Victoria in spring 2010: A wet spring at last!

  • Wettest spring for Victoria since 1993
  • Spring days close to average despite cold start to season
  • Close to normal overnight temperatures

Rainfall

Soggy paddocks across Victoria were again a regular spring-time feature for the first time in more than a decade. Numerous locations across the state had their highest rainfall on record for the September to November period. In fact, Mildura Airport, Melbourne Airport, Castlemaine, Maryborough and Resedale all had their highest spring rainfall on record. Remarkably, Boort, close to Birchip in the Mallee district, recorded its highest spring rainfall since 1889.

Spring 2010 has been the 9th wettest spring on record for the Victorian region. Interestingly, over a dozen locations across the state recorded their highest spring rainfall since 1975, which saw the 3rd highest spring rainfall for the state. Significant rainfall events were the feature of the 2010 Victorian spring, with several memorable rainfall events accumulating to push rainfall totals well above average. Favourable conditions for convection in both the Indian and Pacific Oceans led to enhanced tropical moisture, which was the main factor that contributed to the highest spring rainfall totals for the state since 1993.

Major flooding was observed across northern Victoria in the first week of September with several locations recording multi-day rainfall totals in excess of 200 mm. A downpour on Derby Day provided a heavy track at Flemington Racecourse, where more than 60 mm in the 24 hours till 9am on the 31st October was observed. Humid conditions throughout November were highly unseasonable, with rainfall in the last week of the month almost doubling that usually received for many locations across the state. The wettest location overall was Mount Hotham, which recorded 797.6 mm in spring, more than twice that usually received (395 mm).

Temperature

Maximum temperature

Daytime temperatures across Victoria were below average this spring, despite close to average maximum temperatures throughout October and warm days throughout November. Particularly cool days were experienced state-wide in September, with some locations experiencing average temperatures more than 2C below normal. A series of warm springs in recent years meant that daytime temperatures close to the long-term average were generally perceived as unusually cool.

Temperatures reached 30 C across much of the State in mid-November and extremely humid conditions persisted for the rest of the month as a result of tropical systems and enhanced atmospheric moisture. Much of the Central and Wimmera districts recorded their maximum temperatures for spring on the 22nd of November, with several locations recording temperatures in excess of 34 C. The 12th of November was the hottest day this season, with temperatures across the state soaring over 30 C, particularly across Gippsland. Mildura Airport recorded the season maximum on this day, a very warm 37.5 C.

Particularly cold days were common in September and October, with days below 12 C occurring regularly. The coolest days on average were 6.9 C at Mount Hotham, which also observed the coldest day, a frosty -2.6 C on the 16th of September.

Minimum temperature

Nights were slightly warmer than average for spring overall, with particularly warm nights experienced throughout November. Minimum temperatures in September and October were close to average. Late-season snow falls in October were accompanied by a particularly frosty night state-wide, with temperatures plummeting to below -7 C overnight in the Alpine area on the 16th.

Warm nights were particularly frequent throughout November, Victorians experiencing balmy nights on the 12th and 24th. Mildura Airport recorded the warmest night of the season, a tropical 24 C on the 12th of November. Gabo Island Lighthouse was the warmest overnight location throughout spring, averaging a mild 11.7 C, slightly above the long-term average of 11.2C.

Wintry conditions continued well into spring with overnight temperatures frequently close to zero occurring particularly in elevated areas. Some parts of central and western Victoria also experienced particularly cool nights on the 7th, 16th, 24th and 25th of October. The coolest nights on average were just 0.9 C recorded at Mount Hotham during spring.

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Extremes in spring 2010
Hottest day 37.5 C at Mildura Airport on 12 Nov
Warmest days on average 22.6 C at Mildura Airport
22.6 C at Ouyen (Post Office)
Coolest days on average 6.9 C at Mount Hotham
Coldest day -2.6 C at Mount Hotham on 16 Sep
Coldest night -7.6 C at Mount Hotham on 8 Sep
-7.6 C at Mount Hotham on 16 Oct
Coolest nights on average 0.9 C at Mount Hotham
Warmest nights on average 11.7 C at Gabo Island Lighthouse
Warmest night 24.0 C at Mildura Airport on 12 Nov
Wettest overall 797.6 mm at Mount Hotham
Wettest day 135.2 mm at Whitlands (Burder's Lane) on 5 Sep
Highest wind gust 139 km/h at Falls Creek on 4 Sep
139 km/h at Mount Hotham on 30 Oct
139 km/h at Mount Hotham on 31 Oct

