Tasmania in November 2013: heavy rain and cool days

With three low pressure systems close to the state at different times during November, heavy rain and cool, cloudy days were recurrent features in Tasmania, especially in the east.

  • Three heavy rain events
  • Wet in the east, but relatively dry in the west
  • Many cool days
  • Less westerlies than recent months, but more easterlies

A summary has also been prepared covering all of spring 2013. The 2013 Annual Climate Summary for Tasmania will be published on Friday 3 January 2014.

Three heavy rain events

Tasmania was affected by low pressure systems close to the state an unusual three times during November, with heavy rain the result each time. A low moved southwards to the east of the state on the 8th and 9th, bringing rain across the state and totals over 50 mm in some areas. On the 12th and 13th, a low that had moved down the NSW coast low brought very high totals to the upper East Coast, with Gray (Haven of Hope) recording 258.0 mm in the 24 hours to 9 am on the 13th (the 2nd-wettest November day ever recorded in Tasmania). From the 21st to the 24th the state was influenced by a complex low near the state which again saw totals over 50 mm in the east (and over 100 mm in some places). A few sites set new November daily rainfall records during one or other of these events.

With the rain mostly coming when the wind was from the east, the west coast and highlands had a relatively dry November. This was quite unlike the wet weather experienced from July to October, where persistent westerly winds and cold fronts brought rain especially to the west and northwest. The area around Bridport was also a little drier than usual, as it missed out on the big falls from the three lows. Nonetheless, some sites in the east and north had their highest total November rainfall on record or their highest for many years.

Many cool days

With frequent east to southeast winds, cool days were dominant in Tasmania through November, especially in the southeast. Orford had 9 days below 15 °C, triple the normal number of such cool days in November, whilst Tunnack had 5 days below 10 °C. Mean maximum temperatures were below average across the state, typically by about one degree but by over two degrees at some sites in the southeast. A handful of sites had their lowest mean daily maximum for many years.

The 8th brought particularly cold weather, with Launceston, Wynyard, Devonport and Ross having their coldest November day on record. Launceston Airport reached just 9.7 °C on the 8th, the first November day below 10 °C at either the present or previous site (where observations go back to 1939). There was some warm weather, with the hottest day on the 6th when Hobart (Ellerslie Road) reached 29.5 °C and several sites reached into the mid-20s.

A mixed result for minima

The cloudy, rainy weather prevented nights from getting too cold for most of the month, but there were also few especially warm nights. Several cold mornings in the first half of the month (the coldest was at Liawenee with -4.4 °C on the 5th) were balanced by warm nights toward the end. Overall, mean minimum temperatures were mostly close to the November normal.

Hobart

Hobart, typical of places in the southeast of Tasmania, had more cool days than usual for November: there were 9 days below 15 °C (the same number as in October and well above the November average of 5 days), and on the 8th it reached only 10.6 °C. Even though it reached 29.5 °C on the 6th, Hobart's mean daily maximum of 16.9 °C was 1.8 °C below normal. Nights were more varied, and the mean daily minimum of 9.6 °C was 0.3 °C above normal.

The 94.0 mm for the month was well above the long-term November average of 54.4 mm, and much wetter than the 24.8 mm from November 2012.

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Extremes in November 2013
Hottest day 29.5 °C at Hobart (Ellerslie Road) on the 6th
Warmest days on average 19.6 °C at Launceston (Ti Tree Bend)
Coolest days on average 8.4 °C at Mount Wellington
Coldest day 0.1 °C at Mount Wellington on the 3rd
Coldest night -4.4 °C at Liawenee on the 5th
Coolest nights on average 1.6 °C at Mount Wellington
Warmest nights on average 11.0 °C at Swan Island
Warmest night 16.4 °C at Flinders Island Airport on the 28th
Warmest on average overall 14.6 °C at Swan Island
Coolest on average overall 5.0°C at Mount Wellington
Wettest overall 462.0 mm at Gray (Haven of Hope)
Driest overall 41.2 mm at New Norfolk (West)
Wettest day 258.0 mm at Gray (Haven of Hope) on the 13th
Highest wind gust 117 km/h at Hogan Island on the 3rd

Maps
ObservedAnomalyDecile 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 Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

