As the UK basks in its third heatwave of the summer, the north-east of England and Cumbria has seen a mix of bright sunny days followed by sudden, heavy thunderstorms this season. Our Weather Watchers have been capturing the fast-changing weather.

The National Weather Service released a severe thunderstorm warning at 7:22 p.m. EDT on Friday in effect until 8:15 p.m. EDT for Genesee, Lapeer and Oakland counties.

The National Weather Service issued a report at 7:02 p.m. on Friday for strong thunderstorms until 7:45 p.m. for Geneva County.

Sunday continues the pattern of scattered afternoon thunderstorms, with the Storm Prediction Center noting a marginal risk of severe weather for western New Jersey counties. Heat indices may approach 95 degrees, creating potentially uncomfortable conditions for outdoor activities.

At 6:01 p.m. on Friday, the National Weather Service released a severe thunderstorm warning in effect until 7 p.m. for Middlesex and Worcester counties.

A severe thunderstorm warning was issued by the National Weather Service on Friday at 7:20 p.m. in effect until 7:45 p.m. for Centre, Clinton, Lycoming and Union counties.

The Federal Aviation Administration on Friday afternoon ordered a ground stop for Denver International Airport. All departures to Denver are grounded through 4:15 p.m.

A more serious threat of severe thunderstorms arrives on Monday after widely scattered storms through a mostly sunny weekend in New Jersey.

The National Weather Service issued an updated report at 6:47 p.m. on Friday for strong thunderstorms until 7:30 p.m. for Henry County.

A severe thunderstorm warning was issued by the National Weather Service on Friday at 6:39 p.m. in effect until 7:45 p.m. for Franklin, Hampden and Hampshire counties.

On Friday at 7:56 p.m. a flash flood warning was issued by the National Weather Service in effect until 11 p.m. for Clinton, Lycoming and Union counties.