Thursday, 1 November 2012 - Monthly Climate Summary for Tasmania - Product code IDCKGC17R0
Tasmania in October 2012: a dry month overall
Despite a few wet days, rainfall was below average in most of Tasmania in October, and especially so in the central north. There were some warm days, but also plenty of cool weather.
- Below average rainfall
- Many cold mornings
- Near-average temperatures overall
- Damaging winds on the 4th
A relatively dry month, especially in the north
Rainfall totals were below average in almost all areas, and especially so in the northern and central regions. Mount Read recorded 348 mm for the month, whilst Low Head had only 4 mm, Devonport 8 mm and Launceston only 14 mm. Maydena had its lowest total October rainfall on record, and Frankford its lowest total October rainfall for many years. Even in a relatively dry month there were a number of rain events, including almost statewide rain with cold fronts around the 10th, 16th and the 25th, and many wet days in the western half.
Springtime warmth, but many cool days too
The 30th was the warmest day of October, when northerly winds and clear skies saw temperatures reach into the mid to high twenties and Friendly Beaches reach 28.9 °C. Daytime temperatures were also warm in northwest winds in the middle of the month and around the 3rd and 4th. Following the early burst of warmth, temperatures dropped significantly in the wake of a cold front on the 6th, Scamander and Strahan recording their coldest October day on record in the wintery weather. After that, there were several cool days and many occasions when temperatures struggled to reach into the mid-teens. Overall, daytime temperatures were close to or slightly above average in most areas.
Plenty of cool nights
Cool nights were much more common than mild ones during October. There were several quite cold nights, especially in the northeast inland. Fingal dropped below -1 °C on the 6th, 8th, 11th and 23rd. An average October only sees two mornings below -1 °C in Fingal. Devonport also had some cold nights, notably between the 6th and 14th, which contributed to its lowest October mean daily minimum temperature in 20 years of record. Overall, overnight temperatures were below average in most parts of the state, typically by less than half a degree but by over a degree at some sites in the northeast.
On the 4th, an intense low pressure system passed well to the south of Tasmania and brought a strong west to northwest stream over the state. Wind gusts exceeded 130 km/h at some exposed sites (peaking at 141 km/h on Mount Wellington) and 90 to 100 km/h in urban areas. Flying debris damaged properties from Huonville to Hobart and Richmond, with several reports of roof damage, downed trees and subsequent power outages.
Hobart: dry with average temperature
Hobart's rain was well down on average in October, despite a few wet days. The total of 29 mm was less than half that recorded in October 2011.
Temperatures in Hobart were close to average overall, with some quite warm days balancing out many cool ones to give a mean daily maximum of 17.5 °C, 0.5 °C above the long-term October average. Hobart's warmest day this month was 28.6 °C on the 30th, a far cry from the 25th when it reached just 11.2 °C. There were some cold nights for the time of year (the temperature fell below 5 °C on the 6th, 7th and 8th), but there were enough mild nights to counter this and give a mean daily minimum temperature 0.4 °C above average at 8.2 °C.
Hobart was not spared the damaging winds of the 4th, recording a wind gust of 104 km/h early that afternoon.
2012 so far
Maximum temperatures have been warmer than average this year so far, by up to half a degree in the north and up to one degree in the south. Minimum temperatures have also been up to one degree warmer than average in the south and west, and up to half a degree warmer than average elsewhere.
With a mixture of wet and dry months, rainfall has generally been close to average for the January to October period. In the northeast some sites, including Launceston and Scottsdale, have had below average rainfall.
|Extremes in October 2012|
28.9 °C at Friendly Beaches on the 30th|
|Warmest days on average||
18.6 °C at Launceston (Ti Tree Bend)|
|Coolest days on average||8.1 °C at Mount Wellington|
0.9 °C at Mount Wellington on the 6th|
-4.7 °C at Liawenee on the 8th and 11th|
|Coolest nights on average||
0.0 °C at Mount Wellington|
|Warmest nights on average||
9.6 °C at Swan Island|
14.8 °C at St Helens Aerodrome on the 31st|
|Warmest on average overall||
13.3 °C at Larapuna (Eddystone Point)|
|Coolest on average overall||4.0 °C at Mount Wellington|
347.8 mm at Mount Read|
4.2 mm at Low Head|
40.6 mm at Mount Read on the 21st|
|Highest wind gust||
141 km/h at Mount Wellington on the 5th|
Click on a map to show it full size in a pop-up window
|Record lowest total October rainfall|
for October 2012 (mm)
|Maydena Post Office||49.0||53.5||in 2009||21||114.6|
|Lowest total October rainfall for at least 20 years|
for October 2012 (mm)
Most recent October
at least this dry
|Frankford (Rossville)||9.6||9.3||in 1914*||97||88.3|
* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.
