Tag Archives: season

Droughty Spring 2012

Posted in Manilla NSW, Season Weather by

Weather log Spring 2012.Temperatures rose as normal this spring, apart from a quick rise in the last week and a cold spell in the second week of October. In the cold spell, one day failed to reach 14°! Rain fell nearly every week, but never more than 15 mm in a day.

After last spring’s record-breaking 432 mm rainfall, this spring was about as droughty as spring 2002. The rainfall total, 81 mm, was a bit higher than in spring 2002 (66 mm) and the percent of cloudy mornings higher (25% vs. 19%), but the dew point (humidity) was much lower (3.7° vs. 5.4°) and the daily temperature range was higher (17.9° vs. 17.1°).
Showers in the last days lifted the total rainfall (81 mm) to the 10th percentile for springs.Climate spring 2012.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

Winter 2012: very dry air

Posted in Manilla NSW, Season Weather by

Weather log winter 2012

There were two spells of cloudy very wet weather with warm nights, one in the first week of June and one in the second week of July. By contrast, the first week of August was sunny, but with cool days and very cold nights.

Early valley fogs were common in June and July. The total number of frosts (45) was normal, as was the number of severe frosts below minus two degrees (8).
Like last winter, this winter had normal air temperature. Unlike last winter, rainfall was not low, nor the skies extremely cloudy.
Humidity, however, was even lower, marked by a mean early-morning Dew Point of 0.7° (2.2° lower than normal), a new winter record for dry air.
Subsoil temperature was a new winter record high value: 17.1°.
There were 16 rain days, which is just below normal. The winter total of 148.2 mm is in the 66th percentile.Climate winter 2012

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

In 2012, Autumn Weather Normal Again

Posted in Manilla NSW, Season Weather by

Weather log autumn 2012.
After the cold, wet summer, autumn weather was normal, like last year. Days were warm in early April, and nights cold in mid-May. Rain was rather light: the four days with more than 10 mm of rain came in late April.
Average air temperatures were close to normal, but the early morning Dew Point was 2.1 degrees down, showing very dry air, as in autumn 2008. The subsoil was very warm.
While the percentage of mornings with more than 4/8 cloud (39%) was lower than in the last two autumns, it is still nearly twice that of autumns in the previous decade, which averaged just 25%.
Rain fell on 16 days (normally 12), but the total rainfall of 87.4 mm is only on the 35th percentile for autumn. Like autumns in 2009 and 2010, it is about 45 mm below the average (133 mm). Nevertheless, an enormous amount of rain fell in spring, summer, and autumn taken together: 852 mm! Only 1956 and 1890 had more rain in those three seasons: 1012 mm and 939 mm.Climate autumn 2012

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

2011-12 Summer Cold and Wet

Posted in Manilla NSW, Season Weather by

Weather log summer 2011-12.In the whole of this summer, only 3 days went over 35° (usually 23) and only 5 nights went over 20° (usually 19).

The smoothed curves of temperature reached up as high as normal only twice. In early January both days and nights were normal. Later, with persistent rain around the 1st of February, nights warmed to normal, but days were extremely cold.
All the mean daily temperatures were the lowest in 13 summers: maximum 28.9°, mean 22.2°, and minimum 15.4°. Summer ’07-’08 had been just slightly warmer.
Daily temperature range this summer (13.5°) was very narrow, as in ’07-’08 and ’10-’11; all wet summers with very cloudy skies. Strangely, this cloudy wet summer had very low humidity, with morning Dew Point (12.7°) the lowest on this record.
While this was a very wet summer, at 333 mm, it was only the 19th wettest (86th percentile), and not much wetter than summers 4, 6, and 8 years ago.Climate summer 2011-12.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

Spring 2011 the wettest by far

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Weather log spring 2011This spring’s rainfall of 431.7 mm far exceeded that of any other spring in the record from 1883. Winter had been very dry, with only 55 mm. While there was a lot of rain in September (91.4 mm) and October (97.4 mm), much more fell in November (242.9 mm), mainly in the second half.
The only other springs with more than 300 mm were in two small groups: 1916 (326 mm) and 1917 (327 mm); and 1949 (330 mm), 1950 (379 mm), 1954 (319 mm) and 1955 (321 mm).
Apart from the extreme rainfall, all other weather readings this spring were normal. By contrast, spring 2009 had been warm and sunny, and spring 2010, cool and cloudy.
During the season, there were two very cool spells, early in September and very early in October. They were separated by a sunny warm spell with very low humidity: it had people changing into summer gear (then back again!). By mid-November, both days and nights were very warm, but then returned to normal.Climate spring 2011

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.