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


Record highest November daily rainfall
Highest daily rainfall
in November 2013 (mm)
Previous wettest
for November
Years of
record
Lilydale Post Office 59.0 on the 22nd 53.3 on the 12th in 1949 107
Launceston (Ti Tree Bend) 43.8 on the 21st 40.0 on the 2nd in 1993 34
Mount Seymour 45.4 on the 14th 22.8 on the 3rd in 2005 21
Ross (The Boulevards) 38.8 on the 9th 35.0 on the 21st in 1994 21
Strathbridge (Meander River) 44.4 on the 9th 36.6 on the 3rd in 2005 20



Record highest total November rainfall
Total rainfall
for November 2013 (mm)
Previous wettest
for November
Years of
record
Average for
November
Larapuna (Eddystone Point) 170.8 156.5 in 1952 104 61.4
Bicheno (Council Depot) 252.8 157.6 in 1934 89 60.7
Lewis Hill (St Pauls River) 193.8 131.1 in 1929 85 53.3
Tooms Lake (Tooms River) 160.6 105.0 in 2001 46 52.6
Launceston (Ti Tree Bend) 136.8 121.2 in 2011 34 54.4
Nugent (Twilight Valley) 199.6 157.2 in 2001 30 74.5
Tea Tree (The Point) 127.2 125.0 in 2010 28 53.3
Ross (The Boulevards) 109.4 106.0 in 2001 21 51.4

Highest total November rainfall for at least 20 years
Total rainfall
for November 2013 (mm)
Most recent November
at least this wet
Years since
wetter
Average for
November
Avoca (Railway House) 149.2 314.8 in 1904* 101 46.0
Lilydale Post Office 152.2 158.3 in 1924* 85 63.8
Lady Barron (Franklin Parade) 151.0 171.8 in 1929* 61 54.9
Orford (Aubin Court) 177.9 194.6 in 1969 44 66.8
Bothwell (Cluny) 132.4 140.2 in 1975 38 52.0
Fingal (Legge Street) 109.0 148.8 in 1975 38 45.3
Rotherwood 152.0 182.9 in 1975 38 61.1
Lake Leake (Elizabeth River) 145.7 255.2 in 1975* 37 64.4
Levendale 154.0 170.4 in 1976 37 68.5
York Plains (Handroyd) 126.8 134.6 in 1975* 37 52.9
City of Melbourne Bay 162.8 174.0 in 1977 36 70.8
St Marys (Cullenswood) 167.4 200.4 in 1975* 35 59.5
King Island Airport 98.6 101.2 in 1985 28 57.6
Premaydena Hatchery 106.4 112.2 in 1993 20 60.7

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.




Record lowest November daily maximum temperature
Lowest daily maximum
temperature
in November 2013 (°C)
Previous coolest
for November
Years of
record
Average for
November
Launceston Airport * 9.7 on the 8th 10.6 on the 17th in 1996 * 75 * 20.4 *
Launceston (Ti Tree Bend) 10.9 on the 8th 13.2 on the 18th in 2001 31 20.5
Wynyard Airport 11.9 on the 8th 12.0 on the 17th in 1996 27 18.0
Devonport Airport 10.5 on the 8th 11.4 on the 17th in 1996 22 17.8
Ross (The Boulevards) 9.6 on the 8th 10.3 on the 18th in 2001 21 20.0

* Launceston Airport was the coldest at either the current site (which has been running for 10 years) or the previous site (which opened in 1939). The average shown is for the current site only.
Devonport, Cressy and St Helens were also the lowest from either current or previous sites.




Record lowest November mean daily maximum temperature
Mean daily maximum
temperature
for November 2013 (°C)
Previous coolest
for November
Years of
record
Average for
November
Bull Bay (Lauriston) 15.6 16.3 in 2001 22 17.9

Lowest November mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for November 2013 (°C)
Most recent November
at least this cool
Years since
cooler
Average for
November
Hobart Airport 17.0 16.9 in 1976 37 19.0
Bicheno (Council Depot) 16.8 16.6 in 1985 28 18.4



