Tuesday 1 July 2008 - Monthly Climate Summary for Tasmania - Product code IDCKGC17R0

Tasmania in June 2008: Warm, and again dry in the east

It was another very dry month in eastern Tasmania, and even though there were some wet days in other parts of the state most areas had less than average June rain. Temperatures were above average overall (with some places having their warmest June on record), but there were some very cold and frosty nights and snowy weather. Westerly winds were dominant through the month, and there was a burst of exceptionally strong winds near the end of the month.

Details

Dry in the east: A series of cold fronts crossing between the 10th and the 13th brought rain to almost all areas, with some heavy falls in the northeast: Ringarooma received 65.4 mm in the 24 hours to 9 am on the 13th. The next major rainfall event was around the 26th, which brought 20 to 30 mm to the southeast, some of the heaviest rain seen there for several months; sites in western and central areas received even more. Despite these falls, the relatively dry start to the month meant Flinders Island, the East Coast, the Midlands, and parts of the north were much drier than usual overall. The rest of the state had rain within the "average" band, but even these were mostly below their long-term June mean. Several sites on the East Coast had less than 10 mm for the whole month, and some had their lowest June rainfall for several decades.
Cradle Valley (Waldheim) recorded both the wettest single day of 82.6 mm on the 27th and the highest total of 286 mm (Mount Read, often the wettest spot in the state, suffered malfunctions during the month).

Mostly warm days - but some snow: There were a number of relatively warm days through the month, especially up to the 6th (when a high over the Tasman Sea directed mild air across the state), and around the 10th, the 18th and in the final two days (in northwesterly winds ahead of cold fronts). The most notable cold days were the 7th, 13th, 21st and 26th (all the result of cold fronts crossing from the west). Snow was seen settling below 500 metres on the 26th. The 17th was a very cold day in the Derwent Valley, when persistent fog kept the sun at bay. Overall, warm weather dominated cold, with mean maximum temperatures typically 1 to 1.5°C above average. Some sites had their highest June mean daily maximum temperature on record whilst Hobart, Burnie and Bicheno had their warmest since 1988.

Mostly warm nights - but some frosts: Mild nights were more common than cold ones during June, with some especially mild mornings around the 4th, the 10th to 12th, the 19th and at the end of the month. There were some cold mornings too, particularly the 6th to the 8th, the 14th to the 17th and around the 22nd and 24th; local frosts were reported on those days, with the east and southeast most affected. Mean daily minimum temperatures were above average across the state, typically by 1 to 1.5°C but by less than 1°C in the east and southeast. A few spots had their highest June mean daily minimum temperature or their highest for many years.

Windy weather: Westerly winds dominated the state for much of the month, and these were particularly strong from the 20th to the 27th. Some exposed sites recorded storm-force winds, and gales were reported from many areas. On the morning of the 26th, Hogan Island (in Bass Strait) recorded a gust to 180 km/h, the strongest gust recorded using standard instruments in Tasmania during June and the third-strongest gust ever recorded in the state (the strongest are both on Mount Wellington: 200 km/h in March 1998 and 193 km/h in August 2004). Even stronger winds were detected using alternative instruments at Cape Grim, and it is likely that still stronger gusts occurred in places without instrumentation.

Further information

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

Extremes

Hottest day
Highest temperature
19.7°C at Scamander on the 27th
Warmest days on average
Highest mean daily maximum temperature
15.8°C at Bicheno (Council Depot)
Coolest days on average
Lowest mean daily maximum temperature
5.8°C at Mount Wellington
Coldest day
Lowest daily maximum temperature
−1.2°C at Mount Wellington on the 21st
Coldest night
Lowest temperature
−8.1°C at Liawenee on the 16th
Coolest nights on average
Lowest mean daily minimum temperature
−1.0°C at Liawenee
Warmest nights on average
Highest mean daily minimum temperature
10.8°C at Hogan Island
Warmest night
Highest daily minimum temperature
13.4°C at Swan Island on the 11th
Wettest overall
Highest total rainfall
286.0 mm at Cradle Valley (Waldheim)
Driest overall
Lowest total rainfall
5.6 mm at Swansea Post Office
Wettest day
Highest daily rainfall
82.6 mm at Cradle Valley (Waldheim) on the 27th
Highest wind gust
180 km/h at Hogan Island on the 26th

Records

Record lowest total June rainfall
Total rainfall
for June 2008 (mm)
Previous lowest
for June
Years of
record
Normal for
June
Copping 17.2 19.6 in 1979 38 53.7

Lowest total June rainfall for at least 20 years
Total rainfall
for June 2008 (mm)
Most recent lower
for June
Years since
lower
Normal for
June
Fingal (Legge Street) 10.6 10.4 in 1944 64 64.2
Flinders Island Airport 17.0 12.9 in 1948 59 71.8
Swansea Post Office 5.6 2.5 in 1965 43 56.9
Lewis Hill (St Pauls River) 8.8 5.8 in 1979 29 59.8
Nugent (Twilight Valley) 20.4 19.8 in 1984 23 55.4




