Tasmania in April 2014: a warm start but a cool finish

April 2014 started very warm in Tasmania, with several sites (including Hobart) having their highest April temperature on record. Mild weather dominated the first half of the month (although the 11th and 12th were cool in the east), but the second half saw plenty of cold weather. The 21st was particularly unusual: in many areas very cold daytime temperatures gave way to a mild night. Cold fronts brought some snow to the higher peaks by the 26th. There were a number of rainfall events, but whilst the north and west caught most of the rain, totals on the lower East Coast were generally below 30 mm.

  • Record hot day on the 1st
  • Cold weather developed during the month
  • Warm overall
  • A few wet days
  • Average monthly rain in most areas

Record hot start to the month

The 1st saw temperatures in the high 20s or even low 30s in many parts of Tasmania, as an approaching cold front dragged warm air off the mainland and across the State. Several sites, including Hobart, had their highest April temperature on record. The warm air persisted through the following night, ensuring a few locations had their warmest April night (highest daily minimum temperature) on record.

Cold weather developing during the month

After the very warm start, temperatures continued generally mild, but not especially hot. The 11th and 12th were quite cool in the east and inland, with temperatures struggling to reach double digits at many locations. Cold weather came to the fore on the 21st, with Liawenee dropping to -6.9 °C that morning. In the north it was mostly below 10 °C at 3 pm on the 21st, but warmer air arrived in the afternoon and pushed temperatures into the teens. Cold fronts on the 24th and 26th brought cold weather to most of the State, with dustings of snow on the higher peaks. Lake St Clair's maximum of 4.6 °C on the 26th was an equal-record cold April day for that site.

Warm overall

Averaged across the month, daytime maximum temperatures were generally above average, although mostly by less than a degree. Overnight minimum temperatures were also above average, also by less than a degree.

A few wet days

Locally moderate to heavy rainfalls occurred several times during the month. Cold fronts on the 2nd and 9th brought falls to the west, and on the 11th a front interacted with a low to the north to bring rain across the State with moderate falls around Flinders Island. A cold front crossing on the 22nd triggered thunderstorms about the north and northeast: Mount Victoria registered 70.2 mm in the 24 hours to 9 am on the 22nd, Targa 56.2 mm and Mount Barrow 54.0 mm. Westerly winds and fronts brought further rain to the west and north from the 24th, with a front crossing on the 29th bringing moderate falls across the State, with totals around 30 mm through the north and west.

Average monthly rain in most areas

For most parts of Tasmania, rainfall was close to the long-term average for April. Several wet days ensured the Central North, Northern Midlands and Bass Strait islands were wetter than usual, but the East Coast was generally below average. Totals ranged from 17.6 mm at Grindstone Point northeast of Triabunna to 296.4 mm at Mount Read in the western highlands.

Rainfall for the first four months of 2014 has been below average in most areas of Tasmania, with the East Coast particularly dry.

Record warm April day for Hobart

Hobart reached 31.0 °C on the 1st, the hottest April day recorded at the site. The minimum temperature in the 24 hours to 9 am on the 2nd was 18.1 °C, close to the record high 18.6 °C to the 2nd in 1959. The "accounting period" for minimum temperatures means this was not a record, but the night was warm: the temperatures at midnight (23.2 °C), 3 am (23.9 °C) and 6 am (25.5 °C) were all records for those times of day in April.

Like most of the State, Hobart had plenty of warm temperatures in the first half of the month but some cool ones in the second half. The coldest day was the 24th when the temperature peaked at just 12.8 °C, and the coldest temperature was 4.8 C on the morning of the 28th. Hobart's mean daily maximum temperature for the month was 18.5 °C, which is 1.0 °C above the long-term average. Hobart's mean daily minimum temperature of 9.0 °C was 0.2 °C above the long-term average.

Hobart's rain was a little below normal for April, with rain on 11 days totalling to 42 mm. So far this year the city has had 107 mm, well below the long-term January-to-April average of 184 mm, and about the same as received over those four months last year.

