Prosper in a dynamic world
Search

Build-up reaching its crescendo in the tropics

 

Severe storms are flaring up in Kimberley and Top End as the build-up to the monsoon ramps up.

The build-up season is an unofficial season that generally runs between September and December in northern Australia. It is characterised by hot temperatures and building humidity. As the build-up continues, thunderstorms (especially in the afternoon) become a more regular occurrence. This activity reaches a peak just before the monsoon arrives, which brings heavy rain, storms, cooler temperatures and an increased chance of tropical cyclones.

20221117_Kimberley_storm

Image: Thunderstorms over northern Aus shown by the Total Lightning Network (WZTLN) and Weatherzone Oracle

Build-up thunderstorms are once again sparking up over northern Australia, with some of these storms being severe, producing damaging winds and heavy rain. As of 4pm ACST, there had already been over 250,000 strikes recorded over the Top End and Kimberley, with plenty of strikes still to come into the evening.

20221117_Kimberley_lightningImage: Lightning strikes within 800km of Lake Argyle recorded up to 4pm ACST Thursday 17th from the WZTLN

The coming week will see regular scattered-to-widespread thunderstorms occurring over the north each afternoon, with more thunderstorms also forming overnights and in the mornings. Some of these storms will likely be severe with damaging wind gusts and heavy rain possible. You can find the active warnings on our website here.

Over the next fortnight, thunderstorms look to become more of a regular occurrence over the coast just north of Australia as well. This is a tell-tale sign that the monsoon is not too far off and may be building early in December. During La Niña years, the monsoon tends to arrive earlier, usually in mid-December.

20221117_nwp-pcp-ecmwf-hres-168_au-nt_1920x1080Image: Rainfall expected over the next week from ECMWF

DTN APAC can provide access to our industry leading WZTLN and Oracle products so that your business can track thunderstorms, allowing you to safely and efficiently avoid their severe affects. To find out more, please email us at apac.sales@dtn.com.

Latest news

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

Tropical cyclone season begins with warm oceans surrounding northern Australia

The 2025-26 tropical cyclone season has begun with abnormally warm oceans surrounding northern Australia, signalling an increased risk for severe tropical cyclones in the coming months. The Australian tropical cyclone season runs from November 1 to April 30. During this six-month period, there are usually about 9 to 10 tropical cyclones in the Australian region, […]

7.8 million lightning pulses detected by DTN’s Total Lightning Network over Australia in one week

A barrage of thunderstorms battered large areas of eastern and northern Australia over the past week, producing close to 8 million lightning pulses across the country and more than 4 million over Queensland alone. DTN’s Total Lightning Network (TLN) detected around 7.79 million lightning pulses above Australia last week. This lightning was observed over every […]

Warmest October on record for Sydney, Brisbane

Sydney and Brisbane just had their warmest October on record, despite a relatively cool end to the month. A surge of cold air caused temperatures to plummet in eastern Australia earlier this week. In Brisbane, the temperature only reached 22.2°C on Tuesday, while Sydney’s maximums remained below 18°C on both Tuesday and Wednesday. These chilly […]

Australia’s 2025-26 tropical cyclone outlook

The Australian region is primed for severe tropical cyclones this season, despite an ongoing trend of reduced tropical cyclone activity over Australian waters in recent decades. Australia’s tropical cyclone season officially runs from the start of November to the end of April. During this six-month period, the Australian region usually sees around 9 to 10 […]