Severe Thunderstorm Warning for NSW
Australian Government Bureau of Meteorology
New South Wales

TOP PRIORITY FOR IMMEDIATE BROADCAST

Detailed Severe Thunderstorm Warning
for Intense Rainfall

for parts of Gosford/Wyong and Sydney areas.

Issued at 2:56 pm Saturday, 17 January 2026.

INTENSE RAINFALL WITH THUNDERSTORMS NORTH OF SYDNEY AND SOUTHERN CENTRAL COAST.

INTENSE RAINFALL for the following areas:
Gosford/Wyong and Sydney
The Bureau of Meteorology warns that, at 2:55 pm, VERY DANGEROUS THUNDERSTORMS likely to produce intense rainfall that may lead to dangerous and life-threatening flash flooding were detected near Terrigal and Palm Beach. These thunderstorms are slow moving. They are forecast to affect Gosford, Brooklyn and Umina by 3:25 pm and Woy Woy, Berowra and Somersby by 3:55 pm.
Another severe thunderstorm likely to produce heavy rainfall that may lead to flash flooding was detected near Dee Why. This thunderstorm is moving towards the northwest. It is forecast to affect Manly and Frenchs Forest by 3:25 pm and St Ives by 3:55 pm.
82.5MM OF RAINFALL WAS RECORDED AT PEARL BEACH IN THE 1 HOUR TO 2:34 PM.
91.5MM OF RAINFALL WAS RECORDED AT ETTALONG IN THE 1 HOUR TO 2:19 PM.
62.5mm of rainfall was recorded at Avalon in the 1 hour to 2:13 pm.

The State Emergency Service advises that people should:
* Keep clear of creeks and storm drains.
* Don't walk, ride your bike or drive through flood water.
* If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
* Stay indoors away from windows, and keep children and pets indoors as well.
For emergency help in flood and storms, ring the SES on 132 500.
Stay updated on the Hazards Near Me NSW app or the ACT ESA website (https://esa.act.gov.au).
A more general severe thunderstorm warning is also current for parts of the Hunter, Metropolitan and Central Tablelands districts.
Other warnings may be current.

The next warning is due to be issued by 4:00 pm.
Check https://www.bom.gov.au/weather-and-climate/warnings-and-alerts. Warnings are also available through TV and Radio broadcasts or call 1300 659 210. The Bureau and State Emergency Service would appreciate warnings being broadcast regularly.


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