Tag Archives: wet

Rain storm in October 2008

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log October 2008

October began fine and very warm, with 32° days and 17° nights. Wet days from the 4th to the 6th brought warm nights at first, followed by a very cold day (19.2°) and night (4.4°). From the 10th to the 21st normal temperatures prevailed. Then a strong southerly made days and nights 10° colder again. The night of the 23rd was 9.0° cooler than normal. The month was frost-free, however.
Calmer, sunny weather returned, with the last day the hottest, at 34.5°.
The seventh rain day of the month brought 52 mm. Rain drove in horizontally during a south-westerly gale after 5pm on Tuesday the fourteenth. This was reported, with a photo of broken trees, in the “Manilla Express” (21/10/08). The gale was a gustfront fanning out from the downburst of a thunderstorm. Storm gustfront gales in this area often blow from the south-west. Within minutes, cold air is dumped on the ground from a height of more than 5 kilometres. The downburst brings the strong south-west winds found there down to ground level.

 Comparing October months

Climate October 2008

Unlike last October, which was remarkably warm and had a high daily temperature range, this October had temperatures near normal, with rather warm nights bringing a lower daily temperature range. Both humidity and cloudiness were slightly above normal.

Manilla has had a lot of rain.
The high rainfall total, 97 mm, is on the 83rd percentile for October. Only 21 recorded Octobers were wetter, including October 1999 (104mm) and 2000 (110 mm). Most rainfall totals for several months together are now above the median (the 50th percentile). The total for 2 months (September and October) is in the 82nd percentile, 3 months in the 71st, 4 months in the 60th, 5 months in the 63rd, and 6 months in the 50th percentile. Rainfall totals for longer periods, up to 60 months, are above the median with only two exceptions: the totals for 9 months (42nd percentile) and for 30 months (35th percentile).

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.

 

Summer 2007-08 was very cool,cloudy and wet

Posted in Manilla NSW, Season Weather by

Weather log summer 2007-08

The daily weather log

Most summers recently have had one or two days over 40° and nights over 25°. Not this summer! The hottest day reached only 36.3°, and the warmest night 22.1°. Only 37 days went over 30°: half the usual number. Air conditioners may not have had much use!
The 7-day temperature curves show warm spells in the second week of December, and in the second and fourth weeks of January. Temperatures were then normal. The rest of the time they were well below normal.
Daily minimum temperatures were not so low. This made the daily temperature range small, especially during humid spells.
Humid weather (dew point 16°) came with rain in early December, mid-January, and early February. The air was rather dry (dew point 10°) at New Year and in the very last days of summer.
There were 33 rain days (normally 21). The longest dry spells were eight days from the 22nd of January, and nine days from the 20th of February. February the 6th was the wettest day, with 32 mm, and the summer total was high, at 311 mm.
It was a very cloudy summer. More than half the mornings were cloudy (over 4 octas) and many (18) were completely overcast. Only 13 mornings had a sky clear of cloud.

Comparing summer seasons

Mean daily maximum temperature and mean temperature this summer were the lowest in the nine year record. Mean daily minimum temperature was lower in 1999-2000, which has the next coolest mean temperature. While the cool summer of 1999-2000 had a large daily temperature range (15.6°) related to low rainfall, this summer had a very small daily temperature range (13.2°) related to high rainfall and cloud.
The mean daily maximum this summer (29.7°) is 3.3° below the nine-year average. The fall of over 4° from the very high maxima of the last two summers is dramatic.
Humidity was normal for the time of year.
For rainfall, this short record begins with the 15th driest summer (99-00, 125 mm) and includes the 19th wettest summer (05-06, 319 mm). This summer’s rainfall of 311 mm is 84 mm above the long-term summer average of 227 mm. It is on the 83rd percentile.
At 53% cloudy mornings, this summer season is by far the cloudiest of any season in the nine-year record. No others exceeded 41%.

Climate for summer 2007-08

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. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

Cold, cloudy wet February 2008

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log February 2008

Reading the 7-day mean temperatures, the month started near normal, but cooled to unusually low figures by the end of the first week – five degrees down! For a week from the 19th it was only two degrees below normal, then back to four degrees down at the end of the month.
Days were particularly cool, running about 29° instead of 33°.  However, the coolest days were not extreme.
The warmest day, Friday the 22nd, reached only 35.5°. The following morning was the warmest at 26.1°.
Dry air arrived from the south on the 24th, with a Dew Point of only 5.8°.
Rain fell frequently until the 19th, with the 6th being the wettest day (32 mm). The 29th was also very wet. There were nine rain days, totalling 115.6 mm. This is nearly twice the long-term February average of 66 mm.
Very few mornings were “Fine” (with no cloud).

 Comparing February months

Climate February 2008

This was by far the coldest of the last nine Februaries, by day and by night. The mean daily maximum of 28.8°, the mean daily mean of 22.2°, and the mean daily minimum of 15.6° were all well below average, by 3.7°, 3.1°, and 2.5° respectively.
The contrast with the last two years is stark: the days in February 2007 were 4.5° hotter, and those in February 2006, 5.2° hotter than this month. (Note added: This cooling was global.)
With 58% of mornings exceeding 4 octas of cloud, this February, along with December 2007 (58%) and June 2007 (60%) was one of the cloudiest months in nine years. Most months in Manilla have about 30% cloudy mornings.

This month’s rainfall of 116 mm is in the 81st percentile of February totals. (Last February’s 128 mm was the seventeenth wettest February on record.) Taking rainfall totals for more than one month, every total up to 12 months is very high: above the 70th percentile.

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.