Lanes have now reopened after an earlier crash blocked a lane of the A303 near Micheldever Station.
One lane was blocked on the eastbound carriageway between Overton Road and the A30.
There were delays of up to 35 minutes at its peak, but they have since subsided.
#A303 Eastbound - All lanes have now been CLEARED between Overton Rd #MicheldeverStation and A30 Stockbridge Rd #NorthWaltham after the earlier incident, delays have eased. pic.twitter.com/D9Sg4iX8EY
— ROMANSE (@ROMANSE) October 20, 2021
It comes as two yellow weather warnings continue in force for Basingstoke and Andover.
The warning for thunderstorms ends across the region at midday, but the yellow warning for rain will continue until 3am on Thursday morning.
The Met Office says: "A brief period of heavy rain, thunderstorms and very gusty winds may cause some disruption on Wednesday morning."
The impact of thunderstorms can include flooding, travel delays, power cuts and tree damage.
The warning is in place across a large patch of the UK, areas including Cardiff, Bath, Plymouth, Birmingham and Peterborough.
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