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 total spring rainfall
Total rainfall
for spring 2010 (mm)
Previous highest
for spring
Years of
record
Average for
spring
Maryborough 377.2 356.6 in 1975 133 141.8
Dunolly 402.8 361.2 in 1975 128 133.4
Narraport 276.4 255.7 in 1887 125 101.4
Inglewood (Post Office) 359.2 324.4 in 1973 124 121.7
Canary Island 261.2 243.3 in 1973 122 99.5
Boort 269.0 235.6 in 1889 112 111.0
Natte Yallock 333.4 294.6 in 1975 111 126.0
Ultima (Post Office) 255.7 242.4 in 1992 99 99.4
Redesdale 410.2 339.4 in 1906 97 149.9
Korong Vale (Burnbank) 302.2 267.8 in 1992 68 119.4
Lalbert 259.0 252.4 in 1992 65 103.6
Mildura Airport 253.8 222.8 in 1958 65 84.2
Bonbeach (Carrum) 353.2 349.7 in 1992 49 203.5
Castlemaine Prison 413.8 367.4 in 1975 45 170.9
Eppalock Reservoir 328.4 315.6 in 1992 45 140.8
Kyneton 431.4 424.9 in 1975 41 213.0
Melbourne Airport 303.6 303.0 in 1992 40 165.3
Strath Creek 369.2 356.8 in 1992 28 192.5
Beechworth Woolshed 419.2 412.2 in 1992 23 215.4

Highest total spring rainfall for at least 20 years
Total rainfall
for spring 2010 (mm)
Most recent spring
this high or higher
Years since
higher
Average for
spring
Heathcote 366.2 382.8 in 1949 61 149.9
Epping 351.4 356.3 in 1949 52 186.9
Annuello 197.2 234.8 in 1964 45 86.1
Yackandandah 455.3 462.5 in 1966 40 242.7
Essendon Airport 282.2 330.2 in 1954 38 170.7
Cairn Curran Reservoir 268.6 326.4 in 1975 35 143.3
Laverton RAAF 277.0 314.6 in 1975 35 159.4
Raywood 283.6 320.8 in 1975 35 114.1
Beaufort 338.8 361.8 in 1975 34 193.0
Clunes 300.6 305.6 in 1975 34 157.9
Daylesford 422.2 474.0 in 1975 34 229.3
Sea Lake (Post Office) 212.0 225.0 in 1975 34 91.1
Wedderburn (Post Office) 323.7 339.8 in 1975 34 125.9
St Arnaud 348.8 408.7 in 1975 33 134.6
Whitlands (Burder's Lane) 667.2 732.6 in 1975 33 363.0
Lancefield 388.2 411.8 in 1975 31 196.2
Red Cliffs (Post Office) 186.4 189.7 in 1975 31 82.7
Werrimull 173.5 196.0 in 1975 28 77.2
Avalon Airport 275.8 283.2 in 1975 25 144.9
Moorabbin Airport 334.0 370.4 in 1983 25 199.2



