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December 31-January 1, 2019 Storm


Hoosier

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Be careful if you're going out for New Year's, even if not in the main snow area.  LOT had this to say:

 

With the surface low associated with this system tracking across
or just east of our eastern cwa Monday, low level winds will back
to the north during the afternoon and evening hours, brining
colder air back into the forecast area. Cooling of the column is
expected to produce a transition from rain back to a
rain/snow/freezing rain mix across north central IL by Monday
evening. Some wet snow accumulation is possible during the evening
across northern IL, though precipitation intensity will diminish
fairly quickly as drier air spreads in aloft. Drying aloft, and
the loss of saturation in the -10C or colder ice nucleation layer
will likely result in precip transitioning to drizzle/freezing
drizzle overnight. Persistent southwest flow aloft, with a moist
boundary layer trapped by a sharp inversion, may result in this
drizzle/freezing drizzle/light snow or flurries persisting through
much of Tuesday. Forecast soundings depict a gradual
cooling/drying trend from the northwest by Tuesday night, which
should bring an end to the precip. This scenario would obviously
have slippery travel impacts during the New Years Eve/Day holiday.

Ratzer
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5 minutes ago, Hoosier said:

Be careful if you're going out for New Year's, even if not in the main snow area.  LOT had this to say:

 


With the surface low associated with this system tracking across
or just east of our eastern cwa Monday, low level winds will back
to the north during the afternoon and evening hours, brining
colder air back into the forecast area. Cooling of the column is
expected to produce a transition from rain back to a
rain/snow/freezing rain mix across north central IL by Monday
evening. Some wet snow accumulation is possible during the evening
across northern IL, though precipitation intensity will diminish
fairly quickly as drier air spreads in aloft. Drying aloft, and
the loss of saturation in the -10C or colder ice nucleation layer
will likely result in precip transitioning to drizzle/freezing
drizzle overnight. Persistent southwest flow aloft, with a moist
boundary layer trapped by a sharp inversion, may result in this
drizzle/freezing drizzle/light snow or flurries persisting through
much of Tuesday. Forecast soundings depict a gradual
cooling/drying trend from the northwest by Tuesday night, which
should bring an end to the precip. This scenario would obviously
have slippery travel impacts during the New Years Eve/Day holiday.

Ratzer

 

Not enough free to drinks in the world to get me to go out on NYE, to many bozos on the road. I got my Jameson and “The truth IPA by flying dog brewery” which is a delicious beer for any IPA lovers! 

 

Looking like another 40 degree rainer tomorrow. Boo. Likely finish December near +5

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Would anticipate that LOT issues a winter weather advisory for Monday morning freezing rain, especially north/west of Chicago.  Cook county/southward is more marginal and may have little or nothing, but northwestern Cook could have issues.  There won't be a whole lot of leeway for evaporational cooling, but dews may be just low enough at onset to try to temporarily counteract the low level warming.

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2 hours ago, Hoosier said:

Would anticipate that LOT issues a winter weather advisory for Monday morning freezing rain, especially north/west of Chicago.  Cook county/southward is more marginal and may have little or nothing, but northwestern Cook could have issues.  There won't be a whole lot of leeway for evaporational cooling, but dews may be just low enough at onset to try to temporarily counteract the low level warming.

LOT afternoon forecast is like I drew it myself lol.  Advisory west and north of Chicago... Cook is also included with the text specifying northwest.  

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2 hours ago, cyclone77 said:

Moderate rain and 34 currently.  Was too warm for freezing rain earlier.  System is quite a bit further west than what models showed yesterday. Now looks like as far west as central Iowa could get a period of snow this afternoon. 

I think the precip onset was delayed too... more time to warm.

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Classic mid-latitude cyclone on satellite, very impressive looking storm imo, sad that this isn't all snow. We had some really heavy rain here in Western IL this morning. I bet we would have a swath of at least 6 to 10 inches if this were all snow. December 31st and we are seeing rain....:(

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Last Tornado Warning for 2018? And in Indiana (and KY) of all places!

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
312 PM EST MON DEC 31 2018

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN HARRISON COUNTY IN SOUTH CENTRAL INDIANA...
  NORTHWESTERN MEADE COUNTY IN CENTRAL KENTUCKY...
  NORTH CENTRAL BRECKINRIDGE COUNTY IN CENTRAL KENTUCKY...

* UNTIL 345 PM EST/245 PM CST/.

* AT 311 PM EST/211 PM CST/, A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO WAS LOCATED 10 MILES NORTH OF HARDINSBURG,
  MOVING NORTHEAST AT 55 MPH.

  HAZARD...TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS, WINDOWS, AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  CORYDON, BRANDENBURG, MAUCKPORT, NEW AMSTERDAM, LODALE, MYSTIC,
  BATTLETOWN, RAYMOND, FRYMIRE AND RHODELIA.
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