Tens of thousands without power in Victoria, homes damaged after furious storm rips through the state

Tens of thousands of people across Victoria are without power and trees have fallen into homes after wild weather and lightning strikes wreaked havoc across the state.

More than 13,000 homes are without power from Melbourne to regional Victoria due to multiple lightning strikes recorded since midnight.

The wild weather also prompted authorities to issue a "high risk" warning for thunderstorm asthma in parts of the state today.

READ MORE: Far North Queensland residents bracing for impact of tropical cyclone

Thunder, lightning and heavy rain inundated Melbourne with water, following flash flooding overnight.

A driver became stuck in floodwaters at the Dudley Street underpass in Docklands.

In regional Victoria, a storm cell that developed over Barwon Downs caused four trees to crash into one home.

The damage caused broken windows and cracked walls, as trees smashed through the weatherboard structure, and onto the family car.

READ MORE: Parents of toddler face court for killing top Adelaide doctor

"I thought I was Dorothy in the Wizard of Oz, waiting for the house to be blown away," resident Rachel Kettle told 9News.

"My neighbours across the road have got sheets of tin up their trees 30m in the air."

READ MORE: Jimmy Barnes to undergo open heart surgery as bacterial infection spreads to heart

Meanwhile, thousands of residents remain without power in Melbourne and regional Victoria, after the wild weather caused outages across the state.

According to Powercor, 13,800 people were without power at Ardeer, Shepparton and Swan Hill.

Ausnet also confirmed 24,000 people were without power at Officer, Benalla, Wangaratta, Lang Lang and Seymour.

There were a further 500 customers without power at West Footscray and Maidstone.

READ MORE: Garbage truck driver killed after crash near Victorian and NSW border

Earlier, authorities sent a warning to hay fever and asthma sufferers.

Forecasts of high grass pollen levels and thunderstorms with strong winds in the Central, Westand South Gippsland districts have sparked the warning from the state's Chief Health Officer Dr Clare Looker.

There is a moderate risk of thunderstorm asthma in place for the Mallee, Wimmera, South West, North Central, Northern Country, North East and East Gippsland districts.

Melbourne experienced the world's largest epidemic thunderstorm asthma event in November 2016 when 10 people died after developing breathing difficulties.

More than 200 people were hospitalised last month after the state experienced high grass pollen levels and thunderstorms.

Call Nurse on Call on 1300 60 60 24 or see your local doctor if you require medical advice.

Call triple zero immediately if someone is not breathing, if their asthma suddenly becomes worse or is not improving, or if the person is having an asthma attack and a reliever puffer is not available.