Spring in Victoria

2002

Photographer: Clyve Herbert

Images © Clyve Herbert - 2002 (ASWA Archive)

October 2002

 
 

A cold air CB showing weak wall cloud type features moving eastward near Torquay, however if you look to the left and centre you can see a vorticity feature in the scud closer to the observer, this small area was rotating for about 2/3 minutes but does not appear tornadic but was possibly associated with low level turbulence.

 A cold air thunderstorm approaching Barwon Heads on Sunday 13/10/02 at around 1700hrs. The storm was developing in cold unstable air ahead of an approaching trough, a cold pool low was located south of Mt Gambier.
Receding shower A receding cold air shower east of Ocean Grove. The rear of the shower shows copious snow fallout cascading down the west side the sun illuminates the white of the falling snow and ice crystals, the melt level can be seen as a 'false cloud base', where the snow turns to rain and reflects the sunlight in a different way, a faint weak rainbow can be seen if you look for it. Sunset - 11th October
Sunset - 11rth October  

An approaching cold air shower line over Geelong on 8/10/02. Note the ragged sun dog showing colour reflectivity where the angle of the low sun is reflected by ice crystals. Some of the ice crystals are vertically higher hence the horizontal length of the reflectivity.

Please find image of horizontal sun dog over Geelong at about 1800hrs 8/10/02
A cirrus line of the species arranged in filaments showing a type of spinal column often seen as isolated events.  

Altocumulus waves
A photo of the powerful Broadford supercell taken today at around 1630 showing the southern inflow tail the whole updraft column was rotating...unbelievable!!!!
Broadford supercell  

 

 Broadford supercell
Early fog - Lake Connewarre  

 

 Another way of looking at it - Early fog over Lake Connewarre
 

September 2002

 
Peek-ah-boo sunset
Jumbled convection Geelong can really turn it on when it comes to sunsets!

A weakening cold front passed over Melbourne during the late afternoon of 27th September 2002, a few isolated storms developed along the cold front. Fortunately,one of these storms developed just west of Melbourne and provided a spectacular backdrop to the city Skyline
A weakening cold front passed over Melbourne during the late afternoon of 27th September 2002. A few isolated storms developed along the cold front. Fortunately, one of these storms developed just west of Melbourne and provided a spectacular backdrop to the city skyline.
A distanct shower from Melbourne.
The lowering sun shining behind a thin deck of alto cumulus/alto stratus and lower level fracto cumulus and cumulus humilus. Sunset - Melbourne Sunset - Melbourne
Anti-crepuscular rays over the MCG Sunset - Melbourne Sunset - Melbourne
Sunset - Melbourne Altocumulus & virga Cold air Cb west of Melbourne - 25th September
Trailing end of a cold air Cb west of Melbourne - 25th September Sunset - 21st September Sunset - 21st September
Sat pic (visible) for around 3.30pm showing a very narrow frontal line of cloud extending across western Vic and through Geelong this image matches the photo of the cloud line taken from Leopold. The two would make a good comparison of what the line looks like from space and from the ground!! This is an example of a very narrow surface cold frontal boundary advancing across the Geelong area today Wednesday 19/09/02 at about 3pm, as you can see not all cold fronts exhibit what could be regarded as 'traditional' text book appearances. On this occasion just a narrow line of congesting cumulus and brief showers,however wind strength was certainly a different issue with gusts reaching 98kph here at Leopold, the passage of the line was accompanied by a wind shift from about 270* to about 245*. Sat pic (visible) for around 3.30pm showing a very narrow frontal line of cloud extending across western Vic and through Geelong this image matches the photo of the cloud line taken from Leopold. The two would make a good comparison of what the line looks like from space and from the ground!!
Some nice lenticularis activity over the Geelong area today. This type of mid level cloud is common over this region especially in moderate to strong north winds. These waves are generated by the Dividing range to the north. They are composed of supercooled water droplets and are of the standing wave variety. They show pronounced dark shading and little other structure detail. Occasionally they transform to a more cumuliform type this is due to instability caused by the release of latent heat through condensation. Sunset 12th September - Geelong Sunset 12th September - Geelong
On rare occasions especially when a strong inversion is present and under the influence of a strong high pressure, cumulus can grow in light wind environments with moist and cool surface conditions, the cumulus spreads out under the inversion and in this case downward convection under the inversion has produced an uncommon variety of water anvil mammatus. Cold air shower in modified polar air - Bellarine Pen. 10th September The snow line/melt level in an approaching cold air shower, the melt level can be seen where snow turns to rain, the snow line was very low late yesterday afternoon falling to about 500m. 9th September
Shower over Geelong - 9th September Geelong - 9th September Rainbow below the snow line - Geelong 9th September
Stratocumulonimbus - Geelong 6th September Stratocumulonimbus - Geelong 6th September Rainbow 4th September
Lonely Cu - 5th September 0902ch04t.jpg (26325 bytes) 0902ch02t.jpg (17252 bytes)
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Waves Shower over Geelong - 3/09 Shower over Geelong - 3/09
 

 

  

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