Friday, 1 November 2013 - Monthly Climate Summary for Tasmania - Product code IDCKGC17R0
Persistent and strong westerly winds controlled Tasmania's weather during October 2013, bringing above-normal rain to the west, cool days, mild nights and wind damage.
Continuing the pattern seen over the last several months, persistent westerly winds frequently brought rain, with cold fronts embedded in those westerlies ensuring there was well-above normal rain in the western half of Tasmania during October. Mount Read recorded 618 mm for the month, whilst Strathgordon Village had 548 mm. Several sites in the west had their wettest October for several decades. There were also some very wet days scattered through the month, with a few sites registering their highest October daily rainfall on record.
Rain was close to normal along the north coast and in the east, with several sites on the East Coast recording less than 40 mm for the month.
Cool days were more common than warm ones during October, but there were a few warm days. Warm weather on the 5th, 16th, 18th to 20th and 28th was swamped by marked cold spells near the start of the month, around the 14th, and from the 21st to the 26th. For most places, mean daily maximum temperatures were below average for October, typically by about half a degree. Only in the east and southeast were days a little warmer than usual.
The hottest weather was on the 20th, when several sites in the east reached into the high 20s and Friendly Beaches recorded 30.7 °C. Several times during the month elevated sites struggled to reach 10 °C, and on the 17th Mount Wellington reached only 0.8 °C.
Despite the many cool days, overnight temperatures were mostly above average in Tasmania during October, typically by about half a degree, although some patches in the south had a cool month. There were several mild mornings, notably on the 5th, around the 10th and around the 20th.
On the morning of the 20th, Friendly Beaches did not drop below 16.6 °C, Strahan Aerodrome remained above 15.9 °C, and Cape Grim reported its warmest October daily minimum temperature. At the other extreme, Mount Wellington dropped to -5.6 °C on the 14th and Liawenee hit -4.3 °C on the 7th.
Spring often brings windy weather to Tasmania, but October 2013 was especially windy. Many times through the month there were trees brought down, power outages or other damage due to wind. The 2nd saw gusts over 100 km/h at sites across the state, with a peak of 143 km/h at Hogan Island (in northern Bass Strait) and Spring Bay on the East Coast and 127 km/h at Cape Grim.
There were more windy days than usual. For example Hobart had 10 days with a gust over 80 km/h (compared to an average of about 3 days each October), Strahan had 6 days with a gust over 80 km/h (October average less than 2 days), and Wynyard had 8 days with a gust over 70 km/h (October average about 2 days). Even when not gusty the wind was persistent: it was above 30 km/h about 25% of the time in Hobart (compared to an October average of about 10%), with similar stories elsewhere.
Strong westerly winds were perhaps the main feature of Hobart's weather in October 2013. The strongest gust was 102 km/h on the 5th, and there were 10 days with a gust over 80 km/h, the greatest number of such gusty days in any month since the current anemometer was installed in 1994. Southeasterly winds, often indicating a sea-breeze in Hobart, occurred less than half as frequently as usual for October, whilst winds over 30 km/h were more than twice as frequent as usual for October.
Although Hobart had some cool days, the mean daily maximum of 17.7 °C was 0.7 °C above the long-term average for October. There were 9 days over 20 °C (the same amount as in the very mild September), with the highest 26.7 °C on the 19th. The coldest day was on the 24th with 12.9 °C; the long-term average is to have two days in October below 12 °C in Hobart.
There were cold nights through the month in Hobart, with the coldest 3.3 °C on the morning of the 7th. But there were also plenty of mild nights: on 9 occasions it didn't drop below 10 °C, and although it went below 5 °C twice this is less than the historical average of 5 such cold nights. The mean daily minimum temperature of 8.5 °C was 0.7 °C above the long-term average.