 

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Extremes in April 2014
Hottest day 31.6 °C at Bushy Park (Bushy Park Estates) and Campania (Kincora) on the 1st
Warmest days on average 19.5 °C at Flinders Island Airport
Coolest days on average 8.0 °C at Mount Wellington
Coldest day 0.1 °C at Mount Wellington on the 26th
Coldest night -6.9 °C at Liawenee on the 21st
Coolest nights on average 2.3 °C at Liawenee
Warmest nights on average 12.5 °C at Swan Island
Warmest night 19.6 °C at Flinders Island Airport on the 2nd
Warmest on average overall 15.5 °C at Swan Island
Coolest on average overall 5.2 °C at Mount Wellington
Wettest overall 296.4 mm at Mount Read
Driest overall 17.6 mm at Grindstone Point
Wettest day 70.2 mm at Mount Victoria (Una Plain) on the 22nd
Highest wind gust 139 km/h at Cape Grim BAPS (Comparison) on the 24th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Highest total April rainfall for at least 20 years
Total rainfall
for April 2014 (mm)
Most recent April
at least this wet
Years since
wetter
Average for
April
Lady Barron (Franklin Parade) 96.4* 108.8 in 1992* 20 62.7

* note: the final total may be higher, as some days are missing. Also, there are gaps in the historical record at this site, so it is possible a higher value from the past has gone unreported.




Record highest April temperature
Highest temperature
in April 2014 (°C)
Previous warmest
for April
Years of
record
Average for
April
Hobart (Ellerslie Road) 31.0 on the 1st 30.6 on the 1st in 1941 127 17.3
Bushy Park (Bushy Park Estates) 31.6 on the 1st 30.6 on the 1st in 2005 54 18.0
Fingal (Legge Street) 29.4 on the 1st 28.7 on the 2nd in 2005 29 18.3
Geeveston (Cemetery Road) 29.8 on the 1st 29.5 on the 4th in 1992 28 17.2
Lake Leake (Elizabeth River) 24.1 on the 1st 23.4 on the 1st in 2005 25 14.2
Lake St Clair National Park 24.6 on the 1st 23.5 on the 2nd in 2005 24 13.0
Cape Grim BAPS (Comparison) 25.4 on the 1st 24.0 on the 2nd in 2005 23 16.5
Maydena Post Office 30.1 on the 1st 28.5 on the 2nd in 2005 22 15.9
Strahan Aerodrome 27.8 on the 1st 27.6 on the 2nd in 2005 22 16.7



Record lowest April daily maximum temperature
Lowest daily maximum
temperature
in April 2014 (°C)
Previous coolest
for April
Years of
record
Average for
April
Lake St Clair National Park 4.6 on the 26th = 4.6 on the 28th in 2008 24 13.0




Record highest April daily minimum temperature
Highest daily minimum
temperature
in April 2014 (°C)
Previous warmest
for April
Years of
record
Average for
April
Orford (Aubin Court) 18.5 on the 2nd 18.1 on the 5th in 1981 46 8.4
Cape Grim BAPS (Comparison) 17.0 on the 1st = 17.0 on the 29th in 2000 23 11.4



Macquarie Island, 1500 km southeast of Hobart but technically part of Tasmania, also set a new record for April mean daily maximum temperature, and equalled the April record for mean daily minimum and mean temperature.

Record highest April mean daily maximum temperature
Mean daily maximum
temperature
for April 2014 (°C)
Previous warmest
for April
Years of
record
Average for
April
Macquarie Island 8.1 8.0 in 1993 66 7.0
Record highest April mean daily minimum temperature
Mean daily minimum
temperature
for April 2014 (°C)
Previous warmest
for April
Years of
record
Average for
April
Macquarie Island 5.2 = 5.2 in 2006 66 3.7
Record highest April mean temperature
Mean daily
temperature
for April 2014 (°C)
Previous warmest
for April
Years of
record
Average for
April
Macquarie Island 6.6 = 6.6 in 1980 66 5.3



