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Chicago Storm

August 10 Severe Weather

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That small circulation just to the west of KLOT looks like trouble. No obvious TDS but its also got 90kt at 450ft so it's gonna produce damage one way or the other. 

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One of those microscale circulations is just west of KLOT radar, which is estimating 100-105MPH winds 500' above the ground, so likely reaching the surface. KLOT will probably go down if it holds together.

1646150593_ScreenShot2020-08-10at3_31_15PM.thumb.png.68ba2ae4a78cb9ee672982acffad315f.png

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8 hours ago, A-L-E-K said:

our office building recently power washed the exterior masonry and now my window is filthy, going to be upset if it ruins the view of a nice shelf later

The good news is you are about to get your window washed, naturally.

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Quote
 URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 429
   NWS Storm Prediction Center Norman OK
   425 PM EDT Mon Aug 10 2020

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     Northern and central Indiana
     Southwest Lower Michigan
     Far northwest Ohio
     Lake Michigan

   * Effective this Monday afternoon from 425 PM until Midnight EDT.

   * Primary threats include...
     Scattered damaging winds and isolated significant gusts to 80
       mph likely
     A tornado or two possible

   SUMMARY...A long-lived bowing MCS, that appears to have peaked in
   terms of intensity and amplitude of significant severe wind gusts,
   will likely produce scattered damaging winds and isolated
   significant severe gusts as it spreads into Lower Michigan and
   Indiana this evening.

   The severe thunderstorm watch area is approximately along and 60
   statute miles east and west of a line from 40 miles east northeast
   of Muskegon MI to 20 miles south southwest of Indianapolis IN. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU9).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Severe Thunderstorm Watch means conditions are
   favorable for severe thunderstorms in and close to the watch area.
   Persons in these areas should be on the lookout for threatening
   weather conditions and listen for later statements and possible
   warnings. Severe thunderstorms can and occasionally do produce
   tornadoes.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 426...WW 427...WW 428...

   AVIATION...A few severe thunderstorms with hail surface and aloft to
   1 inch. Extreme turbulence and surface wind gusts to 70 knots. A few
   cumulonimbi with maximum tops to 550. Mean storm motion vector
   27050.

   ...Grams

 

ww0429_radar.gif

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8 minutes ago, purduewx80 said:

One of those microscale circulations is just west of KLOT radar, which is estimating 100-105MPH winds 500' above the ground, so likely reaching the surface. KLOT will probably go down if it holds together.

1646150593_ScreenShot2020-08-10at3_31_15PM.thumb.png.68ba2ae4a78cb9ee672982acffad315f.png

Could move in here or very close by if it holds together.  

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Tornado warning north side of Chicago.

Quote
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Chicago/Romeoville
343 PM CDT Mon Aug 10 2020

The National Weather Service in Chicago has issued a

* Tornado Warning for...
  Northeastern DuPage County in northeastern Illinois...
  Northeastern Cook County in northeastern Illinois...

* Until 430 PM CDT.

* At 342 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Elmhurst, moving east at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without
           shelter. Mobile homes will be damaged or destroyed.
           Damage to roofs, windows, and vehicles will occur.  Tree
           damage is likely.

* This dangerous storm will be near...
  Norridge, Elmwood Park, River Forest and River Grove around 350 PM
  CDT.
  Oak Park, Austin, Dunning, Portage Park, Belmont Cragin, Morton
  Grove and Harwood Heights around 355 PM CDT.
  Irving Park, West Town, West Ridge, Albany Park, Logan Square,
  Humboldt Park and Lincolnwood around 400 PM CDT.
  Chicago, Evanston, Lake View, Lincoln Park, Uptown, Rogers Park
  and Edgewater around 405 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Jefferson Park, Stone Park, North Park, Golf, Forest Glen, North
Center, Berkeley, Lincoln Square, Medinah and York Center.

This includes...  Lincoln Park Zoo, Loyola University, Oakton
Community College, Triton College, Northeastern Illinois University,
Northwestern University, and Wrigley Field.

Including the following interstates...
 I-88 near mile marker 140.
 I-90 between mile markers 72 and 84.
 I-94 between mile markers 31 and 48.
 I-290 between mile markers 3 and 16.
 I-294 between mile markers 31 and 48.
 I-355 between mile markers 27 and 30.

 

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Pretty zzzzz up around here. Peak wind gusts up to ~50mph for a short time, with the leading edge of the line.

Looks like severe winds are more localized to where the smaller MV's are located in the line now, compared to the entire line earlier.

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3 minutes ago, Chicago Storm said:

Pretty zzzzz up around here. Peak wind gusts up to ~50mph for a short time, with the leading edge of the line.

Looks like severe winds are more localized to where the smaller MV's are located in the line now, compared to the entire line earlier.

Agreed here too... Wasn’t much but there are odd bits every few minutes with very strong gusts and trees go crazy...

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insane, massive tree damage at my office near ORD, absolutely wild

never seen anything like it

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Looking at recent frames on the infrared satellite, there is a bit of warming with the cloud tops

 

 

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DeKalb seriously lucked out. Windy but only leaves and small twigs down here. I am happy to take the rain and take a pass at days+ without power that people in Iowa are facing. Still ethereal and dark in the cold pool rains/gusts.

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Just now, mjwise said:

DeKalb seriously lucked out. Windy but only leaves and small twigs here. I am happy to take the rain and take a pass at days+ without power that people in Iowa are facing. Still ethereal and dark in the cold pool rains/gusts.

North side of Sycamore got it worse.

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So, for the Chicagoland area today: rampant looting in the early morning, then a large factory fire near O' Hare, now tornado warning with 80+mph winds. 2020 is wild, today, even wilder. 

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UMB Wx and I are camped out in our cars in N Racine County, just off I94 about two miles south of the Milwaukee County border.  Any signs concerning about that radar indicated tornado near Lake Geneva?  We could be in its path but it is no doubt rain wrapped. 

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1 minute ago, purduewx80 said:

DPA gusting to 60MPH now behind the line.

Yea, winds have increased once again here as well.

Gusting 50mph+ here now, which is stronger than the main line.

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Very large limb down off one of my trees. Just missed the house, thankfully. Had a brief uptick in big winds, along with a close lightning strike. Not sure which one got the tree. Pool has a ton of leaves too. Rest of the neighborhood is littered with your usual high wind small limb damage.

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