Checkout totals against AWN “Normal” here
www.australianweathernews.com/data/DS1_09.HTM
As I write totals are only to the 9th and there may be a few more mm to add for the 10th.
More later
AWN Oz page www.australianweathernews.com/recent_AWN_daydataCurrentMonth_station.html
Back in March I blogged
SW WA rainfall the arm-waving Gov misinformation continues as BoM closes or neglects rainfall stations
www.warwickhughes.com/blog/?p=7120
Several subjects to be covered/touched on/updated in this important contested area flooded with Gov funded misinformation.
I listed issues A to H all very much alive.
I see Weatherzone has an article drawing attention to June rain in Tas but ignores SW WA and Perth.
Perth numbers are way more impressive than the Tas numbers.
I also note the BoM map of ” Current month to date rainfall percentages for Western Australia to 10/06/2023″
www.bom.gov.au/climate/maps/rainfall/?variable=rainfall&map=percent&period=cmonth®ion=wa&year=2023&month=06&day=10
does not include Perth and certain other sites where rainfall to 10June exceeds the NORM for all June.
Hi Wazz.
Re “exceeds the norm for all of June” I think the maps are using the 1961 to 1990 base period average.
The AGCD map you link to seems to be the same at first glance to the older AWAP map here. Both maps now showing rain up until the 12th.
www.bom.gov.au/jsp/awap/rain/index.jsp?colour=colour&time=latest&step=0&map=percent&period=cmonth&area=wa
At this link below i find the words:
“The reference period for supporting long-term climate change assessments is 1961 to 1990, and is commonly used in our climate maps, climate statistics and is the base period for most climate change studies. The next standard reference period is expected to be 1991 to 2020.
For instance, the anomaly map for the period December 2018 to February 2019 (summer), would be making reference to the monthly December, January and February grids over the 1961 to 1990 standard reference period.”
www.bom.gov.au/climate/austmaps/about-rain-maps.shtml
This current WA annual average rain map uses the 1991-2020 period.
www.bom.gov.au/climate/maps/averages/rainfall/?period=an®ion=wa
Using the Wayback machine I found maps issued in 2020 and 2017 that used the 1981-2010 and 1961-1990 periods respectively. The outline area of the 1,000mm to 1,500mm rain contour is quite different from version to version.
I will try and upload these for display in early hours when I hope my software will upload to my shite www page host.
Here are links to the Australian annual average rain maps mentioned above.
First from 2017 – www.warwickhughes.com/agri16/WA-av-rain2017.jpg
Then from 2020 – www.warwickhughes.com/agri16/WA-av-rain2020.jpg
If you look closely at the contour outlines for the 1,000mm to 1,500mm contour you see the area is least in the youngest map linked in my previous post.
This reflects fact that approx 1975 SW WA rainfall reduced to a lower annual average level compared to pre-1975 rain.