Wednesday, 2 January 2013 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in December 2012: A wet and hot month in southwest WA

• Rainfall: above-average for WA; sixth-wettest on record for southwest WA
• Maximum temperature: above-average for WA; sixth-highest on record for southwest WA
• Minimum temperature: third-highest on record for WA; fourth-highest on record for southwest WA

Extremes Maps Records Summaries Important notes the top

Rainfall

Rainfall during December 2012 was above- to very-much-above-average through much of western WA, with areas of highest on record in the Southwest and Lower West districts due to extreme rainfall on the 11th and 12th that broke December and all-time records for some sites, as well as the record for the highest daily total in the Southwest Land Division (SWLD) for December. Several sites in the northeast Gascoyne and inland Pilbara also recorded their wettest December as a result of frequent thunderstorm activity during the month. In the remainder of the state, above- to very-much-above-average rainfall was observed in the Eucla and southern Southern Interior, and in the northern Northern Interior and inland Kimberley, while patches of below- to very-much-below-average rainfall were observed in the Southeast Coastal, Goldfields, eastern Interior, and north and west Kimberley.

Averaged across the state as a whole, rainfall during December 2012 was above-average, while for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) rainfall ranked as the sixth wettest December since comparable records commenced in 1900. For the wider SWLD, December 2012 rainfall was above-average.

A trough across northern WA and extending just off the west coast resulted in showers and thunderstorms on the 3rd and 4th over much of northern WA, extending into central parts and the northern SWLD. Severe thunderstorms were observed and Morawa Airport in the Central West registered a wind gust to 94 km/h on the 3rd, while Tenindewa in the Central West recorded 25.2 mm in the 24 hours to 9am on the 4th, which is the site's wettest December day in 11 years of record. Thunderstorms in the Pilbara produced heavy rainfall with 83.4 mm of rain recorded in the 24 hours to 9am on the 4th at Nullagine which produced minor flooding of the Nullagine River.

A deep surface trough across northern and western WA combined with a middle level disturbance to the west, brought showers and thunderstorms to much of northern and western WA on the 5th and 6th. In the 24 hours to 9am on the 6th, Wialki and Bonnie Rock, both in the Central Wheat Belt, observed their wettest December days in 80 and 75 years of record respectively with totals just below 40 mm. The wettest location in the state during the event was the Porongurups in the South Coastal district, which reported 49.0 mm, its wettest December day in 6 years of record.

A trough extending across northern WA and down the west coast resulted in showers and thunderstorms through much of northern and western WA on the 9th and 10th. Heavy rainfall was observed in parts of the Kimberley in the 24 hours to 9am on the 10th, while moderate to heavy totals were observed in the Central West and Central Wheat Belt. Bowgada in the Central West recorded 47.6 mm, which was its second wettest December day in 103 years of record, only behind 52.0 mm recorded on 9 December 1975, while Kondut in the Central Wheat Belt observed its wettest December day in 80 years of record with 43.0 mm. Severe thunderstorms produced strong winds at Dalwallinu in the Central Wheat Belt, with the site observing a maximum wind gust of 104 km/h, while Troughton Island in the Kimberley recorded a maximum wind gust of 91 km/h.

A deep surface trough interacted with a slow moving middle level low off the WA west coast to produce widespread showers and thunderstorms across most of WA from the 10th to 13th. The middle level low was both slow moving, allowing moisture to build up over southwest WA over a period of several days, and in phase with the surface trough, enhancing atmospheric instability. These factors combined to produce unusually heavy rainfall in southwest WA over several days. Very high rainfall totals were reported in the Lower West and Southwest districts on the 11th and 12th, but particularly in northern parts of the Southwest district, around the localities of Bunbury, Harvey, and Collie, with many sites registering December daily records and with some even surpassing their highest monthly total for December. Three daily rainfall reports during the event exceeded the previous highest daily rainfall recorded in the Southwest Land Division (SWLD) for December; a record that was broken in 2011 (i.e., just one year ago) after standing for more than 70 years. The heaviest rainfall was reported during the 24 hours to 9am on the 13th with the highest fall being 210.8 mm at Yourdamung Lake, northeast of Collie in the Southwest district. This is the fifth highest daily rainfall total on record in the SWLD for any month. Please refer to Special Climate Statement 42 for further information. The surface trough and middle level feature responsible for the heavy rainfall moved eastward into central parts of the state on the 13th and 14th, with showers and thunderstorms observed throughout much of southern WA and moderate daily totals reported in the Central Wheat Belt and Eucla, while showers and thunderstorms were observed over much of central and northern WA, with moderate to heavy falls observed in the Kimberley, Pilbara, and north Gascoyne.

