In a warm front, a mass of relatively warm air pushes against a block of cooler air and is forced to flow up over it.

BBC: Turbulence ahead: Flight heads into storm's heart

The flight criss-crossed a massive warm front edging across the English Channel towards the coast of Cornwall.

BBC: Turbulence ahead: Flight heads into storm's heart

His latest move in this sphere was his sudden invitation to Prime Minister Binyamin Netanyahu to visit him at the White House for a "warm reception" in front of television cameras next Tuesday.

CENTERFORSECURITYPOLICY: Netanyahu, Obama's newest prop

Meteorologists say warm weather from the Gulf of Mexico collided with a cold front from the west, creating volatile conditions.

BBC: Storms leave two dead in Georgia and Tennessee

He said the money would have been better spent on Warm Front grants to improve energy efficiency of homes, a view shared by Friends of the Earth.

BBC: gas ring

He has fond memories of a man he says is warm one to one, if not charismatic in front of crowds.

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Fran Healy admitted it was like playing for his family, and with a little impromptu slide-show of their fifteen months on the road and his concern for the people getting a bit squashed at the front you could see how he got his warm and fuzzy reputation.

BBC: Iced T in the Park

Solid iron shots led to a pair of birdies on the front nine, and with Riviera playing tough in warm, dry conditions on Saturday, he was part of a large group challenging for the lead.

NPR: Haas Shoots 64 To Take Lead At Riviera

Hull had to make a switch shortly before the start of the match when asthmatic Tongan front rower Sam Moa suffered breathing problems in the warm-up.

BBC: Wigan Warriors 14-12 Hull FC