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MONTHLY CLIMATE SUMMARY - TASMANIA
Plenty of rain in the northeast corner: There were several periods of moderate to heavy rain in the northeast highlands, notably around the 2nd, the 16th and the end of the month. Totals over 100 mm were common, with Mount Victoria registering 354 mm (only slightly less than the west coast's Mount Read). Gladstone, with 125 mm, had its wettest July since it received 137 mm in 1989, whilst Eddystone Point's 91 mm was its wettest July since 1993.
Another relatively dry month in the north, Midlands and Derwent Valley: Several parts of the state again had less rain than is usual for
the time of year. Particularly affected were the Midlands and the
Derwent Valley and the north (with the exception of the northeast).
Bushy Park, with 20.8 mm, had its driest July since recording 17.0 mm
in 1973. Although there were several rainy days through the month, and
some rain fell in all areas, it was certainly not enough to remove the
rainfall deficit that has been building in these areas over recent
months. Several locations have had their driest-ever
January to July. Hobart has had its driest January-to-July since 1984.
Some mild days, some cold days: There were a few relatively mild days during July, notably the 10th in the
southeast and the 16th in the north (when both Marrawah and Wynyard set
new records for highest July temperature).
The main cold spells were the 11th and 12th (which saw snow below 500
metres in some areas), and on the 18th and 19th. Averaged across the
month,
maximum (Daytime) temperatures were above normal by about half a degree
in most areas, but a little below normal in the far south and parts of
the east coast. Grove had its lowest mean daily maximum temperature
since 1995, and Dover its lowest since 1996.
Fewer frosty nights than recent months: Unlike May and June, most places had only a few spells of cold and frosty nights, mainly around the 3rd, the 12th, and the 19th to 23rd. These were mixed in with some relatively mild nights, especially the 8th to 11th, the 16th and the 27th. Averaged across the month, minimum (overnight) temperatures were above normal in the northeast half and below normal in southwest, typically by about half a degree.
Hobart's cold nights against a warming trend: Minimum (overnight) temperatures have
been generally increasing in Hobart over the last few decades. Hobart's mean daily minimum temperature this July
of 4.6 °C was about 0.1 °C above the average over the whole period of
Hobart's record from 1882. But it was about 0.6 °C below the average over the last 20 years, and the lowest for any July since 1995. In contrast, the mean daily minimum temperature in Hobart for July last year
was 6.2 °C, the highest since 1946. The relatively cold July 2006
and relatively warm July 2005 demonstrate the year-to-year variability
is often much greater than any long-term change.
Bicheno, Bull Bay, and Dover also had their lowest mean daily minimum temperature for July since 1995.
Included in this summary are a table of extremes, some new records, and summaries for sites in Tasmania
Weather extremes during July 2006 | ||
|---|---|---|
| Highest temperature Hottest day |
17.7 °C | Wynyard Airport on 16th |
| Highest mean daily maximum temperature Warmest days on average |
14.0 °C | Bicheno (Council Depot) |
| Lowest mean daily maximum temperature Coolest days on average |
2.9 °C | Mount Wellington |
| Lowest daily maximum temperature Coldest day |
-2.5 °C | Mount Wellington on 18th |
| Lowest temperature Coldest night |
