4/05/10 NOW: NE,KS,IA,MO,WI,IL,IN

[Mike Smith]

Reflectivities have reached 81 dbZ at times.

Second TOR issued on the Washington Co. cell with strong rotation and right movement. I notice that Mike Phelps has moved into the area.

 

[Scott Olson]

Marysville storm seems to have been on a decline the last couple scans and I'm not seeing any strong signals of cyclic development. Both storms got very deep vertical high reflectivities. I never really noted any consistent tight rotational couplet, there was a nice mid-level meso and surges of inflow and some 20 m2/s2 Vr. Still, very interested to see what the end result was. CINH on the order of 200 j/kg would have been quite a impediment, though the high helicities and moderate instability certainly were formiadable.

Very much on the high end of the MLCINH, though will have to look at the soundings more clearly and get a more exact picture:
http://journals.ametsoc.org/doi/pdf/10.1175/1520-0434(2004)019<0714:EOCALA>2.0.CO;2

 

[MatthewCarman]

That storm north of Chicago is intense. Baseball size hail and 70+ MPH winds have occurred with this storm based on reports. This storm looks like a super cell to me. Another strong storm is in western Illinois with 70+ MPH winds possible.

The storms out west did weaken but SPC is saying a new cluster of storms could erupt and the storms that made it into Iowa are intensifying. SPC is saying there is still a tornado threat in this area.

Edit: That cell north of Chicago has a hook on it I believe but is now moving over the lake.

 

[Kevin Bowman]

That storm north of Chicago is intense. Baseball size hail and 70+ MPH winds have occurred with this storm based on reports. This storm looks like a super cell to me. Another strong storm is in western Illinois with 70+ MPH winds possible.

The storms out west did weaken but SPC is saying a new cluster of storms could erupt and the storms that made it into Iowa are intensifying. SPC is saying there is still a tornado threat in this area.

Edit: That cell north of Chicago has a hook on it I believe but is now moving over the lake.

This storm had me extremely concerned. I am in Skokie and we had marble sized hail but now there are report of 70mph at Ohare and baseball sized hail.

 

[MatthewCarman]

That line west of you in western Illinois is pretty strong to. GRLevel3 currently has 5 TVS signatures on it and it looks like the storms are continuing to fire to the south along a boundary that is coming up on GRLevel3.

Looks like the storm near Red Oak, Iowa is getting stronger to.

 

[Skip Talbot]

Surface obs near the Chicago storm were 56/40 with a North wind. It looks good on radar but its probably just an elevated hailer. I passed a similar storm in Iowa today and it wasn't worth stopping for. That seems to be the dominant storm mode along the warm front tonight.

 

[Kevin Bowman]

Surface obs near the Chicago storm were 56/40 with a North wind. It looks good on radar but its probably just an elevated hailer. I passed a similar storm in Iowa today and it wasn't worth stopping for. That seems to be the dominant storm mode along the warm front tonight.

Yup that is what most of the reports coming out of chicago are with nearly 3 inch hail near Ohare.

 

[Danny Neal]

- Elevated Sup. No tornado threat. Although damaging winds did reach the surface. Storm traveling just north of the WF. More storms back in IA look to impact the same area. Generally focused along the I 88 corridor.

 

[Danny Neal]

GR3 Adam. I changed the color tables to CRH AWIPS. Added streets from GRLevelXStuff.com and customized the rest with Allisonhouse.

Looks like a lull in activity. A meso-vort did significant damage up on the north side just now. Crystal Lake/Marengo area all have pretty bad damage. There was an injury in Crystal Lake from a falling tree....

Just got word that NWS LOT is canceling SVR Watch as ridging between short waves is apparent and the threat for severe weather in N IL is gone, at least until the storms in C IA make their way eastbound.