Home › Weather › East Coast Weather Bomb
Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Pulse Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
An east coast weather bomb is a rapidly intensifying low‑pressure system that brings destructive winds, heavy rain and coastal erosion to New South Wales and southern Queensland. The live forecast above shows the current track and intensity for the next 48 hours.
What exactly is a weather bomb and how does it form?
Meteorologists call it “explosive cyclogenesis” — a mid‑latitude cyclone whose central pressure drops by at least 24 hectopascals in 24 hours. Over the Tasman Sea, warm sea‑surface temperatures collide with a cold upper‑level trough, creating a powerful vertical circulation that deepens the low very quickly. The result is a compact but intense storm that can lash the coast from the Gold Coast to the Hunter.
What damage can this system cause along the East Coast?
Storm‑force winds exceeding 100 km/h can bring down trees and powerlines, while torrential rain triggers flash flooding, particularly in catchments from the New South Wales mid‑north coast down to Sydney’s northern beaches. The low also produces a dangerous storm surge and abnormally high waves, causing beach erosion and coastal inundation at high tide.
How long does an east coast weather bomb usually last?
The system typically remains dangerous for 24 to 36 hours as it moves southeast across the Tasman. Conditions begin to ease once the low moves further offshore and the pressure gradient relaxes.
Is a weather bomb the same as a cyclone?
No. A weather bomb is a mid‑latitude cyclone, while tropical cyclones form over warm ocean waters north of about 25°S. The bomb can still produce similar wind and rain damage, but it does not have a warm core.
Should I prepare for power outages and road closures?
Yes. The Bureau of Meteorology advises securing loose outdoor items, charging devices and checking live warnings. Stay indoors during the peak of the storm and avoid driving through floodwater.
Sources
For the latest updates on this system and other severe weather, see our Australia weather hub and Severe Weather Warning page.