Seasonal showers and thunderstorms were a regular feature over northern WA during December 2012, with numerous sites observing daily falls of over 50 mm and several sites in the northeast Gascoyne and inland Pilbara, including Millstream with 111 years of record, observed their wettest December on record. Outside of the extreme rainfall in the Southwest District on the 11th and 12th, the heaviest falls in WA during December 2012 were in the Kimberley where Liveringa Station observed 106.0 mm in the 24 hours to 9am on the 12th, and Mount Hart Station observed 87.0 mm in the 24 hours to 9am on the 16th.

Maximum temperature

Maximum temperatures during December 2012 were well above average throughout much of western and southern WA, and in the north and west Kimberley with daytime temperatures up to 2 °C above normal in most of southern WA, grading to up to 3 °C along parts of the west and south coast, and up to 4 °C above normal the west Eucla and in the west Kimberley near Broome. In contrast, below average maxima were observed through parts of inland northern WA, with daytime temperatures up to 3 °C below normal through inland Pilbara, northwest Gascoyne and southeast Kimberley. Broome in the west Kimberley observed its hottest December in 73 years of record, with a mean maximum temperature of 36.3 °C.

When averaged across the state as a whole, the mean maximum temperature for December 2012 was above-average, continuing the run since April of consecutive mean maxima above the average. After a reasonably cool first half of December 2012, very hot conditions in the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) towards the end of the month resulted in the region observing its sixth hottest December since comparable records commenced in 1950.

A trough across northern WA resulted in hot conditions across northern WA to begin December 2012, with temperatures reaching the low to mid-forties in the Pilbara on the 1st and 2nd. Marble Bar was the hottest location with 45.3 °C. The hot conditions shifted to western WA on the 3rd, with sites in the Central West, Gascoyne and adjacent Pilbara observing maxima in the high thirties to low forties. Geraldton Airport was the hottest location, reaching a maximum of 43.1 °C at 1321 WST, before thunderstorms moved through the area at approximately 1500 WST and temperatures rapidly dropped to the low twenties by 1530 WST. A relatively hot day was observed in western and southern parts of the SWLD on the 4th, with a trough located near the west coast. Conditions were particularly hot in western parts of the Lower West where temperatures were in the mid-to-high thirties, 8 °C to 10 °C above the December average. In contrast, showers and thunderstorms in the Gascoyne resulted in Murchison recording a maximum temperature of 27.9 °C, well below the December mean of 37.3 °C. Perth Metro reached a maximum of 38.2 °C on the 4th, the hottest location in southern WA. A trough across northern WA resulted in very hot day-time maxima on the 9th, with temperatures reaching the mid-forties in the Kimberley. Bidyadanga observed the highest temperature in the state with 45.3 °C, the site's fourth hottest December day on record. West Roebuck's maximum of 45.0 °C was that site's hottest day in December since records commenced in 1999, breaking the previous record of 44.9 °C set on 1 December 2009.

The lowest maximum temperature of the month in WA was recorded at Mt Barker on the 12th as a low pressure system over the SWLD brought showers, thunderstorms and cloud to the region. Southeasterly winds along with cloud and precipitation kept the maximum at the site to just 16.6 °C.

Northerly winds brought hot conditions to the southern Goldfields, Southeast Coastal, and Eucla on the 17th, with temperatures reaching 40 °C at some locations. A broad trough across inland northern WA resulted in hot conditions in parts of the Pilbara, Gascoyne and Interior on the 19th through to the 23rd, extending into the southeastern SWLD on the 21st and Eucla on the 22nd, with temperatures reaching the mid-forties in the inland Pilbara and northwest Gascoyne. Emu Creek recorded a maximum of 47.3 °C on the 23rd, the highest temperature in WA in December 2012, while Learmonth Airport recording 46.6 °C on the same day which was the second hottest day of the month in WA. A prolonged spell of hot weather was observed in southwestern WA from Christmas Day through to the end of the month, with the hot weather extending across southern WA on the 31st. The hot conditions were due to a stangnant weather system consisting of a high in the Bight and a trough near the west coast directing generally hot easterly winds over the area with little relief from the seabreeze. Particularly hot conditions were observed on the 30th in the Southwest District, with Cape Naturaliste observing 37.7 °C, its hottest December day in 56 years of record, while Jarrahwood observed 40.5 °C which is an equal record for December. Busselton Aero observed 41.0 °C, its hottest day in 15 years of record, breaking the annual record of 40.2 °C set on 26 January 2012, while Witchcliffe's 40.6 °C equalled their annual record set on 26 January 2012 in 13 years of record.

