Forecast

Australian Government Bureau of Meteorology
New South Wales

TOP PRIORITY FOR IMMEDIATE BROADCAST

Detailed Severe Thunderstorm Warning
for Heavy Rainfall

for parts of Greater Newcastle, Gosford/Wyong, Sydney and Maitland/Cessnock areas.

Issued at 8:00 pm Saturday, 17 January 2026.

Heavy rainfall with thunderstorms about the Sydney and Central Coast.

HEAVY RAINFALL for the following areas:
Maitland/Cessnock, Greater Newcastle, Gosford/Wyong and Sydney
The Bureau of Meteorology warns that, at 7:55 pm, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding were detected near Sydney City, the Sydney Harbour Bridge and Spencer. These thunderstorms are moving towards the northwest to northeast. They are forecast to affect Mona Vale, Calga and Ryde by 8:25 pm and Hornsby, Berowra and Pennant Hills by 8:55 pm.
133 MM OF RAINFALL WAS RECORDED AT PEARL BEACH IN THE 2 HOURS TO 3:43 PM.
93.5 MM OF RAINFALL WAS RECORDED AT ETTALONG IN THE 1 HOUR TO 2:22 PM.
67 mm was recorded at Cronulla South in the 2 hour to 5:35 pm.
58 mm of rainfall was recorded at East Gosford in the 1 hour to 2:55 pm.
56.6 mm of rainfall was recorded at Gosford in the 1 hour to 2:53 pm.
66 mm of rainfall was recorded at Bensville in the 1 hour to 2:49 pm.
57 mm of rainfall was recorded at Kilcare Heights in the 1 hour to 2:39 pm.
65 mm of rainfall was recorded at Woy Woy in the 1 hour to 2:33 pm.
48.5 mm of rainfall was recorded at Kincumber Mountain in the 30 minutes to 2:30 pm.
71 mm of rainfall was recorded at Koolewong in the 1 hour to 2:26 pm.
62.5 mm of rainfall was recorded at Avalon in the 1 hour to 2:13 pm.
Cancellation for the following areas:
Blue Mountains/Hawkesbury

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 Illawarra districts.
Other warnings may be current.

The next warning is due to be issued by 9:00 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.

Australian Government Bureau of Meteorology
New South Wales

TOP PRIORITY FOR IMMEDIATE BROADCAST

Detailed Severe Thunderstorm Warning
for Heavy Rainfall

for parts of Greater Newcastle, Gosford/Wyong, Sydney and Maitland/Cessnock areas.

Issued at 8:00 pm Saturday, 17 January 2026.

Heavy rainfall with thunderstorms about the Sydney and Central Coast.

HEAVY RAINFALL for the following areas:
Maitland/Cessnock, Greater Newcastle, Gosford/Wyong and Sydney
The Bureau of Meteorology warns that, at 7:55 pm, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding were detected near Sydney City, the Sydney Harbour Bridge and Spencer. These thunderstorms are moving towards the northwest to northeast. They are forecast to affect Mona Vale, Calga and Ryde by 8:25 pm and Hornsby, Berowra and Pennant Hills by 8:55 pm.
133 MM OF RAINFALL WAS RECORDED AT PEARL BEACH IN THE 2 HOURS TO 3:43 PM.
93.5 MM OF RAINFALL WAS RECORDED AT ETTALONG IN THE 1 HOUR TO 2:22 PM.
67 mm was recorded at Cronulla South in the 2 hour to 5:35 pm.
58 mm of rainfall was recorded at East Gosford in the 1 hour to 2:55 pm.
56.6 mm of rainfall was recorded at Gosford in the 1 hour to 2:53 pm.
66 mm of rainfall was recorded at Bensville in the 1 hour to 2:49 pm.
57 mm of rainfall was recorded at Kilcare Heights in the 1 hour to 2:39 pm.
65 mm of rainfall was recorded at Woy Woy in the 1 hour to 2:33 pm.
48.5 mm of rainfall was recorded at Kincumber Mountain in the 30 minutes to 2:30 pm.
71 mm of rainfall was recorded at Koolewong in the 1 hour to 2:26 pm.
62.5 mm of rainfall was recorded at Avalon in the 1 hour to 2:13 pm.
Cancellation for the following areas:
Blue Mountains/Hawkesbury

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 Illawarra districts.
Other warnings may be current.

The next warning is due to be issued by 9:00 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.