Victoria in spring 2011: 3rd warmest overall

  • 3rd warmest spring overall, 3rd warmest spring average minimum temperatures
  • 6th warmest spring average maximum temperatures
  • Wetter than normal in the Central district and Gippsland, drier in the southwest, close to average elsewhere.

Rainfall

Preliminary rainfall data shows the state average rainfall was 181 mm. Rainfall totals for most of the state were close to average. Parts of the South West and Wimmera districts were drier than normal. Wetter than usual totals were recorded in parts of the Central and North Central districts and Gippsland. The wettest station overall was Mount Baw Baw with 657.0 mm. Many sites in the southeast observed their highest total spring rainfall on record. The wettest single day was 29 September when Tolmie (Mount Tabletop Repeater) recorded 101.0 mm. Some sites had their highest spring daily rainfall on record. There is a map of rainfall deciles below.

Temperature

Preliminary temperature data shows that the state average mean temperature (an average of the maximum and minimum temperatures) was 1.28 C warmer than usual. This makes spring 2011 the 3rd warmest spring average mean temperature on record. The warmest station on average was Mildura Airport with 18.1 C and the coolest on average was Mount Hotham with 4.5 C.

Maximum temperature

The state average maximum temperature for spring was 1.56 C warmer than normal, making spring 2011 the 6th warmest spring average maximum temperature on record. Average maximum temperatures were generally between 1 C and 2 C warmer than usual. The hottest day was 18 November when Walpeup Research recorded 39.0 C. The warmest days on average were at Mildura Airport with 25.7 C, whilst Mount Hotham recorded the coolest on average with 7.6 C. The coldest day was 9 September when Mount Hotham recorded -3.5 C. Some sites had their highest spring mean daily maximum temperature on record. There is a map of maximum temperature anomalies below.

Minimum temperature

The state average minimum temperature for spring was 1.03 C warmer than normal, making spring 2011 the 3rd warmest spring average minimum temperature on record. Average minimum temperatures where mostly within 1 C of their long-term means. There were patches of greater than 1 C anomalies, most notably in the east, southwest and southern central parts of the state. The coldest night was 12 September when Mount Hotham recorded -7.9 C. The coolest nights on average were recorded at Mount Hotham with 1.4 C, whilst Gabo Island Lighthouse recorded the warmest on average with 12.2 C. The warmest night was 19 November when Mildura Airport recorded 23.5 C. Swan Hill Aerodrome recorded its lowest spring temperature on record. Shepparton Airport recorded its warmest spring night (highest daily minimum temperature) on record. Some sites had their highest spring mean daily minimum temperature on record. There is a map of minimum temperature anomalies below.

Further information

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Extremes in spring 2011
Hottest day 39.0 C at Walpeup Research on 18 Nov
Warmest days on average 25.7 C at Mildura Airport
Coolest days on average 7.6 C at Mount Hotham
Coldest day -3.5 C at Mount Hotham on 9 Sep
Coldest night -7.9 C at Mount Hotham on 12 Sep
Coolest nights on average 1.4 C at Mount Hotham
Warmest nights on average 12.2 C at Gabo Island Lighthouse
Warmest night 23.5 C at Mildura Airport on 19 Nov
Warmest on average overall 18.1 C at Mildura Airport
Coolest on average overall 4.5 C at Mount Hotham
Wettest overall 657.0 mm at Mount Baw Baw
Wettest day 101.0 mm at Tolmie (Mount Tabletop Repeater) on 29 Sep
Highest wind gust 135 km/h at Mount Hotham on 19 Sep

