Friday, 1 December 2006 - Seasonal Climate Summary for Tasmania - Product code IDCKGC27R0

Tasmania in spring 2006:

Still very dry with some extreme days

Summary

Spring was punctuated with extremes of heat, cold and windy days - but overall it was the lack of rain that was the dominant feature of the season. Although September rain was near normal, both October and November were well down in terms of rainfall, especially the north coast which had its driest spring on record. This comes on top of an exceptionally dry winter, a locally dry autumn and even a dry start to the year, making the 11-month rainfall from January to November well below average.   

Details

Spring rains fail: Apart from September, a lack of significant rain bearing systems contributed to the very low rainfall totals over the state for spring. Many sites, especially in the north have had their lowest spring rainfall for at least 20 years, while many sites along the north coast and northern Midlands  have had their driest spring on record. Apart from the southwest, rainfall statewide was well below average, with many sites in the north, east and southeast receiving less than 100 mm for the three months.

A very dry year so far: The dry spring in the north continues a pattern that has dominated the year for Tasmania. Many sites in the north, Midlands and southeast have had their driest January-to-November on record. Some (including Burnie) are almost certain to have their driest-ever year, as they are so much drier than their previous driest. Many others (including Hobart) are close to having their driest year, but could miss that record if they have a wet December.

Extreme weather: Extreme and unusual weather was common in spring. In late September, very strong winds caused localised damage to property around the state, with gusts in excess of 100 km/h not uncommon, Maatsuyker Island recording an astounding 174 km/h. October was also quite extraordinary with many temperature records being broken. Two very hot days on the 11th and 12th of October (and a very warm night between) with strong winds and bushfires were followed only a week later by an extremely cold morning on the 16th and again on the 26th with severe frosts. Hail and snow were then reported on the 27th and 28th. November was another month of extremes with a cold outbreak on the 15th bringing snow and hail to low levels, and severe late season frosts especially toward the end of the month.    

Cold nights but close to normal daytime temperatures: Spring nights were chilly, especially in October and November where there were quite a few days of cold southwesterly winds and some cold clear nights. Apart from a patch of slightly warmer than average overnight temperatures in the southeast (including Hobart), temperatures were up to 1°C cooler over most districts. It was even cooler in the southwest and northeast, where overnight minimums were up to 1.5°C below average. The combination of some extremely hot days coupled with some very cold days resulted in close to normal daytime temperatures. It was about half a degree above average in the north, east and south of the state with the coastal fringes of the east coast a little warmer still. In contrast, it was cooler in the west and south by about half a degree.

50:50 outlook for summer: The Bureau of Meteorology's Seasonal Outlook for the summer of 2006/07 shows a neutral outlook for both rainfall and temperatures.

Further information

Ian Barnes-Keoghan or Tom Delfatti
Tasmania and Antarctica Climate Services Centre
Bureau of Meteorology
Phone (03) 6221 2043
Email climate.tas@bom.gov.au

Extremes

Hottest day
Highest temperature
34.3°C at Campania (Kincora) on 12 Oct
Warmest days on average
Highest mean daily maximum temperature
18.6°C at Bushy Park (Bushy Park Estates)
18.6°C at Campania (Kincora)
Coolest days on average
Lowest mean daily maximum temperature
7.4°C at Mount Read
Coldest day
Lowest daily maximum temperature
−1.3°C at Mount Wellington on 15 Nov
Coldest night
Lowest temperature
−7.9°C at Liawenee on 16 Oct
Coolest nights on average
Lowest mean daily minimum temperature
−0.3°C at Mount Wellington
Warmest nights on average
Highest mean daily minimum temperature
10.0°C at Hogan Island
Warmest night
Highest daily minimum temperature
19.2°C at Strahan Aerodrome on 12 Oct
Wettest overall
Highest total rainfall
753.4 mm at Mount Read
Driest overall
Lowest total rainfall
58.8 mm at Hogan Island
Wettest day
Highest daily rainfall
41.6 mm at Mount Read on 24 Sep
Highest wind gust
174 km/h at Maatsuyker Island Lighthouse on 21 Sep