Record highest June mean daily maximum temperature
Mean daily maximum
temperature
for June 2008 (°C)
Previous highest
for June
Years of
record
Normal for
June
Eddystone Point 15.4 = 15.4 in 1988 51 13.7
Hobart Airport 14.6 14.5 in 1962 51 12.9
Flinders Island Airport 15.7 15.6 in 1988 47 14.0
Mount Wellington 5.8 5.7 in 2005 28 3.4
Tarraleah Village 10.6 10.1 in 2005 24 8.7
Fingal (Legge Street) 14.0 = 14.0 in 1988 23 12.7
Wynyard Airport 14.5 14.1 in 2005 22 13.3


Highest June mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for June 2008 (°C)
Most recent higher
for June
Years since
higher
Normal for
June
Orford (Aubin Court) 14.4 14.5 in 1984 24 13.3
Bicheno (Council Depot) 15.8 16.6 in 1988 20 14.4
Burnie (Round Hill) 14.7 14.8 in 1988 20 13.4
Hobart (Ellerslie Road) 13.9 14.0 in 1988 20 11.9



Record highest June mean daily minimum temperature
Mean daily minimum
temperature
for June 2008 (°C)
Previous highest
for June
Years of
record
Normal for
June
Burnie (Round Hill) 8.7 = 8.7 in 1988 60 6.7
Scamander 6.7 = 6.7 in 1978 26 5.4

Highest June mean daily minimum temperature for at least 20 years
Mean daily minimum
temperature
for June 2008 (°C)
Most recent higher
for June
Years since
higher
Normal for
June
Eddystone Point 9.2 9.4 in 1988 20 7.9
Wynyard Airport 5.7 5.8 in 1962 20 4.0