Hobart's 106.6 mm of rain for the month was above the long-term average of 62 mm, and much more than the 40 mm recorded in September, or the 29 mm from October 2012. It was Hobart's wettest October since 2001, and its wettest month since April 2011 (although not much wetter than the 101 mm in July this year).
|Extremes in October 2013|
|Hottest day||30.7 °C at Friendly Beaches on the 20th|
|Warmest days on average||19.1 °C at Friendly Beaches|
|Coolest days on average||5.9 °C at Mount Read|
|Coldest day||0.8 °C at Mount Wellington on the 17th|
|Coldest night||-5.6 °C at Mount Wellington on the 14th|
|Coolest nights on average||-0.9 °C at Mount Wellington|
|Warmest nights on average||10.3 °C at Flinders Island Airport|
|Warmest night||16.6 °C at Friendly Beaches on the 20th|
|Warmest on average overall||13.9 °C at Friendly Beaches|
|Coolest on average overall||3.0 °C at Mount Wellington|
618.4 mm at Mount Read|
34.8 mm at Maria Island (Point Lesueur)|
108.2 mm at Mount Victoria (Una Plain) on the 1st|
|Highest wind gust||
143 km/h at Spring Bay NTC AWS and Hogan Island on on the 2nd|
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|Record highest October daily rainfall|
Highest daily rainfall
in October 2013 (mm)
|Naracoopa||64.6||on the 23rd||53.8||on the 30th in 1969||96|
|Tea Tree (The Point)||36.4||on the 1st||32.2||on the 23rd in 1986||28|
|Campbell Town (Elizabeth R)||44.2||on the 1st||39.9||on the 7th in 1968||27|
|Lake St Clair National Park||66.8||on the 17th||50.0||on the 16th in 2007||25|
|Record highest total October rainfall|
for October 2013 (mm)
|Lake St Clair National Park||428.8||304.4||in 2007||25||183.5|
|Maydena Post Office||240.5||175.5||in 2001||22||121.8|
|Highest total October rainfall for at least 20 years|
for October 2013 (mm)
Most recent October
at least this wet
|Bronte Heights||171.0||175.0||in 1928*||67||90.1|
|Ringarooma (Charles Street)||159.4||195.4||in 1986*||26||108.7|
|Geeveston (Cemetery Road)||176.4||296.6||in 1988||25||92.8|
|Strathgordon Village||547.8||721.5||in 1988||25||251.8|
|Zeehan (West Coast Pioneers Museum)||334.4||554.8||in 1988*||24||211.7|
|Waratah (Mount Road)||267.6||282.0||in 1971*||23||198.7|
|Maatsuyker Island Lighthouse||136.0||150.0||in 1993||20||105.9|
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.
|Record highest October daily minimum temperature|
Highest daily minimum
in October 2013 (°C)
|Cape Grim BAPS (Comparison)||15.1||on the 20th||14.3||on the 12th in 2006||21||9.2|
|Summary statistics for October 2013|
|Northern (district 91)|
|Bridport (Sea View Villas)||16.0||-0.4||22.8||20th||7.8||-0.1||1.5||14th||72.0||58.6||average||123%|
|Burnie (Round Hill)||16.6||+0.7||21.6||19th||8.4||+0.4||3.3||14th||86.8||84.8||average||102%|
|Burnie NTC AWS||15.1||19.9||20th||9.2||5.6||14th|
|Cape Grim BAPS (Comparison)||14.6||+0.3||20.7||20th||9.4||+0.2||6.0||14th||72.2||61.5||average||117%|
|Cressy Research Station||16.6||-0.5||22.5||20th||6.6||+1.6||2.1||29th||71.0||48.9||high||145%|
|Launceston (Ti Tree Bend)||17.5||-0.5||23.0||20th||7.9||+1.0||2.6||14th||93.4||51.2||v high||182%|
|Scottsdale (West Minstone Road)||15.7||-0.7||22.3||20th||5.9||+0.1||-0.6||14th||104.6||82.5||high||127%|
|Sheffield School Farm||14.5||-0.6||20.3||19th||6.2||+0.5||1.5||14th||118.6||80.9||high||147%|
|East Coast (district 92)|
|Bicheno (Council Depot)||18.4||+1.0||28.6||20th||8.8||+0.3||3.3||18th||35.2||55.2||average||64%|
