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Chicago Storm

Mid-July Heat Wave

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8 minutes ago, Chicago Storm said:


That La Crosse combo is bigly.

They’re taking advantage of the valley for DP’s and down-sloping for temps.


.

I always wondered how they tagged 108 in 1995.  Probably the same thing.

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4 minutes ago, A-L-E-K said:

Gonna get outflowed again tomorrow, temps predictably underperforming but dp pooling has been tops.

The 3 km NAM actually brings it through in the wee hours of Saturday morning.  Doesn't really have support but you never know.

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2 hours ago, Hoosier said:

Was outside a little while ago and it actually didn't feel quite as oppressive as I thought it would.  I think the wind helps the comfort level to some extent.  You put 90/80 in calm conditions and that is going to have a different feel, which is what that WBGT index or whatever it was called that LOT posted about the other day was factoring in.

Stay safe.

Working in this sucks, but today isn’t as awful here as forecasted really. Still hot of course. Regardless, good thing I bought a house earlier this year that has a pool. :D

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The 3 km NAM actually brings it through in the wee hours of Saturday morning.  Doesn't really have support but you never know.

3km is lol worthy.


.

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I always wondered how they tagged 108 in 1995.  Probably the same thing.

S and SW winds that day, so that would be my guess.


.

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NegativeEPO isn't gonna like this

Highs:  

ORD:  92

PWK:  94

MDW:  95

And it's not like dews were running super high at ORD either to explain the  cooler temps.  

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3 minutes ago, Hoosier said:

NegativeEPO isn't gonna like this

Highs:  

ORD:  92

PWK:  94

MDW:  95

And it's not like dews were running super high at ORD either to explain the  cooler temps.  

There were a few 93 obs at ORD after the cutoff time for the afternoon climate report, so the high could be 93 if they weren't rounded.  

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MLI only attained 96 today which is kinda meh since they already hit 96 earlier this summer.  The moisture is impressive though.  Heat index of 119 in Muscatine, 115 at Sterling and here.  Like Hoosier mentioned the wind helps it from feeling as bad as it could be out there.

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Been partly cloudy all day with spotty fair weather cumulus and a decent 10-15 mph breeze with gusts so it really wasn't that bad around here.  I thought yesterday was more oppressive with no wind.  Currently 92/75/105

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Maxed at 94 here before the door slammed down on us. Monroe just south of here on Lake Erie was 93/82 at one point.

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STE got 89'ed.  Called it.  (Though a nearby COOP got to 91.)  Now to lament the fact that I'm out-of-state for a rare high-end severe weather outbreak for my area.

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NegativeEPO isn't gonna like this
Highs:  
ORD:  92
PWK:  94
MDW:  95
And it's not like dews were running super high at ORD either to explain the  cooler temps.  

Indeed hit 93 at ORD.

Topped out at 94 here.


.

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0z DVN and ILX soundings show that there are 2 to 3 different inversions at different heights. The lowest inversion is around 900mb, which goes to show why temps didn't exceed the mid 90's anywhere.

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It’s still 86 at ORD and MDW as of midnight.


.

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22 minutes ago, Chicago Storm said:

It’s still 86 at ORD and MDW as of midnight.


.

Any take on how far south the outflow up north is gonna get?

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16 hours ago, zinski1990 said:

I saw a dew point of 86 in lower Michigan. Dont really know if it's legit but still crazy

It's not legit. Some of the ASOSs which are not 1st order stations have erroneously high wet bulb temperatures in moist air masses. But the Monroe (TTF) sensor has been off for quite some time, so it predictably had dew points in the mid 80s yesterday.

DTW soared to a season high of 94, dewpoint 77, before thunderstorms around 3pm cooled temps into the 70s for the rest of the day.

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12 hours ago, Stebo said:

Maxed at 94 here before the door slammed down on us. Monroe just south of here on Lake Erie was 93/82 at one point.

The Monroe dewpoint sensor has been off for some time, see above.

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It wasnt Monroe. I know theirs was high all day too. I believe I saw it in central lower Mich south of Lansing. Probably was another sensor that was off

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12 minutes ago, zinski1990 said:

It wasnt Monroe. I know theirs was high all day too. I believe I saw it in central lower Mich south of Lansing. Probably was another sensor that was off

Just came to edit my post but you beat me to it lol. The 86゚ dewpoint was Marshall. I am not familiar with that station so I cannot say, but I am familiar with Monroe. There was one day I think a week ago or so that Monroe had dewpoints touching 80 when every other station was below 70. To be honest I kept checking the Monroe dewpoint yesterday just to see how high it would go lol, knowing it is not correct, and I expected higher than its peak of 85゚. The highest "official" dewpoints at the nearest first order stations to Monroe were 78° at Toledo and 77° Detroit.  Still, I have a very hard time believing that Marshall dewpoint. Whenever a station is many degrees higher than anywhere surrounding it, it's a red flag.  The closest stations to Marshall- Battle Creek Kellogg, Battle Creek/Kalamazoo, and Jackson, had peak dewpoints of 79, 80, and 79.

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Any take on how far south the outflow up north is gonna get?

Late response, but it ended up making it to about where I thought it would...Through the metro due to the lake enhancement, but not much farther than that.

 

Luckily it moved through very early, and was able to wash our fairly quickly earlier this morning. Cirrus debris from the overnight MCS has cleared the area as well. However, cirrus from the MN/IA/WI could possibly become an issue in a few hours.

 

 

.

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1 hour ago, Chicago Storm said:

Late response, but it ended up making it to about where I thought it would...Through the metro due to the lake enhancement, but not much farther than that.

 

Luckily it moved through very early, and was able to wash our fairly quickly earlier this morning. Cirrus debris from the overnight MCS has cleared the area as well. However, cirrus from the MN/IA/WI could possibly become an issue in a few hours.

 

 

.

Most of the guidance struggled with the southern extent of the outflow boundary, insisting it would stay north of the IL/WI border even on runs from last night.  The 3 km NAM and I think 1 other CAM brought it farther south, but ended up being too aggressive. 

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