Snow Wales: Derek Brockway's forecastTo play this video you need to enable JavaScript in your browser.This video can not be playedSnow Wales: Derek Brockway's forecastCloseBBC meteorologist Derek Brockway with the weather forecast for Wales for Friday and the weekend.'Rare' red warning of heavy snowSubsectionWalesPublished17 January 2013Shareclose panelShare pageCopy linkAbout sharingRead description