We all know it's going to be cold for the three days but...

The low temperatures are not nearly has bad as what we've already seen. What makes this different is the windchill factor. 

URGENT - WEATHER MESSAGE
National Weather Service Indianapolis IN
932 AM EST Sat Jan 18 2025

INZ021-028>031-035>049-051>057-062>065-072-182245-
/O.CON.KIND.EC.A.0001.250120T0600Z-250120T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-
Johnson-Shelby-Rush-Monroe-Brown-Bartholomew-Decatur-Jennings-
Including the cities of Clinton, Spencer, Crawfordsville,
Indianapolis, Fishers, Delphi, Lafayette, Martinsville, Parker
City, Tipton, Plainfield, North Vernon, Attica, Greenfield,
Fairview Park, Montezuma, Columbus, Williamsport, Greensburg,
Frankfort, Greencastle, Covington, West Lafayette, Carmel,
Franklin, Flora, Union City, Veedersburg, Gosport, Noblesville,
Shelbyville, Rushville, Mooresville, Brazil, Rosedale, Lebanon,
West Lebanon, New Castle, Greenwood, Terre Haute, Farmland,
Bloomington, Zionsville, Winchester, Rockville, Danville, Muncie,
Brownsburg, Nashville, Anderson, and Kokomo
932 AM EST Sat Jan 18 2025

...EXTREME COLD WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT
THROUGH MONDAY AFTERNOON...

* WHAT...Dangerously cold wind chills as low as 25 below zero
  possible.

* WHERE...Portions of central, east central, north central, south
  central, southeast, and west central Indiana.

* WHEN...From late Sunday night through Monday afternoon.

* IMPACTS...The dangerously cold wind chills as low as 20 below zero
  could cause frostbite on exposed skin in as little as 30 minutes.
  Frostbite and hypothermia will occur if unprotected skin is
  exposed to these temperatures.

* ADDITIONAL DETAILS...Very cold wind chills between 10 and 20 below
  zero are also possible on Tuesday and Wednesday.