Records

Record lowest total spring rainfall

Total rainfall
for spring 2006 (mm)
Previous lowest
for spring
Normal for
spring
Years of
record
Burnie (Round Hill) 92.9 112.6 in 1972 245.5 62
Pyengana (Forest Lodge Road) 143.4 151.3 in 1972 324.9 45
Devonport Airport 61.1 85.0 in 1972 198.7 44
Barrington Post Office 116.5 118.1 in 1972 291.9 39
Forthside Research Station 80.6 127.4 in 1982 256.0 37
Marrawah 176.6 179.1 in 1972 265.7 36
Scottsdale (West Minstone Road) 131.0 139.2 in 1982 257.9 36
King Island Airport 114.8 129.7 in 1982 222.3 32
Westbury (Birralee Road) 77.7 121.0 in 2004 202.7 29
Launceston (Ti Tree Bend) 81.0 100.2 in 1994 168.6 26
Bull Bay (Lauriston) 106.2 106.4 in 2003 160.8 24

Lowest total spring rainfall for at least 20 years

Total rainfall
for spring 2006 (mm)
Most recent lower
for spring
Normal for
spring
Years of
record
Frankford (Rossville) 97.8 67.6 in 1914 256.5 92
Latrobe (Coal Road) 86.1 77.7 in 1914 238.4 89
Ulverstone (Knights Road) 96.6 78.4 in 1914 248.8 89
Pioneer (Main Road) 100.6 72.3 in 1914 247.7 87
Cape Barren Island (Cape Barren School) 72.8 65.2 in 1914 168.0 77
Cape Sorell 202.0 165.5 in 1927 324.5 54
Mole Creek 115.2 67.3 in 1950 279.6 52
City of Melbourne Bay 147.0 142.4 in 1959 260.7 47
Lady Barron (Franklin Parade) 89.8 79.8 in 1942 174.0 47
Yolla (Sea View) 193.6 171.5 in 1961 372.2 45
Yambacoona 117.4 111.4 in 1961 216.7 39
Lilydale Post Office 101.2 95.9 in 1967 236.6 35
Elliott Research Station 139.6 131.4 in 1972 302.3 33
Ringarooma (Fry Street) 171.2 158.4 in 1972 314.8 33
Lorinna 200.8 196.6 in 1937 349.2 32
Irishtown 154.8 150.2 in 1972 312.2 28
Eaglehawk Neck (Jetty Road) 121.8 120.2 in 1982 210.8 24
Fingal (Legge Street) 85.4 38.3 in 1982 149.4 24
Launceston Airport Comparison 99.6 94.8 in 1982 175.3 24
Swansea Post Office 70.9 28.8 in 1982 146.5 24
York Plains (Handroyd) 82.2 70.2 in 1982 151.2 24
Deal Island 66.4 55.8 in 1982 172.8 23
Mangalore (Mangalore Farm) 101.8 89.6 in 1982 145.1 23
Naracoopa 161.2 138.1 in 1982 246.3 23
Bicheno (Council Depot) 72.6 52.6 in 1981 156.2 22
Eddystone Point 86.8 83.8 in 1982 191.8 22
Memana (Babel Farm) 98.0 88.4 in 1982 183.4 22
St Marys (Cullenswood) 69.4 32.7 in 1982 189.5 22
Copping 110.2 96.3 in 1982 197.2 21
Gladstone (Old Post Office) 96.6 84.8 in 1982 212.6 21
Oatlands Post Office 79.5 57.8 in 1982 146.4 21
Taroona (Taroona Crescent) 109.2 101.7 in 1982 172.4 21



Record lowest spring mean daily minimum temperature

Mean daily minimum
temperature
for spring 2006 (°C)
Previous lowest
for spring
Normal for
spring
Years of
record
Bicheno (Council Depot) 7.4 7.6 in 2003 8.6 31

Lowest spring mean daily minimum temperature for at least 20 years

Mean daily minimum
temperature
for spring 2006 (°C)
Most recent lower
for spring
Normal for
spring
Years of
record
Scottsdale (West Minstone Road) 4.9 4.6 in 1977 6.2 28