Minimum temperatures

Minimum temperatures during December 2012 were above- to very-much-above-average across most of the State, with areas of highest on record in the west Pilbara, east Pilbara and adjacent west Kimberley. Overnight temperatures were up to 2 °C warmer than normal across much of the state, with patches of up to 3 °C above average across central and northwestern parts and a small area of up to 4 °C above normal in the far west Pilbara. In contrast, temperatures were below- to very-much-below-average in the remaining Kimberley and northeastern Northern Interior with an area of up to 2 °C below average in the southwest Kimberley and northeastern Northern Interior. A number of sites in the Pilbara observed their warmest December on record, with several daily December records broken. Particularly high minima were observed on the 29th and 30th in the Lower West and Southwest with several sites breaking December records.

When averaged across WA as a whole, the mean minimum temperature during December 2012 was well above average and ranked as the third warmest December on record. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) also saw well above normal overnight minima, with the region observing its fourth warmest December, continuing a run of above average monthly mean minima in which only two months since November 2010 have recorded below average overnight temperatures (May 2012 and July 2012). Comparable temperature records commenced in 1950.

A ridge developed along the south coast to begin December 2012, resulting in cool mornings over much of southern WA from the 1st to 3rd. WA's coolest temperature for December 2012 occurred on the 1st, with Wandering in the Great Southern observing a minimum of just 3.8 °C. A warm morning was observed in southern parts of the SWLD on the 5th, with minimum temperatures in the Great Southern and Central Wheat Belt in the low twenties, well above the December average, which is generally in the low to mid-teens. Warm conditions were observed in northern WA on the 9th and 10th, with temperatures in the high-twenties to low-thirties at some locations in the Pilbara and Kimberley. Fitzroy Crossing Aerodrome recorded a minimum temperature of 31.1 °C on the 9th, which was its second highest December minimum since records commenced in 1997, only behind a minimum of 32.1 °C on 15 December 2009. Mandora observed the highest minimum temperature in the state on the 10th with 30.7 °C, which was its second hottest night in December in 47 years of record, and its hottest night since its December record was set at 32.4 °C on 12 December 1993. Warm minima were experienced in northern parts of WA on the morning of the 24th, with minimum temperatures in the Pilbara and Kimberley in the high twenties to low thirties. Emu Creek Station observed its warmest December night in 40 years of record with 32.7 °C which was also the warmest night in December 2012. Learmonth also observed their warmest December minimum with 29.2 °C. The warm overnight conditions continued through much of central and southwestern WA through to the end of the month, complimenting the hot daytime temperatures. Particularly warm minima were observed on the 29th in the Lower West and Southwest districts, where Perth Airport and Karnet observed their warmest December minima in 59 and 47 years of record respectively, while the 24.3 °C at Cape Naturaliste on the 30th was their equal highest December minima in 56 years of record.

Tropical Cyclones

Tropical cyclone Mitchell formed out of a low well to the northwest of the Pilbara coast during the morning of the 29th. Mitchell moved in a generally south-southwest direction, remaining off the coast and weakening below cyclone strength during the morning of the 30th. Mitchell was a category 1 system and the first tropical cyclone for the Western Region in the 2012/13 season.

