Northern Territory in 2011: A year of extremes

  • 3rd wettest year on record for the NT
  • Coolest year since 1976
  • Darwin Airport
    • 2nd wettest year on record
    • Tied coolest mean minimum temperature on record
    • 96 nights below 20 °C
    • Coolest dry season nights on record
  • Alice Springs
    • A few very hot days
    • Overall, cooler than average

    Overview

    The Northern Territory had a very eventful year from tropical cyclones to severe bushfires, record heat waves in January to record cool streaks in June. Several new monthly and seasonal records were set around the Territory this year including the coldest May day, the wettest day and the most nights below 20 °C. Darwin Airport, Gove, Jabiru and Tennant Creek all had their 2nd wettest year on record.

    Tropical Cyclone Carlos

    TC Carlos formed over the Beagle Gulf early on 16 February and moved very slowly southeast over Darwin and the surrounding rural area. This contributed further rainfall to the already wet conditions. TC Carlos was downgraded to a tropical low on the morning of 17 February, near Batchelor. Ex-TC Carlos then tracked southwards over the western Top End reaching the WA/NT border on 19 February. Very heavy rainfall associated with TC Carlos broke many rainfall records in the region. The heavy rain had a major impact on Darwin and surrounding areas, causing widespread flooding of low lying areas, inundating many houses and damaging roads and properties. Flooding of coastal areas was exacerbated by some of the largest astronomical tides of the year.

    Squally winds with gusts reaching 98 km/h lashed the Darwin area during the night of the 15th and again on the 16th, felling trees and power lines, cutting roads and damaging properties. Most government departments, schools and businesses were closed for two days during the event. Darwin Airport was also closed during the worst weather conditions on 16 February. Ex-TC Carlos caused widespread flooding elsewhere in the Darwin-Daly District, including a major flood in the Daly River, inundating the community of Nauiyu about 150 km south of Darwin.

    Dry conditions led to NT bushfires

    Following a record wet season, the whole Northern Territory experienced several dry months during the middle of the year. The Alice Springs District usually gets between 55 mm and 70 mm in the May through September period from frontal passages along the southern border. This season, however, persistent high pressure over central Australia prevented most of the cold fronts from moving into the Territory. Several locations, including Alice Springs Airport, did not receive any rainfall in August or September. By the end of the dry season Alice Springs Airport had recorded only 17.6 mm. This is only 27% of their average and marks the third driest May through September period on record. In these especially dry conditions the once-lush biota became ample fuel for bushfires across the NT.

    In addition to a high fuel load, dry and gusty southeast winds raised the fire danger index (FDI) across the Territory. The FDI reached "catastrophic" levels 9 times in the NT during this years dry season. Significant fires were reported in every month of the dry season; August and September were especially bad in the Top End and throughout the Red Centre. A total of 22 fire ban days were issued by fire authorities during August and September for various Fire Protection Zones across the Territory. Several thousands of square kilometers burned across the Territory but especially around the Alice Springs area. Local media at Alice Springs reported that an area greater than Tasmania was burned by bushfires.

    Tropical Cyclone Grant

    On 21 December, a surface low was identified to the north of the Cobourg Peninsula by satellite observations. The system lacked persistent deep convection and did not develop to tropical cyclone strength for several days. Overnight on 24 December further development occurred and TC Grant was named at 3:30 on Christmas morning, Sunday, 25 December.

    Gusts to 63 km/h were first observed at McCluer Island around 4am on the 25th and mean winds of 63 km/h were observed about six hours later. These winds steadily increased and around noon on the 25th storm force winds of 92 km/h gusting to 110 km/h were reported at McCluer Island. TC Grant then moved in a south southwest direction along the coast over the far eastern Van Diemen Gulf. It was weakening, but maintained as a Category 2 system until early on the 26th. Around dawn on the 26th it crossed the coast again at the southeastern corner of the Van Diemen Gulf as a Category 1 system. By mid-day on the 26th it was downgraded to below TC strength. The storm moved east, crossing the Gulf of Carpentaria, but did not reform into a tropical cyclone.

    TC Grant caused intense rainfall and flash flooding, washing away roads and railway lines in the Top End.