Maps

Anomaly in mean maximum temperature

Map of Anomaly in mean maximum temperature

Anomaly in mean minimum temperature

Map of Anomaly in mean minimum temperature

Rainfall deciles

Map of Rainfall deciles


Record highest spring daily rainfall
Highest daily rainfall
in spring 2011 (mm)
Previous wettest
for spring
Years of
record
Wodonga 63.0 on 10 Nov 60.7 on 27 Oct 1945 88
Lauriston Reservoir 86.6 on 29 Sep 80.0 on 2 Nov 1993 64
Springvale Necropolis 67.0 on 30 Sep 61.8 on 19 Nov 1978 64
Avalon Airport 85.2 on 27 Nov 71.0 on 17 Oct 1983 31
Myrtleford 72.0 on 27 Nov 48.4 on 14 Nov 2010 16
Tintaldra (Warraroong) 84.0 on 29 Sep 48.6 on 16 Oct 2010 13
Holland Ck at Wrightley 72.6 on 29 Sep 67.0 on 28 Nov 2010 11
Hurdle Ck at Bobinawarrah 48.6 on 26 Nov 39.8 on 14 Nov 2010 11
Moorabool River at Lal Lal 37.8 on 27 Nov 33.6 on 28 Nov 2010 11
Tolmie (Mount Tabletop Repeater) 101.0 on 29 Sep 74.0 on 28 Nov 2010 11
Willowmavin (Avalon Station) 54.4 on 29 Sep 54.0 on 27 Nov 2010 11
Yarra River @ Warrandyte 59.6 on 27 Nov 56.2 on 31 Oct 2010 11
Kilmore Racecourse 56.0 on 29 Sep 51.0 on 28 Nov 2010 10
Leigh River @ Mount Mercer 47.0 on 27 Nov 43.0 on 31 Oct 2010 10



Record highest total spring rainfall
Total rainfall
for spring 2011 (mm)
Previous wettest
for spring
Years of
record
Average for
spring
Coldstream 341.2 330.4 in 2004 17 216.6
Avon River @ The Channel 341.2 238.8 in 2007 11 179.1
Mitchell River @ Glenaladale 328.8 267.4 in 2008 11 199.2
Traralgon Creek at Koornalla 314.0 267.3 in 2003 11 211.1
Traralgon EPA 225.6 221.0 in 2001 11 178.0
Viewbank (ARPANSA) 327.8 311.6 in 2010 11 208.5
Wonnangatta River @ Waterford 328.2 283.0 in 2010 11 201.1
Yarra River @ Warrandyte 340.2 311.0 in 2004 11 202.1
Boolarra South 400.0 353.0 in 2004 10 304.6
Moorabool River at Morrisons 268.0 222.0 in 2003 10 159.4
Reeves Knob 418.6 360.0 in 2010 10 297.8



Record highest spring mean daily maximum temperature
Mean daily maximum
temperature
for spring 2011 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Portland (Cashmore Airport) 18.2 17.9 in 2009 29 16.8
Cerberus 19.6 = 19.6 in 2009 19 18.3
Cranbourne Botanic Gardens 20.1 = 20.1 in 2009 19 18.7
Port Fairy AWS 19.1 = 19.1 in 2009 19 18.1
Cape Nelson Lighthouse 18.3 18.0 in 2009 15 17.1



Record highest spring daily minimum temperature
Highest daily minimum
temperature
in spring 2011 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Shepparton Airport 21.0 on 29 Nov = 21.0 on 27 Nov 1997 16 7.6



Record lowest spring temperature
Lowest temperature
in spring 2011 (C)
Previous coolest
for spring
Years of
record
Average for
spring
Swan Hill Aerodrome -1.6 on 12 Sep -1.2 on 1 Sep 2007 15 8.5



Record highest spring mean daily minimum temperature
Mean daily minimum
temperature
for spring 2011 (C)
Previous warmest
for spring
Years of
record
Average for
spring
Moorabbin Airport 10.6 = 10.6 in 2005 40 9.4
Dartmouth Reservoir 8.2 8.1 in 2009 31 7.0
Noojee (Slivar) 8.1 7.8 in 2005 26 6.7
Aireys Inlet 10.4 10.3 in 2000 19 9.4
Frankston AWS 11.8 = 11.8 in 2009 19 10.6
Port Fairy AWS 10.4 10.3 in 2000 19 9.5
Cape Nelson Lighthouse 11.3 = 11.3 in 2009 15 10.5
Warrnambool Airport NDB 8.7 = 8.7 in 2000 12 7.6
Orbost 10.0 = 10.0 in 2009 10 9.3


