An omega block weather pattern on a map of the U.S.

Dear Journey North Readers,

For the past couple of weeks, there has been a weather phenomenon over the country known as an omega block. This happens when there is a high-pressure area sandwiched between two low-pressure areas. The resulting wind flow creates a pattern resembling the Greek letter omega.

21 May 2025

About Weather and Songbird Migration

Weather Forecasts for Migrating Songbirds: Returning March 2025

Dr. David Aborn will return in Spring 2025 to share the connection between weather and bird migration with Journey North. Learn how to read a weather map from a songbird’s point of view and discover how to use the maps to predict when you will see songbirds: Map Primer: How to Read a Weather Map from a Songbird’s Point of View.