A trough is an elongated area of low pressure that can stretch for hundreds of miles. When observing an upper-level jet diagram, troughs appear as a “dip” or a “U-shape”. The tilt of the ...

The U shape occurs when the economy experiences a sharp decline in these metrics without a clearly defined trough, but instead a period of stagnation followed by a rise back to its previous peak.

A setup favorable for severe storms looks like it may be on the horizon for Monday, April 28 and Tuesday, April 29. SETUP: The daily chances for rain we've been seeing lately have been a product of ...