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January so far – Tonga wave two

At the midpoint of the month we’re not doing too badly as far as the weather is concerned. It could certainly have been much worse. After that mildest January day on the first of the month we’ve had enough cold nights to bring the average temperature down to almost the average for this time in January. As it stands we are still a little bit above average.

The decent weather is due to the predominance of high pressure bringing mostly settled weather rather than low pressure systems which usually bring cloud and rain. So far we’ve had very little rain this month with just 15.0mm or a little over 0.5ins.

I’ve a bit more to add regarding the volcanic eruption off the coast of Tonga. I posted that my weather station had picked up a pressure wave on Saturday evening. Having seen a few more posts about this it would now seem that the pressure wave that arrived on Saturday evening had come the short way around the earth from the Pacific Ocean.

I’ve redone the pressure chart and there’s another noticeable disturbance in the pattern in the early hours of Sunday morning.

This is from the pressure wave that travelled the long way around the earth from the Pacific Ocean. The two disturbances are circled on the pressure chart. The forces of nature are truly amazing.

This Post Has 2 Comments

  1. Martyn Garrett

    Hi Jane
    The first photo is just a lucky phone shot from the car when we were returning from Sue’s early morning hospital appointment. The white stuff covering the grass is frost. Once any sunshine gets on the frost it melts instantly but the ground below remains frozen.

    I’ve forgotten the date of that giant eruption that resulted in the year with no summer. It will be interesting to see if all that rubbish that has been spewed out does result in a dull summer.

  2. Jane Strong

    Hello, Martyn, I have two things to comment on …
    One is the top photo. I like it very much. But could you explain the white field, please. Is it frost?
    Two. The double wave is very interesting. Isn’t it going to be fun to watch and see how this affects the weather? Will there be a summer this year?

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