Sunday evening weather update



10:25pm Update: The Tornado Watch has just been canceled for Winnebago, Boone, Ogle, Lee and DeKalb counties.  Heavy rain will be biggest threat tonight through Monday morning.

Very heavy rainfall will continue to push east over the next hour.  Watch for ponding on the roads if you're out early Monday morning.





Rainfall amounts over the past 24 hours. 

9:45pm Update:  The tornado watch has been canceled for Carroll and Whiteside counties, along with Jo Daviess and Stephenson counties.  Additional showers moving through Northern Illinois will keep the watch going a little further east this evening.



















While the tornado threat this evening is low, it's not zero.  And storms that continue to enter into Northern Illinois could interact with the warm front that is currently just south of Rockford.  Because of that, both the Chicago National Weather Service and Storm Prediction Center feel it is important to hold on to the tornado watch a little longer this evening.

As you head to bed this evening, make sure you have a way to receive warnings should they be issued.  I'll be here until the last county is dropped from the watch tonight!

8:45pm Update: The Tornado Watch has been canceled for Jo Daviess and Stephenson counties in Northwest Illinois. 







A brief tornado was reported earlier this evening in Eastern Iowa, but those storms are moving more north than east at the moment.  There was also a funnel cloud reported NW of Davenport, IA shortly before 7:30pm.

Closer to home, there are no active warnings as scattered thunderstorms will continue to develop through the evening.

Storm now North of Rochelle (Ogle County) continues to show weak rotation aloft and remains near the warm front.  Will continue to monitor very closely, but could be some stronger wind gusts associated with it.










Technical discussion regarding severe potential this evening from the Storm Prediction Center.  Isolated tornado threat continues along warm front now just south of Rockford.

http://www.spc.noaa.gov/products/md/2015/md0747.html

6:40pm Update: Currently on the Tornado Watch remains in effect, but storms that move through will be very efficient rain produces with a cell moving through Stephenson County from Pearl City to Freeport to Ridott, and heading North.  This will produce very heavy rain in a short amount of time.  Ponding on the roads will be possible with radar estimated rainfall rates of over an inch per hour!

A Tornado Watch has been issued for Jo Daviess, Stephenson, Carroll, Whiteside, Winnebago, Boone, Ogle, Lee and DeKalb counties until 1am Monday morning.

Thunderstorms are starting to increase in coverage this evening and will produce very heavy rainfall and gusty winds.  Also, a warm front lies just north I-88 with a very warm and humid air mass behind. 

It is along this warm front that we have to watch storms very closely for any signs of broad rotation.  There have been a few storms just to the south of the immediate First Warn viewing area that did have some rotation within them, and there was a cell just to the east of Amboy, IL (Lee County) that had weak rotation as well.

If the rotation holds on long enough as the cells interact with the warm front, there could be isolated tornadoes that form.  As of right now, there are no active warnings out - just the Tornado Watch.

Remain weather aware and continue to check back for the latest updates!