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Extremes in December 2012
Hottest day	47.3 °C at Emu Creek Station on the 23rd
Warmest days on average	40.7 °C at Marble Bar
Coolest days on average	22.3 °C at Albany
Coldest day	16.6 °C at Mount Barker on the 12th
Coldest night	3.8 °C at Wandering on the 1st
Coolest nights on average	12.3 °C at Jacup
Warmest nights on average	27.3 °C at Broome Airport
Warmest night	32.7 °C at Emu Creek Station on the 24th
Wettest overall	258.6 mm at Mount Hart Station
Wettest day	210.8 mm at Yourdamung Lake on the 13th
Highest wind gust	104 km/h at Dalwallinu on the 9th

Extremes Maps Records Summaries Important notes the top

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Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Extremes Maps Records Summaries Important notes the top

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Record highest December daily rainfall
	Highest daily rainfall in December 2012 (mm)		Previous wettest for December		Years of record
Collie	157.2	on the 13th	42.0	on the 24th in 1987	106
Wilgarrup	48.2	on the 11th	47.0	on the 25th in 1925	106
Brunswick Junction	77.6	on the 12th	33.1	on the 28th in 1984	104
Boyanup	68.8	on the 13th	45.0	on the 4th in 2001	102
Wialki	39.0	on the 6th	35.1	on the 7th in 1958	80
Kondut	43.0	on the 10th	40.2	on the 17th in 2007	78
Bonnie Rock	38.0	on the 6th	35.6	on the 19th in 1978	75
Roelands	75.2	on the 12th	37.8	on the 31st in 1959	71
Ferguson Valley	87.0	on the 13th	33.0	on the 4th in 2001	41
Medina Research Centre	35.6	on the 12th	26.8	on the 13th in 2011	30

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Record highest total December rainfall
	Total rainfall for December 2012 (mm)	Previous wettest for December		Years of record	Average for December
Collie	170.4	80.6	in 1913	114	17.4
Boyanup	117.2	82.2	in 1913	112	16.0
Millstream	137.1	129.0	in 1988	111	29.2
Wilgarrup	81.6	81.3	in 1944	109	21.7
Brunswick Junction	100.4	64.3	in 1944	104	15.6
Trayning	78.0	77.6	in 2011	102	12.3
Turee Creek	133.0	130.3	in 1975	88	23.9
Roelands	132.6	61.2	in 1944	71	16.4
Neds Creek	77.8	72.6	in 1995	66	17.0
Wokalup	60.8	54.4	in 1951	60	15.7
Yalleen	139.3	110.6	in 2000	53	26.4
Mininer	90.7	88.0	in 1975	49	17.4
Ferguson Valley	142.8	68.4	in 2001	41	17.9
Mosman Park	41.2	33.9	in 1991	35	6.6
Medina Research Centre	56.2	51.8	in 2011	30	12.1

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Record highest December temperature
	Highest temperature in December 2012 (°C)		Previous warmest for December		Years of record	Average for December
Cape Naturaliste	37.7	on the 30th	37.6	on the 26th in 2007	56	23.6
Jarrahwood	40.5	on the 30th	= 40.5	on the 26th in 2007	30	26.9

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Record highest December mean daily maximum temperature
	Mean daily maximum temperature for December 2012 (°C)	Previous warmest for December		Years of record	Average for December
Broome Airport	36.3	36.0	in 1951	73	33.8

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Record highest December daily minimum temperature
	Highest daily minimum temperature in December 2012 (°C)		Previous warmest for December		Years of record	Average for December
Perth Airport	27.5	on the 29th	26.9	on the 24th in 1960	69	14.9
Cape Naturaliste	24.3	on the 30th	= 24.3	on the 26th in 2007	56	13.9
Bidyadanga	30.0	on the 9th	29.6	on the 24th in 2006	54	25.7
Karnet	23.5	on the 29th	22.6	on the 29th in 2009	47	13.4
Emu Creek Station	32.7	on the 24th	32.3	on the 21st in 2004	41	22.3
Learmonth Airport	29.2	on the 24th	27.6	on the 30th in 1994	38	20.8

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Record highest December mean daily minimum temperature
	Mean daily minimum temperature for December 2012 (°C)	Previous warmest for December		Years of record	Average for December
Port Hedland Airport	26.6	26.1	in 1962	64	24.0
Bidyadanga	27.1	= 27.1	in 2002	53	25.7
Mandora	26.5	26.3	in 1990	47	24.3
Onslow Airport	25.3	24.7	in 1973	46	22.2
Narembeen	16.8	= 16.8	in 1977	44	14.4
Emu Creek Station	24.8	24.7	in 1979	40	22.3
Telfer Aero	26.9	26.7	in 2003	38	25.3
Learmonth Airport	23.3	23.0	in 2010	37	20.8

