Posted at: 07/09/2013 4:39 PM
Updated at: 07/09/2013 4:40 PM
If you have been paying attention to weather over the past few days than you knew there was a chance for strong to severe storms this afternoon and evening. Well, what happened?!
This is a look at the risk for severe weather as produced by the National Weather Service issued at 1 AM this morning.
Morning rain showers and thunderstorms, which brought up to 1” of rain to portions of the area, stabilized the atmosphere. This made it harder for the atmosphere to become unstable which is necessary for stronger storms. Another necessary ingredient for strong storms is a source of lift. In today’s case that source was a cold front moving from west to east. That cold front moved much faster than anticipated. By noon the cold front was already in eastern South Dakota and by 4 PM was halfway through southeast Minnesota. Without the cold front, storms had almost no chance of forming.
By 11:30 AM the National Weather Service risk for severe weather had drastically changed putting southeast Minnesota and north central Iowa in the clear for severe storms.
Storm Tracker 6 Meteorologist