Summary statistics for spring 2010
Maximum temperatures
for spring
(C)
Minimum temperatures
for spring
(C)
Rainfall
for spring
(millimetres)
Mean for
spring
2010
Diff
from
average
Highest for
spring
2010
Mean for
spring
2010
Diff
from
average
Lowest for
spring
2010
Total for
spring
2010
Average
for
spring
Rank of
spring
2010
Fraction of
spring
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 20.8 -1.0 31.3 12 Nov 9.4 +1.1 -0.1 30 Sep 347.8 177.2 v high 196%
Hume Reservoir 20.7 -0.4 31.3 12 Nov 10.2 +1.1 0.9 30 Sep 386.6 184.3 v high 210%
North Mallee (district 76)
Mildura Airport 22.6 -1.3 37.5 12 Nov 10.1 +0.2 1.6 30 Sep 253.8 84.2 highest 301%
Ouyen (Post Office) 22.6 -1.1 35.7 11 Nov 9.6 +0.6 1.9 29 Sep 181.4 95.8 v high 189%
Walpeup Research 22.4 -0.7 36.0 12 Nov 9.2 +0.2 0.8 29 Sep 173.4 94.3 v high 184%
South Mallee (district 77)
Hopetoun Airport 22.1   36.8 11 Nov 7.6   -1.5 24 Sep 132.8
Swan Hill Aerodrome 22.3 -1.7 37.0 12 Nov 8.4 -0.1 0.4 24 Sep 206.2 102.5 v high 201%
North Wimmera (district 78)
Nhill Aerodrome 20.8   34.9 22 Nov 7.8   0.0 30 Sep 136.2
Warracknabeal Museum 21.0 -0.8 34.2 22 Nov 8.0 +0.2 0.2 30 Sep 141.9 114.6 high 124%
South Wimmera (district 79)
Edenhope Airport 19.1   34.3 22 Nov 8.1   0.8 7 Sep 150.8
Grampians (Mount William) 10.7   25.6 22 Nov 3.4   -3.3 16 Oct 357.0
Horsham Aerodrome 20.1 -1.8 33.8 22 Nov 6.7 +0.6 -1.5 30 Sep 159.6 107.1 high 149%
Horsham Polkemmet Rd 20.5 -0.6 34.0 22 Nov 6.9 -0.5 0.5 29 Sep 152.2 123.8 high 123%
Kanagulk 18.9   34.0 22 Nov 7.3   0.4 30 Sep 142.2
Longerenong 20.3 -0.6 34.6 22 Nov 6.9 0.0 -1.7 30 Sep 139.4 113.2 high 123%
Pyrenees (Ben Nevis) 13.1   26.9 22 Nov 4.9   -2.6 16 Oct 327.8
Stawell Aerodrome 18.8 -1.3 32.3 22 Nov 7.9 +0.3 0.9 30 Sep 227.0 142.2 v high 160%
Lower North (district 80)
Charlton 20.9   34.8 11 Nov 7.9   0.1 30 Sep 266.0
Echuca Aerodrome 21.2 -0.9 36.1 12 Nov 8.3 -0.4 0.2 30 Sep 217.6 114.2 v high 191%
Kerang 21.9 -1.0 36.4 11 Nov 9.3 +0.4 1.9 29 Sep 230.8 103.6 v high 223%
Kyabram DPI 21.1 -0.1 35.8 12 Nov 7.9 +0.3 -1.5 30 Sep 144.4 121.9 average 118%
Upper North (district 81)
Bendigo Airport 19.7 -0.7 31.8 11 Nov 7.5 +0.8 -2.1 30 Sep 349.0 147.7 v high 236%
Shepparton Airport 20.6 -1.4 34.6 12 Nov 8.4 +0.8 -0.4 30 Sep 228.6 131.1 v high 174%
Tatura Inst Sustainable Ag 20.5 -0.5 34.7 12 Nov 8.0 +0.3 -1.8 30 Sep 190.7 132.5 high 144%
Yarrawonga 21.5 -1.0 34.8 12 Nov 8.1 +0.4 -0.1 30 Sep 225.6 126.3 v high 179%
Lower Northeast (district 82)
Benalla Airport 20.6   32.0 12 Nov 7.9   -1.2 30 Sep 263.6
Corryong Airport 20.8   30.9 12 Nov 7.3   -1.9 30 Sep 462.8
Dartmouth Reservoir 19.8 -0.4 30.4 12 Nov 8.0 +1.1 -1.3 30 Sep 468.8 276.3 v high 170%
Hunters Hill 15.6 -0.2 25.9 12 Nov 7.4 +0.3 -1.1 16 Oct 547.8 315.0 high 174%
