Severe T-Storm Watch for Lake MichiganJune 24th, 2013 at 4:39 pm by Bill Steffen under Bill's Blog, Weather
9:10 pm Quiet along and north of I-94. Severe threat now mainly for NE Indiana and NW Ohio. Some earlier severe reports: Measured Gust to 72 mph Courtland IL, 67 mph at Midway Arpt. in Chicago, 65 mph in Will Co., 61 mph at the National Weather Service in Romeoville, and 52 mph at O’Hare. . Trucks blown over at the Elburn exit on I-80. Estimated gusts to 75 mph at Elburn, 70 mph at Homewood and INverness, 60 mph in Morton Grove and Oak Lawn IL. T-Storms in Ionia, Barry Counties, near Lansing to north of Ann Arbor., ahead of the main show. Storms in MI have heavy rain and should start producing gusty winds. There is a Severe T-Storm Watch for SE Wisconsin, NE Illinois and all of Southern Lake Michigan until 11 PM. Check out the storm reports from the Quad Cities NWS: Gust to 75 mph at Harlan IA, 70 mph at Wapello, Clinton and Audubon IA and at Sterling and Atkinson IL, 68 mph at Moline IL, 71 mph at Davenport IA, 65 mph Iowa City and at Steward IL, possible tornado - trucks flipped on Route 61 north of Muscatine IA, truck flipped from t-storm winds at Jamaica IA, truck overturned in I-74 east of Moline IL, tornado at Stanwood IA and at Walton IL. (7 reports of tornadoes so far) and over 3″ of rain. If you know someone in N. Illinois, NW Indiana or south of I-94 in Wisconsin, let them know that these are heavy duty storms capable of widespread significant wind damage. Check out the following links:
Radars: Grand Rapids (W. Michigan), Northern Indiana, Chicago (NE Illinois), Milwaukee (SE Wisconsin), SE Michigan, Regional Radar and College of DuPage Radar from Chicago. Lightning Data: Lower Michigan, National. Current Weather Observations in Illinois, Wisconsin, Michigan, Indiana. Storm Reports from SPC for today (keep an eye on the linear movement eastward of the severe reports), and severe reports from NW Illinois, NE Illinois, S. Wisconsin. Here’s current severe t-storm and tornado watches in the U.S. and current meso-discussions (heads-up on watches to be issued soon).
Chicago NWS Discussion issued at 5:01 PM EDT: “THE AIR MASS OVER NORTHERN ILLINOIS IN THE PROCESS OF RAPIDLY DESTABILIZING WITH OBJECTIVE ANALYSIS INDICATING MLCAPES LIKELY INCREASING ABOVE 2000 J/KG. SYNOPTICALLY…DEEP LAYER SHEAR IS NOT TERRIBLY IMPRESSIVE…HOWEVER WELL DEVELOPED MCV WITH 50-60KT FLOW NOTED ON KDSM WSR-88D VWP SO IT IS BYOS (BRING YOUR OWN SHEAR) WITH THIS MCS. WHILE DAMAGING WINDS…POSSIBLY FAIRLY WIDESPREAD…WILL BE THE PRIMARY THREAT…THERE HAVE BEEN SEVERAL STRONG MESOVORTICES WITH THIS BOW.
Bill adds…If I were chasing, I’d head toward I-80 SW of Chicago. We should get some rain and thunder up to our area, but severe is most likely W and SW of Chicago. Time to call my mother in Wilmette IL and let her know what’s comin’.
BTW – BOTH the European and the GFS plot have measurable rain in G.R. every day thru Sunday!!