Severe Thunderstorm Watch

9:20pm - Good news! No additional severe weather watch will be issued this evening. However the storm over Dubuque right now will continue traveling east right along the state line. Gusty winds to 50mph will be possible through the next hour or two. Davenport NWS: The original severe thunderstorm watch will be killed shortly.

9:00pm - Storm Prediction Center: EASTERN IOWA STORMS ARE MARGINALLY SEVERE AT BEST AT THE MOMENT AND WILL BE APPROACHING THE ERN EDGE OF WW 624 BY 0230Z...AND THE POSSIBILITY OF A NEW WATCH FOR PARTS OF SRN WI AND NRN IL IS BEING CONSIDERED.

8:50pm - Storms heading across the Mississippi River already! Some of the distinct cells are moving east at 50-60mph. These storms have a history of producing straight-line winds in excess of 75mph. In Delaware Co., IA a flagpole may have been pulled out of the ground by the wind. Looking at instability there's a slight maximum over Southern Wisconsin from Dubuque to Madison and south to Monroe. Storms over Dubuque County now will likely continue east along the Wisconsin Highway 11 corridor through Grant, Lafayette, and Green Co. through 10pm. Storms south of the IL/WI border will likely decrease in intensity.

8:00pm - A few severe storms are noted on radar around the Cedar Rapids/Waterloo areas. These will continue to move eastward and may reach the Mississippi River by 10pm. Large hail and damaging winds have been reported. Looking at the latest thermodynamic analysis shows the atmosphere west of the MS River to be quite a bit more energetic than over Northern Illinois and Southern Wisconsin. Still, it appears that a few severe storms will be possible in the 10pm-2am timeframe for areas especially south of US20. Will update as new information comes in. -ES

Original Post - A Severe Thunderstorm Watch has been issued for much of Eastern Iowa through 1am Saturday morning. It does include Jo Daviess County. Will be monitoring storms as they progress eastward late tonight.