Summary statistics for April 2014
Maximum temperatures
for April
(°C)
Minimum temperatures
for April
(°C)
Rainfall
for April
(millimetres)
Mean for
April
2014
Diff
from
average
Highest for
April
2014
Mean for
April
2014
Diff
from
average
Lowest for
April
2014
Total for
April
2014
Average
for
April
Rank of
April
2014
Fraction of
April
average
Northern (district 91)
Bridport (Sea View Villas) 18.5 +0.4 22.0 1st 9.4 -0.1 2.2 27th 88.5 61.9 high 143%
Burnie (Round Hill) 18.7 +1.0 23.5 1st 11.2 +1.2 5.0 27th 72.0 74.3 average 97%
Burnie NTC AWS 17.2   24.9 1st 11.8   5.5 27th
Cape Grim 17.2   25.3 1st 11.6   6.6 27th 83.2
Cape Grim BAPS (Comparison) 17.6 +1.1 25.4 1st 11.7 +0.3 6.5 27th 78.8 67.6 average 117%
Cressy Research Station 17.9 -0.3 25.3 1st 5.3 -0.2 -3.5 25th 69.6 44.8 high 155%
Devonport Airport 18.3 +0.6 22.3 1st 9.1 +0.4 1.6 27th 54.2 60.7 average 89%
Launceston (Ti Tree Bend) 19.1 +0.2 26.3 1st 7.1 -0.4 -0.5 25th 71.4 52.7 high 135%
Launceston Airport 18.0   26.4 1st 6.4   -0.7 25th 63.8 48.5 average 132%
Low Head 18.3 +0.6 22.9 1st 10.9 -0.2 4.6 27th 81.0 57.1 average 142%
Luncheon Hill (Forestry) 16.0 +0.4 25.1 1st 8.5 +0.4 3.0 27th
Marrawah 17.4 +0.6 23.0 1st 10.6 +0.3 5.0 27th
Scottsdale (West Minstone Road) 17.4 -0.6 24.2 1st 7.9 0.0 0.4 25th 114.2 80.5 high 142%
Sheffield School Farm 16.0 -0.5 22.2 1st 7.4 +0.4 0.3 27th 110.0 69.2 v high 159%
Smithton Aerodrome 18.3 +0.5 25.4 1st 8.2 +0.5 -0.8 27th 84.8 61.0 high 139%
Wynyard Airport 18.1 +0.6 24.7 1st 8.0 +0.8 -0.7 27th 80.8 73.4 average 110%
East Coast (district 92)
Bicheno (Council Depot) 19.0 +0.1 25.5 1st 10.7 +0.4 5.5 28th 29.7 59.4 low 50%
Fingal (Legge Street) 18.1 -0.2 29.4 1st 5.0 -0.4 -4.5 25th 25.2 51.7 average 49%
Friendly Beaches 19.4 +0.7 30.4 1st 9.7 -0.1 3.5 28th 28.0 51.5 average 54%
Lake Leake (Elizabeth River) 14.2 0.0 24.1 1st 3.5 -0.7 -4.0 25th 52.2 69.1 average 76%
Larapuna (Eddystone Point) 18.6 +0.4 23.9 2nd 11.9 +0.4 3.6 25th 58.6 66.2 average 89%
Maria Island (Point Lesueur) 18.2   27.5 1st 11.7   6.5 28th 24.4 41.2 low 59%
Orford (Aubin Court) 18.8 +0.4 29.2 1st 9.2 +0.8 3.3 27th 22.0 57.0 low 39%
Spring Bay NTC AWS 18.3   28.0 1st 10.7   5.2 28th
St Helens Aerodrome 18.6 +0.2 28.4 1st 9.3 -0.3 2.3 25th 71.6 59.2 high 121%
Swan Island 18.4 +0.2 24.5 1st 12.5 -0.3 6.5 25th 69.6 51.0 high 136%
Swansea (Francis Street) 19.1   31.0 1st 8.6   2.4 28th 30.2
Midlands (district 93)
Ross (The Boulevards) 17.6 +0.1 26.9 1st 5.1 -0.5 -3.1 25th 45.4 36.5 average 124%
Southeast (district 94)
Bull Bay (Lauriston) 18.0 +0.7 26.0 1st 9.8 +0.2 4.0 27th 34.8 48.7 average 71%
Campania (Kincora) 19.0 0.0 31.6 1st 7.7 +0.4 1.0 21st 27.0 35.1 average 77%
Cape Bruny (Cape Bruny) 17.0 +0.6 24.9 1st 10.3 +0.4 5.4 27th 57.0 55.0 average 104%
Cape Bruny Lighthouse 16.7 +1.2 24.8 1st 10.1 +0.5 5.3 25th 59.4 79.6 average 75%
