Thunderstorm warnings cover England and Wales as flooding and large hail threaten travel
The UK Met Office placed much of England and eastern Wales under yellow thunderstorm warnings on Wednesday, with intense rain, large hail, lightning and flash flooding threatening local travel disruption.
In 30 seconds
- Wednesday’s yellow warning runs from 03:00 to 22:00 BST across much of England and eastern Wales.
- The Met Office says intense cells can deliver 20–30mm of rain in under an hour.
- Large hail, frequent lightning and local flash flooding are listed hazards.
- The Environment Agency reported five English flood alerts early Wednesday.
Updated: 26 August 2026, 09:00 CEST
The UK Met Office placed much of and eastern under a from 03:00 to 22:00 BST on Wednesday, 26 August, as heavy rain moved north across the two countries. The agency warned that intense downpours, lightning and large hail posed a risk of flash flooding and travel disruption, although the precise location of the strongest storms remained uncertain.
The Met Office forecast 20 to 30 millimetres of rain in less than an hour in the most intense showers, with 40 to 50 millimetres possible within two or three hours in a few locations. Its detailed warning said hail and frequent lightning would accompany some storms. A separate warning for Thursday covers another slow-moving band of heavy and thundery rain moving north, with prolonged rainfall increasing the flood risk.
England’s reported five flood alerts in force early on Wednesday, including for urban watercourses around Leicester and tributaries in Nottinghamshire. An alert means flooding is possible, rather than already occurring. The rapidly changing nature of thunderstorms means conditions can deteriorate over a small area while nearby places remain dry.
National Rail said services were expected to operate normally but advised passengers to check their entire journey before travelling on Wednesday and Thursday. The operator explained that heavy rain can submerge tracks, damage embankments and interfere with signalling equipment. The Met Office also listed difficult driving conditions, road closures, power cuts and delays to bus and rail services among the warning’s possible effects.
The outbreak follows a warm and humid spell across England and Wales. Met Office forecasters said low pressure and an increasingly unstable atmosphere were allowing showers to strengthen as they travelled north. The shift illustrates a familiar summer hazard: rainfall that is welcome after settled weather can still overwhelm roads and drainage systems when it falls rapidly.
Where this is happening
View on map United Kingdom →The warning does not extend to Belgium, so the Belgian impact is limited mainly to people travelling to or through Britain. Passengers leaving Belgium for UK destinations should check local road and rail conditions for the British part of their journey, particularly where connections continue beyond London.
Forecasters expect unsettled conditions to persist into Friday and the weekend, with further showers and longer spells of rain. The main unknown is where the slowest-moving and most intense cells will develop; updated warnings, flood alerts and transport notices will provide the clearest indication as the system evolves.
What to do
If travelling from Belgium to England or Wales on Wednesday, 26 August, check the Met Office warning map and confirm flight, international rail and onward National Rail services before leaving. Allow extra transfer time, particularly for road or rail journeys during the 03:00–22:00 BST warning period. Avoid driving through standing or moving floodwater and be prepared for poor visibility, lightning and sudden local diversions. Keep alerts enabled because the heaviest rain is expected to be highly localised. Travellers continuing north on Thursday should recheck forecasts as rain is expected to spread farther north.
Impact
Regional — The warning covers broad areas of England and the far east of Wales, while the heaviest rainfall remains highly localised. Thursday’s rain is forecast to spread farther north across the UK.
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- 26 Aug 2026
- Published:
- 26 Aug 2026, 02:00
- Retrieved by ODIN:
- 26 Aug 2026
- Published:
- 25 Aug 2026, 02:00
- Retrieved by ODIN:
- 26 Aug 2026
- Published:
- 26 Aug 2026, 02:00
- Retrieved by ODIN:
- 26 Aug 2026
Voices & reactions
What the main actors are doing
Reported positions, summarised — not direct quotationsMet Office risk assessment
Met Office forecasters emphasise the risk of intense local rainfall, hail, lightning and rapid flooding, while stressing that many places inside the broad warning area will avoid the strongest storms.
National Rail operational position
National Rail expects services to run normally at the outset but advises passengers to check journeys because flooding can affect tracks, embankments, points and signalling with little notice.
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