Forecast

Australian Government Bureau of Meteorology
New South Wales

TOP PRIORITY FOR IMMEDIATE BROADCAST

Detailed Severe Thunderstorm Warning
for Heavy Rainfall

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

Issued at 7:27 am Wednesday, 18 March 2026.

Slow moving thunderstorms are producing heavy rain along the central NSW coast and western Sydney.

HEAVY RAINFALL for the following areas:
Blue Mountains/Hawkesbury, Maitland/Cessnock, Greater Newcastle, Gosford/Wyong and Sydney
The Bureau of Meteorology warns that, at 7:25 am, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding were detected near Londonderry, Cranebrook and Nords Wharf. These thunderstorms are slow moving. They are forecast to affect Swansea, Lake Macquarie and Wangi Wangi by 7:55 am and Richmond, Belmont and Windsor by 8:25 am.
93 MM WAS RECORDED AT MOSMAN IN 60 MIN TO 3:03 am
64 mm was recorded at Pearl Beach Reservoir in 60 min to 2:27 am
51 mm was recorded at Rose Bay in 30 min to 5:31 am
51 mm was recorded at Allambie in 30 min to 3:04 am
44 mm was recorded at Little Bay in 30 min to 5:07 am
42 mm was recorded at Wahroonga in 30 min to 3:13 am
36 mm was recorded at Shanes Park in 30 min to 6:32 am

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 8:30 am.
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 Blue Mountains/Hawkesbury, Greater Newcastle, Sydney, Maitland/Cessnock and Gosford/Wyong areas.

Issued at 7:27 am Wednesday, 18 March 2026.

Slow moving thunderstorms are producing heavy rain along the central NSW coast and western Sydney.

HEAVY RAINFALL for the following areas:
Blue Mountains/Hawkesbury, Maitland/Cessnock, Greater Newcastle, Gosford/Wyong and Sydney
The Bureau of Meteorology warns that, at 7:25 am, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding were detected near Londonderry, Cranebrook and Nords Wharf. These thunderstorms are slow moving. They are forecast to affect Swansea, Lake Macquarie and Wangi Wangi by 7:55 am and Richmond, Belmont and Windsor by 8:25 am.
93 MM WAS RECORDED AT MOSMAN IN 60 MIN TO 3:03 am
64 mm was recorded at Pearl Beach Reservoir in 60 min to 2:27 am
51 mm was recorded at Rose Bay in 30 min to 5:31 am
51 mm was recorded at Allambie in 30 min to 3:04 am
44 mm was recorded at Little Bay in 30 min to 5:07 am
42 mm was recorded at Wahroonga in 30 min to 3:13 am
36 mm was recorded at Shanes Park in 30 min to 6:32 am

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 8:30 am.
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

Severe Thunderstorm Warning
for Heavy Rainfall

for parts of Hunter, Metropolitan and Central Tablelands Forecast Districts.

Issued at 6:47 am Wednesday, 18 March 2026.

Slow moving thunderstorms are producing heavy rain along the central NSW coast.

Weather Situation
A southerly change has been moving up the coast and combining with a mid level trough to trigger heavy rainfall in a moist, unstable atmosphere.
HEAVY RAINFALL for the following areas:
Hunter, Metropolitan and Central Tablelands
Severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Morisset, Wyong, Penrith, Wallsend, Toronto and The Entrance.
93 MM WAS RECORDED AT MOSMAN IN 60 MIN TO 3:03 am
64 mm was recorded at Pearl Beach Reservoir in 60 min to 2:27 am
51 mm was recorded at Rose Bay in 30 min to 5:31 am
51 mm was recorded at Allambie in 30 min to 3:04 am
44 mm was recorded at Little Bay in 30 min to 5:07 am
42 mm was recorded at Wahroonga in 30 min to 3:13 am

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).

The next warning is due to be issued by 9:50 am.
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

Severe Thunderstorm Warning
for Heavy Rainfall

for parts of Hunter, Metropolitan and Central Tablelands Forecast Districts.

Issued at 6:47 am Wednesday, 18 March 2026.

Slow moving thunderstorms are producing heavy rain along the central NSW coast.

Weather Situation
A southerly change has been moving up the coast and combining with a mid level trough to trigger heavy rainfall in a moist, unstable atmosphere.
HEAVY RAINFALL for the following areas:
Hunter, Metropolitan and Central Tablelands
Severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Morisset, Wyong, Penrith, Wallsend, Toronto and The Entrance.
93 MM WAS RECORDED AT MOSMAN IN 60 MIN TO 3:03 am
64 mm was recorded at Pearl Beach Reservoir in 60 min to 2:27 am
51 mm was recorded at Rose Bay in 30 min to 5:31 am
51 mm was recorded at Allambie in 30 min to 3:04 am
44 mm was recorded at Little Bay in 30 min to 5:07 am
42 mm was recorded at Wahroonga in 30 min to 3:13 am

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).

The next warning is due to be issued by 9:50 am.
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.