Summary statistics for spring 2011
Maximum temperatures
for spring
(C)
Minimum temperatures
for spring
(C)
Rainfall
for spring
(millimetres)
Mean for
spring
2011
Diff
from
average
Highest for
spring
2011
Mean for
spring
2011
Diff
from
average
Lowest for
spring
2011
Total for
spring
2011
Average
for
spring
Rank of
spring
2011
Fraction of
spring
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 22.4 +0.7 35.9 29 Nov 9.0 +0.6 -0.1 7 Sep 210.8 179.1 average 118%
Hume Reservoir 22.3 +1.2 36.0 29 Nov 10.1 +0.9 -0.5 12 Sep 224.5 184.7 average 122%
North Mallee (district 76)
Mildura Airport 25.7 +1.8 37.7 18 Nov 10.5 +0.6 0.2 7 Sep 78.8 84.0 average 94%
Ouyen (Post Office) 24.9 +1.2 37.6 18 Nov 10.0 +1.0 2.0 7 Sep 97.8 95.8 average 102%
Walpeup Research 24.9 +1.8 39.0 18 Nov 9.9 +0.9 0.1 25 Sep 104.6 94.4 average 111%
South Mallee (district 77)
Hopetoun Airport 24.5 38.9 18 Nov 8.3 -3.1 12 Sep 95.2
Swan Hill Aerodrome 24.8 +0.9 37.8 29 Nov 9.0 +0.5 -1.6 12 Sep 90.8 101.7 average 89%
North Wimmera (district 78)
Nhill Aerodrome 22.7 37.7 18 Nov 8.5 -0.2 25 Sep 111.4
Warracknabeal Museum 23.3 +1.5 37.2 18 Nov 8.6 +0.7 0.4 15 Sep 88.2 114.0 average 77%
South Wimmera (district 79)
Edenhope Airport 21.0 35.9 18 Nov 8.7 0.9 25 Sep 99.6
Grampians (Mount William) 12.3 26.4 18 Nov 4.3 -1.6 12 Sep 206.2
Horsham Aerodrome 22.3 +0.6 37.2 18 Nov 7.0 +0.9 -2.5 25 Sep 94.6 106.2 low 89%
Horsham Polkemmet Rd 22.6 +1.5 37.6 18 Nov 7.2 -0.2 -1.5 15 Sep 132.0 123.9 average 107%
Kanagulk 20.8 36.3 18 Nov 8.2 1.2 17 Oct 96.6
Longerenong 22.2 +1.3 37.9 18 Nov 7.4 +0.5 -1.4 15 Sep 101.2 113.1 average 89%
Pyrenees (Ben Nevis) 15.7 29.4 18 Nov 6.5 0.4 7 Sep 160.6
Stawell Aerodrome 20.7 +0.7 35.3 18 Nov 8.7 +1.1 0.5 15 Sep 103.0 139.8 low 74%
Lower North (district 80)
Charlton 23.3 37.6 18 Nov 8.7 -1.1 12 Sep 95.6
Echuca Aerodrome 23.6 +1.5 37.5 29 Nov 8.8 +0.1 -0.1 8 Sep 76.6 114.0 low 67%
Kerang 24.4 +1.5 37.6 29 Nov 10.1 +1.2 1.8 7 Sep 80.1 103.4 average 77%
Kyabram DPI 23.1 +1.9 38.5 29 Nov 8.7 +1.1 -1.2 8 Sep 106.8 121.7 average 88%
Upper North (district 81)
Bendigo Airport 21.6 +1.2 35.2 29 Nov 8.1 +1.3 -2.6 12 Sep 145.4 147.6 average 99%
Shepparton Airport 22.6 +0.7 37.9 29 Nov 8.5 +0.9 -0.8 8 Sep 94.0 128.8 low 73%
Tatura Inst Sustainable Ag 22.3 +1.3 37.3 29 Nov 8.5 +0.8 -1.3 7 Sep 88.2 132.6 low 67%
Yarrawonga 23.4 +0.9 38.0 29 Nov 8.8 +1.0 -2.1 12 Sep 128.2 126.4 average 101%
Lower Northeast (district 82)
Benalla Airport 22.1 35.8 29 Nov 8.3 -1.9 12 Sep 175.0
Corryong Airport 21.4 32.9 29 Nov 6.6 -2.1 8 Sep 295.4
Dartmouth Reservoir 20.7 +0.5 32.0 29 Nov 8.2 +1.2 -1.7 12 Sep 266.8 276.1 average 97%
Hunters Hill 16.5 +0.7 26.8 29 Nov 7.7 +0.6 -1.4 10 Sep 352.4 317.1 average 111%
Rutherglen Research 22.1 +1.0 36.3 29 Nov 6.9 +0.5 -4.0 12 Sep 162.0 158.9 average 102%
