MADRID — A winter storm lashed much of Spain for a third day today, leaving 200,000 people without electricity, schools closed and roads blocked by snow as it killed four people.

Massive waves and gale-force winds smashed into seafront towns, damaging many shops and restaurants.

Much of the northeastern province of Gerona was without electricity today because of a fault in the power connection with France, emergency services said on their Twitter account.

Traffic authorities said dozens of roads remained impassable because of the snow, including the A7 highway between the northeastern town of Figueres and the French border.