-6.4 °C | Mount Wellington on 12th |
| Lowest mean daily minimum temperature Coldest nights on average |
-1.9 °C | Liawenee |
| Highest mean daily minimum temperature Mildest nights on average |
9.2 °C | Hogan Island |
| Highest daily minimum Warmest night |
12.6 °C | Flinders Island Airport on 16th |
| Highest total rainfall Wettest overall |
361.0 mm | Mount Read |
| Lowest total rainfall Driest overall |
15.4 mm | Tunbridge (Austin-Vale) |
| Highest daily rainfall Wettest day |
65.0 mm | Mount Victoria on 2nd |
| Strongest wind gust | 131 km/h |
Mount Wellington on 8th |
Record Highest Temperature for July |
||||||
|---|---|---|---|---|---|---|
|
Highest temperature in July 2006 (°C) |
Previous highest for July |
Years of record |
||||
| Marrawah | 17.0 | on 16th |
16.4 | on 27th in 1975 |
36 | |
| Wynyard Airport | 17.7 | on 16th |
16.6 | on 6th in 2003 |
21 | |
Record Lowest Total Rainfall for January to July |
||||
|---|---|---|---|---|
|
Total rainfall for January to July 2006 (mm) |
Previous lowest for January to July |
Years of record |
||
| Ulverstone (Knights Road) | 332.4 | 342.6 | in 2005 |
103 |
| Elliott Research Station | 429.0 | 430.1 | in 1934 |
78 |
| Burnie (Round Hill) | 268.6 | 340.1 | in 2005 |
60 |
| Fort Direction | 139.7 | 165.4 | in 1984 |
51 |
| Devonport Airport | 230.4 | 252.3 | in 2005 |
42 |
| Forthside Research Station | 328.2 | 346.2 | in 1997 |
40 |
| Barrington Post Office | 353.9 | 390.2 | in 1967 |
39 |
| Wynyard Airport | 334.9 | 366.1 | in 1959 |
33 |
| Westbury (Birralee Road) | 284.7 | 303.1 | in 2002 |
27 |
| Bull Bay (Lauriston) | 212.0 | 212.4 | in 1991 |
23 |
| Risdon Vale (Poplar Road) | 181.8 | 206.9 | in 1968 |
23 |
| Blackmans Bay Treatment Plant | 184.2 | 205.2 | in 1984 |
20 |
| Tea Tree (The Point) | 196.4 | 206.2 | in 1994 |
20 |
Lowest Total Rainfall for at least 20 years for January to July |
|||
|---|---|---|---|
|
Total rainfall for January to July 2006 (mm) |
Most recent lower for January to July |
||
| Premaydena Hatchery | 313.2 | 230.7 | in 1950 |
| Bushy Park (Bushy Park Estates) | 194.0 | 182.8 | in 1967 |
| Mole Creek | 323.4 | 284.9 | in 1967 |
| Yolla (Sea View) | 506.6 | 491.0 | in 1967 |
| Taroona (Taroona Crescent) | 184.2 | 172.3 | in 1979 |
| Bothwell (Cluny) | 180.4 | 162.2 | in 1984 |
| Hobart (Ellerslie Road) | 208.2 | 176.8 | in 1984 |
| Hobart Airport | 157.4 | 147.6 | in 1984 |
| Victoria Valley (Glenrowan) | 314.8 | 306.2 | in 1984 |
| Mangalore (Mangalore Farm) | 167.8 | 96.2 | in 1984 |
Summary statistics for July 2006 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures for July (°C) |
Minimum temperatures for July (°C) |
Rainfall for July (mm) |
|||||||
| Mean for 2006 | Difference from normal | Highest for 2006 | Mean for 2006 | Difference from normal | Lowest for 2006 | Total for 2006 | Normal total | Ranking | |
| Hobart | 11.8 | +0.2 | 16.5 | 4.6 | +0.1 | 1.2 | 35 | 52 | normal |
| Launceston | 13.0 | +0.5 | 15.9 | 2.7 | +0.5 | -2.4 | 62 | 79 | normal |
| Burnie | 13.4 | +0.7 | 17.5 | 7.2 | +1.4 | 1.9 | 62 | 128 | low |
| Devonport |
13.1 | +0.4 | 16.3 | 5.2 | +0.6 | -0.5 | 53 | 99 | low |
| Swansea | 13.5 | +0.2 | 16.4 | 4.1 | +0.5 | -0.1 | 56 | 49 | normal |
| Strahan |
12.2 | -0.1 | 15.9 | 4.4 | -0.9 | -2.1 | 184 | 165 | high |
| Strathgordon |
8.9 | -0.1 | 12.6 | 2.5 | -0.5 | -2.0 | 264 | 270 | normal |
| King Island Airport | 12.8 | -0.3 | 15.2 | 7.6 | 0 | 3.6 | 82 | 114 | low |
| Flinders Island Airport | 13.5 | +0.2 | 15.7 | 6.9 | +0.6 | -1.7 | 74 | 85 | normal |
| Bicheno | 13.9 | -0.1 | 16.6 | 5.4 | -0.6 | 1.3 | 55 | 53 | normal |
