September 2013

RAINFALL

Very pleasing above average rainfalls were received across most of the region. Most of the urban area recorded over 50 mm (BoM average 49.7). Some areas such as Inverleigh (43 mm), Lara (30 mm) and Clifton Springs (41 mm) were slightly below average.The Otways Catchment received 140 mm at West Barwon Dam and 170 mm at Mt Sabine. Water resources have now grown to 87 % of capacity.

TEMPERATURE

This has been Geelong’s equal warmest September on record with a mean temperature of 13.9 C. Daily maximums averaged 18.8 degrees C (BoM average 16.5) and minimums 9.0 C (BoM average 6.6). Surprisingly, the warmest day was the 1st, with 25.1 C, and the lowest overnight temperature dropped to 3.4 C on the 13th. Warmest overnight temperature was 14.5 C on the 5th. None of these figures is an extreme.September, 1928, was Geelong’s other warmest September. Average daily maximum in that month was 19.2 degrees and average daily minimumwas 8.5 degrees, giving a mean temperature of 13.9C. Long-term (1903-2012) Bureau of Meteorology mean for September is 11.9 C.

Geelong’s September temperatures have shown a very slight increase since 1903, due mainly to the Urban Heat Island effectwhich increases as the urban area grows larger. In the last 30 years however the increase has been only fractional without anydiscernible trend. This of course is comparable with the overall world temperature recorded by satellite since 1979, which showsthere has been no statistically significant warming at all in the lower atmosphere.

Despite Geelong’s warm September this year the world continues to show no increase in warming since the El Nino of 1998, even though carbon dioxide emissions keep rising. See: http://www.drroyspencer.com/latest-global-temperatures

At the moment even NOAA and the IPCC have admitted there has been a 15-year pause, despite IPCC’s continued alarmistreporting.

OTHER FEATURES

True to form, September was windy and on 5 days gusts exceeded 60 kph at Breakwater, the maximum being 76 kph on the 26th as a vigorous low pressure system passed to our south. Avalon received a gust of 102 kph on that day.

Although minor damage was reported around Geelong this did not qualify as a severe storm.

There were 2 days on which thunder and lightning were noticed, and small hail fell on the 26th in some suburbs.

RAINFALL DATA

GEELONG REGION Location Total for
Month
(mm)
Monthly
Average
(mm)
Aireys Inlet 63.4 (71.9) Anakie 58.7 (64.0) Anglesea na (70.5) Apollo Bay 132.4 (108.6) Ballan 81.0 (51.5) Ballarat 60.2 (73.0) Bannockburn 45.8 (52.0) Barwon Heads 54.5 (61.0) Bellbrae na (60.5) Bells Beach na (60.5) Beeac 47.6 (59.9) Beech Forest 176.8 (210.0) Boonah 79.8 (n.a.) Benwerrin 113.0 (n.a.) Birregurra 75.6 (69.6) Breamlea 53.2 (59.0) Buninyong na (n.a.) Clifton Springs 55.8 (65.0) Cape Otway 114.8 (89.6) Colac 61.2 (68.0) Cressy 73.0 (n.a.) Curlewis 57.7 (68.6) Dereel 59.3 (68.0) Drysdale 63.8 (68.6) Durdidwarrah 64.2 (69.9) Forrest na (118.0) Forrest (West Barwon) 140.0 (120.3) Gellibrand na (n.a.) Inverleigh 42.6 (51.6) Jan Juc 51.6 (58.0) Johanna Heights na (140.0) Lal Lal 61.0 (82.0) Lavers Hill na (180.0) Laverton 65.0 (53.0) Melbourne (City) 83.8 (59.4) Meredith (Darra) 53.0 (70.4) Moriac 53.2 (56.0) Morrisons 62.0 (n.a.) Mt Cowley 124.0 (n.a.) Mt Gellibrand 69.2 (n.a.) Mt Mercer 44.6 (n.a.) Mt Sabine 170.2 (n.a.) Ocean Grove 52.1 (n.a.) Point Lonsdale 44.0 (59.2) Pollocksford na (n.a.) Portarlington na (59.2) Queenscliff na (59.2) Shelford 45.0 (54.6) Sheoaks 47.4 (n.a.) Skipton 48.8 (n.a.) St Leonards 58.5 (58.0) Sutherlands Creek 56.0 (48.0) Teesdale 66.0 (57.7) Torquay 66.5 (58.0) Warncoort na (n.a.) Werribee 52.8 (49.0) Wyelangta 214.0 (197.4) Winchelsea 52.1 (54.4) You Yangs 53.5 (46.0)
GEELONG SUBURBS Location Total for
Month
(mm)
Monthly
Average
(mm)
Avalon 53.0 (45.9) Belmont 59.0 (50.2) Bell Park 57.7 (50.0) Breakwater 55.4 (48.0) Ceres 73.0 (48.0) Connewarre 46.5 (60.3) Corio 44.2 (46.6) Drumcondra na (46.6) East Geelong 56.9 (46.6) Grovedale 58.0 (51.0) Grovedale East 53.8 (51.0) Grovedale South 70.2 (51.0) Hamlyn Heights 52.0 (51.9) Herne Hill 46.0 (51.0) Highton 52.0 (51.8) Lara 28.6 (47.5) Lara (Serendip) na (47.5) Leopold 67.0 (50.8) Leopold East 61.9 (50.8) Manifold Heights 50.1 (51.9) Moolap 38.2 (47.0) Waurn Ponds 61.8 (49.7) Whittington na (50.3) Urban Area Average 55.0 (49.7)