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December 25 - ? Arctic Cold


nwohweather

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20 minutes ago, HillsdaleMIWeather said:

Anyone know what's up with the few county wind chill advisory gap in IWX? Everything I looked at shows Advisory level wind chills tonight (including the point forecast) yet they left us out

Todd Holsten at IWX said it is due to an expected weak gradient in that area.

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23 hours ago, XfireLOW said:

There is more cold air on its way south this morning....

The creaks, whines, and thumps cars make at -30 can be quite disconcerting. 

IMG_20180104_064418752.jpg

And here I was thinking my -15F to -20F nights were just about the coldest in the subforum.... I have been watching the true polar cold up along and north of the Iron Range in Minnesota with a hint of jealousy, although I appreciate my car making less concerning sounds in the morning. Hope you are staying safe and warm up there and enjoy the season!

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ORD dropped to -1 unless there was an intra-hour bump, with Kankakee (about 50 miles south of Chicago) down to -15.

Beating a dead horse...but the UHI is ridiculous.  I agree there is probably a bit more snow cover further south of the city...but otherwise the air mass is identical.  It wasn't even a true radiational cooling night...and therefore you'd think the UHI impact would be less...but obviously that didn't happen.

It's really difficult to fathom how much of an impact UHI has.

Tomorrow morning will probably have calmer winds...so the temp differences may be even more extreme.

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1 hour ago, ORDIOWPITMSP said:

And here I was thinking my -15F to -20F nights were just about the coldest in the subforum.... I have been watching the true polar cold up along and north of the Iron Range in Minnesota with a hint of jealousy, although I appreciate my car making less concerning sounds in the morning. Hope you are staying safe and warm up there and enjoy the season!

Around -30 again this morning.  Rumors that it was -38 near Loman, MN yesterday morning, but I don't think that is any official .

Yes, the coldest air is nearly always just north of the Iron Range and east of US 53.  The cold air gets ever so slightly trapped north of the Laurentian Divide ridgelin which keeps the coldest of the cold air north of the Iron Range. 

Possibly 20 degree high by Sunday afternoon for a 50 degree temp swing in about 48 hours to end this cold snap is going to feel tropical.

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22 minutes ago, Chinook said:

Toledo has had 11 straight days under 20 degrees. I don't know if that is a record # of days under 20 degrees. Can anybody find that information?

I will have to look but for Detroit the current record is 11 days set in 1936 & 1979. Today's forecast high is 9. This is the 12th consecutive day we failed to reach 20 and thus a new record will be set! 

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46 minutes ago, Chinook said:

Toledo has had 11 straight days under 20 degrees. I don't know if that is a record # of days under 20 degrees. Can anybody find that information?

I'm not sure abut TOL, but according to the list that Chicagowx posted earlier, FWA has surpassed their record, so I would assume that TOL is right there.

On 12/30/2017 at 7:15 AM, Chicago WX said:

Here are some other top records for consecutive days with a max temp of less than 20º

Chicago: 12 days (Feb 1-12, 1895 and Jan 22 - Feb 2, 1936)

Columbus: 8 days (Jan 10-17, 1893 and Feb 6-13, 1899)

Des Moines: 18 days (Dec 30, 1978-Jan 16, 1979)

Detroit: 11 days (Jan 23-Feb 2, 1936 and Feb 8-18, 1979) 

Fort Wayne: 11 days (Jan 23-Feb 2, 1936)

Green Bay: 21 days (Jan 11-31, 1963)

International Falls: 42 days (Jan 1-Feb 11, 1994)

Milwaukee: 18 days (Jan 27-Feb 13, 1899)

Minneapolis: 39 days (Jan 15-Feb 22, 1936)

Moline: 18 days (Jan 27-Feb 13, 1899)

Peoria: 15 days (Jan 2-16, 1912)

St. Louis: 9 days (Jan 23-31, 1936)

 

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27 minutes ago, Chinook said:

-22 F (-30 C) at Cadillac, MI

KCAD 061335Z AUTO 00000KT 10SM CLR M30/M33 A3042 RMK AO2 T13001334

I see your -22 and raise you -32 in Pellston this morning.

KPLN 061354Z AUTO 00000KT 10SM CLR M36/ A3053 RMK AO2 SLP371 T1361

So cold the dew point can't even register.

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I just checked here:
http://xmacis.rcc-acis.org/#
According to this site, TOL had 12 days ending on 2/19/79.
Xmacis is great, it's what NWS offices use for climate queries. The link obviously works publicly, but it's actually not supposed to be publicly available. I don't think TV Mets here have link to the page even since we frequently get calls about climate queries that can be done on xmacis. I won't tell

Sent from my SM-G935V using Tapatalk

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