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STORMPLANET - Severe Event Reports
Thursday November
20th 2003
Melbourne, Victoria.
Overview*
A trough of low pressure that produced severe thunderstorms in NSW also
caused widespread rain and storms across VIC. On Thursday afternoon, a
Severe Thunderstorm Advice was in force for the Central, North Central,
Gippsland, Northern Country, Northeast and Alpine districts.
Rainfall was recorded in all districts in
the 24 hours to 9am as a line of showers and thunderstorms crossed
Victoria from the west late yesterday and overnight, although these
mainly affected southern parts of the state. The highest totals were
recorded about the west coast with the highest being 29mm at Nelson.
This line brought some brief relief from Wednesday's heat about coastal
areas, with warm and very humid conditions prevailing overnight in most
areas. Overnight minimum temperatures were well above average - mainly
by 8 to 10 degrees, except about the far southwest coast where a cooler
south to southwesterly change had already made some progression from the
west. Widespread fog and mist with low cloud were associated with these
cooler winds about the southwest.
Further showers and thunderstorms developed during the day from the
west, tending to areas of rain as the cooler change advanced across the
state. Some of the thunderstorms became severe with reports of flash
flooding and severe wind gusts strong enough to uproot trees. The
strongest wind gust recorded was
95 km/hr at Albury/Wodonga associated with a thunderstorm. As the cooler
change moved eastwards, hazy low cloud followed about southern parts
with lighter rain or some drizzle and a few further showers. The
precipitation generally cleared from the southwest late in the day.
Rainfalls were recorded in all districts in the 6 hours to 3pm with the
highest being 42mm due to a thunderstorm at Angleside, south of
Wangaratta.
Sultry conditions ahead of the change also meant that maximum
temperatures were generally above average by 5 to 10 degrees, except
where the change arrived earlier about the west. The highest recorded
maximum was 35 degrees at Yarrawonga and Albury-Wodonga.
In Melbourne the temperature ranged from 17.9 degrees at 5:50am to 31.8
degrees at 12.05pm. The city gauge recorded 1.2 mm in the 24 hours to
9am with 4.4 mm being recorded in the 6 hours to 3pm. Moorabbin recorded
23mm in this same 6 hour period as a thunderstorm moved overhead.
The following images were captured in Melbourne's northern suburbs,
ranging from Tullamarine to Diggers rest. Most of the images focus on
the wind change signified by a roll cloud that moved through in a N to
NE direction. A video timelapse is included in this report as well :
Once the change came through, very hazy
low cloud moved through the area and I was driving through Kinglake when
this low cloud streamed through at speed, reducing visibility to 25-30
metres, also on video in this report:
Video
Video
1 - shows a pan of the approaching roll cloud
from Diggers Rest, looking south.
Video
2 - timelapse of the roll cloud. Shot from
directly underneath so rolling motion not as evident as it was from
further away.
Video
3 - driving in near zero visibility through
Kinglake after the change.
* Extracted from
BOM daily summary.
Above courtesy
BOM.
Above courtesy
Weatherzone. |
T a k i n g A u s t r a l i a b y
S t o r m ! 
