Chicago Storm

GFS performance overall has been better than the Euro for a while now. .

89’d at ORD, MDW and here today. .

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89 ORD, 90 MDW and 91 here today. .

89’d at ORD, MDW and here on Saturday. .

Looks like today and tomorrow could end up around or 90+ around the area, before a cooler week coming up. .

This period underachieved a bit and was shorter in duration, due to the continued MCS action and a flatter ridge than expected. It still produced the hottest day of the year though, along with the 80+ DP's and 110-120 HI's. Day........ORD......MDW........Here 17th........92............91..............94 18th........87............87..............87 19th........93............94..............93 20th........95............97..............96 ............................................................ 90+..........3..............3................3

The new GFSs' cold bias has been non-existent for a while now.

Had 40-45mph wind gusts here with the storms/OFB that moved through late afternoon. .

That’s fairly impressive. .

Hit 95 at ORD, 97 at MDW and 96 here today. .

K06C is 96/81/118. .

94 ORD and 95 MDW as of 2PM. PWK peaked at 97 thus far it appears. Looks like up to 1-2 more hours of heating until OFB/storms hit. Should top out between 95-98 area wide. .

It’s gonna be hard for any development to occur until post frontal passage, due to the strong capping...as evident by ~16C at 700mb. .

The MCS along the IA/MN, if it maintains, will be the story for today...and a likely derecho, which would take aim for S WI/N IL. It developed 9-10PM last night near the MT/WY/SD border area. It has had widespread reports, some of which have been sig. .

MLI is already up to 91 as of 10AM. .

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. .

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

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.

Indeed hit 93 at ORD. Topped out at 94 here. .

High and dry. Nothing getting here with 14-16C at 700mb. Mega cap and ridging. .

K06C 95/82/119 now. .

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

3km is lol worthy. .

That La Crosse combo is bigly. They’re taking advantage of the valley for DP’s and down-sloping for temps. .