Rutherglen Research 20.5 -0.6 31.7 12 Nov 7.6 +1.2 -1.9 30 Sep 324.2 158.9 v high 204%
Strathbogie 17.1 -0.7 27.9 12 Nov 6.2 +0.7 -2.1 30 Sep 420.8 247.0 v high 170%
Wangaratta Aero 20.7 -0.7 32.3 12 Nov 7.7 +0.9 -0.9 30 Sep 240.0 164.5 high 146%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 13.9 -0.5 23.7 12 Nov 2.8 -0.1 -6.1 8 Sep 304.8 248.5 high 123%
Falls Creek 8.3 -0.4 18.2 22 Nov 1.8 +0.3 -7.2 30 Sep 641.4 376.0 high 171%
Mount Buller 7.4 -1.1 17.4 12 Nov 1.4 -0.3 -6.9 16 Oct 625.0 445.1 high 140%
Mount Hotham 6.9 -0.3 16.9 12 Nov 0.9 0.0 -7.6 8 Sep 797.6 395.0 v high 202%
Omeo 17.6   27.9 12 Nov 5.3   -2.7 17 Sep 239.4
East Gippsland (district 84)
Combienbar AWS 18.3 +0.1 31.9 12 Nov 8.2 +0.2 1.0 16 Oct 214.4 275.4 low 78%
Gabo Island Lighthouse 17.4 +0.3 24.5 12 Nov 11.7 +0.5 6.0 29 Sep 150.4 220.8 low 68%
Gelantipy 16.2 -0.1 26.9 12 Nov 6.5 +0.5 -0.6 3 Sep 239.2 225.6 average 106%
Lakes Entrance (Eastern Beach Road) 19.0   34.2 12 Nov 9.6   2.6 3 Sep 230.6
Mallacoota 18.9 0.0 33.2 12 Nov 10.4 +0.5 3.5 20 Oct 159.0 247.1 low 64%
Mount Nowa Nowa 18.7 -0.2 33.3 12 Nov 9.3 +0.1 2.5 16 Oct 215.8 216.2 average 100%
Orbost 19.7   34.0 12 Nov 9.4   1.6 8 Sep 174.0 199.4 average 87%
Orbost (Comparison) 20.2 +0.5 34.4 12 Nov 8.4 +0.2 0.1 8 Sep 179.4 220.3 average 81%
Point Hicks (Lighthouse) 19.0 +0.6 32.5 12 Nov 11.3 +0.3 4.4 30 Sep 201.4 232.4 average 87%
West Gippsland (district 85)
Bairnsdale Airport 19.8 +0.2 33.7 12 Nov 7.9 +0.4 -0.2 8 Sep 174.8 195.9 average 89%
East Sale Airport 19.7 +0.6 35.7 12 Nov 7.8 +0.3 -0.8 3 Sep 127.0 172.4 low 74%
Morwell (Latrobe Valley Airport) 19.1 -0.3 34.3 23 Nov 7.5 0.0 0.5 3 Sep 232.2 226.1 average 103%
Mount Baw Baw 7.6 -1.3 19.8 22 Nov 1.5 -0.4 -6.4 16 Oct 495.2
Mount Moornapa 18.4 -0.1 32.5 12 Nov 8.4 +0.2 1.2 16 Oct 256.8 247.8 average 104%
Noojee (Slivar) 17.5 -0.4 30.5 22 Nov 7.4 +0.7 0.2 3 Sep 409.4 343.7 high 119%
Pound Creek 17.8   31.1 12 Nov 8.6   0.6 3 Sep 243.6
Wilsons Promontory Lighthouse 15.7 0.0 30.2 23 Nov 10.9 +0.9 5.5 29 Sep 277.6 262.5 average 106%
Yarram Airport 18.7   35.4 12 Nov 7.1   -0.3 3 Sep 184.8
East Central (district 86)
Bundoora (Latrobe University) 19.4 -0.2 32.2 22 Nov 9.2 +0.4 2.0 30 Sep 269.1 193.4 high 139%
Cerberus 17.9 -0.4 31.4 12 Nov 9.2 +0.3 1.7 2 Oct 255.6 188.2 v high 136%
Coldstream 19.3 -0.4 30.9 22 Nov 7.6 +0.8 0.3 3 Sep 313.0 208.8 high 150%
Coldstream Comparison 19.2   30.9 22 Nov 7.4   0.2 3 Sep 312.4
Essendon Airport 19.0 -0.1 31.4 22 Nov 9.1 +1.0 1.5 8 Sep 282.2 170.7 v high 165%
Ferny Creek (Dunns Hill) 14.7 -0.6 27.3 22 Nov 7.3 -0.1 0.5 16 Oct 428.8 292.5 high 147%
Frankston AWS 17.4 -0.3 33.2 22 Nov 10.9 +0.3 5.7 8 Sep
Melbourne Airport 18.8 -0.4 31.6 22 Nov 8.7 +0.1 1.9 14 Sep 303.6 165.3 highest 184%
Melbourne Regional Office 20.1 +0.5 33.3 22 Nov 11.1 +1.6 4.7 16 Oct 304.8 184.5 v high 165%