Record highest spring daily minimum temperature

Highest daily minimum
temperature
in spring 2006 (°C)
Previous highest
for spring
Normal for
spring
Years of
record
Cape Bruny Lighthouse 17.5 on 12 Oct 17.2 on 18 Nov 1978 7.9 82
Grove (Comparison) 18.5 on 12 Oct 18.1 on 29 Sep 1999 5.6 48






11-month rainfall records

Record lowest total January to November rainfall

Total rainfall
for January to November 2006 (mm)
Previous lowest
for January to November
Normal for
January to November
Years of
record
Bushy Park (Bushy Park Estates) 334.0 341.3 in 1945 525.8 132
Hobart (Ellerslie Road) 321.2 326.0 in 1914 560.3 125
Frankford (Rossville) 531.4 589.4 in 1914 996.2 112
Sorell (Whitlea) 281.4 284.9 in 1940 489.4 112
Ulverstone (Knights Road) 459.8 576.9 in 1919 904.0 101
St Marys (Cullenswood) 322.8 371.4 in 1940 767.6 100
Pioneer (Main Road) 449.2 528.3 in 1982 892.1 99
Yolla (Sea View) 760.2 835.4 in 1914 1360.5 99
Mangalore (Mangalore Farm) 281.0 286.2 in 1914 479.6 98
Irishtown 734.2 734.7 in 1940 1121.3 94
York Plains (Handroyd) 296.6 300.6 in 1940 506.1 88
Eaglehawk Neck (Jetty Road) 489.6 497.8 in 1959 808.1 80
Elliott Research Station 619.0 731.9 in 1940 1118.5 76
Bagdad Post Office 296.4 324.4 in 1982 523.8 70
Burnie (Round Hill) 389.3 626.6 in 1987 901.2 59
Grove (Comparison) 440.2 457.3 in 1959 685.1 53
Orford (Aubin Court) 366.6 372.6 in 1994 609.6 53
Glenorchy (Glenorchy Reservoir) 448.9 461.1 in 1959 702.6 52
Levendale 422.4 444.0 in 1919 679.9 52
Fort Direction 219.6 269.4 in 1982 477.9 48
Hobart Airport 253.8 306.8 in 1979 445.8 48
Lorinna 729.8 919.9 in 1933 1263.8 44
Devonport Airport 311.1 478.8 in 1994 723.4 42
Pyengana (Forest Lodge Road) 680.2 712.8 in 1982 1143.6 40
Barrington Post Office 523.3 670.3 in 1972 1063.1 37
Taroona (Taroona Crescent) 302.4 362.5 in 1979 580.8 37
Memana (Babel Farm) 420.6 518.6 in 1982 722.3 36
Forthside Research Station 434.2 610.5 in 1982 920.4 35
Rotherwood 359.6 371.9 in 1982 540.6 34
Scottsdale (West Minstone Road) 535.8 665.0 in 1994 932.7 34
Launceston (Ti Tree Bend) 350.2 452.4 in 1982 625.0 25
Bull Bay (Lauriston) 329.4 443.8 in 1987 538.2 23
Nugent (Twilight Valley) 492.6 531.6 in 1987 738.4 22
Risdon Vale (Poplar Road) 281.4 347.9 in 1968 486.1 22
Tea Tree (The Point) 311.4 351.0 in 1994 482.7 20



Summaries

 In the following table, certain key sites have been highlighted to make them easier to identify.


Summary statistics for spring 2006

Maximum temperatures
for spring
(°C)
Minimum temperatures
for spring
(°C)
Rainfall
for spring
(millimetres)
Mean for
spring
2006
Diff
from
normal
Highest for
spring
2006
Mean for
spring
2006
Diff
from
normal
Lowest for
spring
2006
Total for
spring
2006
Normal
for
spring
Rank of
spring
2006
Fraction of
spring
normal
Northern (district 91)
Bridport 16.4 0 24.4 12 Oct 7.7 −0.4 0.6 28 Oct 78.2 188.9 lowest 41%
Burnie 16.6 +0.7 25.0 28 Nov 8.5 +0.4 1.6 28 Oct 92.9 245.5 lowest 38%
Cape Grim BAPS 14.1 −0.4 21.8 12 Oct 8.8 −0.6 4.1 28 Oct 107.4 186.9 lowest 57%
Cressy Research Station 18.0
29.1 21 Nov 4.0
−4.9 16 Oct 60.8


