A weather warning has been issued for torrential heavy downpours on the first day of the Lincolnshire Show on June 21.
The Met Office warning is valid for the whole of Lincolnshire from 3am on Wednesday, June 21, lasting until Thursday, June 22.
Bouts of rain, heavy and thundery at times, are predicted to move in from the west to affect parts of northern England from the early hours of Wednesday.
More extensive thunderstorms may then break out over from late Wednesday afternoon onwards into Wednesday night, leading to torrential downpours, frequent lightning and a chance of hail.
This could result in some disruption, more likely from late Wednesday afternoon, which may include sudden localised flooding of transport routes, homes and businesses.
Frequent lightning in association with the heaviest rain may also temporarily disrupt power supplies.
However, many places will likely see little or no impact.
Indeed many parts of the warning area will see dry and sunny weather through much of the daytime on Wednesday.