Extremes Maps Records Summaries Important notes the top

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Summary statistics for December 2012
	Maximum temperatures for December (°C)				Minimum temperatures for December (°C)				Rainfall for December (millimetres)
	Mean for December 2012	Diff from average	Highest for December 2012		Mean for December 2012	Diff from average	Lowest for December 2012		Total for December 2012	Average for December	Rank of December 2012	Fraction of December average
North Kimberley (district 01)
Doongan	34.5	0.0	38.0	8th	22.5	-0.6	17.9	10th	228.2	222.7	average	102%
Kalumburu	35.4	+0.1	38.6	6th	24.5	-0.5	22.3	7th	219.8	235.8	average	93%
Mount Elizabeth	34.3	+0.2	39.3	8th	22.1	-0.2	20.4	27th	195.1	166.9	high	117%
Truscott	35.5		37.8	6th	26.2		20.9	25th
Wyndham	38.0	-0.2	42.9	7th	26.4	-0.6	21.7	27th	186.7	151.0	high	124%
Wyndham Aero	38.6	+0.7	43.8	7th	26.2	-0.6	21.5	27th	138.2	129.5	average	107%
East Kimberley (district 02)
Argyle Aerodrome	38.1	+0.9	44.0	7th	25.4	-0.5	21.4	19th
Halls Creek Airport	37.5	-0.3	43.5	8th	24.2	-0.5	20.4	19th	83.0	82.2	average	101%
Kununurra Aero	38.1	+1.0	43.2	6th	24.8	-0.6	20.6	27th	153.2	135.9	average	113%
Warmun	37.8	-0.6	42.7	8th	24.6	-0.6	21.6	19th	177.0	115.2	high	154%
West Kimberley (district 03)
Bidyadanga	37.5	+2.6	45.3	9th	27.1	+1.4	23.5	23rd	121.4	54.9	high	221%
Broome Airport	36.3	+2.5	43.0	9th	27.3	+0.8	22.6	29th	25.4	55.6	average	46%
Curtin Aero	39.0	+0.6	43.4	8th	24.8	-0.2	22.0	22nd	195.6	149.0	average	131%
Cygnet Bay	35.4	+0.6	38.7	5th	25.7	+0.3	22.5	25th	71.0	75.4	average	94%
Derby Aero	38.4	+1.3	43.3	8th	25.8	-0.5	22.6	3rd	77.4	70.1	average	110%
Fitzroy Crossing Aero	39.7	+0.6	45.0	8th	25.6	-0.1	22.0	22nd	130.6	122.6	average	107%
West Roebuck	37.8	+2.0	45.0	9th	26.1	+0.8	22.3	29th	66.8	101.1	low	66%
De Grey (district 04)
Karratha Aero	36.6	+0.9	41.1	24th	27.1	+1.7	19.8	1st	4.6	12.5	average	37%
Legendre Island	33.1		35.5	7th	26.8		24.0	1st
Mandora	38.4	+1.7	43.3	9th	26.5	+2.2	23.0	12th	6.0	33.5	average	18%
Marble Bar	40.7	-1.0	45.3	24th	26.2	+0.1	20.9	15th
Pardoo Station	37.9	+1.6	42.0	9th	26.4	+1.7	21.0	12th	13.2	23.5	average	56%
Port Hedland Airport	37.6	+1.0	42.7	10th	26.6	+2.6	19.7	1st	0.2	17.9	average	1%
Roebourne	39.1	+0.1	44.6	24th	26.7	+1.8	21.0	1st	14.4	11.0	high	131%
Roebourne Aero	39.0	-0.2	44.4	24th	26.3	+1.7	19.4	1st	19.4	6.8	high	285%
Fortescue (district 05)
Barrow Island Airport	34.4	+2.4	38.8	24th	26.2	+1.9	23.4	2nd	53.2	6.6	v high	806%