Dennes Point 17.8   26.0 1st 10.3   6.2 21st 24.8
Dover 17.2 +0.4 25.3 1st 7.3 +0.2 1.2 28th 54.0 67.1 average 80%
Dunalley (Stroud Point) 18.4   26.1 1st 11.2   5.8 27th 25.4
Geeveston (Cemetery Road) 17.9 +0.7 29.8 1st 6.3 0.0 0.6 28th 73.6 64.7 average 114%
Grove (Research Station) 17.8   29.8 1st 5.8   0.0 21st 55.8 50.4 average 111%
Hobart (Ellerslie Road) 18.3 +1.0 31.0 1st 9.7 +0.7 4.8 28th 42.0 51.1 average 82%
Hobart Airport 18.5 +0.4 28.1 1st 9.0 +0.2 3.3 28th 23.2 42.2 average 55%
Maatsuyker Island Lighthouse 15.0 +0.5 24.3 1st 10.4 +0.9 5.6 27th 82.8 108.3 average 76%
Melton Mowbray (North Stockman) 17.5 +0.2 30.0 1st 5.4 -0.4 -1.3 28th 44.0 29.8 high 148%
Mount Wellington 8.0 -0.4 19.8 1st 2.5 +0.3 -2.9 27th 90.8 88.9 average 102%
Tasman Island 15.8 +0.9 24.4 1st 10.5 +0.7 4.4 27th 69.2 68.7 average 101%
Tunnack Fire Station 15.4 +0.1 24.8 1st 5.0 -0.2 -3.2 21st 40.4 44.8 average 90%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 18.2 +0.2 31.6 1st 5.8 -0.4 -0.3 25th 38.0 46.2 average 82%
Maydena Post Office 16.3 +0.4 30.1 1st 5.2 -0.2 0.9 25th 88.2 82.9 average 106%
Ouse Fire Station 17.7 -0.6 30.5 1st 5.2 +0.3 -1.5 28th 46.8 31.4 high 149%
Central Plateau (district 96)
Butlers Gorge 13.3 +0.2 24.6 1st 3.7 +0.3 -3.7 28th 128.2 143.9 average 89%
Lake St Clair National Park 13.2 +0.2 24.6 1st 3.3 +0.4 -2.3 28th 156.4 137.3 average 114%
Liawenee 11.2 -1.0 22.4 1st 2.3 +0.7 -6.9 21st 80.8 70.9 high 114%
West Coast (district 97)
Cape Sorell 17.3 +1.8 23.2 1st 11.0 +0.7 5.8 28th 80.2 109.0 low 74%
Hartz Mountain (Keoghs Pimple) 11.3 +0.3 24.3 1st 4.9 +0.4 -0.5 27th 76.6 70.2 average 109%
Low Rocky Point 16.6   24.5 1st 9.9   5.7 28th 128.8 111.2 average 116%
Mount Read 9.1 +0.2 19.0 1st 3.7 +0.3 -1.6 27th 296.4 283.7 average 104%
Scotts Peak Dam 15.6 +1.0 29.1 1st 6.3 -0.4 2.5 28th 140.0 128.9 average 109%
Strahan Aerodrome 17.6 +0.9 27.8 1st 8.8 +0.4 0.7 28th 147.0 115.3 high 127%
Strathgordon Village 14.8 +0.6 26.2 1st 7.2 +0.3 1.9 28th 204.0 201.6 average 101%
Warra 13.6   25.6 1st 5.4   0.0 21st 159.6 138.3 high 115%
King Island (district 98)
King Island Airport 18.5 +0.8 31.1 1st 11.1 +0.6 4.5 27th 84.0 57.7 high 146%
Flinders Island (district 99)
Flinders Island Airport 19.5 +0.8 29.3 1st 11.1 +0.4 1.8 28th 83.2 59.1 high 141%
Antarctica and Macquarie Island (district 300)
Macquarie Island 8.1 +1.1 9.7 2nd 5.2 +1.5 -1.1 12th 69.0 93.2 low 74%

Notes

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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 9 am on Thursday 1 May 2014. 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 decile ranking (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.

Further information

Media
(03) 9669 4057
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