The cold front that sheared apart Karen didn't just get rid of her, it absorbed her energy and moisture. Although Karen is now labeled as a tropical depression and is unorganized she still has plenty of moisture to feed the cold front. You can see on the surface map below the front and what's left of Karen.
Remember how winds move along the front edge of a cold front: towards the low. This means that there's southerly winds drawing up all the moisture inland, and because the cold front has a very large gradient, those winds are very strong.
What does this mean? Well take a look at the models below.
What does this mean? Well take a look at the models below.
These are 12 hour increments starting from today at 2PM EST. You can see just how much moisture the front is drawing in. Add that onto the moisture the atmosphere already had in it, and the front raising that moisture into the upper atmosphere condensing it into heavy rain, and you can see why many areas will have a large amount of rain and strong thunderstorms as it sweeps through, and why we'll have a 1-2 inches of rain in the metro area from Monday afternoon into Tuesday morning, more in areas of thunderstorms.
Good news though? After that it's sunshine into the weekend. Stay dry until then.
-Mike Merin
Good news though? After that it's sunshine into the weekend. Stay dry until then.
-Mike Merin
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