Learmonth Airport	37.8	+1.0	46.6	23rd	23.3	+2.5	16.5	1st	10.6	6.6	high	161%
Mardie	37.8	+0.2	42.3	24th	25.9	+3.0	18.4	1st
Onslow Airport	36.8	+0.9	41.4	10th	25.3	+3.1	21.1	2nd	7.0	3.6	high	194%
Wittenoom	38.3	-1.3	44.5	24th	24.9	-0.6	20.1	13th	64.4	49.6	high	130%
West Gascoyne (district 06)
Carnarvon Airport	30.6	+1.3	39.9	28th	21.8	+1.2	16.9	1st	14.4	5.7	v high	253%
Denham	30.2	+1.1	38.0	28th	21.4	+1.0	17.4	31st	12.2	2.4	v high	508%
Emu Creek Station	40.1	+0.3	47.3	23rd	24.8	+2.5	19.0	1st	20.5	13.3	high	154%
Shark Bay Airport	32.9	+0.8	39.2	29th	20.5	+0.9	15.4	1st	13.6	12.9	high	105%
East Gascoyne (district 07)
Newman Aero	36.9	-2.1	44.4	24th	23.7	-0.1	18.9	6th	81.0	38.0	v high	213%
Paraburdoo Aero	38.6	-1.7	44.6	23rd	24.4	0.0	20.4	6th	33.6	28.7	high	117%
Murchison (district 07A)
Meekatharra Airport	35.8	-0.6	42.8	24th	22.7	+0.7	15.7	1st	78.2	14.5	v high	539%
Mount Magnet Aero	36.6	+1.2	44.1	21st	22.3	+1.3	13.5	1st	28.4	24.6	average	115%
North Coast (district 08)
Carnamah	35.2	+1.7	43.8	26th	18.4	+2.4	9.6	1st	16.2	9.2	high	176%
Dalwallinu	33.7	+0.6	42.6	26th	17.0	+1.3	7.0	1st	45.2	16.0	v high	283%
Geraldton Airport	32.6		43.9	31st	17.9		10.1	1st	15.4
Geraldton Airport Comparison	32.5	+3.0	42.8	3rd	17.8	+1.5	9.3	1st
Kalbarri	33.0	+1.9	42.0	3rd	19.1	+1.7	10.5	2nd	5.2	4.0	high	130%
Morawa Airport	35.3	+0.2	43.7	26th	18.9	+1.6	9.2	1st	56.8	16.3	v high	348%
Mullewa	35.8	+1.4	44.5	26th	19.7	+2.7	11.3	1st	10.6	8.4	high	126%
Wongan Hills	33.8	+1.4	42.2	26th	17.8	+2.0	7.7	1st	16.8	10.2	high	165%
Central Coast (district 09)
Badgingarra Research Stn	32.9	+0.9	41.8	26th	16.7	+1.7	7.1	1st
Bickley	29.2	+1.3	38.6	31st	15.4	+1.9	8.2	1st	36.2	13.8	high	262%
Champion Lakes	30.6		40.8	31st	18.1		9.6	1st	75.6
Garden Island HSF	27.0	+1.6	36.6	30th	18.5	+1.4	13.2	1st	52.0	13.3	v high	391%
Gingin Aero	31.7	+1.2	41.5	31st	15.8	+1.5	7.8	1st	57.6	10.8	v high	533%
Gosnells City	32.3	+2.0	43.0	31st					25.4	11.7	high	217%
Jandakot Aero	30.7	+1.8	41.2	31st	16.4	+1.8	6.6	8th	28.8	11.0	v high	262%
Jurien Bay	30.6	+2.5	42.0	31st	16.7	+1.1	9.0	8th	23.8	7.2	v high	331%
Karnet	29.1	+0.9	38.9	31st	15.2	+1.8	5.2	1st	31.6	18.5	high	171%
Lancelin	29.7	+2.4	41.5	31st	17.3	+1.1	11.5	8th	33.4	8.4	v high	398%
Pearce RAAF	32.7	+2.5	42.7	31st	16.4	+1.9	6.7	1st	42.8	10.8	v high	396%
Perth Airport	31.4	+2.5	42.2	31st	16.8	+1.9	6.2	1st	22.8	11.4	high	200%
Perth Metro*	31.2	+2.3	42.1	31st	17.8	+1.5	9.4	8th	20.2	13.3	v high	151%
Rottnest Island	26.8	+1.8	37.5	31st	18.8	+1.3	14.4	1st	27.6	8.2	v high	337%
