Met Éireann has upgraded its weather warning for severe thundrestorms to a Status Orange.
The thunder warning covers Offaly as well as Laois, Longford, Westmeath, Meath, Cavan, Monaghan, Clare, Limerick, Tipperary and all of Connacht.
Met Éireann forecast "widespread thunderstorms with frequent lightning this afternoon and evening."
They said that it could could large amounts of rainfall in a short period of time with spot flooding likely in the affected counties.
The warning is valid from Friday lunchtime until 11pm on Friday night.
If you have a story for us, sports news, an event happening in your area, or if you want to submit pictures or videos, contact the Offaly Express team via email to firstname.lastname@example.org, or through our Facebook.
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.