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 June 2008
Maximum temperatures
for June
(°C)
Minimum temperatures
for June
(°C)
Rainfall
for June
(millimetres)
Mean for
June
2008
Diff
from
normal
Highest for
June
2008
Mean for
June
2008
Diff
from
normal
Lowest for
June
2008
Total for
June
2008
Normal
for
June
Rank of
June
2008
Fraction of
June
normal
Northern (district 91)
Bridport 14.8 +0.8 18.1 4th 7.3 +1.1 2.2 22nd 59.1 87.1 low 68%
Burnie 14.7 +1.3 17.2 18th 8.7 +2.1 4.6 22nd 74.8 103.6 normal 72%
Cape Grim BAPS 14.0 +1.1 17.0 5th 9.9 +1.3 7.0 1st 63.2 80.0 low 79%
Cressy Research Station 12.9 +0.6 17.3 3rd 2.8 +1.3 −3.7 15th 34.0
Devonport Airport 14.4 +1.1 17.0 4th 6.8 +1.9 0.4 22nd 52.6 79.2 low 66%
Launceston 14.2 +1.2 17.4 27th 4.5 +1.8 −0.5 15th 60.6 65.5 normal 93%
Launceston Airport 13.0   16.2 27th 4.1   −1.0 22nd 51.0
Launceston Airport Comparison 12.5 +1.1 15.3 4th 4.3 +1.6 −1.2 22nd 55.0 61.8 normal 89%
Low Head 14.3 +0.9 16.9 4th 8.4 +1.1 3.5 22nd 49.4 72.6 low 68%
Luncheon Hill 11.8 +0.8 16.2 4th 6.5 +0.9 3.5 22nd 132.2 145.1 normal 91%
Marrawah 13.9 +1.1 17.0 5th 8.8 +1.5 6.5 1st 82.4 123.5 low 67%
Scottsdale 13.3 +0.7 17.5 4th 5.2 +1.1 −0.7 22nd 81.4 103.2 normal 79%
Sheffield School Farm 12.5 +1.0 16.3 4th 5.3 +1.5 1.5 15th 67.6 107.5 low 63%
Smithton Aerodrome 14.7 +1.1 17.6 5th 6.0 +1.2 0.6 6th 86.6 96.8 normal 89%
Wynyard Airport 14.5 +1.3 17.3 19th 5.7 +1.7 1.0 22nd 95.4 111.4 normal 86%
East Coast (district 92)
Bicheno 15.8 +1.4 18.3 12th 7.9 +1.4 3.3 24th 12.4 60.0 low 21%
Eddystone Point 15.4 +1.7 17.7 5th 9.2 +1.3 3.9 14th 34.2 74.2 low 46%
Fingal 14.0 +1.3 16.2 19th 1.9 +0.9 −2.9 15th 10.6 64.2 very low 17%
Friendly Beaches 14.9 +0.8 17.5 12th 6.8 +0.5 2.1 8th 12.6 36.2 low 35%
Lake Leake 10.2 +1.2 12.6 10th 1.0 +0.5 −3.8 22nd 22.2 86.1 very low 26%
Maria Island 14.0   17.3 11th 8.6   5.3 27th 6.8
Orford 14.4 +1.1 18.5 11th 4.8 +0.8 −0.5 17th 10.2 50.5 very low 20%
Scamander 15.3 +0.9 19.7 27th 6.7 +1.3 2.9 16th 15.1 48.4 very low 31%
St Helens Aerodrome 14.7   17.6 27th 6.3   1.6 16th 27.2
Swan Island 14.8   16.8 9th 10.0   4.9 22nd 35.0
Swansea Post Office 15.0 +1.1 18.1 30th 4.8 +0.4 −0.7 17th 5.6 56.9 very low 10%
Midlands (district 93)
Ross 12.8 +1.1 15.8 4th 2.7 +1.1 −2.7 22nd 17.8 35.4 low 50%
Southeast (district 94)
Bull Bay 13.6 +1.1 18.0 29th 6.7 +0.5 3.6 16th 20.4 43.8 very low 47%
Campania 14.8   17.9 29th 4.5   −2.8 17th 24.8
Cape Bruny 13.2 +0.9 16.9 30th 7.5 +0.4 4.2 16th 54.4 67.4 normal 81%
Cape Bruny Lighthouse 12.9 +1.3 16.7 30th 4.5 16th 74.0 90.0 normal 82%
Dover 13.6 +1.0 17.8 29th 4.3 +0.5 −1.2 17th 53.8 78.7 normal 68%
Geeveston 13.1 +0.9 17.4 30th 3.1 +1.0 −3.7 17th 72.2 70.7 normal 102%
Grove 13.6 +1.5 18.5 29th 2.8 +0.4 −3.3 16th 40.6 60.4 normal 67%
Grove 13.7   18.5 29th 2.4   −3.9 16th 40.2
Hobart 13.9 +2.0 18.1 29th 6.1 +1.0 1.6 17th 37.0 53.8 normal 69%
Hobart Airport 14.6 +1.7 18.1 29th 5.4 +0.8 −0.4 17th 16.0 30.1 low 53%
Maatsuyker Island Lighthouse 12.4 +1.0 15.9 9th 8.2 +1.0 4.6 22nd 76.8 118.6 low 65%
Melton Mowbray 13.2 +1.4 17.0 18th 3.3 +1.3 −1.8 16th 29.2 32.1 normal 91%
Mount Wellington 5.8 +2.3 12.2 17th 0.3 +1.1 −4.2 22nd
Tasman Island 12.2   14.6 10th 7.6   3.7 22nd 44.8
Tunnack Fire Station 11.0 +1.1 13.8 4th 3.1 +1.0 −2.5 24th 28.8 47.1 low 61%
Derwent Valley (district 95)
Bushy Park 12.9 +1.7 18.6 29th 2.3 +0.2 −3.3 17th
Maydena Post Office 11.4 +0.6 16.7 29th 3.7 +1.4 −1.8 8th 89.1 100.1 normal 89%
Moogara 10.2 +1.3 15.0 29th 4.1 +1.7 1.0 18th 52.0 66.9 normal 78%
Ouse Fire Station 12.5 +0.6 17.6 29th 2.4 +1.2 −3.4 17th 32.4 46.1 normal 70%
Tarraleah Village 10.6 +1.9 13.8 29th 2.3 +1.8 −3.1 17th 107.6 102.3 normal 105%
Central Plateau (district 96)
Butlers Gorge 9.9 +2.4 13.3 3rd 0.8 +0.6 −5.6 17th 162.8 154.2 normal 106%
Lake St Clair National Park 9.3 +1.7 13.1 3rd 0.6 +0.5 −5.5 16th 184.0 173.9 normal 106%
Liawenee 8.2   12.4 15th −1.0   −8.1 16th 44.0
West Coast (district 97)
Hartz Mountain 7.6 +0.5 14.8 17th 2.7 +0.6 −1.3 22nd 65.6 85.8 normal 76%
Mount Read 5.9 +1.4 11.4 16th 1.8 +1.0 −1.4 22nd
Scotts Peak Dam 10.6 +1.1 15.3 18th 4.8 +0.9 −0.4 17th 178.6
Strahan Aerodrome 13.7 +1.2 16.5 18th 6.6 +1.2 1.4 1st 126.8 163.1 normal 78%
Strathgordon Village 10.6 +1.2 14.5 18th 4.9 +1.2 0.4 8th 252.4 217.1 normal 116%
Warra 10.1   13.8 30th 3.8   −0.7 17th 155.6
King Island (district 98)
King Island Airport 14.7 +0.9 17.1 9th 8.6 +0.5 2.4 16th 82.4 95.8 normal 86%
Flinders Island (district 99)
Flinders Island Airport 15.7 +1.6 18.7 18th 6.6 −0.4 0.9 14th 17.0 71.8 very low 24%
Hogan Island 14.7   16.7 10th 10.8   6.7 14th 50.0
Antarctica and Macquarie Island (district 300)
Macquarie Island 5.5 +0.5 7.2 30th 2.0 +0.5 −5.5 24th 60.8 76.3 normal 80%

Notes

This statement has been prepared based on information available at 10 am on 1 July 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
Meteorologist
Tasmania and Antarctica Climate Services Centre
Bureau of Meteorology
Phone (03) 6221 2043
Email climate.tas@bom.gov.au