Summary statistics for November 2013
Maximum temperatures
for November
(°C)
Minimum temperatures
for November
(°C)
Rainfall
for November
(millimetres)
Mean for
November
2013
Diff
from
average
Highest for
November
2013
Mean for
November
2013
Diff
from
average
Lowest for
November
2013
Total for
November
2013
Average
for
November
Rank of
November
2013
Fraction of
November
average
Northern (district 91)
Bridport (Sea View Villas) 17.6 -0.8 21.4 14th 9.1 -0.8 4.3 4th 43.4 52.4 average 83%
Burnie (Round Hill) 18.0 +0.2 23.2 28th 10.2 +0.5 4.9 4th 100.6 69.2 high 145%
Burnie NTC AWS 16.4   22.0 19th 10.8   6.8 4th
Cape Grim 15.0   18.5 19th 10.2   7.2 12th 114.2
Cape Grim BAPS (Comparison) 15.5 -0.5 19.4 19th 10.2 -0.4 7.3 4th 109.0 55.9 high 195%
Cressy Research Station 18.1 -2.4 24.0 19th 7.7 +0.6 -0.2 10th 142.0 58.7 v high 242%
Devonport Airport 17.5 -0.3 22.3 28th 9.2 +0.1 4.4 4th 89.2 58.6 high 152%
Launceston (Ti Tree Bend) 19.6 -0.9 25.0 19th 9.3 +0.3 3.2 10th 136.8 54.4 highest 251%
Launceston Airport 18.4   24.5 19th 7.4   2.0 10th 127.4 65.2 v high 195%
Low Head 16.9 -0.5 20.3 7th 10.3 -1.0 7.3 9th 84.2 51.1 high 165%
Marrawah 16.0 -0.7 19.8 19th 9.3 0.0 6.5 10th 90.8 70.6 high 129%
Scottsdale (West Minstone Road) 18.1 -0.7 22.9 19th 7.5 -0.3 3.5 10th 53.8 69.7 average 77%
Sheffield School Farm 16.7 -1.3 20.9 23rd 7.4 -0.2 2.4 10th 93.6 93.5 average 100%
Smithton Aerodrome 17.7 -0.7 21.4 19th 8.4 -0.3 2.6 10th 135.4 61.2 v high 221%
Wynyard Airport 18.0 0.0 22.8 1st 8.6 +0.5 2.8 5th 118.8 76.5 v high 155%
East Coast (district 92)
Bicheno (Council Depot) 16.8 -1.6 20.0 28th 9.9 -0.2 5.7 10th 252.8 60.7 highest 416%
Fingal (Legge Street) 18.1 -1.5 26.3 6th 6.8 -0.3 -0.2 5th 109.0 45.3 v high 241%
Friendly Beaches 17.9 -1.8 25.0 6th 9.5 -0.7 5.2 5th 258.2 72.1 v high 358%
Lake Leake (Elizabeth River) 14.6 -1.2 21.9 19th 5.4 0.0 -1.4 5th 145.7 64.4 v high 226%
Larapuna (Eddystone Point) 17.5 -0.4 22.9 28th 10.4 -0.4 4.8 4th 170.8 61.4 highest 278%
Maria Island (Point Lesueur) 15.8   23.8 6th 10.2   4.5 4th 173.6 63.4 v high 274%
Orford (Aubin Court) 17.0 -1.7 26.6 6th 9.1 0.0 4.4 10th 177.9 66.8 v high 266%
Spring Bay NTC AWS 16.1   25.0 6th 10.2   6.4 10th
St Helens Aerodrome 17.9 -1.4 25.6 19th 9.1 -1.2 4.5 10th 268.0 85.8 v high 312%
Swan Island 18.3 +0.7 24.2 22nd 11.0 -0.9 7.4 4th 105.4 72.2 high 146%
Swansea (Francis Street) 16.9   27.8 6th 8.9   2.3 5th 230.5
Midlands (district 93)
Ross (The Boulevards) 17.5 -2.5 23.6 19th 7.1 +0.3 -0.5 5th 109.4 51.4 highest 213%
Southeast (district 94)
Bull Bay (Lauriston) 15.6 -2.3 24.5 6th 8.9 -0.4 5.8 10th 86.6 53.1 v high 163%
Campania (Kincora) 17.4 -3.4 27.2 6th 8.6 0.0 1.9 5th 107.6 47.4 v high 227%
Cape Bruny (Cape Bruny) 15.3 -1.6 26.9 6th 9.0 -0.7 5.9 4th 93.8 58.0 high 162%
