Alert archive / Indiana / Wind Chill Warnings in 2018

Wind Chill Warning 1, NWS Indianapolis, IN

January 1, 201820 counties in Indiana

NWS Indianapolis, IN issued this wind chill warning at Jan 1, 2018, 3:38 AM EST for 20 counties in Indiana. It took effect at Jan 1, 2018, 7:04 PM EST. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 1, 2018, 3:38 AM EST (08:38 UTC)
In effect from
Jan 1, 2018, 7:04 PM EST
Expired
Jan 2, 2018, 1:00 PM EST
In force
18 hr
Issued by
NWS Indianapolis, IN

Counties Boone County, IN, Carroll County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Madison County, IN, Marion County, IN, Montgomery County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Warren County, IN

The radar

The Indianapolis radar (KIND), 44 km from the middle of the area, began a volume at 08:38 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.6 hours before the alert went out and 189 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2018-01-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2018-01-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -76 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
-76 m²/s²
0-3 km storm-relative helicity
-17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

901 
WWUS43 KIND 010838
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
338 AM EST Mon Jan 1 2018

INZ021-028>031-035>049-011645-
/O.NEW.KIND.WC.W.0001.180102T0300Z-180102T1800Z/
/O.EXT.KIND.WC.Y.0002.000000T0000Z-180102T0300Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
338 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 10 PM EST THIS
EVENING...
...WIND CHILL WARNING IN EFFECT FROM 10 PM THIS EVENING TO 1 PM
EST TUESDAY...

* WHAT...Dangerously cold wind chills expected. The dangerously
  cold wind chills will cause frostbite in as little as 10 minutes
  to exposed skin. Expect wind chills to range from 10 below zero
  to 30 below zero. 

* WHERE...Approximately along and north of Interstate 70.

* WHEN...Wind chills will be dangerous until 1 PM EST Tuesday,
  with the coldest values from 10 PM this evening 10 am EST
  Tuesday. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ051>057-011645-
/O.EXT.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
338 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 below zero to 25 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-011645-
/O.EXT.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
338 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 0 to 25 below zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind
7 follow-up statements
582 
WWUS43 KIND 011452
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
952 AM EST Mon Jan 1 2018

INZ021-028>031-035>049-012300-
/O.CON.KIND.WC.W.0001.180102T0300Z-180102T1800Z/
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T0300Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
952 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 1 PM EST TUESDAY...

* WHAT...Dangerously cold wind chills expected. The dangerously 
  cold wind chills will cause frostbite in as little as 10 minutes
  to exposed skin. Expect wind chills to range from 10 below zero
  to 30 below zero.

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

* WHEN...For the Wind Chill Warning, from 10 PM this evening to 
  1 PM EST Tuesday. For the Wind Chill Advisory, until 10 PM EST 
  this evening.

* ADDITIONAL DETAILS....

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ051>057-012300-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
952 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 below zero to 25 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-012300-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
952 AM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 0 to 25 below zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind
503 
WWUS43 KIND 012023
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
323 PM EST Mon Jan 1 2018


INZ021-028>031-035>049-020430-
/O.CON.KIND.WC.W.0001.180102T0300Z-180102T1800Z/
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T0300Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
323 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...
...WIND CHILL WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 1 PM EST TUESDAY...

* WHAT...Dangerously cold wind chills expected. The cold wind 
  chills will cause frostbite in as little as 10 minutes to 
  exposed skin. Expect wind chills to range from 20 below zero to 
  30 below zero.
 
* WHERE...Portions of central, east central, north central and 
  west central Indiana.

* WHEN...For the Wind Chill Warning, from 10 PM this evening to 
  1 PM EST Tuesday. For the Wind Chill Advisory, until 10 PM EST 
  this evening.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ051>057-020430-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
323 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 below zero to 25 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST Tuesday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-020430-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
323 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 to 25 below zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST Tuesday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind

Ryan
604 
WWUS43 KIND 020004
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
704 PM EST Mon Jan 1 2018

INZ021-028>031-035>049-020815-
/O.CAN.KIND.WC.Y.0002.000000T0000Z-180102T0300Z/
/O.EXT.KIND.WC.W.0001.180102T0004Z-180102T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
704 PM EST Mon Jan 1 2018

...WIND CHILL WARNING NOW IN EFFECT UNTIL 1 PM EST TUESDAY...
...WIND CHILL ADVISORY IS CANCELLED...