    Rainfall

    TC Carlos dumped record rainfall at Darwin Airport

    In the 24 hour period to 9 am on 16 February, as Tropical Storm Carlos moved slowly over the Darwin area, Darwin Airport recorded 367.6 mm of rain, which is a new record for the airport. The previous highest 24 hour rainfall for Darwin Airport was recorded on 3 January 1997, when Tropical Cyclone Rachel brought 290.4 mm of rain to Darwin. The 3-day total (15 to 17 February 2011) was 684.8 mm, breaking the previous 3-day record set between 8 and 10 December 1998, when Tropical Cyclone Thelma brought 462.0 mm of rain (see Special Climate Statement 29). The monthly rainfall total for February at Darwin Airport was 1110.2 mm, becoming the wettest of any month on record, passing the March 1977 total of 1013.6 mm.

    Overall, a very wet year

    The average rainfall across the NT in 2011 was 970.3 mm, which is 430.5 mm above average and the 3rd wettest year on record. The exceptionally wet year is likely the direct result of back-to-back La Niña events in the Pacific, and a few single very wet events, like TC Carlos and TC Grant, which added to the overall rainfall total. By the end of the year Darwin Airport had 2693.0 mm of rain, which is their 2nd wettest year on record after 1998 (2776.69 mm).

    The wettest locations overall in the NT were Lake Evella with 3866.6 mm followed by Territory Wildlife Park with 3061.2 mm, which marks the first times on record that any station has exceeded 3 metres of rainfall in a calendar year (both totals exceed the previous NT annual rainfall record which was 2953.2 at Channel Point in 2000). The third wettest location this year was at Majestic Orchids with 2924.3 mm. There were also many other sites had their highest total rainfall on record.

    The wettest single day was at Edith Falls Ridge with 385.0 mm on 27 December followed by Darwin Airport with 367.6 mm on 16 February. Many sites had their highest daily rainfall on record, including Darwin Airport, Palmerston, Territory Wildlife Park and Middle Point.

    The driest overall was Bond Springs Turnoff with 122.0 mm, followed by Upper Bond Springs with 289.0 mm, and then Watarrka with 308.7 mm.

    Temperature

    This years mean temperature across the Territory was 24.2 °C, which is 1.02 °C below average for the NT and ranks as the 7th coolest mean temperature on record.

    The warmest on average was Jabiru Airport with 27.9 °C, followed by North East Island and Warruwi both with 27.3 °C, followed by Darwin Airport with 27.0 °C. The coolest on average was Arltunga with 19.5 °C, followed by Alice Springs Airport with 20.4 °C, and then Kulgera with 20.6 °C.

    Maximum temperature

    Yulara heat wave

    On January 27th, Yulara broke its highest temperature record when it reached a daytime maximum temperature of 46.3 C, only to break this record again the following day with 46.4 C. This new record falls just 1.9 C shy of the all time Northern Territory maximum temperature record set on January 1st 1960 with 48.3 °C at Fink Post Office. January was also Yulara's hottest month on record with an average maximum temperature of 40.9 C, which surpasses the previous record of 40.8 C set in February 2007. Furthermore, Yulara measured 17 consecutive days above 40 C including 11 consecutive days above 42 C, which are both record longest hot spells of that magnitude. The dates of this hot spell were from January 14th to the 30th, inclusive.

    Low maximum temperatures on average

    When averaged across the Territory this years mean maximum temperature was 30.8 °C, which is 1.1 °C below average and and is the coolest year since 1976 in terms of maximum temperature. Every month saw below average temperatures except for July and August, which were above average and January, September, and October which were very near the average temperature.

    Even with below average maximum temperatures for most of the year, there were a few very hot days across the Territory. The hottest days were at Yulara Aero with 46.4 °C on 28 January, and 46.3 °C on 27 January. Walungurru had the next hottest day with 46.2 °C on 28 January.

    The warmest days on average were at Bradshaw with 33.9 °C, followed by Timber Creek with 33.7 °C, Noonamah with 33.6 °C, and then Jabiru Airport with 33.5 °C.

    The coolest days on average were at Arltunga with 27.6 °C, followed by Kulgera with 28.2 °C, and then Alice Springs Airport with 28.5 °C.

    The coldest day was at Kulgera where the maximum temperature only got to 10.2 °C on 13 July, followed by Alice Springs Airport which had 10.5 °C on 14 July, and then Arltunga with 10.8 °C on 9 Jun and Curtin Springs which also had 10.8 °C on 13 July.

