This post: Rain we had; rain this weekend; how to measure rain; rain for next week; possible cyclone out woop woop and Christmas rain. Phew! Read only what interests you (titles are in bold). RAIN. This is all the figures from this mornings rain. Darwin is now sitting on 165.4 mm for the month to 9am. Im on 262.1mm. Darwin will catch up during these northerly rains. WEEKEND FORECAST: Saturday 25 (27 if no rain)-34 Looks like chances of storms increase to after midnight (Saturday morning). Redeveloping in the afternoon. Sunday 26-34 Chance of rain early in the morning and afternoon with a chance of a storm. BOM: Saturday Darwin City (25-32) and Outer Darwin area (25-34) Partly cloudy. High (70%) chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm. Light winds becoming northwesterly 15 to 25 km/h in the middle of the day then becoming light in the evening. Sunday Darwin City (25-33) and Outer Darwin area (25-34) Partly cloudy. High (70%) chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm. Light winds becoming north to northwesterly 15 to 25 km/h in the middle of the day then becoming light in the evening HOW TO MEASURE RAIN: Lately Ive seen people on QLD pages give rain measurement as mls, as in millilitres. This is incorrect. Im glad no one up here gets it wrong. Im sure it is an oversight, but I wouldnt want people to think they can take a measuring jug outside to measure the rain. It is actually measured as millimetres. As it is measured as a distance and not as a volume. I can understand the confusion, as liquids are measured as a volume, however the volumes would change depending on the size of the object being filled, and thus would make all measurements null and void. If you dont have a proper rain gauge, all you need is a container with straight sides (and preferably square corners, but we wont nit pick here). Regardless of how much water the container can hold, you can calculate the rain by measuring how high up the sides the water level reaches. This is measured as a distance, and this is why millimetres is used, or mm (10 mm to a centimetre), and the yanks use inches :/. PS, if you are a ya....person from the United States of America :), my Live Gauges page will allow you to change the way the gauges are measured and can change rain to inches (and wind to mph, knots, m/s etc). For this reason, it makes it a good activity for children to make their own rain gauges as a Where we are in place and time activity. This can be extended by making wind gauges too :) If you dont have a straight side container, it gets more difficult as you have to measure the area, then the millilitres and convert and blah blah science science math...... Of course, Bunnings sell them cheap too :). Just make sure that rain can not bounce off objects into the rain gauge and that all surrounding objects are under a 45 degree angle and the gauge is mounted level and stable. For mine, I also marked all the readings with a texta so I can read it from the varandah and my zoom lens on the camera hahahaha. NEXT WEEK: Chances of storms will stay high for all of next week, with the end of the week having some crackers on offer. IN TWO WEEKS: So far my forecast for peak of activity for the 27th was spot on from the 13th November, I may be making a bold claim as next week is set to be good too, but too the day, look at the rain map! Nearly all orange bar the airport coming in at red and nearly beating the November 24hr record of 105mm set last year. But I mentioned next weeks good storm potential, where we will get our first good westerly surge, a lead up to monsoon time (but still weeks away for a proper one), so much so that a cyclone may be on the cards for the middle of December in the Solomon Sea far to the east of QLD. So Ill be looking for lows developing around then. Unfortunately this will probably mean a quieter spell for us and a dip in our rain totals. Storms will still be possible, just not as regular. CHRISTMAS: It may be too early to talk weather this far ahead, but believe it or not, people asked me a couple of weeks ago, but now there is 3 models suggesting what we could have guessed. It will be a rainy period. However, it will be weaker than usual and not expected to get our first monsoon period by this time which will be great for those anxious about the 40th Anniversary of Tracy. Although it could be a peak period of weather good for storms it will be not be strong enough for a monsoon. Perhaps a weak one at best. I wonder if that means that mid January might bring a mild Heat Wave like this year did? IF YOU GOT THIS FAR: Pour a drink. You deserve it ;) Have a good weekend, Ill be celebrating my birthday and Palmerston Weather turns 4.
Posted on: Fri, 28 Nov 2014 08:57:55 +0000
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