Tag Archives: cool

Cool, cloudy, wet October 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log October 2010 Manilla

 

October days were very cool: no days went above 30°, when usually seven days do, and the 16th, at 14.2°, was 13° below normal. The following night (the only frost) was 10° below normal. A day earlier, overcast skies brought an extremely narrow daily temperature range (2.3°) on the 15th.
Rain fell on 8 days. The highest reading was 20.4 mm on the 4th.

Comparing October monthsClimate October 2010 Manilla

 

The mean daily maximum temperature (24.2°) was the lowest for October on this 12-year record. The mean daily mean temperature (17.7°) was low, but the mean daily minimum temperature (11.2°) was normal. The mean daily temperature range (13.1°) was a record low value.
Mean subsoil temperature was remarkably low: 17.4° against a 12-year October mean of 19.4°. The month ended with subsoil temperature (then 18.8°) trailing 22 days later than its usual date.
There were more cloudy mornings (58%) than in any October on this record. The mean early morning Dew Point (9.6°) was also high.
The rainfall of 85.4 mm is in the 80th percentile for October, far above the long-term average of 58 mm. Totals for groups of months up to six months are now all above the median, as is the thirty-year total.

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.

Rainy, very cloudy September 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log September 2010 Manilla

 

Like August, September had no extremes. Many days had normal temperatures, especially late in the month, and many others were cool. Nights varied, with two frosts, but most were warm.
Rain fell on 11 days, a September record number for the decade. The highest reading was 22.2 mm on the 10th. A reading of 12.6 mm was due to a brief afternoon shower on the 27th.

Comparing September monthsClimate September 2010 Manilla

 

The mean daily temperature (14.9°) was normal, but days (21.5°) were only 13.3° warmer than nights (8.2°). Usually, September has the highest daily temperature range of the year: 16.9°.
Along with cool days and warm nights, there were more cloudy mornings (57%) than in any September on this record. Very high humidity made the mean early morning Dew Point (7.3°) nearly two degrees higher than normal.
The rainfall of 59.3 mm is in the 76th percentile for September, well above the long-term average of 41 mm. Totals for two, three, and four months are now all above the median. The thirty-year total has now reached the median value, after three years below it.

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.

Cool days in August 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log August 2010 Manilla

August had no extremes. Only four days exceeded 20° (usually thirteen days), and only ten nights were frosty (usually fifteen). The subsoil temperature failed to rise during the month, ending at 13.5°, which is 1.0° cooler than normal.

Rain fell on 13 days, an August record for the decade, but the highest reading was only 10 mm.

Comparing August monthsClimate August 2010 Manilla

The mean daily maximum temperature (26.5°) was the lowest for November on this 12-year record. The mean daily temperature range (12.4°) was (with November 2008) a record low value.

Mean subsoil temperature (20.4°) was the lowest since November 1999. The month ended with subsoil temperature (then 22.2°) trailing only 10 days later than its usual date. It had begun the month 22 days late.
There were more cloudy mornings (53%) than in any November on this record.
The rainfall of 105.4 mm is in the 84th percentile for November, far above the long-term average of 67 mm. Totals for groups of months up to 15 months are now all above the median, as is the thirty-year total.

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.

October 2009 began cool and dry

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log October 2009

The first two weeks of October were cool – as cool as September, and no warmer than late August. There was little rain, low humidity and strong winds. The sub-soil temperature (at 750 mm) also remained low, not reaching 18° until the 18th, two weeks later than usual. Some cotton plantings suffered.
A warm spell came on the 20th, with the maximum on the 23rd (35.4°) being 8° above normal. By contrast, a rainy day on the 26th reached only 18.1°, more than 9° below normal. That day was the first in 33 days to have more than 5 mm of rain. Ten rain days (usually 7) brought 47.4 mm for the month.
Seven days began with a brown dust haze, adding to one in July, three in August, and seven in September.

 Comparing October months

Climate October 2009

Mean temperatures were close to normal. The mean humidity (early morning Dew Point: 4.3°) was low: lower than in 2007, but higher than in 2002 (3.3°). The percentage of cloudy mornings was normal.
The rainfall total, 47 mm, is in the 39th percentile for October, just 6 mm below the median (53 mm). Despite early worries, most rainfall totals improved. The only serious shortage affects the 6-month total. At 164 mm, it is in the 7th percentile.
Totals for periods longer than nine months are normal: the lowest is the ten-year total, which is in the 21st percentile. From November 1999 Manilla has had 6133 mm of rain, against the median 6393 mm. That is a shortfall of only 26 mm per year.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperature and other data are from 3 Monash Street, Manilla.

 

November 2008 cool and very wet

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log November 2008

This November was like last November, but wetter. Again, a sunny dry week separated times of overcast rainy days.
Sudden cold changes, which had come twice in October, came again on the 8th, 17th, and 22nd. The last was severe. The maximum on the 23rd was nearly 12° below normal. The temperature that day did not rise above 15° until 5 pm!
Steady soaking rain on the 3rd amounted to 44 mm. A long spell of six rain days from the 17th brought another 48 mm. It began as persistent drizzle but included storms (one with 15 mm size hailstones). These days had low cloud and high humidity. Extremely low humidity (Dew Point 0.1°) came with the cold change, but dew points rose to a peak of 17.4° on the 29th. Over 26 mm of rain fell that day.
Manilla missed two heavy rainstorms of 80 mm each that swept through Tamworth at 10 am and 10 pm on the 28th. There was flooding at Tamworth, at Carroll Gap, and on the plain east of Gunnedah. The Namoi River at Manilla also rose due to rain near Bendemeer.

 Comparing November months

Climate November 2008

Days were the coolest in ten Novembers. However, the mean daily minimum was high, making the daily temperature range (12.4°) even narrower than last November. This agrees with high values for cloudiness and dew point.

The rainfall total, 132 mm, is far above the long-term November average of 67 mm, but that is now common. Five of the last ten Novembers had 110 mm or more. This month and November 2000 were equal ninth wettest on record, and November 2001 (133 mm) eighth wettest.
The rainfall totals for groups of months get higher and higher. The total for 2 months (October and November) is in the 94th percentile, 3 months in the 92nd, 4 months in the 86th, 5 months in the 80th, and 6 months in the 81st percentile. Totals are now above the median for periods up to 72 months with only one exception: that for 9 months is in the 47th percentile. The six-year total rainfall is now 100 mm more than in six average years.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Dew point values before August 2005 are from Tamworth Airport 6 am data supplied by the Bureau of Meteorology. Temperature and other data are from 3 Monash Street, Manilla.