Such a warming hole has now been detected on the Zugspitze, Germany's highest mountain:

Meteorologist Dominik Jung of the website wetter.net announced that last night, on the Zugspitze the lowest temperature for the end of February in 117 years was measured, minus 30.5 degrees Centigrade. "It was really extreme", dixit Jung.
Al Gore could not be reached for comment. Leonardo di Caprio, currently residing at France's Côte d'Azur, will step in however, once he has recovered from a severe cold.
MFBB.