    Some sites had their lowest mean daily maximum temperature on record including Larrimah, Alyangula Police, and Batchelor.

    Minimum temperature

    Plenty of cool nights in the Top End

    Darwin Airport recorded 96 nights below 20 °C, 94 of which occurred during the dry season months of May through September. This included every night in June which marks the first time since records began that June had 30 nights below 20 °C. In an average year the overnight temperature will drop below 20 °C about 50 times. The previous highest number nights below 20 °C was 93 nights set in 1976. The coolest night this year was on June 14th when the mercury fell to 12.7 °C. This was the coolest night since 27 June 2008. The record coolest night in Darwin still stands at 10.4 °C set on 29 July 1942.

    With a mean daily minimum temperature of 22.3 °C, 0.9 °C below its normal, Darwin Airport tied its lowest mean daily minimum temperature on record. Timber Creek also tied their record coolest year with 20.0 °C, 1.1 °C below average for them. Daly Waters set a new record for minimum temperatures with an annual average of 17.2 °C; this is 0.7 °C cooler than their previous record set in 2006.

    Arltunga breaks 113 year old record in May

    On 28 May the minimum temperature at Arltunga dropped to -3.8 C breaking the long-held Northern Territory record for the coldest May minimum temperature of -3.0 C set at Alice Springs Post Office on 27 May 1898. This new record was then broken again on the 31 May when the minimum temperature at Arltunga dropped to -4.2 C. While not an all-time record, Arltunga felt the coldest temperature this year with -6.1 C on 25 July 2011. The record lowest temperature in the NT still stands at -7.5 C set at Alice Springs Airport on 17 July 1976.

    Minimum temperatures were cool in NT

    When averaged across the Territory, minimum temperatures were among the coolest on record. The average minimum temperature for 2011 in the NT was 17.6 °C. This is 0.87 °C below average and the coolest since 1976. The three coldest nights were all at Arltunga with -6.1 °C on 25 July, -6.0 °C on 24 July, and then -5.0 °C on 1 Jun. It is no surprise then that the coolest nights on average were at Arltunga with an annual average minimum temperature of 11.5 °C. Alice Springs Airport was the second coolest with 12.4 °C followed by Kulgera with 13.1 °C.

    The warmest nights on average were at North East Island where the average annual minimum temperature was 24.5 °C, followed by Warruwi with 23.7 °C, and then Centre Island with 23.1 °C.

    The warmest single night this year was at Papunya on 28 January when the minimum temperature was 31.6 °C. The next warmest night was at Walungurru with 30.9 °C on 28 January.

    Wind

    The strongest wind gusts around the Territory this year was at McCluer Island with 126 km/h on 25 December from TC Grant, followed by Rabbit Flat with 107 km/h on 11 December. Darwin Airport measured 98 km/h on 15 February as pre-TC Carlos moved over. Tennant Creek Airport also measured a maximum wind gust of 98 km/h on 15 October, and Daly Waters had a gust of 98 km/h on 24 October. The next strongest gust was Walungurru with 96 km/h on 28 January.

    Further information

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    Extremes in 2011
    Hottest day 46.4 °C at Yulara Aero on 28 Jan
    Warmest days on average 33.9 °C at Bradshaw
    Coolest days on average 27.6 °C at Arltunga
    Coldest day 10.2 °C at Kulgera on 13 Jul
    Coldest night -6.1 °C at Arltunga on 25 Jul
    Coolest nights on average 11.5 °C at Arltunga
    Warmest nights on average 24.5 °C at North East Island
    Warmest night 31.6 °C at Papunya on 28 Jan
    Warmest on average overall 27.9 °C at Jabiru Airport
    Coolest on average overall 19.5 °C at Arltunga
    Wettest overall3866.6 mm at Lake Evella
    Driest overall 122.0 mm at Bond Springs Turnoff
    Wettest day385.0 mm at Edith Falls Ridge on 27 Dec
    Highest wind gust 126 km/h at McCluer Island on 25 Dec

