Australian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Detailed Severe Thunderstorm Warning
for Heavy Rainfall, Large Hailstones And Damaging Winds
for parts of Blue Mountains/Hawkesbury, Wollondilly/Wingecarribee, Greater Wollongong and Sydney areas.
Issued at 3:11 pm Saturday, 13 December 2025.
Severe thunderstorms continue in the Blue Mountains and Illawarra this afternoon.
HEAVY RAINFALL, LARGE HAILSTONES and DAMAGING WINDS for the following areas:
Blue Mountains/Hawkesbury, Sydney, Wollondilly/Wingecarribee and Greater Wollongong
The Bureau of Meteorology warns that, at 3:10 pm, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding, large hailstones and damaging winds were detected near Katoomba, Blackheath and Hill Top. These thunderstorms are moving towards the east to northeast. They are forecast to affect Yerranderie, the Nattai Tablelands and Hazelbrook by 3:40 pm and Picton, Springwood and Londonderry by 4:10 pm.
The State Emergency Service advises that people should:
* Move your car under cover or away from trees.
* Secure or put away loose items around your house, yard and balcony.
* Keep at least 8 metres away from fallen power lines or objects that may be energised, such as fences.
* Report fallen power lines to either Ausgrid (131 388), Endeavour Energy (131 003), Essential Energy (132 080) or Evoenergy (131 093) as shown on your power bill.
* 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.
* Unplug computers and appliances.
* Avoid using the phone during the storm.
* Stay indoors away from windows, and keep children and pets indoors as well.
* For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.
A more general severe thunderstorm warning is also current for parts of the Metropolitan, Illawarra, South Coast, Central Tablelands, Southern Tablelands, Central West Slopes and Plains, South West Slopes, Upper Western, Snowy Mountains and Lower Western districts.
The next warning is due to be issued by 4:15 pm.
Warnings are also available through TV and Radio broadcasts, the Bureau's website at www.bom.gov.au or call 1300 659 210. The Bureau and State Emergency Service would appreciate warnings being broadcast regularly.
Forecast
Wentworth Falls (33.7102°S, 150.375°E, 820m AMSL) set as my default location ›
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7 day forecast
Today: Cloudy. High chance of showers. The chance of a thunderstorm, possibly severe with heavy rain which may lead to flash flooding. Winds W 15 to 20 km/h becoming light in the evening.
Forecast for Wentworth Falls (33.7102°S, 150.375°E, 820m AMSL) Sat Sun Mon Tue Wed Thu Fri Summary
Minimum 12° 14° 11° 9° 9° 10° 16° Maximum 24° 25° 20° 14° 21° 27° 30° Chance of rain 80% 40% 80% 70% 40% 5% 70% Likely amount 5-10mm < 1mm 1-5mm < 1mm < 1mm < 1mm 1-5mm UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme Fire Danger Rating No Rating Moderate Moderate Moderate - - - Frost risk Nil Nil Nil Nil Nil Nil Nil 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm Wind speed 11
(km/h)19
(km/h)18
(km/h)27
(km/h)9
(km/h)19
(km/h)14
(km/h)18
(km/h)12
(km/h)16
(km/h)7
(km/h)18
(km/h)11
(km/h)13
(km/h)Wind direction NW WSW WNW W ENE ESE ESE E E E N ESE WNW SW Relative humidity 59% 53% 78% 40% 75% 53% 91% 73% 81% 47% 61% 30% 47% 33% Dew point 9°C 10°C 12°C 9°C 9°C 8°C 8°C 8°C 8°C 7°C 9°C 7°C 12°C 11°C -
Sunrise and sunset times
Sunrise / Sunset for Wentworth Falls (33.7102°S, 150.375°E, 820m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase New moon First quarter 5:13am EDT 5:42am EDT 8:03pm EDT 8:32pm EDT 1:26am EDT 1:58pm EDT
Waning crescent
New moon Dec 20 First quarter Dec 28 -
Warnings
- Severe Thunderstorm Warning (Heavy Rain, Hail & Winds) Blue Mountains/Hawkesbury, Wollondilly/Wingecarribee, Greater Wollongong & Syd
- Severe Thunderstorm Warning (Heavy Rain, Hail & Winds) Blue Mountains/Hawkesbury, Wollondilly/Wingecarribee, Greater Wollongong & Syd
- Severe Storm Warning (Winds, Hail & Rain), Illawarra, S Cst, C Tablelands, S Tablelands, CW Slopes/Plains, SW Slopes, U Western, Snowy Mtns
- Severe Storm Warning (Winds, Hail & Rain), Illawarra, S Cst, C Tablelands, S Tablelands, CW Slopes/Plains, SW Slopes, U Western, Snowy Mtns
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Temperature for next 7 days
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Rain for next 7 days