Tag Archives: 2020

August 2020: warm nights and cool days

Posted in Manilla NSW, Monthly weather by

Weather log for August 2020

Weather log August 2020 Manilla

In August 2020, both the second and third weeks had warm nights that raised the weekly temperatures. The night of the 15th was especially warm, above normal by 8.5°. With the warm nights most days were cloudy, and five days had more than 0.2 mm of rain. The highest reading, 17.6 mm, was on the 8th.
There were 11 frosts (normally 15).

Comparing August months

Climate August 2020 Manilla NSW

The last three August months have all had very low moisture values, with August 2019 being also very warm. This month was much more humid: a higher dew point (2.0°), cloudy skies (42%) and an extremely narrow daily temperature range (12.3°) that was 4° narrower than normal.
Rainfall, however, was only at the 38th percentile (27.8 mm). That is still far below the August average (40 mm) and has added little to depleted water storages.

Drought

I will report separately on the on-going drought. Extreme rainfall shortages persist.

Data. A Bureau of Meteorology automatic rain gauge operates in the museum yard. From 17 March 2017, 9 am daily readings are published as Manilla Museum, Station 55312.  These reports use that rainfall data when it is available. Recording resumed on 20 July 2019. The gauge failed again during February (25/02/2020 ), but was repaired on 11/3/20.
My estimates of early morning dew point have drifted anomalously low. From August 2019, I use data from the Tamworth Airport published graphs.
All other data, including subsoil at 750 mm, are from 3 Monash Street, Manilla.

3-year trends to August 2020

Posted in 3-year climate trends, Manilla NSW by

August narrow temperature range

3-year climate anomaly trends to August 2020

August raw anomaly data (orange)

Temperatures

Daily maximum temperature anomaly (all x-axes), was just below normal.
Daily minimum temperature anomaly (lower left): was just above normal.
Subsoil temperature anomaly (lower right): was above normal.

Moistures (moist is at the bottom)

Rainfall anomaly (upper left) was normal.
Cloudiness anomaly (upper right) was more cloudy than normal.
Dew point anomaly (middle left) was normal.
Daily temperature range anomaly (middle right) was extremely narrow (humid).

 Fully smoothed data values (red) 

Fully-smoothed data for the summer (DJF) of 2019-20 shows that the daily maximum temperature anomaly continued to fall from the record value of October 2019. The daily minimum and subsoil values were static.
All the moisture indicators (rainfall, cloud, dew point, and daily temperature range) continued to move downward, showing decreasing drought.
The partially-smoothed anomaly values through the autumn and winter were near normal. They were not nearly moist enough nor cool enough to relieve the on-going drought that had peaked with high temperature and low moisture anomalies in 1918-19.

Notes:

January data points are marked by squares.

Smoothing Continue reading →

3-year trends to July 2020

Posted in 3-year climate trends, Manilla NSW by

July: warm and humid

3-year climate trends to July 2020 at Manilla

July raw anomaly data (orange)

Temperatures

Daily maximum temperature anomaly (all x-axes), remained near +1 deg.
Daily minimum temperature anomaly (lower left): rose very high (+2.5 deg).
Subsoil temperature anomaly (lower right): remained very high.

Moistures (moist is at the bottom)

Rainfall anomaly (upper left) just below normal.
Cloudiness anomaly (upper right): near normal.
Dew point anomaly (middle left): just above normal.
Daily temperature range anomaly (middle right) low (humid).

 Fully smoothed data values (red) 

Fully-smoothed data for January 2020 shows that the daily maximum temperature anomaly continued to fall from the record value of October 2019. The daily minimum and subsoil values were static.
All the moisture indicators (rainfall, cloud, dew point, and daily temperature range) continued to move downward, showing decreasing drought.

Notes:

January data points are marked by squares.

Smoothing Continue reading →

July 2020: warm and humid

Posted in Manilla NSW, Monthly weather by

Weather log for July 2020

Repeating the pattern of June, the second week of July was 3° above normal. Again, one night (11th) was remarkably high above normal (9.8°). The final week was also warm.
There were 14 frosts (normally 17), but the number of cloudless days (5) was equal lowest for July.
Seven days registered rain above 0.2 mm, the highest being 10.4 mm on the 27th.

Manilla weather log July 2020

Comparing July months

The mean monthly temperature of 11.1° was the same as last year: only 0.3° lower than the warmest July (11.4° in 2013). However, days were rather cool (18.0°), while nights (4.3°) were the 2nd warmest for July. The resulting daily temperature range of 13.7° was narrower than normal. That suggests humidity, agreeing with a high dew point (3.2°) and cloudiness (39%).
The rainfall total of 31.3 mm, being at the 44th percentile, is still well below the July average (41 mm). However, no July rainfall has been much higher at Manilla in eight years (91.4 mm in 2012).

Manilla climate July 2020

Drought

I will report separately on the on-going drought, that still breaks low-rainfall records.

Data. A Bureau of Meteorology automatic rain gauge operates in the museum yard. From 17 March 2017, 9 am daily readings are published as Manilla Museum, Station 55312.  These reports use that rainfall data when it is available. Recording resumed on 20 July 2019. The gauge failed again during February (25/02/2020 ), but was repaired on 11/3/20.
My estimates of early morning dew point have drifted anomalously low. From August 2019, I use data from the Tamworth Airport published graphs.
All other data, including subsoil at 750 mm, are from 3 Monash Street, Manilla.

June 2020: warm and dry again

Posted in Manilla NSW, Monthly weather by

Weather log for June 2020

[Note.
Due to illness, the first seven days of this month were missed for some Manilla values. No actual values were noted for cloud or soil temperature. Daily maximum and minimum air temperatures were estimated by regression on values from Tamworth Airport Automatic Weather Service. Further illness has delayed publication.]

The second week was nearly 3° above normal. One day (13th) was 5.9° above normal. and one night (14th) a remarkable 9.6° above normal. That night also recorded the highest rainfall: 15.2 mm). Later, a cold day, 5.5° below normal, occurred on the 23rd.

Weather log June 2020 Manilla

Comparing June months

All three mean monthly temperatures were one degree above normal, a little warmer than in June last year. The Subsoil temperature was 2 deg above normal.
Moisture indicators were near normal, except for rainfall.
The rainfall total of 20.8 mm was at the 28th percentile for June, which was less than half the long-term average.

Climate Manilla June 2020

Drought

I will report separately on the on-going drought.

Data. A Bureau of Meteorology automatic rain gauge operates in the museum yard. From 17 March 2017, 9 am daily readings are published as Manilla Museum, Station 55312.  These reports use that rainfall data when it is available. Recording resumed on 20 July 2019. The gauge failed again during February (25/02/2020 ), but was repaired on 11/3/20.
My estimates of early morning dew point have drifted anomalously low. From August 2019, I use data from the Tamworth Airport published graphs.
All other data, including subsoil at 750 mm, are from 3 Monash Street, Manilla.