    Record highest annual daily rainfall
    Highest daily rainfall
    in 2011 (mm)
    Previous annual
    wettest
    Years of
    record
    Darwin Airport 367.6 on 16 Feb 290.4 on 3 Jan 1997 71
    The Garden 134.6 on 8 Mar 134.4 on 29 Jan 1974 58
    Berrimah Research Farm 245.2 on 16 Feb 222.0 on 16 Mar 1977 49
    Channel Island 313.2 on 16 Feb 290.2 on 13 Dec 2009 41
    Kalala 155.0 on 20 Nov 138.0 on 22 Apr 2000 34
    Atula 119.6 on 22 Feb 119.2 on 28 Feb 2010 33
    Nightcliff Sports Club 280.0 on 16 Feb 259.8 on 16 Mar 1977 33
    Mango Farm 230.2 on 18 Feb 218.4 on 14 Apr 1985 32
    Palmerston 300.0 on 16 Feb 295.7 on 3 Jan 1997 29
    Stokes Hill 288.4 on 16 Feb 273.6 on 13 Dec 2009 27
    Wagait Beach 367.0 on 16 Feb 279.2 on 3 Mar 2007 24
    Leanyer* 344.2 on 16 Feb 271.4 on 3 Jan 1997 23
    Territory Wildlife Park 327.0 on 17 Feb 260.0 on 10 Dec 1998 21
    Top Springs Roadhouse 111.0 on 25 Jan 110.0 on 28 Jan 2006 21
    Lake Evella 196.0 on 22 Mar 135.0 on 22 Dec 2003 19
    Kalkarindji 258.2 on 23 Mar 156.4 on 24 Dec 2003 17
    Point Fawcett 265.2 on 16 Feb 223.8 on 20 Dec 2008 17
    Beeboom Crossing 203.5 on 18 Feb 183.5 on 5 Jan 2008 16
    Delamere Weapons Range 156.4 on 8 Feb 143.0 on 26 Feb 2003 15
    East Arm 330.0 on 16 Feb 131.5 on 20 Feb 2008 15
    Wongalara 185.0 on 28 Mar 171.4 on 7 Apr 2001 13
    Rankin Point 260.0 on 15 Feb 235.0 on 13 Dec 2009 12
    Seventeen Mile Creek 184.5 on 27 Dec 144.0 on 3 Mar 2004 12
    Wigley Gorge 65.0 on 9 Jan 61.0 on 28 Feb 2010 12
    Middle Point 142.0 on 15 Feb 112.4 on 31 Dec 2006 11

    * On 16 Feb the this raingauge overflowed. The recorded amount represents an underestimate of the actual rainfall on that day.



    Record highest total annual rainfall
    Total rainfall
    for 2011 (mm)
    Previous annual
    wettest
    Years of
    record
    Annual
    average
    Oenpelli 2270.5 2203.9 in 1981 90 1406.5
    Bradshaw Homestead 2000.6 1469.5 in 2010 61 919.1
    Daly Waters 1182.2 1112.4 in 2004 41 664.7
    Centre Island 1955.6 1794.4 in 2010 40 1042.7
    Cdu Katherine Rural Campus 1698.4 1652.8 in 2003 38 1096.1
    Darwin River Dam 2642.6 2298.6 in 1998 36 1642.5
    McArthur River Mine 1535.1 1430.2 in 2003 34 755.6
    Timber Creek 1450.5 1410.3 in 2000 30 958.7
    Mango Farm 2306.1 1991.1 in 2008 29 1434.5
    Jindare 2028.5 1825.5 in 2010 28 1214.9
    Nightcliff Sports Club 2590.3 2516.0 in 1977 23 1859.0
    Stokes Hill 2421.2 2043.2 in 1977 21 1596.2
    Leanyer* 2591.0 2509.0 in 1998 19 1870.3
    Northlakes* 2662.0 2425.5 in 1995 15 1879.7
    Acacia, Mocatto Road 2533.7 2290.9 in 1998 13 1851.7
    Batchelor Aero 2204.4 2129.8 in 2001 13 1639.4
    Bing Bong Port 2033.9 1780.4 in 2006 12 1167.2
    Territory Wildlife Park 3061.2 2264.3 in 1997 12 1809.0
    Geriatric Park 2880.4 2759.4 in 1998 10 2368.8
    Middle Point 1934.8 1827.4 in 2006 10 1462.5

    * On 16 Feb the this raingauge overflowed. The recorded amount represents an underestimate of the actual rainfall.




