Day 41: An Active Pattern Continues
A very active weather pattern continues across the contiguous United States this evening. There are no less than five upper-level lows, two jet streams (Polar and Subtropical), two very well defined warm conveyor belts, and much, much more!
Today’s post is a little bit different than previous posts. Instead of me discussing a map, I’m giving you a chance to test your own skills. Take a minute to try and identify all of these things on your own and then click below for the answer. Good luck!
For those who would like some help, here is an animation of the 24 hours leading up to the image above: 10 February 2010 Water Vapor Loop.
Edit: After being contacted and asked if there were more than the 5 upper-lows / vorticity maximums / shortwave troughs that I have annotated, I have uploaded a new answer key marking the two most commonly identified upper-lows / vorticity maximums / shortwave troughs that I did not have marked in my initial answer key. There could easily be more (such as associated within the warm air advection occurring off the west coast), but I’ve now identified 7 more obvious ones.



