|Winds south of the cold front in IL are less ideal for |
migration...conditions will improve throughout the state as it
moves south, bring northwesterly winds with it.
Migration at the time of this post.
Notice that movements are heavier
north of the front (See image above),
than below, where winds are less
ideal for migration. Click to
The news gets better in the wind forecast. Northerly winds are forecast to continue at least through midday Tuesday in much of the state, so tonight may be the first night of a couple of days of substantial migration.
To see the magnitude of tonight's migration, check out this live flash animation of the radar: http://bit.ly/17tyHz1 - the column of lines moving west represent the sunset. The more green in the blue, donut-shaped forms, the denser the migration of birds.