Northerly winds can also be cold but are not usually as cold as easterly winds. Frosts mainly occur during spells of easterly or northeasterly winds from the inner European continent. The rider can head off in an easterly or westerly direction. South of the subtropical ridge, surface easterly winds (blowing from east to west) prevail. Winds from an easterly direction are usually drier but colder. The current is driven by the prevailing south easterly trade winds. Easterly trade winds pass across the island year round. Voyager data indicate peak easterly winds of . Lastly, the area was dominated by the easterly trade winds. All are somewhat exposed to the easterly winds prevalent in spring. However, they too can see lake-effect snow during easterly or north-easterly winds. The wind blows mostly in an easterly direction. Aziz took an easterly route towards Sylhet. The Silver Road is a central route that comes in from the easterly Wolf Lands. Later, aircraft were sent to search the easterly arc.