A Flood Warning has been issued by the Environment Agency for Spixworth Beck from, and including Horsham St Faith to Crostwick to the north of Norwich.
Flooding is expected for Beck Lane Ford at Horsham St Faith.
The Environment Agency says the general area is also covered by a Flood Alert.
"We are seeing high river levels on the Spixworth Beck due to localised heavy thunderstorms. River levels are likely to continue to rise. Over the next 12 hours the forecast is for further thunderstorms. We are continuing to monitor the situation closely, working alongside partners including the Met Office and local authorities."
Last night's storms have been followed by torrential downpours and flash flooding today. Here are some more of your photos.
The dramatic weather has continued. Fire services have been inundated with reports of flash floods after the afternoon's downpours.
ITV News Anglia's viewers captured last night's spectacular storms as they moved through the region.