Update: Tuesday's severe storm potential

11:00pm Update: All severe watches/warnings have now expired for the Stateline. A few lingering storms are still possible later tonight, but will stay below severe levels.

10:25pm Update: Severe T-Storm Warning for Ogle until 11:00pm. Half dollar-sized hail possible.

9:10pm Update: Severe T-Storm Warning for western Ogle until 10:00pm. Quarter-sized hail possible.

8pm Update: Severe Thunderstorm Watch continues for northern Illinois and southern Wisconsin until 11pm. 

Active severe thunderstorm warnings at the moment remain in Jo Daviess and Carroll counties.  Currently watching the storm northwest of Savanna which has shown some signs of weak rotation.  We'll continue to monitor this storm as it moves to the east.

Severe Thunderstorm Warning for eastern Ogle and western DeKalb counties until 7:15pm.  Severe Thunderstorm Warning for Winnebago County until 7:15pm.  Storm moving into DeKalb County has had a history of producing large, damaging hail.  Hail up to golf ball sized has been reported. 

The storm moving through Winnebago County will be capable of producing quarter sized hail.  Stay indoors and away from windows.

Severe Thunderstorm Warning for Stephenson County until 6:15pm.  Storm was locted near Nora and moving east at 30 mph.  Areas affected will be Lena, Cedarville, Dakota, Orangeville, Winslow, Dakota, Lake Summerset and Dakota.







Severe Thunderstorm Warning issued for western Jo Daviess County until 5:15pm.  Storm is moving east at 25 mph.



Storms starting to fire along the cold front near the Wisconsin/Illinois border.  The storm near Galena and Scales Mound will be capable of producing half inch diameter hail.

Severe Thunderstorm Watch issued until 11pm for the following counties: Green, Rock and Walworth in southern Wisconsin and for Jo Daviess, Stephenson, Carroll, Whiteside, Winnebago, Ogle, Lee, DeKalb, Boone and McHenry counties in northern Illinios.








3:00pm Update: Mesoscale discussion out from the Storm Prediction Center concerning possible watch this afternoon.

Read the full discussion here

2:00pm Update: The threat for strong to severe storms remains going into Tuesday evening.  Mainly clear skies through the morning and afternoon has built up instability across N. IL and S. WI.  As of right now, two places for possible storm development look to be likely.  The first in southern Iowa closer to low pressure and the second across Wisconsin near the cold front.  We've likely got at least a few more hours before any storms begin to fire with the best chance for storms locally after 5pm.  Biggest risk still remains large hail with any individual storms that may form along with strong, damaging winds.  While the tornado threat is low, it isn't zero.  The window for any possible tornado producing storms will be early, followed by the wind threat late this evening.  We'll continue to provide updates right here, as well as on Facebook and Twitter, as needed.

For the full discussion from the Storm Prediction Center regarding the storm potential later today, click here.




Previous discussion:



As Meteorologist Brandon Arnold mentioned yesterday, the threat for strong to severe thunderstorms remains for this afternoon and evening. The Storm Prediction Center has us under a slight risk for severe weather. Storms look to develop right over or very near the Stateline, as early as 3pm or 4pm, but likely between 5pm and 7 pm.

 For this afternoon, a strong southerly wind will bring in moisture, which will help raise dew points into the low 60's. With temperatures in the upper 70's to low 80's there should be enough instability to trigger a few pop-up storms in the afternoon.

Late this afternoon, storms will develop right along the cold front that will move through this evening. The main concern with these storms will be the threat of strong winds and hail.

The cold front will sag just to our south late Tuesday and into Wednesday morning. This will shift the threat for thunderstorms to our south near I-88 Wednesday afternoon