victoria and South Australia recorded below-average rainfall, while the other states and the Northern Territory recorded area-averaged rainfall above the long-term mean.
During November, little or no rainfall was recorded across much of eastern central Australia, including southwestern Queensland and western New South Wales. Below-average monthly totals were observed across an area reaching from Alice Springs through most of the Murray-Darling Basin south of the Queensland border.
Above-average November rainfall was recorded in northern and eastern Tasmania, where individual days of heavy rain resulted in some flash flooding on the 13th; close to the eastern coast from East Gippsland to southeast Queensland; through the west of Western Australia from the Eucla to the Kimberley; and across much of the tropical north. Rainfall around Darwin and the eastern Top End was in part a result of a single large storm overnight on the 5th, which broke daily rainfall records at some locations, while across the north more broadly, a significant portion of the monthly rainfall total was associated with widespread wet conditions in the last 10 days of the month, including tropical cyclone Alessia which tracked from the Kimberley coast to the Gulf of Carpentaria over the last week of the month.
|New South Wales||= 54||40.1||−11%|
Rank ranges from 1 (lowest) to 114 (highest). A rank marked with ’=‘ indicates the value is tied for that rank. Departure from mean is relative to the long-term (1961–1990) average.
|Australian weather extremes during November 2013|
|Hottest day||46.4 °C at Roebourne (WA) on 5 November|
|Coldest day||0.1 °C at Mount Wellington (Tas.) on 3 November|
|Coldest night||−6.3 °C at Thredbo AWS (NSW) on 4 November|
|Warmest night||31.8 °C at Argyle Aerodrome (WA) on 17 November|
|Wettest day||258.0 mm at Gray (Haven of Hope) (Tas.) on 13 November|
The Monthly Climate Summary is prepared to list the main features of the weather in Australia using the most timely and accurate information available on the date of publication; it will generally not be updated.
This statement has been prepared based on information available at 12 noon EST on Saturday 1 December 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available, especially for rainfall where much more data becomes available as returns are received from volunteers.
Long-term averages in this statement and associated tables are for the period 1961 to 1990 unless otherwise specified.
In the tables, fractional ranks denote tied values.
A new area-averaging method was adopted for rainfall in May 2009. Current and historical totals for Tasmania are substantially higher than under the old scheme, but differences for other states, and nationally, are negligible. The rankings and departures from mean shown here use the new method.
The new ACORN-SAT temperature dataset has been used for calculation of state and national temperature area averages in summaries 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.