Monday, September 19, 2016

Timing Out Severe Threat

We are monitoring the weather closely this afternoon as severe weather is likely across portions of the Stateline. The radar is beginning to show signs of what is to come this evening. In Iowa, which is where the storms will initially develop, a storm ha already developed and strengthened rapidly. That trend will continue in the red oval through the remainder of the afternoon and evening. Storms will strengthen very fast; many will turn strong to severe.
A Severe Thunderstorm Watch is already in effect for Walworth, Green and Rock Counties in southern Wisconsin until 8 PM. A Tornado Watch is likely to be issued by 4 PM for eastern Iowa and far northwestern Illinois. That is in anticipation of severe thunderstorms developing and posing a large hail risk and an isolated tornado risk across east-central Iowa into the northwest corner of Illinois. The timing will likely be after 5 PM for southern Wisconsin and far northwest Illinois (Jo Daviess County). It's important to remember that just because no watch is out for your particular county does not mean there is no severe threat. There is a risk of severe thunderstorms for the entire area, but the highest threat exists in southern Wisconsin, Jo Daviess, Stephenson, Carroll, and Whiteside Counties. Other locations could see a strong or severe thunderstorm as well through the evening, but the threat is lower due to less favorable severe weather parameters. Be sure to follow our Twitter and Facebook pages for updates!

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