Chicago Storm

10-15C at 700mb is just about as bad as it gets. There will probably be some t’storms that develop, as cooling occurs aloft... But any severe threat will probably be confined to a small portion of WI/MI, and remain relatively minor. .

About as DOA as DOA can get. .

Tomorrow looks like a classic day in which morning activity does not clear soon enough and lingers a bit too long, which will hinder cold frontal activity for later in the day. Looks like a marginal risk kind of day. .

Drought buster... .

Likely have seen the last 90+ day until next year. Pattern the next 2 weeks suggests an average to below average regime, and after that it’s already late Sept and becomes increasingly difficult.

city dweller views are obvi skewed. .

87 now. Gonna be a close one. .

86 now. Looks like it’ll pass ORD by 1:30, so probably will end up being just an hour or so too fast for 90+. Should get to at least 88 though.

I’m guessing it might have been enough to keep some of the southern portions of D1 in D0, but that’s probably about it. .

It's like the weather followed the flip of the calendar to a T.

The sensor was moved many years ago, and it's probably in one of the better possible areas it can be at this time. The NW/W/SW side of the airport has the most bits and pieces of open land at this time, and even that is going to vanish eventually. After Route 390, I-490 and the new terminal are fully complete several years from now, there really won't be a "good" place for the ASOS. I'm guessing that is when ORD will have a shot to overtake MDW as the consistently warmer location. It's all relative really. ORD was 76.7 this summer and MDW was 76.4...So MDW still would have tied the record. If you dig into it even further, in 2012 ORD was 76.1 (now 4th warmest summer), but MDW was 77.3...which would have blown away the old 1921 record and new 2020 record for warmest summer. Re: Jan 2019 cold...ORD was right on par with MDW and PWK for low temps during that time. The coldest readings were in the usual cold spots, outside of the immediate metro.

The sensor is fine. However, construction this year has been on the uptick on the west side of the airport, as work on the eastern end of Route 390 has increased. There is also preliminary stuff beginning for I-490 on the NW/W/SW side of the airport. Lastly and possibly more importantly, there has been work this summer pretty much right where the sensor is, with a lot of bare ground in the area. .

Between 10-15 times from what I gather.

Lastly, overall stats... Warmest summer on record, along with a top 10 warmest June/July/August and a top 10 driest August as well.

Looks more like it ended up <0.15" for most of the area. The exception being that narrow swath you mentioned, which looks to have stayed along/south of I-80...0.50-1.50" there.

High temps... More noteworthy overall than low temps from the previous post. The amount of days with 85+ highs and 80+ highs was towards the top of the list each month. Record most 85+ and 80+ days in a summer, and 10th most 90+ days in summer.

Gonna end up with <0.10" for most areas.

Will start with low temps... A few top 10's and top 5's occurred with with a few of the stats. Most interesting/noteworthy was the amount of days 70+ low temps and the 3rd most days with 65+ lows on record, both for summer overall.

Gonna split things in multiple posts by lows, highs and monthly/seasonal...

katodog .

I have a ton of stats I’ve compiled, which will be posted tomorrow. I’m sure Hoosier will have stuff to add as well. .

The MLI total is incorrect, due to the sensor going out during the derecho.

Ended up missing it, with a 79. Tomorrow will do it though.

0.61" of rain here since July 30th. 0.89" at ORD during that same period.

It indeed was, but there are many more as well. .