Intellicast Merges with Weather Underground Starting January 17, 2019, we began redirecting traffic from Intellicast.com to wunderground.com. Even though the Intellicast name and website will be going away, the technology and features that you have come to rely on will continue to live on wunderground.com.

Terry Robbins took the organization's name from the lyrics of the Bob Dylan song "Subterranean Homesick Blues," which featured the lyrics "You don't need a weatherman to know which way the wind blows." The lyrics had been quoted at the bottom of an influential essay in the SDS newspaper, New Left Notes.

Surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.

The latitudes of 30N and 30S have semi-permanent high pressure around them known as the subtropical ridge, although their size and exact location varies with the seasons. On the West Coast of the United States, the subtropical ridge expands in spring and brings the region's characteristic rainless summer weather.