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December 25 - ? Arctic Cold


nwohweather

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33 minutes ago, RCNYILWX said:

Since we're running well colder than yesterday evening, not sure why lows won't be colder than this morning. Surface analysis places the 1045 mb line into western IL and surface ridge axis will gradually nose east through the night. High center farther west/southwest from southwest IA into northern MO isn't perfect but it should be close enough to offset WAA aloft and allow for colder temps. PNT managed -21 as coldest in LOT CWA last night and I'm thinking low to possibly mid -20s over deeper snow covered areas is attainable. Already -11 at RPJ as of 00z.

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LAF is fluctuating between calm and very light winds on the recent 5 minute obs. Katy bar the door if that happens all night there but may be dealing with at least some light winds at various times given the surface high not quite ideally located.  Just gotta keep the winds down enough to not mix with that warming aloft.

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Maybe somebody can explain this but what is the discrepancy between a lot of the area METARs indicating clear skies, and yet the sky conditions on the COD site show "cloudy" for many locations?  Is it some issue that occurs because of the extremely cold temps?

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31 minutes ago, Sidewinder said:

Indy is 4 degrees away from the record, -12 for Jan 1 and 2. If it reaches -13 before midnight and after midnight does it break both records? 

Yes it would.  Or it might be if it reaches that before/after 1 am eastern because of how the "climate day" works but I can never keep that straight.  

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INZ003>006-008-009-OHZ015-024-025-021300-  
/O.UPG.KIWX.WC.Y.0003.000000T0000Z-180102T1800Z/  
/O.EXA.KIWX.WC.W.0001.000000T0000Z-180102T1800Z/  
LA PORTE-ST. JOSEPH IN-ELKHART-LAGRANGE-NOBLE-DE KALB-PAULDING-  
VAN WERT-ALLEN OH-  
INCLUDING THE CITIES OF MICHIGAN CITY, LA PORTE, SOUTH BEND,   
MISHAWAKA, NEW CARLISLE, WALKERTON, ELKHART, GOSHEN, NAPPANEE,   
LAGRANGE, TOPEKA, SHIPSHEWANA, KENDALLVILLE, LIGONIER, ALBION,   
AUBURN, GARRETT, PAULDING, ANTWERP, PAYNE, VAN WERT, OHIO CITY,   
LIMA, SPENCERVILLE, AND BLUFFTON  
1149 PM EST MON JAN 1 2018 /1049 PM CST MON JAN 1 2018/  
  
...WIND CHILL WARNING IN EFFECT UNTIL 1 PM EST /NOON CST/  
TUESDAY...  
  
* WHAT...DANGEROUSLY COLD WIND CHILLS WILL CAUSE FROSTBITE IN AS  
  LITTLE AS 10 MINUTES OR LESS TO EXPOSED SKIN. EXPECT WIND CHILLS  
  TO DROP TO BETWEEN 25 BELOW ZERO TO 35 BELOW ZERO OVERNIGHT AND  
  PERSIST DURING THE MORNING.  
  
* WHERE...NEARLY ALL OF NORTHERN INDIANA AND PARTS OF NORTHWEST   
  OHIO.  
  
* WHEN...UNTIL 1 PM EST /NOON CST/ TUESDAY. 

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