Monday, 3 March 2008 - Seasonal Climate Summary for Tasmania - Product code IDCKGC27R0

Tasmania in summer 2007−08: wet in some areas, dry in others, warm overall

Some heavy rainfall events ensured that some parts of Tasmania had above-average rain for summer, notably the northeast. But a very dry January meant that the West Coast ended the season with below-average rain, as did the lower East Coast which missed out on some of the bigger falls of December. A very warm December and January ensured the summer as a whole had above-average temperatures, despite some cold weather during February.

Separate summaries are available for each of the months of summer: December 2007, January 2008 and February 2008, as is an archive of previous seasonal summaries for Tasmania, and many other climate summaries and diagnostics.

Details

Wet in some areas: There were a number of heavy rainfall events through summer, with thunderstorms prominent in December and troughs bringing heavy rain to the northeast in both January and February. The result was above-average rain in the northeast (although not on Flinders Island); Scamander had its wettest summer on record. Rain was also above average in other parts of the north, particularly because of some heavy rain events during December and February.

Dry in the some areas: January was a dry month across Tasmania; the driest on record in some areas. The lower East Coast missed out on most of the heavier rain events during December, and rainfall totals for the summer were below average there. In the western highlands, rain was at best average during December and well below average during January; the deficit was not made up during February so the area had below-average rain for summer.

Many warm days: December and January had many very warm days, with temperatures pushing into the 30s (Tarraleah had its hottest summer day on record). In both months mean daily maximum (daytime) temperatures were well above average. Although there were very warm days in February, most of the month (and especially the end) was rather cool. Taken over the whole summer, mean maximum temperatures were above normal, typically by 0.5 to 1.0°C, but in most places it was cooler than last summer.

Nights mild overall: Although there were a few cool nights right through summer, these were balanced by the many very mild nights, especially during December and January. Overall, mean daily minimum (overnight) temperatures were above average for summer, mostly by about 0.5°C, but cooler than last summer almost everywhere.

Further information

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

Extremes

Hottest day
Highest temperature
38.0°C at Ouse Fire Station on 31 Dec 2007
Warmest days on average
Highest mean daily maximum temperature
24.9°C at Ouse Fire Station
Coolest days on average
Lowest mean daily maximum temperature
13.2°C at Mount Wellington
Coldest day
Lowest daily maximum temperature
2.3°C at Mount Wellington on 28 Feb 2008
Coldest night
Lowest temperature
−2.6°C at Lake St Clair National Park on 1 Feb 2008
Coolest nights on average
Lowest mean daily minimum temperature
4.1°C at Mount Wellington
Warmest nights on average
Highest mean daily minimum temperature
14.7°C at Hogan Island and Swan Island
Warmest night
Highest daily minimum temperature
20.2°C at Hobart Airport on 6 Jan 2008
and at Flinders Island Airport on 27 Jan 2008
Wettest overall
Highest total rainfall
607.2 mm at Mount Read
Driest overall
Lowest total rainfall
69.4 mm at Mount Morriston (Macquarie River)
Wettest day
Highest daily rainfall
111.0 mm at Gray (Craigie-Lea) on 6 Feb 2008
Highest wind gust
141 km/h at Mount Wellington on 11 Jan 2008

Records

Record highest total summer rainfall
Total rainfall
for summer 2007−08 (mm)
Previous highest
for summer
Years of
record
Normal for
summer
Scamander 326.3 290.4 in 2003 23 152.1



Record highest summer temperature
Highest temperature
in summer 2007−08 (°C)
Previous highest
for summer
Years of
record
Normal for
summer
Tarraleah Village 35.1 on 31 Dec 2007 35.0 on 24 Jan 1982 25 18.9



Summaries

In this table, key sites have been highlighted to make them easier to find. This table is very wide and may not fit if printed.


