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February 2017 General Discussion


Hoosier

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Stratus/fog hanging in here, but some thinning/breaks not that far away.  Clearly going to take a hit with temps today but quick rise possible if it dissipates.  Looking at 5 min obs, noticed that MLI jumped about 20 degrees in about 35 minutes... quite impressive.

http://www.wrh.noaa.gov/zoa/getobext.php?sid=KMLI

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13 hours ago, cyclone77 said:

23 years ago tonight we were bracing for what would end up being a foot of snow the next day with near blizzard conditions.  Was a great storm.  Tonight we are ready to enjoy mid 70s and full sunshine.  

I remember this well - February 1994 - was a student at NIU.  We had an 8-10" snowfall in mid-Feb, then it warmed up into the 60s a few days later, then this big snowfall on 2/22/94.  That was a decent winter...including the arctic outbreak in mid-Jan.  I think DeKalb had a high/low of -14/-24 on 1/18/94. :)

 

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2 minutes ago, beavis1729 said:

I remember this well - February 1994 - was a student at NIU.  We had an 8-10" snowfall in mid-Feb, then it warmed up into the 60s a few days later, then this big snowfall on 2/22/94.  That was a decent winter...including the arctic outbreak in mid-Jan.  I think DeKalb had a high/low of -14/-24 on 1/18/94. :)

 

Imagine how wonderful geoengineering could be with aerosols. 1994 was Mt. Pinatubo effect.

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That shallow moist layer has had trouble mixing out east of the MS River.



Per most recent ORD aircraft ascent sounding (1946z), it's trying and mixing deeper than just an hour ago but there's still a sharp inversion between just above 910mb and just under 900 mb. +11.1 at 908mb and +13.6 at 903mb. With the limited time left, looks like ORD won't be able to tap into that warmest layer.
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18 minutes ago, RCNYILWX said:

 


Per most recent ORD aircraft ascent sounding (1946z), it's trying and mixing deeper than just an hour ago but there's still a sharp inversion between just above 910mb and just under 900 mb. +11.1 at 908mb and +13.6 at 903mb. With the limited time left, looks like ORD won't be able to tap into that warmest layer.

 

Bummer... was looking forward to a record smashing day around here, lol

Friday record looks to be threatened... and maybe it can find a way to overperform.

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Bummer... was looking forward to a record smashing day around here, lol

Friday record looks to be threatened... and maybe it can find a way to overperform.



Agreed on today, the low clouds and lingering effects really threw a wrench into things for Chicago. 67 is highest it's been and current temp on 1 minute data at ORD. Could still tie or break the record next hour. The wildcard Friday is the warm front position, with 12z runs of the global models shifting southward. 12z Euro gets the warm front to MDW but keeps it south of ORD.
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16 minutes ago, RCNYILWX said:

 


Agreed on today, the low clouds and lingering effects really threw a wrench into things for Chicago. 67 is highest it's been and current temp on 1 minute data at ORD. Could still tie or break the record next hour. The wildcard Friday is the warm front position, with 12z runs of the global models shifting southward. 12z Euro gets the warm front to MDW but keeps it south of ORD.

 

Didn't realize the Euro has the front that far south.  

With an occluding low and a very cold Lake Michigan, it may not be easy to blast that warm front all the way through northeast IL quickly compared to a different synoptic setup.  Guess we'll see.

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