Category: Articles

Summary of Geelong Weather 2015

 Summary of Geelong Weather, 2015 (Current figures are from the Bureau of Meteorology station at Breakwater “Geelong Racecourse AWS”, with all temperature and rainfall averages from several official Geelong BoM sites from most recent 30-year averages, 1984-2013) Month Weather Conditions Temps (deg C) Rainfall (mm) Cumulative Rainfall Comments JAN Warmer than 30-yr av by 0.4°. 4 days >30°, top 39.8°…

Geelong Rainfalls, 2014

Below are two rainfall graphs relevant to Geelong in 2014.  The first graph shows the monthly rainfall in the urban area compared to the long-term (latest 30-year) average. Please click on each image to enlarge it. The second graph shows the total annual rainfalls for a number of Geelong suburbs, townships and districts in the region for 2014. Please click…

Bureau Forecasts for Geelong

What and Why? Back in October 2014 we at GWS decided to investigate the accuracy of 24-hour forecast temperatures that were being published by the Bureau of Meteorology (BoM) for Geelong. As far as minimum and maximum temperatures are concerned, what is an acceptable level of error?  If the forecast minimum is 14 degrees but the actual minimum is only…

Geelong Weather Book Update for 2014

Annual updates of this feature will be available from www.geelongweatherservices.com.au every January. CORRECTED TYPO’S: PAGE 55 MONTHLY TRENDS LINE 3 should read: “4.25 shows that the most current 30-year average is now 28.1 mm. This places” PAGE 57 LINE 3 should read: “another with an increase in maximums matching the decrease in minimums.” PAGE 80 MONTHLY TRENDS LINE 3 should…

Climate of Geelong

The climate of the Geelong region, ie, the region stretching from Werribee and the Bellarine Peninsula in the east to the Otway Ranges in the southwest and Meredith in the north, covers a very wide range of temperature and rainfall patterns. From the highest rainfall in the state at Wyelangta (near Lavers Hill) to almost the lowest at Lara-Little River,…

Inverleigh Tornado, 21-12-03

Just south of Inverleigh, on “Murroon” property (approx 20 km west of Geelong) on Sunday 21st between 6.00pm and 6.20pm (see 6.10pm radar image below) there was severe wind damage to farm buildings during the thunderstorms which passed through NW-SE with a frontal system which crossed the whole state. There were reports of other wind damage in the Geelong district…

Where To Put Your Thermometer

Have you recently obtained a thermometer and are wondering where to put it? You can spend literally from two dollars to hundreds of dollars on an external thermometer or temperature gauge. The cheapest ones are usually accurate to within a few degrees, but generally, the more you pay, the better will be the result.

Jet Stream

Recently we flew to Perth for a holiday. The flying time from Tullamarine to Perth took just on four hours in a Boeing 737, because we were travelling headlong into the prevailing westerly airstream. At 33,000 feet or 10,000 metres the headwinds would have been over 180 kilometres per hour at the time we went. On our return flight it…

Geelong the Windy City

Everyone knows Geelong is a windy place. Close to the coast and without sheltering hills, often the prevailing northwesterlies and southwesterlies are created by isobaric pressure gradients associated with low pressure systems south of Tasmania. While the inner urban areas are usually better-sheltered, some suburbs are more at risk than others. The outer western fringes of suburbs such as Bell…

Why is Geelong So Dry?

  CLICK TO ENLARGE Even in the best of years Geelong is a dry place. So at times when the whole of southern Victoria is suffering from a rainfall deficiency, Geelong never escapes the general trend. If anything, we suffer more. Our main prevailing winds come from the northwest and the southwest. This means they have to cross some of…

Tornado Funnels over Geelong

Last Thursday (19-10-00) was a day of unusual weather. A small low pressure system was moving slowly southeastwards across Port Phillip Bay and directing a south and southwest airflow across Geelong. The extreme instability of the atmosphere saw several rotating funnel clouds develop and descend over Batesford and our western suburbs. Funnel clouds can easily develop into tornadoes if they…

Winter Solstice

The winter solstice is upon us. On the 20th-21st June the shortest day occurs in the southern hemisphere. At noon at Geelong the sun reaches only 28.5 degrees above the horizon and daylight only lasts 9.5 hours. The average daily maximum temperature is 14.3 degrees C. After this date the days lengthen, but temperatures continue to drop until around the…