HillsdaleMIWeather Posted June 18, 2017 Share Posted June 18, 2017 BULLETIN - EAS ACTIVATION REQUESTED Severe Thunderstorm Warning National Weather Service Chicago/Romeoville Il 925 PM CDT SAT JUN 17 2017 The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Southeastern Livingston County in central Illinois... Ford County in east central Illinois... Southwestern Iroquois County in east central Illinois... * Until 1030 PM CDT * At 924 PM CDT, a severe thunderstorm was located near Colfax, or 10 miles southwest of Fairbury, moving east at 40 mph. This is a very dangerous storm. HAZARD...80 mph wind gusts. SOURCE...Radar indicated. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be heavily damaged. Expect considerable damage to roofs, windows, and vehicles. Extensive tree damage and power outages are likely. Link to comment Share on other sites More sharing options...
nwohweather Posted June 18, 2017 Share Posted June 18, 2017 lapes rates have improved slightly from a very weak 5.3 at 18z to modest 6.3 at 00z at ILXLapse rate of 5.3 is considered stable since they must be between 6-10° c/km Link to comment Share on other sites More sharing options...
cyclone77 Posted June 18, 2017 Share Posted June 18, 2017 Followed the supercell from just north of town to southeast of Harmon. It looked pretty decent for a short time a little east of Prophetstown with a nice RFD notch and some weak rotation. For a very brief moment I actually thought the thing was gonna try to produce. Shortly thereafter it became sort of shelfy looking. Was still very impressive to look at, with a big fat/elongated shelf with rapidly rising motion as it trudged along. If we had a little better low-level winds in place I have no doubt this thing would have dropped a fat cone while it was still discrete. North of Tampico. Link to comment Share on other sites More sharing options...
Radtechwxman Posted June 18, 2017 Share Posted June 18, 2017 No good severe storms here but had incredible training with insane rainfall rates and crazy lightning. Got 2.25in of rain. And picked up about 1.10in of that in 10min when that training line first moved in. Some of the heaviest rain I ever seen. Lots of street flooding. Link to comment Share on other sites More sharing options...
Chinook Posted June 18, 2017 Share Posted June 18, 2017 That cloud looks so low, it seems close to the top of the silo. Link to comment Share on other sites More sharing options...
Torchageddon Posted June 18, 2017 Share Posted June 18, 2017 This has been an interesting day for weather (IMBY especially), one of the few of this year. Got 4 thunderstorms and a lot of rain. One of the cells that started near Mildmay (6:40 pm) swiped me and as it did I was watching the sky closely to see if anything good was up. I noticed the weirdest swirling and erratic clouds since the memorable June 22, 2015 event. I didn't see clear rotation but broadly there probably was as the clouds were moving in different directions all over. There were a few points that I wondered if I was peering at a wall cloud or inflow channel. I can't remember the last time I saw so many hook echoes in a cluster north of me, one or two of them looking like a Plains signature. Definitely a tornado somewhere. Northern Grey county went under a tornado warning twice. Then the rain - it rained on and off 8 times in the last 24 hours which shows a wonderfully chaotic atmosphere. I can't remember having rain segments of that number before in a moist unstable regime here. Its absurd that a huge rain system is heading over here from MI after getting soaked. Link to comment Share on other sites More sharing options...
Chicago Storm Posted June 29, 2017 Share Posted June 29, 2017 Forgot to mention... Was on the supercell that moved across Whiteside/Lee/DeKalb/Kane counties in N. IL, though I didn't get on it until DeKalb Co. Storm was fairly outflow dominant while I was on it, as well as before I got on it. Did have a couplet a few times, but all it produced was a wall cloud and nice structure. Link to comment Share on other sites More sharing options...
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