| Bridport | 13.5 | +0.2 | 15.8 | 6.1 | +0.9 | 0.2 | 57 | ||
| Bull Bay | 12.1 | -0.4 | 17.0 | 5.0 | -1.0 | 0.8 | 50 | 57 | normal |
| Bushy Park | 12.0 | +0.9 | 16.9 | 1.4 | -0.2 | -3.9 | 21 | 50 | low |
| Campania | 12.7 | 17.6 | 3.4 | -2.5 | 22 | ||||
| Cape Bruny |
11.4 | +0.2 | 15.5 | 6.4 | +0.3 | 4.1 | 70 | 96 | low |
| Cape Grim |
12.4 | -0.2 | 15.4 | 7.8 | -0.6 | 2.8 | 100 | ||
| Cressy | 12.1 | 15.6 | 1.5 | -5.6 | 47 | ||||
| Dover | 11.9 | -0.5 | 16.1 | 3.0 | -0.8 | -0.9 | 85 | 87 | normal |
| Eddystone Point | 13.5 | +0.4 | 15.3 | 7.6 | +0.6 | 1.8 | 91 | 78 | normal |
| Fingal | 12.1 | -0.1 | 14.7 | 0.8 | +0.4 | -4.2 | 39 | 56 | normal |
| Friendly Beaches | 13.2 | 16.1 | 5.4 | 0.8 | 81 | ||||
| Geeveston | 11.5 | -0.6 | 15.2 | 2.0 | -0.3 | -3.2 | 88 | 92 | normal |
| Grove | 11.6 | -0.2 | 17.2 | 2.0 | 0 | -2.1 | 42 | 74 | low |
| Hartz Mountain | 5.9 | 9.9 | 1.2 | -2.8 | 120 | ||||
| Hobart Airport | 12.8 | +0.4 | 17.2 | 4.2 | +0.2 | -0.5 | 35 | 45 | normal |
| Hogan Island | 12.9 | 14.8 | 9.2 | 5.2 | 34 | ||||
| Lake Leake | 8.2 | -0.4 | 10.9 | 0.4 | +0.2 | -4.7 | 59 | 80 | normal |
| Lake St Clair | 7.6 | +0.3 | 11.1 | -0.7 | -0.8 | -5.7 | |||
| Launceston Airport | 12.0 | 15.4 | 2.5 | -3.6 | 56 | ||||
| Launceston Airport (old site) | 11.6 | +0.7 | 14.5 | 2.6 | +0.3 | -3.0 | 64 | 78 | normal |
| Liawenee | 5.7 | 8.8 | -1.9 | -6.3 | 63 | ||||
| Low Head | 12.8 | 15.7 | 6.9 | 2.0 | 38 | ||||
| Luncheon Hill | 10.9 | 15.0 | 5.2 | 1.0 | 178 | ||||
| Maatsuyker Island |
10.8 | -0.1 | 13.9 | 7.1 | +0.5 | 4.0 | 97 | 130 | low |
| Macquarie Island | 4.8 | -0.1 | 7.4 | 1.1 | -0.6 | -2.8 | 107 | 72 | very high |
| Maria Island | 12.3 | 15.4 | 7.0 | 2.9 | 31 | ||||
| Marrawah | 12.6 | +0.3 | 17.0 | 6.9 | +0.3 | 1.8 | 94 | 140 | low |
| Maydena | 10.3 | -0.5 | 14.9 | 1.8 | -0.6 | -2.0 | 82 | ||
| Melton Mowbray | 11.2 | 15.5 | 1.4 | -3.5 | 18 | ||||
| Moogara | 8.8 | +0.3 | 12.5 | 3.0 | +0.8 | 0.0 | 47 | 79 | very low |
| Mount Read | 4.1 | 10.0 | 0.1 | -4.3 | 361 | ||||
| Mount Wellington | 2.8 | +0.6 | 6.0 | -1.3 | +0.3 | -6.4 | 101 | 79 | normal |
| Orford | 12.6 | -0.5 | 15.7 | 4.1 | +0.6 | -1.0 | 53 | 60 | normal |
| Ouse | 11.5 | 16.6 | 0.6 | -5.3 | 38 | ||||
| Powranna | 11.7 | +0.2 | 15.0 | 2.5 | +0.5 | -3.2 | 52 | ||
| Ross | 11.7 | +0.5 | 14.6 | 1.2 | -0.3 | -4.3 | 36 | 42 | normal |
| Scamander | 13.7 | -0.1 | 16.3 | 5.2 | +0.8 | 1.0 | 74 | 56 | normal |
| Scotts Peak Dam | 9.1 | 14.2 | 2.8 | 0.1 | 179 | ||||
| Scottsdale | 12.1 | +0.1 | 15.0 | 4.7 | +1.0 | -2.5 | 115 | 124 | normal |
| Sheffield | 11.2 | 14.8 | 3.3 | -2.8 | 89 | ||||
| Smithton |
13.1 | 17.6 | 5.2 | -1.7 | 83 | ||||
| St Helens |
12.9 | 15.3 | 5.0 | -0.3 | 70 | ||||
| Swan Island | 12.7 | 14.3 | 8.2 | 3.7 | 68 | ||||
| Tarraleah |
8.3 | +0.1 | 12.6 | 0.3 | -0.1 | -3.2 | 118 | 117 | normal |
| Tasman Island | 10.4 | 13.8 | 6.4 | 2.4 | 56 | ||||
| Tunnack | 9.2 | 12.1 | 1.5 | -3.7 | 35 | ||||
| Warra | 8.1 | 11.7 | 2.3 | -1.1 | 182 | ||||
| Wynyard |
13.0 | +0.5 | 17.7 | 3.6 | +0.2 | -3.0 | 66 | 135 | low |
This statement has been prepared based on information available at noon on Tuesday 1 August 2006 . Although every effort has been made to check them, it is possible that results will change as new information becomes available.
"Normals" are based on all available years of record, which vary widely from site to site . Sites without normals shown do no have sufficient record for them to be calculated reliably.
The "Ranking" indicates about where rainfall this time ranks in the climate record for the site.
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