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Severe storm outbreak continues for NSW, Qld

Ben Domensino, Tuesday March 14, 2017 - 12:24 EDT

Today is the second day of a significant thunderstorms outbreak across eastern Australia. So, how bad was it on Monday and what's in store?

New South Wales was the focus of the storms yesterday. Here are some of the standout observations from across the state on Monday:
- Dubbo experienced flash flooding after 69mm of rain fell between midday and 5pm. This was their heaviest rain since 2013 and the heaviest for March in 17 years
- Moree had more than a month's worth of rain in one hour, when 55mm fall between 6pm and 7pm
- Parkes collected 50mm in nine hours, their heaviest fall in three years
- Hail turned the ground white at Gulgong and reached the size of golf balls around Dubbo
- Power outages from the storms included thousands of customers on the Central Coast
- Wind gusts of 80km/h were recorded at Trangie and Young, although stronger winds are likely to have occurred away from the state's weather stations.

Yesterday's thunderstorm outbreak continued throughout the night and has shown no signs of abating this morning.

A supercell thunderstorms ravaged the Darling Downs in Queensland shortly after midnight and has since travelled all the way to the highly populated Southeast Coast. A supercell is the most intense type of thunderstorm and can cause significant damage over a large area.

There were reports of golf ball sized hail amid heavy rain and frequent lightning in Tara as the supercell rumbled overhead at 2-3am EDT. The intense storm reached Oakey around 8am, causing flash flooding after nearly 20mm of rain fell in half one hour. A roof was torn from a house in Goombungee, to the north of Toowoomba, according to State Emergency Services.

At 9:56am EST, the Bureau of Meteorology issued a detailed severe thunderstorm warning for destructive winds in excess of 125 km/h, heavy rain and large hail as the supercell marched east towards northern Brisbane.

Storms are also widespread across New South Wales this morning and will continue to be severe today. A severe storm warning was issued at 10:21am EDT for much of the state's North West Slopes and Plains and surround areas, along with parts of the central coast and ranges, including Sydney and Newcastle.

Storms will continue over central, eastern and northern New South Wales today. Heavy rain will be the main threat near the coast, while damaging winds and large hail are an increased risk over the central and northern inland near a pool of cold upper level air.

In Queensland, storms will continue to target the southeast today and also the the state's central districts. The focus of severe storms will be inland, although some are likely to reach the coast.

Showers and thunderstorms will continue in both states during the second half of the week as an upper pool of cold air lingers in the region. There are indications that a trough may deepen near the coast on the weekend, which could enhance rainfall. After a week of wild storms, river flooding may become an issue by the start of next week.

- Weatherzone

© Weatherzone 2017

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