CheeselandSkies Posted July 17 Share Posted July 17 Timelapse from our former chief engineer's webcam. At 1:31 the inflow band moves overhead and I think a second or two later the tornado spins up toward the right of the frame, he says it didn't form until just out of frame but I think it's just tough to see due to lack of contrast against the rain core from this angle. Then a dramatic RFD clear slot follows as the supercell pushes off to the northeast. 12 Link to comment Share on other sites More sharing options...
WestMichigan Posted July 17 Share Posted July 17 10 hours ago, frostfern said: GRR In addition, at the MCV rotates east into Michigan we will see our deep layer shear increase. Moisture (surface dew points in the 70s), instability (MUCAPE of 2,000-3,000 j/kg) and lift via the MCV along with shear will all be in place this evening. We agree with the slight risk area via SPC given the parameter space this evening. The HREF 4 hour reflectivity max tells the story quite well, in that our diurnal convection will fade into the evening and the focus will shift to the incoming line. The lake is quite warm and we do not expect a decrease in intensity as the lake may actually give the convection as boost. The lift via the MCV will help storms as well. So, bottom line...expecting a line of storms this evening with wind being the main threat. An isolated tornado like what has happened already this afternoon in Wisconsin is certainly possible later this evening in a QLCS mode in areas where flow backs to the southeast or east ahead of the line. Showers and storms sweep out of the CWA by 2am-3am. HREF was wrong. The lake always seems to kill storms during peak heating hours. I got enough drops of rain to leave a few water spots on the windshield, but the pavement was never wet. 1 1 Link to comment Share on other sites More sharing options...
CheeselandSkies Posted July 17 Share Posted July 17 0Z Wednesday (7 PM CDT Tuesday) 3KM NAM valid for 22Z Wednesday (5 PM CDT). Placement of tornadic cells was almost spot-on, but the timing was about 4 hours slower than reality (and much closer to the time of day I would expect tornadic storms). 3 Link to comment Share on other sites More sharing options...
frostfern Posted July 17 Share Posted July 17 4 hours ago, WestMichigan said: I got enough drops of rain to leave a few water spots on the windshield, but the pavement was never wet. I got .33” from early day shower, but it came so fast most of it ran into the storm drains without soaking in. After that it was a few drops, then some rumbles off to the east as the line reformed. There was 1500 j/kg CAPE over the lake (as opposed to 2500 j/kg inland), but it seems lower apparent temperature / higher density over the lake can slow down storm outflow to the point unstable parcels are no longer being lifted enough to reach free convection. That and the line was way out ahead of the MCV / low which the CAMs got wrong somehow. 1 Link to comment Share on other sites More sharing options...
King James Posted July 19 Share Posted July 19 What we thinking Chicago crew Link to comment Share on other sites More sharing options...
A-L-E-K Posted July 19 Share Posted July 19 1 hour ago, King James said: What we thinking Chicago crew Rain and a miss south 1 Link to comment Share on other sites More sharing options...
Malacka11 Posted July 19 Share Posted July 19 Got some ok boomer energy going on this morning at least but 1 Link to comment Share on other sites More sharing options...
hawkeye_wx Posted July 19 Share Posted July 19 We got our first vivid lightning, with loud cracks of thunder, of the year this morning. There was very little wind, though, despite the warning. 2 Link to comment Share on other sites More sharing options...
frostfern Posted July 19 Share Posted July 19 Got two rotating cells here in W Michigan. Ottowa County now severe warned. Newaygo not warned yet. Link to comment Share on other sites More sharing options...
A-L-E-K Posted yesterday at 07:18 PM Share Posted yesterday at 07:18 PM @Malacka11this is your moment 1 Link to comment Share on other sites More sharing options...
Malacka11 Posted yesterday at 07:24 PM Share Posted yesterday at 07:24 PM 11 minutes ago, A-L-E-K said: @Malacka11this is your moment That's crazy bro I was literally pulling up here to post how I'm in Glendale Heights and will therefore be missing the very first direct bullseye of MBY so far this year. Hopefully @Chicago Storm comes through with the shelf pics later 1 Link to comment Share on other sites More sharing options...
Chinook Posted yesterday at 07:41 PM Share Posted yesterday at 07:41 PM Considerable severe thunderstorm warning Link to comment Share on other sites More sharing options...
Chicago Storm Posted yesterday at 07:56 PM Author Share Posted yesterday at 07:56 PM 30 minutes ago, Malacka11 said: That's crazy bro I was literally pulling up here to post how I'm in Glendale Heights and will therefore be missing the very first direct bullseye of MBY so far this year. Hopefully @Chicago Storm comes through with the shelf pics later No quality pictures today, unfortunately. The front sagged through here at ORD just as this stuff got going out west and moved in, so it's a miss south up here. I was watching the cam while it hit down at home. It looks like the best wind missed just south, but the lightning was the best of the year easily... Top shelf CG action. 1 Link to comment Share on other sites More sharing options...
Castaway Posted yesterday at 08:49 PM Share Posted yesterday at 08:49 PM Looked near white out by Lombard/Downers grove area. Had some solid bangers. Probably best storm so far 2 Link to comment Share on other sites More sharing options...
pen_artist Posted yesterday at 09:06 PM Share Posted yesterday at 09:06 PM Lots of branches down here in the Woodridge/DG area. Agreed with above, best storm of year so far 2 Link to comment Share on other sites More sharing options...
Castaway Posted yesterday at 10:59 PM Share Posted yesterday at 10:59 PM Tree down at my old neighborhood in Cicero. Possible lightning strike. Also a gas station blew up on oak park and Ogden in Berwyn. Still going on. People said they heard/felt an explosion all the way near Austin and Ogden. Link to comment Share on other sites More sharing options...
sbnwx85 Posted yesterday at 11:09 PM Share Posted yesterday at 11:09 PM While I was at work, I watched a big storm on radar go over my house. Lots of CG, too. I'm sure my dogs will tell me all about it when I get home. Link to comment Share on other sites More sharing options...
nwohweather Posted yesterday at 11:16 PM Share Posted yesterday at 11:16 PM 7 minutes ago, sbnwx85 said: While I was at work, I watched a big storm on radar go over my house. Lots of CG, too. I'm sure my dogs will tell me all about it when I get home. Looks like the OH/MI border is going to get some solid boomers. More instability and heat this way as well Link to comment Share on other sites More sharing options...
snowlover2 Posted 2 hours ago Share Posted 2 hours ago Tornado warning for Springfield OH. Link to comment Share on other sites More sharing options...
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