Devonport Airport 15.9 +0.2 23.1 25 Nov 6.9 −0.5 −0.3 21 Oct 61.1 198.7 lowest 31%
Launceston 18.0 +0.2 29.0 21 Nov 6.1 −0.9 −1.4 21 Oct 81.0 168.6 lowest 48%
Launceston Airport 17.6
29.3 21 Nov 4.5
−2.7 21 Oct 94.2


Launceston Airport Comparison 16.7 +0.3 28.9 21 Nov 4.7 −0.9 −2.8 28 Oct 99.6 175.3 low 57%
Low Head 15.3
21.1 21 Nov 9.1
3.2 12 Sep 59.4


Luncheon Hill 14.7 +0.1 26.0 21 Nov 5.7 −0.6 0.0 28 Oct 262.0 415.9 lowest 63%
Marrawah 14.9 −0.1 23.0 11 Oct 7.8 −0.3 1.7 28 Oct 176.6 265.7 lowest 66%
Powranna 17.2 +0.3 29.4 21 Nov 4.4 −1.1 −3.2 29 Oct 99.2 175.1 lowest 57%
Scottsdale 16.3 −0.1 26.4 21 Nov 4.9 −1.3 −1.6 21 Oct 131.0 257.9 lowest 51%
Sheffield School Farm 15.7 +0.4 25.9 21 Nov 5.2 −0.8 −0.7 16 Oct 102.8


Smithton Aerodrome 16.4 0 25.5 12 Oct 6.2 −1.1 −0.7 29 Oct 128.0 253.0 lowest 51%
Wynyard Airport 16.8 +0.9 26.5 28 Nov 5.3 −0.9 −1.6 29 Oct



East Coast (district 92)
Bicheno 18.3 +1.1 31.4 12 Oct 7.4 −1.2 1.2 15 Nov 72.6 156.2 low 46%
Eddystone Point 17.4 +1.2 27.7 12 Oct 8.7 −0.6 0.7 28 Oct 86.8 191.8 very low 45%
Fingal 18.0 +0.8 28.4 12 Oct 4.0 −1.1 −4.6 16 Oct 85.4 149.4 low 57%
Friendly Beaches 18.4 +0.4 32.7 12 Oct 8.1 −0.7 1.2 22 Oct 86.6


Lake Leake 13.7 +0.3 23.1 27 Nov 2.9 −0.8 −5.2 16 Oct 153.0 209.9 low 73%
Maria Island 16.9
25.6 12 Oct 8.8
2.8 28 Oct 60.2


Orford 17.3 +0.1 29.7 12 Oct 7.1 −0.2 0.7 12 Sep 107.9 177.5 low 61%
Scamander 18.0 +0.5 29.5 12 Oct 7.6 −0.7 0.7 5 Sep 69.4 179.7 low 39%
St Helens Aerodrome 17.8
28.1 12 Oct 7.5
1.3 16 Oct 73.8


Swan Island 15.8
21.8 12 Oct 9.8
3.8 28 Oct 77.6


Swansea Post Office 18.5 +0.9 31.2 12 Oct 7.2 0 0.2 22 Oct 70.9 146.5 very low 48%
Midlands (district 93)
Ross 17.7 +0.8 30.1 21 Nov 4.1 −1.0 −5.5 16 Oct 105.2 142.4 low 74%
Southeast (district 94)
Bull Bay 17.0 +0.8 33.5 12 Oct 7.3 −0.7 1.0 28 Oct 106.2 160.8 lowest 66%
Campania 18.6
34.3 12 Oct 6.7
−1.5 16 Oct 90.6


