Tag Archives: NSW

Rain came back in November 2013

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log November 2013

By November the 11th, there had been only 70 mm of rain since the deluge in June. The humidity had been getting lower by the month. From that day, rain and high humidity returned. Days and nights became cooler than normal, with more cloudy skies. Most of the seven wet days were showery, but the 29th had steady rain.

Comparing November monthsClimate November 2013.

The weather change on the 11th returned most monthly average values closer to normal. However, despite the rain, this was still an “Arid” month, with a record low November mean morning dew point, a wide daily temperature range, and few cloudy mornings. The mean subsoil temperature (23.8°) was 1.9° above normal, exceeded (in the 21st century) only by 24.7° in November 2002.
The total rainfall of 95.6 mm was in the 80th percentile, well above the average of 67 mm. This disposes of all serious shortages in rainfall totals. The worst figure now is the 5-month total of 166 mm, which is 56 mm below normal (19th percentile).

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.

Extremely Arid October 2013

Posted in Manilla NSW, Monthly weather by

October’s climate was even more desert-like than this September or October last year. Afternoon humidity (normally 30%) was only 13.1%, which is the lowest value in ANY month in the last eight years. The early morning dew point of 0.5° was the lowest October value this century, and 7.8° below normal, a record anomaly value for any month. This very dry air often came with strong winds. Most of north-west NSW was affected.

The daily weather logWeather log October 2013.

The second of two warm spells brought weekly temperatures three degrees above normal. Each warm spell ended with a night above 20°. Three mornings from the 25th were exceptionally dry, having dew points of minus 7.2°, minus 8.0°, and minus 7.6°. (The record: minus 9.3° on 17/5/11.)
There were three rain days: the 2nd with 13.8 mm, and the 18th and 30th with 0.6 mm each.

Comparing October monthsClimate October 2013.

October’s days were not quite as warm as in 2007. Dryness was marked by low rainfall, little cloud, and wide daily temperature range, but most remarkably by the record low dew point and relative humidity.
At 21.0°, the subsoil was warmer than in any other October month. It was 1.6° above normal.
The total rainfall of 15.0 mm was in only the 12th percentile, far below the average of 58 mm. The three and four month rainfall totals (41 mm; 71 mm) are now severe shortages, in the 3rd and 4th percentiles.

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.

Desert-like September 2013

Posted in Manilla NSW, Monthly weather by

September was an exceptionally arid month: like the Sahara Desert!

The daily weather logWeather log September 2013

Most days were warmer than normal, with the first 30-degree day of spring coming two weeks early, on Sunday the 8th. Weekly average temperatures showed two warm spells three degrees above normal. Half the mornings had completely blue skies. The air was extremely dry: the dew point early on the 12th was 6.3 degrees below zero, and all the afternoons of the final week had relative humidity below 10%.
Briefly, from the 16th to the 18th, the weather was cooler and more humid, with 19.4 mm of rain.

Comparing September monthsClimate September 2013.

Nearly all the monthly weather values were exceptional. As noted on the graph, they were record September values (from 1999): highest maximum and mean temperatures, widest daily temperature range, lowest dew point and fewest cloudy mornings. (The September daily minimum temperature had been higher: 9.7° in 2002, and 8.2° in 2010.)
The total rainfall of 19.4 mm is half the average of 41.2 mm. It is in the 28th percentile. The two and three month totals are now serious shortages, in the 6th percentile. The 24 month total (1508 mm) and 36 month total (2231 mm) are still very high.

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.

Dry, Warm August 2013

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log August 2013.

The month had no extremes of heat or cold. Frosts (10) were almost as rare as in August 2011 (9). Some overcast skies came with 5.8 mm of rain on the 17th then, from the 25th, there were five cloudless mornings bringing very warm weather. Altogether, only three days had rain (usually 6).

Comparing August monthsClimate August 2013.

After July having temperatures two degrees above normal, this month’s maximum was only one degree up, and the minimum just on normal. While the air was not as extremely dry as it was last August, the morning dew point was still very low: 2.7 degrees below normal. In contrast, the subsoil temperature remained extremely high, at 16.6°, 2.7° above normal.
Total rainfall is far below the average of 39.5 mm. At 6.4 mm, it is in the 9th percentile: since 1888, only 10 August months have been drier. In totals for two months and more, there is no serious shortage of rainfall, although nearly all totals up to 18 months are now below the median. Totals for all longer periods (up to 360 months) are above the median.

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.

Extremely warm July 2013

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log July 2013.

There were three warm spells and no cold spells in July. Fourteen days went over 20 degrees, instead of the usual four. There were only eleven frosts, the fewest in 15 July months (usually 17). In five rain days, two high rainfall figures came on the 20th (19.2mm) and the 21st (9.6mm).

Comparing July monthsClimate July 2013.

After June’s extreme cloudiness and rain, July was very near to normal in everything but temperature. The average values of daily maximum, daily minimum, and daily mean temperature were all just under two degrees above normal. The daily maximum and daily mean are 15-year record high values, but the daily minimum had been higher in July 2010: 2.4 degrees above normal.
(Note: My “normal” is the ten year average from March 1999. For the official normal period 1961-1990 there are no Manilla figures (except rainfall). This month’s very high temperatures would be (perhaps) just over 2 degrees above the 1961-1990 average.)
Rainfall, at 29.8 mm, is in the 43rd percentile, a bit below the average (41.1mm). Rainfall totals for 24 months and more are very high. This accounts for the rare appearance of water flowing locally in Greenhatch Creek.

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.