Cape Bruny Lighthouse 14.7 -0.9 25.9 6th 9.2 +0.1 6.3 4th 81.2 75.4 average 108%
Dennes Point 16.3   24.2 6th 9.4   6.0 4th 72.6
Dover 16.0 -1.6 26.0 6th 7.5 -0.3 2.4 16th 84.8 71.8 average 118%
Dunalley (Stroud Point) 16.1   25.0 6th 10.2   5.2 4th
Geeveston (Cemetery Road) 17.1 -1.2 28.5 6th 7.5 -0.1 2.2 16th 64.2 69.9 average 92%
Grove (Research Station) 16.9   27.8 6th 7.3   1.1 5th 82.2 62.4 high 132%
Hobart (Ellerslie Road) 16.9 -1.8 29.5 6th 9.6 +0.3 5.6 4th 94.0 54.4 v high 173%
Hobart Airport 17.0 -2.0 28.4 6th 9.7 +0.5 3.6 5th 87.4 45.0 v high 194%
Maatsuyker Island Lighthouse 13.4 -1.0 21.9 6th 8.9 +0.5 5.0 4th 74.8 91.6 average 82%
Melton Mowbray (North Stockman) 17.1 -2.7 27.9 6th 7.2 -0.2 1.2 5th 80.2 44.2 high 181%
Mount Wellington 8.4 -1.0 19.5 6th 1.6 0.0 -3.5 4th
Tasman Island 13.5 -1.9 22.4 6th 8.4 -0.5 5.1 4th 126.8 60.9 v high 208%
Tunnack Fire Station 14.8 -2.6 21.3 6th 6.1 0.0 -0.6 5th 147.4 67.3 v high 219%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 19.0 -0.9 29.4 6th 7.8 +0.3 1.4 5th 41.6 52.8 average 79%
Maydena Post Office 16.9 -1.2 27.2 6th 6.4 -0.1 2.1 17th 75.8 90.7 average 84%
Ouse Fire Station 19.0 -2.1 27.8 6th 7.4 +0.3 1.8 5th 47.8 40.8 average 117%
Central Plateau (district 96)
Butlers Gorge 14.3 -0.3 23.1 6th 3.8 -0.2 -2.6 5th 165.8 139.0 high 119%
Lake St Clair National Park 14.7 -0.9 23.1 6th 3.2 -0.4 -2.2 5th 157.2 135.1 average 116%
Liawenee 13.5 -1.8 20.6 27th 2.1 -0.7 -4.4 5th 104.0 70.1 high 148%
West Coast (district 97)
Cape Sorell 16.1 +0.6 21.2 6th 9.6 0.0 6.9 9th 56.4 88.1 low 64%
Hartz Mountain (Keoghs Pimple) 12.5 -1.4 22.4 6th 3.7 -0.6 -0.6 4th 91.2 75.3 average 121%
Low Rocky Point 16.1   22.8 6th 9.1   5.4 12th 52.8 81.5 low 65%
Mount Read 10.3 -0.6 19.1 6th 2.6 -0.6 -1.6 4th 186.2 218.4 average 85%
Scotts Peak Dam 17.0 -0.8 27.8 6th 6.4 -0.5 2.2 4th 83.0 97.3 low 85%
Strahan Aerodrome 17.8 -0.1 27.7 6th 7.8 -0.5 3.7 16th 77.0 94.9 average 81%
Strathgordon Village 15.8 -0.4 25.5 6th 6.0 -1.1 2.0 20th 104.6 175.8 low 59%
Warra 14.3   26.1 6th 4.9   0.8 20th 102.8
King Island (district 98)
King Island Airport 16.7 -0.8 26.8 6th 9.9 -0.2 3.9 5th 98.6 57.6 v high 171%
Flinders Island (district 99)
Flinders Island Airport 18.3 -0.3 28.0 7th 9.7 -0.5 3.7 5th 79.8 56.0 high 143%
Antarctica and Macquarie Island (district 300)
Macquarie Island 6.8 +0.3 9.1 26th 2.4 -0.3 -3.0 1st 59.0 72.4 average 81%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Tasmania 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 Monday 2 December 2013. 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 20 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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
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