This allows for a short period of improved imaging of extremely northerly or southerly sources. Winters are prolonged and are characterized by steady frosty weather and high northerly winds. The port provided shelter for ships from the violent northerly winds. January and February are more cloudy, with occasional cold fronts followed by dry northerly winds. St Andrews has a temperate maritime climate, which is relatively mild despite its northerly latitude. Feng notes that Hong purposely heads north into the northerly wind. In more northerly latitudes, the season starts later and extends into August. Peak Pass is the next most northerly passage across the mountains. Tours has an oceanic climate that is very mild for such a northerly latitude. Other organisations favour more northerly limits for the Southern Ocean. As a result of the moderation and the northerly latitude, summers normally hover around . In more northerly eastern regions, voles continue to be of import. The population density is at its apex on the most northerly part of the island. Forewing length on the other hand increases moving in a northerly direction. Thereafter she began moving with the pack in a northerly direction.