|Fingal (Legge Street)||17.1||-0.3||27.3||20th||5.3||+0.5||-0.6||27th||47.4||54.1||average||88%|
|Lake Leake (Elizabeth River)||13.2||-0.5||21.9||20th||3.6||+0.1||-0.9||14th||95.2||75.2||high||127%|
|Larapuna (Eddystone Point)||17.2||+0.8||25.7||20th||9.1||0.0||2.9||14th||68.2||68.9||average||99%|
|Maria Island (Point Lesueur)||16.7||24.4||20th||9.1||4.1||14th||34.8||34.0||average||102%|
|Orford (Aubin Court)||17.8||+0.5||27.6||20th||7.1||-0.1||2.4||14th||42.6||59.4||average||72%|
|Spring Bay NTC AWS||16.4||25.4||20th||9.4||5.7||7th|
|St Helens Aerodrome||17.5||+0.2||26.1||20th||8.1||+0.3||2.3||14th||67.6||65.8||high||103%|
|Swansea (Francis Street)||18.4||28.8||20th||7.9||1.9||14th||44.1|
|Midlands (district 93)|
|Ross (The Boulevards)||16.2||-0.8||23.1||20th||5.8||+1.0||0.4||28th||61.6||42.6||high||145%|
|Southeast (district 94)|
|Campania (Kincora)||17.7||-0.1||26.1||19th||7.4||+1.0||0.6||7th||74.0||42.2||v high||175%|
|Cape Bruny (Cape Bruny)||15.3||+0.1||24.5||19th||7.6||-0.6||3.0||14th||111.6||69.3||high||161%|
|Cape Bruny Lighthouse||14.9||+0.5||24.2||19th||7.6||-0.3||3.2||26th||121.8||83.6||high||146%|
|Dunalley (Stroud Point)||17.2||26.0||19th||8.8||4.3||14th||57.2|
|Geeveston (Cemetery Road)||16.1||-0.3||25.4||19th||6.4||+0.4||-0.1||7th||176.4||92.8||v high||190%|
|Grove (Research Station)||16.4||25.5||19th||6.4||-1.2||7th||115.8||64.1||v high||181%|
|Hobart (Ellerslie Road)||17.7||+0.7||26.7||19th||8.5||+0.7||3.3||7th||106.6||61.8||high||172%|
|Maatsuyker Island Lighthouse||12.4||-0.9||16.9||9th||7.4||-0.1||3.3||14th||136.0||105.9||high||128%|
|Melton Mowbray (North Stockman)||16.3||-0.3||28.4||20th||5.8||+0.3||-0.2||7th||66.8||42.8||high||156%|
|Tasman Island||14.5||+1.1||23.1||19th||7.1||-0.4||1.9||14th||112.0||66.1||v high||169%|
|Tunnack Fire Station||14.4||0.0||22.7||19th||4.3||0.0||-4.0||7th||58.4||54.4||high||107%|
|Derwent Valley (district 95)|
|Bushy Park (Bushy Park Estates)||17.5||-0.2||26.3||19th||6.2||+0.4||-0.3||7th||71.4||57.2||high||125%|
|Maydena Post Office||14.5||-1.1||24.2||19th||4.1||-0.6||-0.9||7th||240.5||121.8||highest||197%|
|Ouse Fire Station||17.0||-0.7||27.2||20th||6.0||+0.8||-0.8||7th||120.4||55.5||v high||217%|
|Central Plateau (district 96)|
|Butlers Gorge||11.4||-1.1||21.1||20th||2.8||+0.4||-3.9||7th||337.0||161.5||v high||209%|
|Lake St Clair National Park||11.7||-1.0||20.8||19th||2.3||+0.3||-4.1||7th||428.8||183.5||highest||234%|
|West Coast (district 97)|
|Hartz Mountain (Keoghs Pimple)||9.1||-1.7||18.2||19th||1.6||-1.0||-2.9||14th|
|Low Rocky Point||14.1||19.0||19th||8.4||4.7||7th||139.4||112.0||high||124%|
|Mount Read||5.9||-1.7||15.7||19th||0.3||-1.0||-3.4||14th||618.4||393.6||v high||157%|
|Scotts Peak Dam||13.0||-1.4||21.3||19th||4.7||-0.3||0.6||14th||356.2||176.9||v high||201%|
|Strathgordon Village||12.0||-1.6||21.0||20th||4.9||-0.5||0.5||14th||547.8||251.8||v high||218%|
|King Island (district 98)|
|King Island Airport||16.0||+0.3||23.7||19th||9.5||+0.7||5.2||3rd||92.6||74.3||average||125%|
|Flinders Island (district 99)|
|Flinders Island Airport||17.1||+0.4||28.7||20th||10.3||+1.8||2.6||28th||70.6||59.8||average||118%|
|Antarctica and Macquarie Island (district 300)|
|Macquarie Island||5.9||+0.1||7.4||3rd||1.8||-0.2||-1.9||27th||121.2||76.6||v high||158%|
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 Friday 1 November 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 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
(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.