Strathbogie 18.6 +0.8 31.2 29 Nov 6.0 +0.5 -4.1 8 Sep 226.8 246.9 average 92%
Wangaratta Aero 22.2 +0.8 36.0 29 Nov 7.6 +0.7 -2.5 12 Sep 137.6 160.2 average 86%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 14.7 +0.3 23.5 29 Nov 3.4 +0.5 -6.5 12 Sep 282.2 251.3 average 112%
Falls Creek 9.4 +0.8 19.1 29 Nov 2.4 +0.9 -7.0 12 Sep 499.8 382.9 high 131%
Mount Hotham 7.6 +0.4 17.9 29 Nov 1.4 +0.5 -7.9 12 Sep 574.0 404.9 high 142%
Omeo 18.7 28.3 29 Nov 5.4 -4.4 12 Sep 245.6
East Gippsland (district 84)
Combienbar AWS 19.0 +0.8 31.1 29 Nov 8.6 +0.6 1.9 12 Sep 313.0 281.2 average 111%
Gabo Island Lighthouse 18.0 +0.9 25.6 29 Nov 12.2 +1.0 7.0 10 Sep 189.6 220.6 average 86%
Gelantipy 16.6 +0.3 27.0 29 Nov 6.6 +0.6 -0.7 13 Sep 262.4 227.6 average 115%
Lakes Entrance (Eastern Beach Road) 19.8 35.2 29 Nov 10.2 2.1 3 Sep 298.6
Mallacoota 19.4 +0.5 29.7 29 Nov 10.8 +0.9 4.6 7 Sep 219.2 246.3 average 89%
Mount Nowa Nowa 19.6 +0.7 32.8 29 Nov 9.7 +0.5 3.7 9 Sep 311.8 222.2 high 140%
Orbost 20.6 +0.5 33.8 29 Nov 10.0 +0.7 4.2 18 Oct 197.8 199.2 average 99%
Point Hicks (Lighthouse) 19.6 +1.2 35.5 29 Nov 11.8 +0.8 7.6 7 Sep 220.5 232.2 average 95%
West Gippsland (district 85)
Bairnsdale Airport 20.5 +0.9 34.2 29 Nov 8.1 +0.5 0.2 26 Sep 224.4 196.8 high 114%
East Sale Airport 20.0 +0.8 34.2 29 Nov 8.4 +0.9 -0.1 3 Sep 233.6 173.4 high 135%
Morwell (Latrobe Valley Airport) 20.4 +1.0 34.2 29 Nov 8.3 +0.8 -1.0 8 Sep 262.0 227.5 average 115%
Mount Baw Baw 8.7 -0.1 20.6 29 Nov 2.0 +0.1 -5.9 12 Sep 657.0
Mount Moornapa 18.5 0.0 31.8 29 Nov 8.8 +0.6 2.8 12 Sep 322.4 252.0 high 128%
Noojee (Slivar) 18.8 +0.9 31.2 29 Nov 8.1 +1.4 0.9 3 Oct 427.1 346.6 high 123%
Pound Creek 19.1 32.5 29 Nov 9.2 1.3 3 Oct 249.6
Wilsons Promontory Lighthouse 16.9 +1.2 31.4 29 Nov 11.4 +1.4 6.9 7 Sep 272.8 262.6 average 104%
Yarram Airport 19.6 32.9 29 Nov 8.3 -1.0 8 Sep 209.0
East Central (district 86)
Bundoora (Latrobe University) 20.8 +1.2 33.2 18 Nov 9.8 +1.0 1.9 8 Sep 262.8 195.6 high 134%
Cerberus 19.6 +1.3 33.6 29 Nov 9.7 +0.8 0.8 8 Sep 246.0 190.8 high 129%
Coldstream 20.6 +0.9 32.4 18 Nov 8.4 +1.5 0.3 15 Sep 341.2 216.6 highest 158%
Coldstream Comparison 20.6 32.3 18 Nov 8.3 0.3 15 Sep 340.4
Cranbourne Botanic Gardens 20.1 +1.4 32.9 18 Nov 9.7 +0.8 3.3 2 Sep 332.6 245.4 high 136%
Essendon Airport 20.8 +1.7 34.0 18 Nov 9.8 +1.6 1.6 8 Sep 250.0 171.9 high 145%
Ferny Creek 17.0 29.4 18 Nov 8.7 2.3 7 Sep 489.6
Frankston AWS 18.9 +1.2 30.7 5 Nov 11.8 +1.2 6.0 2 Sep
Melbourne Airport 20.5 +1.3 34.0 18 Nov 9.4 +0.8 2.5 3 Oct 257.8 167.5 v high 154%
Melbourne Regional Office 21.6 +2.0 35.0 18 Nov 11.8 +2.2 5.4 8 Sep 242.4 184.9 high 131%
Moorabbin Airport 20.3 +1.2 33.9 18 Nov 10.6 +1.2 3.5 26 Sep 286.8 200.7 v high 143%
Rhyll 18.9 +1.1 30.8 29 Nov 11.6 +1.0 7.0 8 Sep 248.0 190.3 high 130%
