A deep low pressure system with over Bass Strait is generating strong winds and rain for TAS & southeast VIC. Troughs are also bringing a few showers to inland NSW, western VIC & southeastern SA. Onshore winds near a high is bringing patchy showers to southwest WA.
Weather in Business
Today, 3:47AM UTC
Powerful low pressure system lashes Tasmania
A deep low-pressure system rapidly intensified overnight and began pounding Tasmania and southeast Victoria with howling winds and heavy rain. Some of the highest wind gusts recorded overnight and this morning include 82km/h at Hobart, 91km/h at Cape Bruny and 100km/h at Mount Wellington. Many locations recorded more than 50mm of rain to 9am this morning. The highest total was at Mount Wellington with 109mm in 24 hours and 82mm in 6 hours. Image: BOM MSLP analysis 4am EST Sunday 14th Like an East Coast Low, this system developed within a coastal trough and intensified rapidly due to a wave in the upper-level winds, an influx of tropical moisture and warmer-than-average sea surface temperatures. Image: Wave in the jet stream over southeast Australia at 10pm EST Sat 13th (ECMWF model) Image: BOM sea surface temperature anomaly for Fri 12th August The system has weakened and the Bureau of Meteorology has cancelled a severe weather warning for damaging winds and heavy rainfall for southern and eastern Tasmania. Another warning for northeastern Tasmania may be issued later today due to the threat of severe thunderstorms. Stay up to date with the latest warnings using https://www.weatherzone.com.au/warnings The system will weaken further on Monday but still cause showers and gusty winds across southeast Australia before it clears off on Tuesday. The more usual cold fronts and troughs will then return on Wednesday, making for quite a wet and windy week.
13 Aug 2022, 4:02AM UTC
Low pressure system gives Tasmania a blast
A low pressure system will strengthen off the east coast of Tasmania Sunday, giving the Apple Isle a gusty blast. Strong-to-gale force southeasterly winds will batter the southern coastline and Hobart Sunday morning. Winds could possibly reach 90km/h in Hobart and 100km/h in exposed and elevated areas. Wind gusts across Tasmania Sunday 14th, using ECMWF There will also be some significant rainfall with the low pressure system with the east expecting falls, possibly heavy at times, between 40-120mm over the 48 hours to 10pm Monday. The Bureau of Meteorology has issued warnings for heavy rainfall and damaging winds for Tasmania’s south east on Sunday. You can view the warning s live from here: https://www.weatherzone.com.au/warnings As the low moves slightly to the west and centres itself over Tasmania on Monday, clockwise winds will surround the southernmost state with westerly winds in the north and easterlies in the south. Winds will be stronger in Bass Strait. Wind speeds at 10m across Tasmania Monday 15th, using ECMWF The low will move away to the east late Tuesday and Wednesday, providing a brief respite to Tasmanians. However, the calmer conditions won’t hang around for long as another strong front approaches from the west Thursday.
13 Aug 2022, 2:57AM UTC
When will the rain give Adelaide a break?
A series of troughs, cold fronts, and low pressure systems have been bringing showers, rain, and strong winds to Adelaide since last Wednesday. Until now, Thursday 11th had the highest daily rainfall for August, with 10.4mm. The question most relevant for those who want to enjoy the outdoors or simply wash (and dry) clothes is: when will this rain give us a break? Lows and troughs will keep causing showers and rain until Monday 15th. Accumulating precipitation between Saturday 13th and Monday 15th, using ECMWF High pressure will build over the region and bring a brief relief in showers on Tuesday 16th and Wednesday 17th. So enjoy these days while you can, because another series of troughs and fronts will bring more showers and rainfall later in the week. Adelaide has an average total rainfall of 61.3mm for August and has so far recorded 36.4mm in the city. In the past 13 days, only two of them were rain-free. That's why those who live in Adelaide have the feeling of being moldy.
Weather in Business
11 Jul 2022, 3:11AM UTC
Record month for wind power in Australia's National Electricity Market
New data shows June was one of the best ever months for renewable energy in Australia’s National Electricity Market and a record-breaking month for wind power. June 2022 was a relatively dry and cool month for much of eastern and southeastern Australia, with frequent periods of strong winds and clear skies. NSW registered its driest June since 1986, while Sydney and Brisbane had their sunniest June since 2004. This abundance of sunshine and wind created an ideal month for renewable energy generation in the National Electricity Market (NEM). The combined generation of solar (rooftop and utility), wind and hydropower across the NEM in June 2022 was 5,969 Gigawatt hours (GWh). This is the third highest monthly volume of renewable energy generation in the NEM in records dating back to 1998. Wind power Wind power had a record-breaking month in the NEM, with 2,527 GWh of generation in June 2022 beating the previous monthly record of 2472 GWh from July 2021. Victoria also set a new record for wind power in June this year, with 1,073 GWh easily surpassing the state’s previous record of 922 GWh from July 2021. Solar Power Solar power also had a strong month, with rooftop generation in June outperforming May 2022, despite May usually being the sunnier month. This was the first year on record where June rooftop solar generated more power than May. Utility solar also continued to see strong growth, producing 589 GWh in the NEM during June 2022, which was a big step up from 445 GWh in June 2021. Hydropower While June was a very dry month for large areas of eastern and southeastern Australia, an abundance of rain earlier in the year ensured that there was plenty of water available for hydropower. The NEM received 1,885 GWh of electricity from hydropower in June 2022, which was the 8th highest monthly value in 283 months of records dating back to 1998. The combination of favourable weather and continued growth in the sector caused June 2022 to be an exceptional, and in some cases record-breaking month for renewable energy in the NEM.
21 Jun 2022, 3:53AM UTC
La Nina floods make NSW ports too fresh for ships
La Niña has had a surprising impact on shipping operations in NSW this year, with increased freshwater outflows from flooded rivers affecting the behavior of ships entering some ports. Ships entering tidal ports in NSW are affected by local weather conditions, tides and waves, which can all affect a vessel’s ability to enter and operate safely within a port. One of the important things to consider when allowing larger vessels to enter NSW ports is the tide, which needs to be high enough to allow deep drafted vessels to enter, navigate and exit a port safely. This year, the window of time where water levels are high enough for ships to enter some NSW ports has been reduced by enhanced freshwater inflows from heavy rain and flooding. Image: Rainfall between January and May 2022 was in the top 10 percent of historical records for most of eastern NSW, with some areas receiving their highest rainfall on record for this period. Source: Bureau of Meteorology Freshwater is less dense than salt water, which allows ships to sit lower in the water. The prolific flooding seen in parts of eastern NSW earlier this year caused huge injections of freshwater into the coastal zone, which decreased salinity and affected shipping operations. According to Philip Perkins, Meteorologist and Sales Executive of Ports, Offshore and Safety at Weatherzone, "port users and operators at river-based terminals have been impacted by summer and autumn rainfall. “During high river flows water salinity is reduced. This means vessels can behave differently, resulting in elevated risk to vessels even at berth. Even when secured properly, berthed vessels can be impacted by passing traffic in the terminal.’’ In addition to the safety of ships, decreased salinity at river-based terminals can also reduce the window of time where larger vessels can enter these ports. In some cases, this may force ships to wait for the next high tide before entering or departing the port. Fortunately, river levels and discharge rates have now returned to more normal levels in eastern NSW. However, the ongoing influence of La Niña and a developing negative Indian Ocean Dipole increases the risk of more flooding in the months ahead. With the ground still holding a lot of water, any periods of heavy rain this winter and spring are likely to cause flooding, which may have immediate impacts on shipping operations.