Moorabbin Airport 18.8 -0.3 32.5 12 Nov 9.9 +0.6 2.2 8 Sep 334.0 199.2 v high 168%
Rhyll 17.6 -0.2 28.5 12 Nov 11.0 +0.4 4.5 16 Oct 255.8 186.9 high 137%
Scoresby Research Institute 19.0 +0.1 31.5 22 Nov 9.0 +0.1 1.0 8 Sep 324.0 251.6 high 129%
Viewbank (ARPANSA) 19.6 -0.9 32.2 22 Nov 9.3 0.0 2.5 14 Sep 311.6 196.6 v high 158%
Wallan (Kilmore Gap) 15.1 -1.0 27.1 22 Nov 7.0 0.0 0.1 16 Oct 391.2 178.9 v high 219%
Wonthaggi 18.2 +0.2 32.0 12 Nov 9.4 +0.5 3.4 3 Sep 300.8 246.3 high 122%
West Central (district 87)
Avalon Airport 19.0 -0.9 32.2 12 Nov 8.3 0.0 0.3 2 Oct 275.8 144.9 v high 190%
Grovedale (Geelong Airport) 18.0 -0.7 31.9 23 Nov 8.1 +0.2 1.8 8 Sep 227.4 154.8 v high 147%
Laverton RAAF 18.9 -0.3 31.5 22 Nov 9.0 +0.7 1.3 8 Sep 277.0 159.4 v high 174%
Sheoaks 17.3 -0.7 31.8 22 Nov 7.4 0.0 0.5 2 Oct 283.2 171.4 v high 165%
North Central (district 88)
Castlemaine Prison 18.2 -0.9 30.3 11 Nov 7.5 +0.7 -2.0 30 Sep 413.8 170.9 highest 242%
Eildon Fire Tower 16.2 -0.8 28.1 22 Nov 7.5 0.0 -0.9 16 Oct 461.6 180.7 v high 255%
Lake Eildon 20.0 +0.1 31.5 22 Nov 8.1 +0.8 0.8 3 Sep 419.8 228.7 v high 184%
Mangalore Airport 20.0 -0.5 31.7 22 Nov 7.9 +0.5 -1.2 29 Sep 312.2 153.4 v high 204%
Maryborough 19.1 -1.0 31.7 23 Nov 7.5 +0.2 0.4 30 Sep 377.2 141.8 highest 266%
Redesdale 18.8 -0.7 30.6 22 Nov 6.5 +0.5 -1.5 30 Sep 410.2 149.9 highest 274%
Western Plains (district 89)
Ararat Prison 18.0 -0.1 31.8 22 Nov 7.0 +0.8 -1.1 30 Sep 242.1 166.9 high 145%
Ballarat Aerodrome 16.2 -0.5 27.9 22 Nov 6.6 +0.4 -0.3 30 Sep 301.2 195.7 v high 154%
Westmere 17.3   31.8 22 Nov 6.8   0.5 2 Oct 223.0
West Coast (district 90)
Aireys Inlet 17.1 -0.7 32.3 23 Nov 9.4 0.0 3.3 16 Oct 244.8 184.4 high 133%
Cape Nelson Lighthouse 16.7 -0.4 32.7 23 Nov 10.3 -0.3 3.0 7 Sep 155.2 172.6 low 90%
Cape Otway Lighthouse 15.9 -0.9 32.0 23 Nov 10.0 +0.4 5.0 16 Oct
Casterton 18.2   33.0 23 Nov 7.5   0.2 7 Sep 170.8
Casterton Showgrounds 18.7 -0.4 33.4 22 Nov 7.6 +0.1 -0.5 7 Sep 196.6 179.8 average 109%
Colac (Mount Gellibrand) 15.9 -1.3 29.6 23 Nov 7.5 -0.2 1.4 16 Oct 227.6 153.1 v high 149%
Dartmoor 18.1   35.5 23 Nov 7.8   0.0 7 Sep 193.6
Hamilton Airport 17.4 -0.5 32.4 22 Nov 6.9 +0.1 -0.2 14 Sep 182.8 177.0 average 103%
Mortlake Racecourse 17.4 -0.6 31.8 22 Nov 7.2 +0.7 0.6 14 Sep 200.6 162.9 high 123%
Port Fairy AWS 17.6 -0.5 34.8 23 Nov 9.8 +0.3 3.2 25 Oct 192.2 168.8 high 114%
Portland (Cashmore Airport) 16.4 -0.4 31.2 23 Nov 8.5 0.0 2.0 19 Oct 219.6 202.2 average 109%
Warrnambool Airport NDB 17.2 -0.9 31.6 23 Nov 7.9 +0.3 1.1 25 Oct 249.2 194.0 high 128%
Weeaproinah 13.4 -0.4 27.6 23 Nov 6.6 -0.2 0.8 16 Oct 537.4 513.2 average 105%

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 11 am on Wednesday 1 December 2010. 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