Swanbourne	30.0	+2.2	40.6	31st	17.9	+1.4	11.4	8th	52.2	12.9	v high	405%
South Coast (district 09A)
Albany	22.3	+0.4	30.3	5th	15.6	+1.6	8.9	28th	53.2	29.9	high	178%
Albany Airport	24.6		32.9	25th	13.4		6.9	2nd	54.0
Albany Airport Comparison	24.5	+1.4	33.1	30th	13.4	+0.9	7.1	9th	41.6	27.8	high	150%
Bridgetown	28.8	+1.5	40.3	31st	12.8	+1.8	5.8	2nd	72.0	20.6	high	350%
Bunbury	27.8	+0.6	39.2	30th	15.4	+1.9	5.4	1st	121.4	21.7	v high	559%
Busselton Aero	29.3	+1.4	41.0	30th	14.3	+1.9	4.9	1st	27.2	10.4	high	262%
Cape Leeuwin	23.3	+1.5	29.7	31st	17.3	+1.5	13.7	1st	9.4	20.9	low	45%
Cape Naturaliste	26.7	+3.1	37.7	30th	15.8	+1.9	11.1	2nd	7.6	13.4	average	57%
Collie East	29.3	+1.0	39.4	30th	13.1	+1.6	4.5	1st	155.0	26.9	v high	576%
Donnybrook	29.2	+1.0	38.8	28th	14.5	+2.1	5.6	1st	81.5	16.6	v high	491%
Dwellingup	29.3	+2.1	39.5	31st	14.4	+1.9	4.3	1st	50.6	20.9	v high	242%
Esperance	26.3	+1.8	38.8	31st	15.2	+0.8	8.8	2nd	15.4	18.8	average	82%
Esperance Aero	28.5	+3.0	39.6	21st	14.2	+0.8	8.3	2nd	19.6	20.4	average	96%
Harvey	29.9	+1.5	40.0	30th					75.4	19.1	v high	395%
Hopetoun North	23.2	-1.0	28.6	25th					9.6	25.2	average	38%
Jarrahwood	29.2	+2.3	40.5	30th	13.3	+2.2	4.0	1st	43.0	17.5	v high	246%
Mandurah	28.6	+1.9	38.4	28th	18.8	+1.8	12.7	1st	80.0	20.9	high	383%
Manjimup	27.8	+3.0	40.6	30th	13.4	+1.7	7.8	8th	41.6	25.5	high	163%
North Walpole	24.1		35.9	31st	14.0		9.1	9th	54.8
Pemberton	26.6	+2.8	39.6	31st	13.5	+1.6	7.1	1st	38.2	34.7	average	110%
Rocky Gully	28.4	+3.1	40.9	30th	12.5	+1.4	6.0	2nd	23.0	31.8	average	72%
Windy Harbour	22.8	+0.9	31.3	31st	14.7	+1.6	9.0	20th	41.3	28.7	high	144%
Witchcliffe	27.3	+2.7	40.6	30th	13.7	+1.4	7.6	2nd	32.6	15.8	high	206%
North Central (district 10)
Bencubbin	33.5	+1.1	42.4	26th	18.0	+2.1	9.4	1st	23.9	13.5	high	177%
Cunderdin Airfield	34.4	+1.8	42.7	26th	16.7	+1.9	6.3	1st	20.2	9.1	high	222%
Kellerberrin	33.6	+1.6	42.1	30th	16.3	+1.3	6.3	1st	29.5	13.5	high	219%
Merredin	33.6	+1.7	42.5	26th	17.3	+1.6	8.5	1st	35.0	14.3	high	245%
Northam	33.8	+1.7	42.2	26th	16.5	+1.2	6.3	1st	23.3	9.4	high	248%
York	33.8	+1.8	42.0	31st	15.5	+1.5	5.0	1st	16.6	12.5	average	133%
South Central (district 10A)
Beverley	34.0	+1.9	42.2	31st	16.1	+1.7	5.6	1st	10.6	10.4	average	102%
Brookton	33.0	+2.1	41.4	31st	15.5	+2.1	4.1	1st	2.7	10.4	average	26%
Corrigin	32.8	+2.4	41.6	31st	16.2	+2.2	5.0	1st	8.7	13.1	average	66%
Hyden	33.2	+1.5	42.0	31st	15.9	+2.1	6.5	1st	12.2	15.1	average	81%
Jacup	28.7	+2.9	39.7	21st	12.3	+0.8	4.8	1st	25.8	27.6	average	93%
Katanning	30.7	+2.4	40.5	30th	13.4	+1.7	6.0	1st	78.2	27.9	high	280%