Scoresby Research Institute 20.5 +1.6 33.2 18 Nov 9.6 +0.7 1.5 3 Oct 304.8 252.5 high 121%
Viewbank (ARPANSA) 20.8 +0.4 33.6 18 Nov 9.9 +0.6 1.8 15 Sep 327.8 208.5 highest 157%
Wallan (Kilmore Gap) 16.6 +0.6 29.6 29 Nov 7.9 +0.9 0.5 7 Sep 272.6 184.1 high 148%
Wonthaggi 19.6 +1.6 34.0 29 Nov 10.0 +1.1 3.5 8 Sep 290.1 246.8 high 118%
West Central (district 87)
Avalon Airport 20.8 +0.9 36.0 18 Nov 9.0 +0.7 0.8 8 Sep 266.4 148.9 v high 179%
Breakwater (Geelong Racecourse) 20.6 36.8 18 Nov 10.0 2.3 8 Sep 234.4
Laverton RAAF 20.7 +1.5 35.1 18 Nov 9.4 +1.1 1.5 3 Oct 219.8 160.2 high 137%
Sheoaks 19.3 +1.3 34.2 18 Nov 8.2 +0.8 0.8 8 Sep 239.2 175.1 high 137%
North Central (district 88)
Castlemaine Prison 19.9 +0.8 33.1 18 Nov 7.5 +0.6 -2.1 12 Sep 170.8 170.9 average 100%
Eildon Fire Tower 17.7 +0.8 29.8 29 Nov 8.3 +0.8 1.7 8 Sep 197.8 181.8 average 109%
Lake Eildon 21.0 +1.1 32.5 29 Nov 8.4 +1.0 -0.8 12 Sep 262.8 229.0 average 115%
Mangalore Airport 21.5 +1.0 34.8 29 Nov 8.3 +0.8 -1.8 7 Sep 170.0 153.7 average 111%
Maryborough 21.2 +1.1 35.0 18 Nov 8.4 +1.1 -0.2 15 Sep 126.4 141.7 average 89%
Redesdale 20.8 +1.3 34.4 29 Nov 6.8 +0.8 -2.6 12 Sep 141.6 149.9 average 94%
Western Plains (district 89)
Ararat Prison 20.2 +2.1 35.5 18 Nov 7.7 +1.4 -1.7 17 Oct 108.3 165.5 low 65%
Ballarat Aerodrome 17.9 +1.2 30.7 18 Nov 6.9 +0.6 -2.1 15 Sep 213.2 195.9 average 109%
Westmere 19.7 33.7 18 Nov 6.9 -0.9 3 Oct 111.6
West Coast (district 90)
Aireys Inlet 18.9 +1.2 32.1 18 Nov 10.4 +1.0 4.6 8 Sep 174.4 183.9 average 95%
Cape Nelson Lighthouse 18.3 +1.2 32.8 19 Oct 11.3 +0.8 4.2 8 Sep 145.4 170.9 low 85%
Cape Otway Lighthouse 17.9 +1.1 30.3 18 Nov 11.1 +1.5 5.5 8 Sep 214.2 234.9 average 91%
Casterton 19.8 34.4 18 Nov 8.2 -0.4 8 Sep 142.2
Colac (Mount Gellibrand) 18.3 +1.3 33.2 18 Nov 8.6 +0.9 2.6 8 Sep 159.8 153.7 average 104%
Dartmoor 19.6 34.6 18 Nov 8.7 -0.4 8 Sep 184.2
Hamilton Airport 19.3 +1.5 33.8 18 Nov 7.5 +0.7 0.6 7 Sep 128.4 175.3 low 73%
Mortlake Racecourse 19.6 +1.6 33.3 18 Nov 7.4 +0.9 -0.4 2 Oct 121.8 160.6 low 76%
Port Fairy AWS 19.1 +1.0 31.4 5 Nov 10.4 +0.9 3.5 8 Sep 170.8 168.9 average 101%
Portland (Cashmore Airport) 18.2 +1.4 30.4 19 Oct 9.3 +0.8 2.4 8 Sep 189.2 201.8 average 94%
Portland NTC AWS 17.5 30.6 19 Oct 11.1 4.5 8 Sep
Warrnambool Airport NDB 18.8 +0.8 30.5 5 Nov 8.7 +1.1 1.3 8 Sep 130.4 189.1 low 69%
Weeaproinah 15.0 +1.3 26.0 5 Nov 7.6 +0.8 2.5 8 Sep 528.6 513.3 average 103%

Notes

A Seasonal Climate Summary is prepared to list the main features of the weather in Victoria 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 10 am on Thursday 1 December 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 10 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.

Further information

Media
(03) 9669 4057
Enquiries