    Record lowest annual daily maximum temperature
    Lowest daily maximum
    temperature
    in 2011 (°C)
    Previous annual
    coolest
    Years of
    record
    Annual
    average
    Point Fawcett 23.4 on 13 Jun 24.0 on 12 Jun 2000 13 31.5
    Groote Eylandt Airport 21.4 on 11 Jun 21.5 on 17 Aug 2007 11 32.1



    Record lowest annual mean daily maximum temperature
    Mean daily maximum
    temperature
    for 2011 (°C)
    Previous annual
    coolest
    Years of
    record
    Annual
    average
    Larrimah 32.4 32.6 in 2000 42 33.9
    Tennant Creek Airport 30.2 = 30.2 in 1974 40 31.9
    Wave Hill 32.3 = 32.3 in 1974 35 34.2
    Timber Creek 33.7 34.0 in 2000 29 34.9
    Alyangula Police 30.5 30.6 in 2000 27 31.5
    Tindal RAAF 32.7 = 32.7 in 2000 21 33.8
    Douglas River 33.1 33.4 in 2006 16 34.3
    Borroloola 32.5 = 32.5 in 2000 15 33.8
    Ngukurr 32.9 33.6 in 1965 13 34.3
    Delamere Weapons Range 32.2 32.9 in 2000 12 33.8
    Lajamanu 32.2 32.3 in 2000 12 33.6
    Batchelor Aero 32.5 33.1 in 2000 10 33.8
    Groote Eylandt Airport 31.5 = 31.5 in 2000 10 32.1



    Record lowest annual temperature
    Lowest temperature
    in 2011 (°C)
    Previous annual
    coolest
    Years of
    record
    Annual
    average
    Point Fawcett 8.2 on 15 Jun 9.2 on 30 Jun 2007 13 22.8
    Dum In Mirrie 10.0 on 15 Jun 10.7 on 26 Jul 2008 12 23.2
    Ngayawili 10.5 on 15 Jun 11.6 on 26 Jul 2008 11 22.7



    Record lowest annual mean daily minimum temperature
    Mean daily minimum
    temperature
    for 2011 (°C)
    Previous annual
    coolest
    Years of
    record
    Annual
    average
    Darwin Airport 22.3 = 22.3 in 1976 67 23.2
    Larrimah 18.0 18.3 in 1967 41 19.7
    Daly Waters 17.2 17.9 in 2006 37 19.3
    Timber Creek 20.0 = 20.0 in 2008 28 21.1
    Borroloola 18.4 19.1 in 2006 15 19.7
    Delamere Weapons Range 19.7 19.9 in 1999 12 20.8
    Lajamanu 16.5 17.1 in 2006 12 17.9
    Territory Grape Farm 13.6 13.7 in 1997 12 14.6



    Maps
    Observed Anomaly Decile rank
    Total
    rainfall
    Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
    Mean
    daily
    maximum
    temperatures
    Map of Mean maximum temperature for all of Australia Map of Anomaly in mean maximum temperature for all of Australia Map of Decile rank of mean maximum temperature
    Mean
    daily
    minimum
    temperatures
    Map of Mean minimum temperature for all of Australia Map of Anomaly in mean minimum temperature for all of Australia Map of Decile rank of mean minimum temperature