Summary statistics for summer 2007−08
Maximum temperatures
for summer
(°C)
Minimum temperatures
for summer
(°C)
Rainfall
for summer
(millimetres)
Mean for
summer
2007−08
Diff
from
normal
Highest for
summer
2007−08
Mean for
summer
2007−08
Diff
from
normal
Lowest for
summer
2007−08
Total for
summer
2007−08
Normal
for
summer
Rank of
summer
2007−08
Fraction of
summer
normal
Northern (district 91)
Bridport 21.2 −0.2 27.8 29 Dec 2007 12.5 0.0 5.6 6 Dec 2007 158.5 127.1 high 125%
Burnie 21.3 +0.7 29.6 1 Jan 2008 13.5 +1.1 7.4 29 Feb 2008 165.4 152.7 normal 108%
Cape Grim BAPS 19.1 +0.6 26.2 5 Feb 2008 13.1 +0.2 8.5 23 Jan 2008 100.4 111.9 normal 90%
Cressy Research Station 24.8   35.1 1 Jan 2008 10.4   3.0 25 Feb 2008 140.8
Devonport Airport 21.5 +0.9 30.1 11 Jan 2008 12.2 +0.5 4.3 13 Feb 2008 148.6 132.9 normal 112%
Launceston 23.9 +0.3 31.8 1 Jan 2008 12.4 +0.8 5.8 25 Feb 2008 147.4 124.1 high 119%
Launceston Airport 24.3   34.2 1 Jan 2008 10.5   3.8 5 Dec 2007 97.0
Launceston Airport (old) 23.4 +0.9 32.5 1 Jan 2008 10.6 +0.8 3.4 29 Feb 2008 115.8 133.7 normal 87%
Low Head 20.5 +0.5 24.6 3 Feb 2008 14.1 +0.4 9.0 29 Feb 2008 109.8 121.6 normal 90%
Luncheon Hill 20.4 +0.3 30.3 10 Jan 2008 9.7 −0.1 2.0 29 Feb 2008 178.0 223.9 low 79%
Marrawah 20.2 +0.5 27.2 10 Jan 2008 12.0 +0.4 6.8 29 Feb 2008 157.4 156.4 normal 101%
Powranna 24.4 +0.9 35.1 1 Jan 2008     3.6 11 Dec 2007
Scottsdale 22.5 +0.3 31.9 1 Jan 2008 11.0 +0.6 3.9 5 Dec 2007 111.6 166.7 low 67%
Sheffield School Farm 21.0 0.0 28.4 11 Jan 2008 10.2 −0.1 3.1 29 Feb 2008 217.2 163.1 high 133%
Smithton Aerodrome 21.4 +0.6 28.3 1 Jan 2008 10.8 −0.1 3.1 27 Feb 2008 110.0 132.4 low 83%
Wynyard Airport 21.6 +0.9 31.8 1 Jan 2008 11.2 +0.6 3.1 14 Jan 2008 212.8 153.2 high 139%
East Coast (district 92)
Bicheno 21.6 +0.7 36.4 11 Jan 2008 13.0 +0.6 6.9 8 Feb 2008 229.2 181.9 high 126%
Eddystone Point 22.1 +1.7 32.0 29 Dec 2007 14.0 +0.6 7.8 25 Dec 2007 181.8 152.4 high 119%
Fingal 22.8 +0.3 35.6 31 Dec 2007 10.1 +0.5 2.5 11 Dec 2007 152.4 132.8 high 115%
Friendly Beaches 22.4 0.0 36.4 11 Jan 2008 12.7 0.0 7.3 13 Feb 2008 241.0
Lake Leake 19.5 +0.9 30.4 31 Dec 2007 7.6 −0.3 0.1 13 Feb 2008 95.4 172.6 low 55%
Maria Island 21.1   33.5 11 Jan 2008 13.1   7.8 24 Feb 2008
Orford 21.9 +0.5 34.9 11 Jan 2008 12.2 +0.8 5.6 13 Feb 2008 91.4 159.0 low 57%
Scamander 21.5 +0.2 34.3 11 Jan 2008 12.9 +0.7 7.2 26 Dec 2007 326.3 152.1 highest 215%
St Helens Aerodrome 21.7   32.2 11 Jan 2008 13.0   6.7 11 Dec 2007 291.4
Swan Island 20.5   26.3 1 Jan 2008 14.7   8.7 29 Feb 2008 212.2
Swansea Post Office 22.1 +0.5 36.2 11 Jan 2008 12.2 +0.8 7.1 13 Feb 2008 120.2 152.3 normal 79%
Midlands (district 93)
Ross 24.2 +0.6 33.3 5 Jan 2008 10.2 +0.3 1.9 11 Dec 2007 89.6 127.5 low 70%
Southeast (district 94)
Bull Bay 21.0 +0.3 35.5 11 Jan 2008 11.9 +0.1 6.0 10 Dec 2007 141.6 158.6 normal 89%
Campania 24.0   37.4 11 Jan 2008 11.2   4.5 1 Feb 2008 127.0
Cape Bruny 19.7 +0.6 33.1 19 Feb 2008 11.8 +0.1 5.4 25 Dec 2007 208.4
