Wet season Archives - Green Path

The last of the Wet

I have noticed before that our Wet seasons can end with a farewell deluge. If what we’re getting now – 200 mm and more in a day or two – is this year’s example, it’s a bit late.

John Anderson, veteran rural reporter for our local paper, reckons that if we haven’t had rain before Anzac Day, we’re not getting any. My own rule of thumb was that Easter marked the end of the Wet season, and I suspected that it might be tied somehow to the lunar and solar calendars. Easter, after all, falls just after the first full moon after the Equinox (more detail here).

Either way, this rain is later and and heavier than we would expect. It follows the drenching that Gympie, Brisbane and Northern NSW copped earlier this year. Both events are entirely in line with what we’ve been told – repeatedly – to expect from climate change, although we can’t say that they were “caused by” climate change (for a look at the difficulties in event attribution, try this video).

Our climate has already changed and further changes are unavoidable. None of them are for the better.

Climate action now is imperative, which is why I have neglected Green Path for nearly a month in favour of political action. Normal service will not resume until after the election but I will try to maintain some continuity here on the blog until then.

Wet-season visitors – PIPs and Koels

Torres Strait Pigeons, aka Pied Imperial-Pigeons (i.e. PIPs) and Koels, aka Stormbirds or Rainbirds, are Wet-season visitors to the Townsville region. As I write, the Wet hasn’t arrived but the visitors have been with us for months.

The PIPs are often to be seen high in the tallest trees; their call is a baritone “Coo”, as befits their size, and we tend to smile when we hear them. The Koels, on the other hand, are rarely seen but the males’ incessant calling – a frantic rising wockawockwocka! – can wear out its welcome. The females are far quieter, which is probably a good thing.

Continue reading “Wet-season visitors – PIPs and Koels”

Mount Stuart after rain

Wildlife Queensland intended to visit Mount Stuart on March 24 but their date clashed with a biking event on the mountain so they went to Alligator Creek instead. I, on the other hand, went to their first-choice location a week later. My reasoning was that all the rain we’ve had recently would have made it exceptionally green, and so it was.

I said in August 2016 that, “The summit is a difficult environment for plants and animals alike: very exposed, very dry, and with only a thin covering of soil where there is any at all. Vegetation is ‘open woodland’ with a decent covering of tussocky grass, but most of the trees are tiny. Ants seem to be the most abundant invertebrates but there were other insects to be found as well as the spiders which prey on them.”

New plant growth always feeds more vegetarian insects, which in turn feed more carnivorous insects, spiders and birds, so conditions were good for all of them on this visit. Paperbarks and other trees were in bud rather than in full flower, so the flower spikes of the Grass-trees (Xanthorrhea) were the main nectar source, attracting European honey bees, several species of fly, Tiger moths, beetles and ants – and one Rainbow Lorikeet, too intent on lunch to fly off.

Rainbow Lorikeet on grasstree flower — Rainbow Lorikeet feeding on the flower spike of a Grass-tree, with bees lower down.

Butterflies included Blue Tiger, Glasswing, Common Crow, Grass Yellow, Ringlets and Blues. Nearly all the spiders I saw were orb-weavers, Neoscona and Eriophora species, but there were some Jumping spiders and one silver orb-weaver, Leucauge sp. Ants were everywhere, and there were quite a few wasps and beetles.

Townsville’s 2019 floods

The Townsville flood of January-February 2019 was, like cyclones Althea and Yasi, one of the extreme weather events which define people’s lives in the city. Two months later, “How did you go in the floods?” is still the first question we ask friends we haven’t seen for a while. There’s a lot for Green Path to say about it but whatever we publish now will be incomplete so we will update and extend it as appropriate, in separate posts if justified by the amount of extra material.

Let’s begin with an overview of the weather event and its immediate consequences.

The weather event

A low in the monsoon trough over the Gulf became a rain depression and drifted South and East until it settled over Townsville, where it stayed much longer than “normal” (we will have to return to that concept later) and dumped an inordinate amount of rain on us over about ten days – say 29-30 Jan to 7-8 Feb. Continue reading “Townsville’s 2019 floods”

Townsville’s 2018 Wet Season and what comes after

We’re officially in Winter now and I reckon we moved definitively into the Dry season a fortnight ago, so it’s worth looking back at the Wet and seeing what’s likely to happen to our water supply in the Dry.

Wet season rainfall and the year to come

Herveys Range rain radar — Here comes the rain! Hervey’s Range rain radar, 9.15 pm on Feb 20, 2018

BoM climate data reveals that our rainfall so far this year, Jan – Feb – Mar – April – May, was 118 – 285 – 343 – 10 – 2 mm, for a total of 760 mm.

Of that, 435 mm fell in the last week of February and the first two days of March when a rain depression was trapped over the city; an unusual but very welcome event which made the difference between another really weak Wet and a nearly-average one. Continue reading “Townsville’s 2018 Wet Season and what comes after”