|Record lowest October daily maximum temperature|
Lowest daily maximum
in October 2012 (°C)
|Scamander||11.0||on the 6th||11.5||on the 18th in 1976||29||17.4|
|Strahan Aerodrome||9.8||on the 6th||10.0||on the 2nd in 1994||24||16.1|
|Record lowest October mean daily minimum temperature|
Mean daily minimum
for October 2012 (°C)
|Devonport Airport||6.0||6.1||in 2003||20||7.3|
|Summary statistics for October 2012|
|Northern (district 91)|
|Bridport (Sea View Villas)||16.5||+0.1||21.0||31st||6.8||-1.2||1.4||28th||10.2||57.9||v low||18%|
|Burnie (Round Hill)||16.5||+0.6||21.4||28th||7.9||-0.1||3.7||7th||24.2||84.8||v low||29%|
|Cape Grim BAPS (Comparison)||14.8||+0.5||20.2||30th||9.2||0.0||6.2||11th||35.2||61.1||low||58%|
|Cressy Research Station||17.2||+0.1||24.5||30th||4.2||-0.8||-2.1||7th||18.2||47.3||low||38%|
|Devonport Airport||15.8||0.0||19.7||31st||6.0||-1.3||1.3||7th||7.8||63.6||v low||12%|
|Launceston (Ti Tree Bend)||18.6||+0.6||24.8||31st||6.1||-0.8||0.2||7th||13.8||49.8||v low||28%|
|Low Head||15.2||-0.1||18.2||31st||8.8||-0.7||3.9||7th||4.2||51.2||v low||8%|
|Luncheon Hill (Forestry)||14.9||+0.2||25.7||30th||6.0||+0.1||2.2||22nd||99.4||131.5||low||76%|
|Scottsdale (West Minstone Road)||16.9||+0.5||24.2||31st||4.8||-1.0||0.4||27th||23.0||81.9||v low||28%|
|Sheffield School Farm||16.4||+1.3||22.7||30th||5.1||-0.6||1.0||6th||25.8||78.4||low||33%|
|Smithton Aerodrome||16.1||-0.1||20.4||31st||6.2||-0.7||0.4||22nd||28.0||78.6||v low||36%|
|Wynyard Airport||16.8||+0.8||21.3||28th||5.4||-0.7||-0.2||7th||27.8||96.1||v low||29%|
|East Coast (district 92)|
|Bicheno (Council Depot)||17.4||0.0||26.2||4th||7.7||-0.8||3.5||7th||31.7||55.4||low||57%|
|Fingal (Legge Street)||18.0||+0.6||27.1||30th||3.3||-1.6||-1.6||23rd||19.6||54.2||low||36%|
|Lake Leake (Elizabeth River)||14.0||+0.3||22.2||30th||3.0||-0.5||-2.6||6th||50.6||75.0||average||67%|
|Larapuna (Eddystone Point)||18.2||+1.8||22.3||30th||8.5||-0.6||4.2||11th||36.0||68.9||low||52%|
|Maria Island (Point Lesueur)||16.1||24.7||30th||9.1||5.6||6th||38.2|
|Orford (Aubin Court)||17.0||-0.3||28.7||30th||7.1||-0.1||2.0||7th||50.2||59.7||average||84%|
|St Helens Aerodrome||18.1||+0.9||26.8||30th||7.0||-0.9||3.5||11th||23.4||65.7||low||36%|
|Swansea (Francis Street)||17.1||28.0||30th||6.6||2.0||6th||36.3|
|Midlands (district 93)|
|Ross (The Boulevards)||17.2||+0.2||25.4||30th||4.4||-0.5||-1.5||6th||22.8||41.7||low||55%|
|Southeast (district 94)|
|Bull Bay (Lauriston)||16.3||-0.2||23.6||4th||8.2||+0.1||4.8||7th||40.0||55.6||low||72%|
|Cape Bruny (Cape Bruny)||15.2||0.0||22.2||15th||8.1||-0.1||4.4||27th||60.0||66.6||average||90%|
|Cape Bruny Lighthouse||14.5||+0.1||21.7||3rd||8.0||+0.1||4.6||27th||58.6||83.3||low||70%|
|Dunalley (Stroud Point)||16.9||26.0||30th||8.6||5.3||7th||38.0|
|Geeveston (Cemetery Road)||16.8||+0.4||26.8||30th||6.3||+0.3||1.6||10th||63.4||90.8||average||70%|
|Grove (Research Station)||17.0||26.7||30th||5.1||-0.3||8th||27.8|
|Hobart (Ellerslie Road)||17.5||+0.5||28.6||30th||8.2||+0.4||3.6||7th||29.0||61.4||low||47%|
|Maatsuyker Island Lighthouse||12.5||-0.8||20.4||15th||7.7||+0.3||5.7||27th||99.0||105.7||average||94%|
|Melton Mowbray (North Stockman)||16.9||+0.3||26.4||30th||5.3||-0.2||0.1||8th||24.8||41.3||low||60%|
|Tunnack Fire Station||14.8||+0.4||24.0||30th||3.7||-0.7||-2.2||7th||47.2||54.1||average||87%|
|Derwent Valley (district 95)|
|Bushy Park (Bushy Park Estates)||18.3||+0.6||28.2||30th||5.3||-0.5||0.6||8th||19.0||57.0||v low||33%|
|Maydena Post Office||15.6||0.0||25.5||30th||5.0||+0.3||1.2||10th||49.0||114.6||lowest||43%|
|Ouse Fire Station||18.2||+0.5||28.0||30th||5.3||+0.1||-0.5||8th||18.8||51.2||v low||37%|
|Central Plateau (district 96)|
|Lake St Clair National Park||12.9||+0.2||23.0||30th||1.6||-0.4||-2.1||8th||129.6||173.3||low||75%|
|West Coast (district 97)|
|Hartz Mountain (Keoghs Pimple)||10.8||0.0||21.6||30th||2.4||-0.2||-0.6||27th||75.0||90.5||low||83%|
|Low Rocky Point||14.4||23.2||15th||8.2||3.6||22nd||79.4||110.5||low||72%|
|Scotts Peak Dam||15.0||+0.6||25.0||30th||5.3||+0.3||1.7||6th||136.0||164.1||low||83%|
|King Island (district 98)|
|King Island Airport||15.9||+0.2||23.7||30th||9.1||+0.4||4.2||9th||54.4||73.9||average||74%|
|Flinders Island (district 99)|
|Flinders Island Airport||17.4||+0.7||27.6||31st||8.1||-0.4||1.6||23rd|
|Antarctica and Macquarie Island (district 300)|
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 Thursday 1 November 2012. 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.