Cape Bruny Lighthouse 18.9 +1.0 31.7 19 Feb 2008 12.0 +0.8 4.2 25 Dec 2007 247.0 195.6 high 126%
Dover 20.3 +0.3 33.1 5 Jan 2008 9.3 −0.6 2.6 1 Feb 2008 173.6 179.8 normal 97%
Geeveston 21.7 +0.6 34.7 31 Dec 2007 9.4 0.0 2.4 1 Feb 2008 182.2 179.6 normal 101%
Grove 22.6 +1.0 36.2 31 Dec 2007 9.5 +0.3 1.1 1 Feb 2008 138.8 156.8 normal 89%
Grove 22.7   35.6 19 Feb 2008 8.7   0.1 1 Feb 2008 146.0
Hobart 22.6 +1.5 35.5 11 Jan 2008 12.4 +0.9 6.9 24 Feb 2008 147.2 145.3 normal 101%
Hobart Airport 22.7 +0.9 36.1 31 Dec 2007 12.3 +0.7 6.4 13 Feb 2008 122.8 132.1 normal 93%
Maatsuyker Island 17.0 +0.4 28.9 19 Feb 2008 11.2 +0.7 5.8 24 Feb 2008 191.6 240.6 normal 80%
Melton Mowbray 23.1 0.0 37.2 31 Dec 2007 10.0 +0.2 2.4 1 Feb 2008 113.2 104.8 normal 108%
Mount Wellington 13.2 +0.5 26.7 10 Jan 2008 4.1 −0.2 −1.8 24 Feb 2008 181.8 252.4 normal 72%
Tasman Island 17.4   32.6 11 Jan 2008 11.1   4.2 24 Feb 2008 217.6
Tunnack Fire Station 21.0 +0.1 32.1 5 Jan 2008 8.5 0.0 1.2 11 Dec 2007 139.0 142.9 low 97%
Derwent Valley (district 95)
Bushy Park 24.8 +1.6 37.4 10 Jan 2008 9.4 −0.3 1.8 22 Jan 2008 104.4 127.4 normal 82%
Maydena Post Office 21.8 +0.4 35.0 31 Dec 2007 8.1 −0.3 0.6 1 Feb 2008 186.0 216.3 normal 86%
Moogara 20.0 +1.1 33.0 10 Jan 2008 8.1 +0.2 2.5 13 Feb 2008 145.8 160.7 normal 91%
Ouse Fire Station 24.9 +0.3 38.0 31 Dec 2007 9.1 −0.4 1.6 1 Feb 2008
Tarraleah Village 20.5 +1.5 35.1 31 Dec 2007 7.0 +0.3 0.4 29 Feb 2008 172.8 222.9 normal 78%
Central Plateau (district 96)
Lake St Clair 19.2 +0.7 32.6 31 Dec 2007 5.3 −0.5 −2.6 1 Feb 2008 246.2 321.9 low 76%
Liawenee 17.9   31.2 31 Dec 2007 4.4   −2.3 1 Feb 2008 225.2
West Coast (district 97)
Hartz Mountain 17.1 +0.3 34.0 31 Dec 2007 6.2 −0.4 0.3 25 Dec 2007 233.5 198.8 high 117%
Mount Read 13.9 +0.5 27.0 31 Dec 2007 5.1 −0.2 −0.8 29 Feb 2008 607.2
Scotts Peak Dam 21.0 +1.2 36.3 31 Dec 2007 8.7 −0.2 3.3 1 Feb 2008 327.2
Strahan Aerodrome 20.8 +0.5 36.7 31 Dec 2007 10.1 −0.2 3.4 29 Feb 2008 238.2 236.6 normal 101%
Strathgordon Village 19.4 +0.7 35.0 31 Dec 2007 9.0 −0.1 3.5 15 Jan 2008 394.7 461.7 low 85%
Warra 18.8   34.1 31 Dec 2007 7.6   0.9 1 Feb 2008 317.2
King Island (district 98)
King Island Airport 21.0 +1.0 31.9 19 Feb 2008 12.5 +0.4 4.0 23 Jan 2008 141.0 117.4 high 120%
Flinders Island (district 99)
Flinders Island Airport 22.9 +1.3 35.6 11 Jan 2008 14.1 +1.3 5.9 15 Jan 2008 74.9 142.4 low 53%
Hogan Island 21.3   32.2 11 Jan 2008 14.7   9.7 29 Feb 2008 87.8
Macquarie Island (district 300)
Macquarie Island 8.6 +0.2 11.0 24 Feb 2008 5.2 +0.3 1.9 1 Dec 2007 301.8 246.8 very high 122%

Notes

This statement has been prepared based on information available at 10 am on Monday 3 March 2008. 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 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 "normal" 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, normal in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of normal shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

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