Lake Grace	31.4	+2.2	40.6	31st	15.2	+1.8	6.8	1st	28.8	20.4	average	141%
Narembeen	33.7	+1.8	41.9	26th	16.8	+2.4	7.8	1st	17.5	13.1	high	134%
Narrogin	30.9	+2.0	40.5	30th	14.9	+2.6	4.9	1st	29.6	14.2	high	208%
Newdegate Research Station	31.4	+2.3	40.8	21st	13.5	+1.8	4.2	1st	11.6	15.2	average	76%
Ongerup	29.3	+2.2	39.0	30th	13.8	+1.4	5.8	1st	40.4	17.4	v high	232%
Pingelly	32.0	+2.1	40.6	31st	15.7	+1.8	6.9	8th	8.4	12.6	average	67%
Ravensthorpe	28.7	+1.5	40.0	21st	13.8	+1.0	6.9	1st	13.1	23.5	average	56%
Wagin	30.9	+1.7	40.7	30th	14.9	+2.0	6.4	1st	67.0	13.2	v high	508%
Wandering	31.8	+1.7	41.1	30th	13.7	+1.8	3.8	1st	22.2	19.5	high	114%
Eucla (district 11)
Balladonia	31.8	+1.6	42.2	31st	14.3	+1.0	9.5	1st	8.2	18.4	average	45%
Eucla	28.2	+3.4	41.0	7th	15.9	+0.9	8.0	2nd	48.0	18.5	v high	259%
Eyre	29.0	+3.7	45.4	22nd	13.3	-0.8	4.0	2nd	43.4	20.3	high	214%
Forrest	33.2	+2.0	43.6	22nd	15.1	+0.3	10.3	5th	19.0	26.4	average	72%
Red Rocks Point	25.1	+1.1	39.2	22nd	16.8	+0.5	9.0	2nd	43.8	20.6	high	213%
South East (district 12)
Bulga Downs	36.8	+1.1	42.3	22nd	21.5	+1.6	13.0	1st	33.0	13.6	high	243%
Kalgoorlie-Boulder Airport	33.6	+1.7	40.9	31st	18.6	+2.0	10.9	1st	6.2	16.3	average	38%
Laverton Aero	35.7	+2.4	43.8	22nd	21.7	+2.2	15.3	1st	32.6	28.5	average	114%
Leinster Aero	36.4	+1.3	43.0	22nd	23.3	+2.4	15.5	1st	27.4	28.5	average	96%
Leonora					21.8	+1.8	14.8	1st	17.6	16.8	average	105%
Leonora Aero	36.3		43.1	22nd	22.1		15.3	1st	17.8
Munglinup West	29.4	+2.2	40.6	21st	13.7	+1.1	7.1	1st	12.6	25.8	average	49%
Norseman Aero	32.6	+1.8	41.6	31st	15.0	+1.2	5.9	1st	13.6	24.6	average	55%
Salmon Gums Res.Stn.	30.8	+1.9	41.3	31st	13.2	+1.0	5.1	2nd	9.6	20.1	average	48%
Southern Cross Airfield	34.2	+1.6	43.8	21st	17.6	+2.4	9.7	1st	21.6	17.6	high	123%
North East (district 13)
Carnegie	37.3	0.0	44.6	23rd	24.2	+2.3	19.6	13th	7.9	23.8	average	33%
Giles Meteorological Office	36.4	+0.7	43.8	24th	23.1	+1.3	17.9	10th	36.8	45.1	average	82%
Telfer Aero	40.0	-0.2	45.5	24th	26.9	+1.6	21.0	13th
Warburton Airfield	38.3	+1.8	44.6	23rd	23.7	+2.5	21.2	6th	10.2	31.5	average	32%
Wiluna	37.2	+0.4	44.0	23rd	22.9	+1.8	15.0	1st	28.8	22.3	high	129%
Offshore Islands (district 200)
Christmas Island Aero	28.5	+0.8	30.6	28th
Cocos Island Airport	29.3	-0.1	30.4	31st	25.4	+0.8	23.3	5th	125.2	115.6	high	108%
Varanus Island	32.7	+1.5	35.2	10th	26.2	+1.5	23.8	1st	6.8	2.4	high	283%

Extremes Maps Records Summaries Important notes the top

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