10:55pm – Storms in eastern Iowa drifting southeast right now. Widespread severe weather is not anticipated for tonight. Should these storms stay together, they will affect Carroll, Whiteside, Jo Daviess, Stephenson, and Lee Counties after midnight. As they move into the I-80/I-88 corridor they will be moving away from the boundary they formed on and should weaken further.
9:15pm – A few showers are just beginning to develop across northeast Iowa. However the atmosphere is not nearly as unstable as it was a few hours ago. Should these grow roots in the unstable airmass and sustain themselves for 30 minutes/1 hour, they may last into the night. Right now it’s questionable (without any sunlight) whether they can propagate into a cluster over the Mississippi River and move southeast. Will continue to monitor. Latest coming up on 10@10.
6:30pm – Increasing severe weather threat for the late-evening and overnight. A Severe Thunderstorm Watch may be issued for parts of eastern Iowa and areas west of I-39 in Illinois this evening. There may be just enough turning with height out in Iowa to support an isolated tornado or two. I believe the threat will move toward the Quad Cities and west-central Illinois as the night progresses.
5:15pm – DEVELOPING STORY: At 12:35pm, during a severe thunderstorm, a person was trapped inside a pole barn when it collapsed near Winslow (Stephenson Co). It happened at State Line Road and Swiss Road. As of 4pm the person was rescued and treated for several fractures. Stay with 13News as we continue to fallow this developing story.
- Oregon reports TSTM WND DMG at 01:20 PM arm sized tree branches down
- Machesney Park reports TSTM WND DMG at 01:08 PM shingles blown off roof. small peach tree snapped off one foot above the ground
- 1 W Kent reports TSTM WND GST of M70.00 MPH at 12:29 PM wind gust measured at 70 mph just west of kent
- Galena reports TSTM WND DMG at 12:00 PM winds estimated to be 60 mph blew down a 3 to 4 inch diameter branch. time estimated
- Belvidere law enforcement reports TSTM WND DMG at 01:50 PM trees and wires down
- 3 S Oregon reports TSTM WND DMG at 01:12 PM along route 2 large healty trees down on road
- WREX reports TSTM WND GST of E60 MPH at 01:10 PM
- Mount Morris reports TSTM WND GST of M66 MPH at 01:17 PM
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(11:56:43 AM) iembot: Storm Prediction Center issues SEVERE TSTM watch till 7pm (Watch Quickview)
(11:55:22 AM) iembot: DVN issues Severe Thunderstorm Warning for Dubuque, Jackson [IA] and Carroll, Jo Daviess, Stephenson [IL] till 1:00 PM CDT
Update – 11:40 am: (11:36:08 AM) iembot: DVN extends area+time of Severe Thunderstorm Watch for Jackson [IA] and Carroll, Jo Daviess, Stephenson [IL] till 1:00 PM CDT
Update – 10:35 am: While it doesn’t include our viewing area, another technical discussion was issued. Click here to read it. It mentions the possibility of an additional weather watch being issued.
Original post: A complex of thunderstorms is barreling southeastward through northeastern Iowa and into southwestern Wisconsin. These storms have been producing winds in excess of 50 mph.
Some weakening has been taking place, although the line of storms is expected to reintensify during the first part of the afternoon near our area. The reason for this is that we’ve been experiencing lots of sunshine all morning, and with dewpoints back into the lower 70s, the atmosphere is becoming increasingly unstable.
We’ll be monitoring the progression of this line of thunderstorms through the rest of the morning. I wouldn’t be surprised if the Storm Prediction Center issues a technical discussion that includes our viewing area within the next hour or so.
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This post was written by Eric Sorensen on July 31, 2008