Stephen Crabb is a Welsh Office Minister and represents the constituency of Preseli Pembrokeshire, home to Cawdor Barracks.
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Heavy, thundery showers will clear northwards through the morning, allowing it to turn mostly dry and bright for many.
Some locally heavy showers are possible overnight, particularly in the east, where some thundery downpours are possible.
Wayne Pivac praised Scarlets' attacking style as they secured the Guinness PRO12 title with a stunning 46-22 success against Munster.