Cape Bruny 15.4 0 30.9 12 Oct 7.9 −0.6 1.5 28 Oct 165.8


Cape Bruny Lighthouse 14.7 +0.3 30.5 12 Oct 7.8 −0.1 1.7 28 Oct 216.6 240.5 normal 90%
Dover 15.8 −0.3 31.9 12 Oct 6.5 +0.2 −0.5 16 Oct 195.0 240.5 low 81%
Geeveston 16.3 −0.1 31.0 12 Oct 6.4 +0.4 −1.2 16 Oct 256.8 254.0 normal 101%
Grove 17.0 +0.3 32.2 12 Oct 5.7 +0.1 −2.1 16 Oct 158.8 210.0 low 76%
Grove 16.9
31.6 12 Oct 5.1
−2.8 26 Oct 167.4


Hobart 17.1 +0.3 33.1 12 Oct 7.8 +0.1 2.1 26 Oct 103.8 169.0 low 61%
Hobart Airport 17.9 +0.7 33.4 12 Oct 7.6 +0.1 0.8 12 Sep 87.2 133.0 low 66%
Maatsuyker Island Lighthouse 12.7 −0.5 25.5 4 Oct 7.4 −0.2 1.6 28 Oct 214.6 309.3 low 69%
Melton Mowbray 17.5 +0.6 31.5 12 Oct 5.5 −0.2 −2.6 16 Oct 86.4 132.2 lowest 65%
Mount Wellington 8.1 +1.4 56.0 30 Nov −0.3 −0.5 −6.2 28 Oct



Tasman Island 13.7
30.5 12 Oct 7.2
1.5 28 Oct 123.4


Tunnack Fire Station 15.1 +0.6 26.4 12 Oct 3.8 −0.7 −5.4 16 Oct 118.2


Derwent Valley (district 95)
Bushy Park 18.6 +1.0 32.8 12 Oct 4.8 −1.0 −1.9 16 Oct 117.2 164.8 low 71%
Maydena Post Office 15.1 −0.6 30.0 12 Oct 4.3 −0.4 −2.0 13 Sep 339.6 362.2 normal 94%
Moogara 13.5 0 28.0 12 Oct 3.8 −0.6 −1.8 28 Oct 207.8 248.7 normal 84%
Ouse Fire Station 18.1
30.8 12 Oct 4.7
−2.5 12 Sep 121.6


Tarraleah Village 13.9 +0.3 27.1 12 Oct 2.5 −0.7 −5.7 16 Oct 321.1 328.9 normal 98%
Central Plateau (district 96)
Lake St Clair National Park 12.6 0 26.7 21 Nov 1.6 −0.5 −4.1 12 Sep 464.1 535.5 normal 87%
Liawenee 11.9
26.8 21 Nov 0.1
−7.9 16 Oct 196.2


West Coast (district 97)
Hartz Mountain 10.4 −0.7 26.4 12 Oct 1.9 −1.0 −3.4 28 Oct 264.4


Mount Read 7.4 −0.3 20.8 21 Nov 0.7 −0.9 −5.0 28 Oct 753.4


Scotts Peak Dam 13.8
28.2 21 Nov 4.7
−0.4 28 Oct 463.6


Strahan Aerodrome 15.7 −0.2 26.7 30 Nov 7.0 −0.2 −0.6 10 Sep



Strathgordon Village 13.3 −0.3 27.0 12 Oct 4.3 −1.2 −1.0 17 Sep 670.0 709.4 normal 94%
Warra 12.9
27.4 12 Oct 4.0
−1.1 16 Oct 540.8


King Island (district 98)
King Island Airport 15.6 −0.1 26.2 12 Oct 8.0 −1.0 0.1 16 Oct 114.8 222.3 lowest 52%
Flinders Island (district 99)
Flinders Island Airport 17.5 +0.8 32.7 12 Oct 7.8 −1.0 −1.1 12 Sep



Hogan Island 16.5
30.1 12 Oct 10.0
4.8 25 Sep 58.8



Notes

This statement has been prepared based on information available at noon on Friday 1 December 2006. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals are long-term averages 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 Rank indicates about where rainfall this time ranks in the climate record for the site.

Further information

Ian Barnes-Keoghan or Tom Delfatti
Tasmania and Antarctica Climate Services Centre
Bureau of Meteorology
Phone (03) 6221 2043
Email climate.tas@bom.gov.au