    Click on a map to show it full size in a pop-up window


    Month by month
    January experienced a record heat wave that hit Yulara and others in the Alice Springs District while a monsoon trough drizzled steadily across the Top End. On the 27th, Yulara broke its highest temperature record when it reached a daytime maximum temperature of 46.3 ° C, only to break this record again the following day with 46.4 ° C. Between the 14th and the 30th of the month, there were 17 consecutive days above 40 ° C including 11 consecutive days above 42 ° C. Darwin measured 26 rain days during the month, with 23 of these falling consecutively between the 4th and the 26th.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    Rainfall rank Maximum temperature rank Minimum temperature rank
    February was marked by Tropical Cyclone Carlos which formed over Darwin on the 16th. It was a notably slow moving storm which broke several rainfall records around the Darwin area. Darwin Airport recorded 367.6 mm of rain in the 24 hour period to 9 am on 16 February which is the wettest day on record. Darwin Airport also measured the coolest February day on record when the maximum temperature only reached 24.8 on the 15th.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    March saw several rainfall records broken. Nine sites had their wettest March on record including Brunette Downs, McArthur River Mine and Rabbit Flat. Darwin Airport was among several sites that surpassed their previous wet season rainfall record in March. Also, thick cloud cover kept daily maximum temperatures low.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    April began with heavy rains and gusty storms across the Top End with several stations exceeding their previous record April rainfall within the first week of the month. The following weeks showed signs of the approaching dry season with cooler nights and fewer storms.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    May saw sub-zero temperatures come early to Alice Springs with 5 consecutive days below zero setting a record for the most consecutive May days below freezing. Arltunga set a new NT minimum temperature record for May with -4.2 °C on the 31st. Darwin also saw record cool nights.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    June was the coldest on record for minimum temperatures across the NT. Darwin dropped below the 20 °C every night of the month for the first time since records began in 1941. Alice Springs also experienced below average night-time temperatures throughout June, enduring 10 nights in a row below 1 °C.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    July was the first month since October 2010 that Darwin Airport measured above average mean maximum temperatures. Rainfall was near average for a dry season month with the far south-western Alice Springs and the eastern Arnhem districts being the only places that measured any rain for the month.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    August night-time temperatures were below average across most of the Northern Territory, daytime temperatures were slightly warmer than the month before. On 29 August, Darwin Airport had a maximum temperature of 34.8 °C was the warmest day to that point this year. Fog was observed at Darwin Airport on five days in August. And Below average rainfall fell across the NT except for along the Gulf of Carpentaria.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    September experienced extreme fire weather across Territory, several fire bans were imposed by fire authorities throughout the month. Several thousands of square kilometers burned around the Alice Springs area. Minimum temperatures were below average for most of the month, the Darwin Area enjoyed 5 nights below 20 °C.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    October had a dry start but weather systems in the second half of the month led to above average rainfall across most of the NT. Overall, temperatures across the Territory were above average.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    November 2011 ranks 4th wettest on record. The average rainfall across the NT during November was 87.5 mm, well above the monthly average of 39.5 mm. Except for a few locations along the north coast, including Darwin, most of the Territory experienced below average temperatures for the month.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    In December Tropical Cyclone Grant brought heavy rains to the eastern Top End. Gove and Jabiru both recorded their wettest December on record while Darwin Airport and Alice Springs had below average rainfall.
    Map of decile rank of rainfall Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
    Rainfall rank Maximum temperature rank Minimum temperature rank

