A weather warning from the Met Office has now been extended.
Its amber warning for storms covers Shropshire, Herefordshire, Worcestershire, Birmingham and the Black Country, as well as parts of Staffordshire and Warwickshire.
It's in place till 21:00 and the Met Office says there's a chance of flash floods as well as damage from lightning strikes and strong winds.
It added that power supplies, as well as water and gas could be affected.
The Environment Agency's Dave Throup, based in the region, warned: "Exceptionally powerful thunderstorms could deliver up to 100mm of rain in a couple of hours. If that happens there will be severe impacts."
The lightning over many parts of the West Midlands on Tuesday night proved to be one of the most spectacular in years.
Matt Stanton's slow motion video captured it illuminating the skies over Stourbridge:
The robots use artificial intelligence to identify objects that need regular cleaning, like seats, bike stands or doors.
They then work together to avoid crashing into things or people.
The project, which involves the universities of Leeds and Birmingham, and University College London, was set up in May to look at how robots can help slow the spread of the virus.
Dr Mohammed Shaqura, from the University of Leeds, said: “The aim is to have robots that can regularly disinfect those spaces, doing away with the need for people to clean them and the risks they would face in becoming contaminated themselves.
“We are using machine learning techniques to have the robots fully autonomous, so they "know" which objects need cleaning – and will only require high-level supervision from operators.”
NHS, social care and other front-line workers have been granted the freedom of Dudley for their efforts during the coronavirus crisis, the borough council has announced.
The honour has been granted to NHS staff, public health, adult social care, children’s services, bereavement services and voluntary sector workers.
The decision was made at a full council meeting on Thursday.
The leader of the council Patrick Harley, said: "Whilst the fight against the pandemic is not yet over, we believe it’s important to recognise the continuing efforts of all those people who are helping us all."