* WHAT...Dangerously cold wind chills expected. The dangerously
  cold wind chills will cause frostbite in as little as 10 minutes
  to exposed skin. Expect wind chills to range from 25 below zero
  to 35 below zero.

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

* WHEN...Until 1 PM EST Tuesday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

$$

INZ051>057-020815-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
704 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 below zero to 25 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST Tuesday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-020815-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
704 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills to range from 15 below zero to 25 below 
  zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST Tuesday.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind

Ryan
720 
WWUS43 KIND 020201
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
901 PM EST Mon Jan 1 2018


INZ021-028>031-035>049-021100-
/O.CON.KIND.WC.W.0001.000000T0000Z-180102T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
901 PM EST Mon Jan 1 2018

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Dangerously cold wind chills expected. The dangerously 
  cold wind chills will cause frostbite in as little as 10 
  minutes to exposed skin. Expect wind chills to range from 25 
  below zero to 35 below zero. 

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

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

$$

INZ051>057-021100-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
901 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 below zero to 25 
  below zero. 

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-021100-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
901 PM EST Mon Jan 1 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST TUESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 below zero to 25 
  below zero. 

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana. 

* WHEN...Until 1 PM EST Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$
162 
WWUS43 KIND 020803
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
303 AM EST Tue Jan 2 2018

...Dangerous Wind Chill Across Central Indiana...

INZ021-028>031-035>049-021615-
/O.CON.KIND.WC.W.0001.000000T0000Z-180102T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
303 AM EST Tue Jan 2 2018

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Dangerously cold wind chills expected. The dangerously 
  cold wind chills will cause frostbite in as little as 10 
  minutes to exposed skin. Expect wind chills to range from 10 
  below zero to 30 below zero.

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

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

$$

INZ051>057-021615-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
303 AM EST Tue Jan 2 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 below zero to 25 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-021615-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
303 AM EST Tue Jan 2 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 0 to 15 below zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind
795 
WWUS43 KIND 021451
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
951 AM EST Tue Jan 2 2018

...Dangerous Wind Chill Across Central Indiana...

INZ021-028>031-035>049-021800-
/O.CON.KIND.WC.W.0001.000000T0000Z-180102T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
951 AM EST Tue Jan 2 2018

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Dangerously cold wind chills expected. The dangerously 
  cold wind chills will cause frostbite in as little as 10 
  minutes to exposed skin. Expect wind chills to range from 10 
  below zero to 25 below zero.

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

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frost
bite can occur quickly and even hypothermia or death if
precautions are not taken.

$$

INZ051>057-021800-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-
Including the cities of Terre Haute and Shelbyville
951 AM EST Tue Jan 2 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 below zero to 20 
  below zero.

* WHERE...Portions of central and west central Indiana.

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

INZ060>065-067>072-021800-
/O.CON.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, 
Bedford, and Seymour
951 AM EST Tue Jan 2 2018

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. The cold wind chills will
  cause frostbite in as little as 30 minutes to exposed skin.
  Expect wind chills as low as 15 below zero.

* WHERE...Portions of central, south central, southeast and 
  southwest Indiana.

* WHEN...Until 1 PM EST this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

For more information from the National Weather Service visit
http://weather.gov/ind
546 
WWUS43 KIND 021805
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
105 PM EST Tue Jan 2 2018

INZ021-028>031-035>049-021915-
/O.EXP.KIND.WC.W.0001.000000T0000Z-180102T1800Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Boone-Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-
Putnam-Hendricks-Marion-Hancock-Henry-
Including the cities of Lafayette, Frankfort, Kokomo, 
Crawfordsville, Anderson, Muncie, and Indianapolis
105 PM EST Tue Jan 2 2018

...WIND CHILL WARNING HAS EXPIRED...