    Click on the month to read the full monthly summary


    Summary statistics for 2011
    Maximum temperatures
    (°C)
    Minimum temperatures
    (°C)
    Rainfall
    (millimetres)
    Mean
    for
    2011
    Diff
    from
    average
    Highest
    for
    2011
    Mean
    for
    2011
    Diff
    from
    average
    Lowest
    for
    2011
    Total
    for
    2011
    Average
    annual
    total
    Rank
    of
    2011
    Fraction
    of annual
    average
    Darwin-Daly (district 14GA)
    Batchelor Aero 32.5 -1.2 38.6 18 Oct 20.6 -0.5 8.0 16 Jun 2204.4 1639.4 v high 134%
    Darwin Airport 31.6 -0.4 35.8 27 Nov 22.3 -0.9 12.7 14 Jun 2686.0 1729.4 v high 155%
    Delamere Weapons Range 32.2 -1.5 40.4 11 Oct 19.7 -1.1 6.6 18 Jun 1174.0 904.7 high 130%
    Douglas River 33.1 -1.1 40.6 12 Oct 19.4 -0.4 4.1 16 Jun
    Jabiru Airport 33.5 -0.8 39.2 31 Oct 22.3 -0.3 10.7 14 Jun 2463.6 1576.2 v high 156%
    Middle Point AWS 33.2 -0.9 39.8 14 Oct 19.8 -0.8 6.3 17 Jun 1934.8 1462.5 v high 132%
    Noonamah AWS 33.6   39.3 20 Oct 20.2   8.4 20 Jun 2667.4
    Port Keats Aero 32.3 -0.7 38.9 25 Dec 21.2 -0.7 8.6 14 Jun 1604.6 1186.7 high 135%
    Tindal RAAF 32.7 -1.0 40.7 12 Oct 19.6 -0.9 6.0 15 Jun 1162.4 1123.4 average 103%
    Arnhem (district 14BC)
    Alyangula Police 30.5 -0.9 37.2 12 Oct     11.5 13 Jun 1628.4 1227.6 high 133%
    Gove Airport 30.7 +0.1 37.6 11 Dec 22.0 -0.4 13.1 11 Aug 2167.0 1469.9 v high 147%
    Groote Eylandt Airport AWS 31.5 -0.6 39.1 11 Oct 20.3 -0.4 7.1 14 Jun 1636.8 1415.2 average 116%
    Ngayawili 31.1 -0.3 36.7 27 Nov 22.6 -0.2 10.5 15 Jun 1820.6 1581.1 high 115%
    North East Island 30.1   35.7 16 Dec 24.5   19.7 13 Jun 1779.2 860.8 v high 207%
    Warruwi 30.9 -0.3 36.3 15 Oct 23.7 -0.6 15.5 15 Jun
    Roper-Mcarthur (district 14DE)
    Borroloola 32.5 -1.2 40.7 11 Oct 18.4 -1.3 4.6 13 Jun 1594.6 935.7 high 170%
    Centre Island 30.3 -0.9 38.2 14 Oct 23.1 -0.7 13.2 11 Jun 1955.6 1042.7 highest 188%
    Daly Waters AWS 32.4 -1.4 41.7 12 Oct 17.2 -2.0 2.0 14 Jun 1182.2 664.7 highest 178%
    Larrimah 32.4 -1.5 41.2 11 Oct 18.0 -1.7 3.4 13 Jun 1292.7 851.9 v high 152%
    McArthur River Mine 33.3 -1.2 41.6 11 Oct 19.1 -0.5 4.8 19 Jun 1535.1 755.6 highest 203%
    Ngukurr 32.9 -1.3 42.3 11 Oct     9.5 15 Jun 1437.8 774.1 v high 186%
    Wollogorang 32.3 -1.4 40.3 11 Oct 17.9 -1.0 4.1 18 Jun 1066.5 965.3 average 110%
    Victoria (district 14F)
    Lajamanu 32.2 -1.3 42.6 30 Jan 16.5 -1.4 1.7 14 Jun 853.6 506.4 high 169%
    Timber Creek 33.7 -1.2 43.6 12 Oct 20.0 -1.2 6.0 19 Jun 1450.5 958.7 highest 151%
    Victoria River Downs 33.1 -1.3 42.9 12 Oct 18.2 -1.4 3.9 15 Jun 979.4 647.9 v high 151%
    Wave Hill 32.3 -1.9 42.3 11 Oct 17.7 -1.2 2.8 2 Jun 872.7 698.8 high 125%
    Barkly (district 15A)
    Tennant Creek Airport 30.2 -1.7 41.1 27 Jan 18.4 -1.4 5.7 11 Jun 924.0 474.3 v high 195%
    Alice Springs (district 15B)
    Alice Springs Airport 28.5 -0.2 43.0 27 Jan 12.4 -0.8 -3.4 15 Jun 366.4 284.7 high 129%
    Arltunga 27.6 -1.0 40.6 10 Dec 11.5 -2.0 -6.1 25 Jul 566.8 298.3 v high 190%
    Curtin Springs 29.4 -0.2 45.5 28 Jan     -1.0 24 Jul 370.3 238.8 high 155%
    Kulgera 28.2 -0.1 44.9 28 Jan 13.1 -0.8 -2.1 30 May 345.7 257.2 high 134%
    Rabbit Flat 32.1 -1.6 44.1 30 Jan 15.5 -1.2 0.7 16 Jun 753.1 498.4 high 151%
    Territory Grape Farm 30.1 -0.6 43.5 27 Jan 13.6 -0.9 -2.1 1 Jun 382.2 326.0 high 117%
    Walungurru 31.8   46.2 28 Jan 18.3   4.7 13 Jun 368.6
    Yulara Aero 29.1 -0.8 46.4 28 Jan 13.6 -0.4 -0.7 16 Jun 574.8 292.1 high 197%

    Notes

    al Climate Summary is prepared to list the main features of the weather in Northern Territory 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 8 am on Wednesday 4 January 2012. 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 the years 1800 to 2009. They are not shown for sites with less than 10 years of record in that time, 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.

    Further information

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