POWERING SMARTER WEATHER DECISIONS
Search

QLD miners alert: Heavy rain is on its way

 

Heavy rainfall and large multi-day rainfall totals are expected for parts of central and northeast QLD during the next 48 hours 

This rainfall is set to be triggered by a low-pressure trough, which will linger in the central interior for the next few days. 

Strong moist east to northeasterly winds will feed into this low-pressure trough, generating the rainfall event on Monday and Tuesday. 

Widespread 48 hour accumulated rainfall totals of 30-40mm are predicted along the coast and ranges between Cooktown and St Lawrence.

 

The heaviest rainfall is likely to focus on the coastline stretching between Cairns and Mackay with isolated pockets of 80-120mm of rainfall possible in the next 48 hours.

Bowen could see 48-hour rainfall totals of 30-60mm during Monday and Tuesday.  

This rainfall will begin on Monday afternoon and will become heavier Monday evening into Tuesday, with 30-40mm of rain possible in some pockets in a 3-hour period. 

The heavy rainfall will ease from Wednesday as the low-pressure trough moves further west, away from the QLD coastline. 

Heavy rainfall and mining

Heavy rainfall and flooding at mine site or associated infrastructure can shut down operations for days. 

Within the mine site, heavy rain can damage the haul roads used by dump trucks on a daily basis as part of standard mine operations (figure 2). In some cases, this can become unsafe and can change the slope, road and ramp stability of the mine resulting in deadly landslides.  

 

Figure 2: Open cut mine site roads 

The effects of heavy rain and flooding on a mine site 

Management of water resources is also an important factor on a mine site. Days of heavy rain and flooding can introduce water to already overloaded water reservoirs or rivers nearby or the water table the mine. This can result in open cut pits turning into dams or water entering tailings or processing facilities which have critical thresholds for rain and water quantity. Rainfall can also impact blast planning as rainfall will impact the explosive and the fumes dispersed when blasting.  

Heavy rainfall and flooding can also impact the transport of materials from the mine to the port, which is either done by road or rail.  

Overhead lines can be damaged and fallen trees or debris can affect truck or train services to the port, which can delay or reduce shipping. 

Heavy rainfall and flooding events can reduce the viability of ports, railway lines and roads.  

Accurate rainfall risk and flood risk systems allow mine sites to plan effectively well in advance. This can minimise operational interruption, reduce economic loss and ensure safety onsite.  

Weatherzone’s flood risk system 

We have developed a flood risk system which accurately determines rainfall intensity at any given point along your mine site, catchment, road or railway.  

The system uses radar technology which scans typically every 6-10 minutes, sending your business regular alerts or updates for your specific mine site or railway using geofencing technology (figure 3). 

 

Figure 3: Weatherzone’s rainfall risk system geofencing a large railway system, where for example 78 sections of rail are being monitored by the white forecast grid points or observations. 

Will the flood event subside, continue or worsen? The rainfall risk system is used in combination with Opticast™, an industry leading forecast system which forecasts rainfall intensity and accumulation at your location.  

Weatherzone also provides businesses with long term rainfall forecasting solutions out to 6 months, which allows businesses to plan well in advance and reduce the impact on day-to-day operations. For more information, please contact us at business@weatherzone.com.au. 

Latest news

Satisfy your weather obsession with these news headlines from around the nation, and the world.

Wind farms facing potential cut outs

  Fierce winds are expected to lash parts of Vic, Tas, the ACT and NSW early next week, bringing the risk of wind farm cut outs in the region.  A low-pressure system should develop early next week near Vic and NSW as a cold front interacts with tropical moisture.  This cold front will sweep across SA […]

Exceptionally warm, dry March for parts of SA

Soaring temperatures and abundantly clear skies have just caused one of the warmest and driest Marches on record in parts of South Australia. Abnormally high pressure near southern Australia this month has kept rain-bearing systems away from SA, leading to plenty of warm and dry weather across the state. Image: Clear skies over SA on […]

Easter deluge possible as tropical moisture moves south

The tropical moisture that caused significant flooding in the NT and Qld is set to move southeast over Easter, bringing heavy rainfall, thunderstorms and possible flooding and damaging winds with it.  The map below shows the massive rainfall totals that fell across the southern NT and parts of Qld over the last week.  Image: The […]

Smoke from WA bushfires seen from space

  Several fires are burning across southwest WA this week, with smoke plumes seen from 36,000km above the surface.   A previously out-of-control bushfire in Perth’s southwest is now under control, after burning 3000 hectares of land and damaging property.  As of 10am WST On Tuesday, March 26, four other fires are burning in the […]