9/13/10 NOW: NE/KS/IA

[Steve Sempeck]

Red box now up for Omaha and south/west of Platte River. 82 over 70 here in Omaha at 4pm. Storms now popping to west and S of Omaha. Local media has sent us out to an area west and south of Wahoo. Nice little September SVR WX bonus for us here in Nebraska!!

 

[Jason Haller]

Watching that storm that split off and is moving South East. Going against the storm motion right now. Seems to have some rotation in a few radar scans but nothing to write home about. Just has a very interesting storm motion. (guess i am wishcasting a little as right now its the only thing that looks to get close to home for me.)

Looks like a little more that that. Just put out a warning with a spotted funnel.

 

[Jonathan Whitehead]

Report of tornado on the ground near Thompson, NE moving SE toward Hollenburg and Hanover, KS

 

[Jason Haller]

Storm near Concordia, KS is starting to turn and showing some mid level rotation. Could go Tornadic.

 

[jshields]

very impressive cell is finally showing some small signs of weakening in southeast nebraska. storm was a cluster of severe cells about 40 miles west of omaha with 2" hail confirmed, and several times radar was maxed out on reflectivity and showed 4" hail!! they were heading for west omaha before merging, turning SSE, and then accelerating and bowing out. 80+ mph winds and ping pong ball sized hail have been reported across southeast nebraska with some tree and building damage reported in ashland and greenwood nebraska along I-80. storm was also tornado warned for possible brief spin ups along the leading edge. very impressive storm for september in nebraska!

edit: just found some pics of baseball sized hail near wahoo, nebraska about 25 miles west of omaha!!

http://ulocal.ketv.com/_Hail-/photo/10635838/62922.html

 

[Jesse Risley]

As the storms congeal and merge into more clusters and/or lines, the 100 mb MLCAPE remains quite favorable extending into the IA/MO border region, with 700-500 mb lapse rates AOA 7 extending over to the IA border.

SPC Mesoanalysis shows the best H85 winds nudging in along the KS/MO border area (per VAD/profiler), so it would stand to reason that a continuing threat for hail and strong, gusty winds will exist as the storms progress eastward, though the most substantial SVR threat may rapidly lessen in the next few hours as the storms transcend the best bulk shear and encounter an airmass already impacted by ongoing convection across NW MO and SW IA.