While wind chills have increased to above warning criteria, they 
will remain below zero through the day. Continue to exercise
caution and dress appropriately for the conditions. Limit outdoor
exposure as much as possible.

$$

INZ051>057-060>065-067>072-021915-
/O.EXP.KIND.WC.Y.0002.000000T0000Z-180102T1800Z/
Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-Greene-Monroe-
Brown-Bartholomew-Decatur-Knox-Daviess-Martin-Lawrence-Jackson-
Jennings-
Including the cities of Terre Haute, Shelbyville, Bloomington, 
Columbus, Vincennes, Bedford, and Seymour
105 PM EST Tue Jan 2 2018

...WIND CHILL ADVISORY HAS EXPIRED...

While wind chills have increased to above advisory criteria in 
most locations, they will remain below zero through the day. 
Continue to exercise caution and dress appropriately for the 
conditions. Limit outdoor exposure as much as possible.

$$

For more information from the National Weather Service visit
http://weather.gov/ind

What forecasters said that day

The local office's own words before this wind chill warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Indianapolis, IN wrote its last area forecast discussion before this wind chill warning went out at Jan 1, 3:01 AM EST, 37 minutes earlier.

Area forecast discussion, Jan 1, 3:01 AM EST, 37 minutes before
Area Forecast Discussion
National Weather Service Indianapolis IN
301 AM EST Mon Jan 1 2018

.UPDATE...
Aviation section updated

&&

.SYNOPSIS...
Issued at 336 PM EST Sun Dec 31 2017

Bitterly cold air will encompass central Indiana and much of the
Midwest for much of the upcoming week as an exceptionally strong
high pressure expands across the eastern half of the country.
Dangerously cold conditions will develop over the next few days with
wind chills dropping well below zero. Dry weather is expected
through much of the upcoming week. Light snow is possible Wednesday
afternoon and evening as a weak upper wave passes through the area.
Additional disturbances aloft may produce periodic light snow
chances late week into next weekend as well.

&&

.NEAR TERM /Tonight/...
Issued at 908 PM EST Sun Dec 31 2017

Most of the earlier cloud cover has dissipated, except over the
northeast zones, where residual moisture off of Lake Michigan is
still producing some cloud cover. Will make some adjustments to sky
condition for the rest of the night based on above.

Will also lower the lows tonight a few more degrees, mainly over the
northwest zones, where snow cover is deepest.

Will keep headlines as is. Some of the northwest zones may flirt
with warning criteria for a brief period around sunrise Monday.

Previous discussion follows.

Scattered stratocu continues to drift south across portions of the
area on an otherwise partly cloudy afternoon. 19Z temperatures
ranged from the single digits north to the teens south.

After the snowpack freshening for some this morning...all focus
shifts to the bitterly cold temperatures poised to end 2017 and
welcome 2018. The stratocu should diminish shortly after
sunset...possibly lingering in some spots into the evening before
skies fully clear as the broad expansive polar high pressure builds
into the region from the northwest. The wind chill advisory will
commence at 00Z tonight over the southern counties to join in with
the rest of the forecast area. The combination of clearing skies and
the freshened snowpack will again enable temperatures to tumble fast
after dark. Do not expect the boundary layer to fully decouple
tonight with winds likely hanging at 5-10mph over most of the area.
Wind chills are likely to drop into the -25 to -15F range over the
entire forecast area and we may flirt with warning criteria in the
northwest counties late. Confidence is not high enough to upgrade to
a warning at this time...but will certainly monitor trends through
the evening.

Temps...for the reasons mentioned above...have undercut all guidance
for lows overnight and in some cases by several degrees. Expect the
entire forecast area to go subzero tonight with -10 and lower on the
table in spots north of I-70. Likely the coldest start to a new year
since the mid 1970s. The record low for Indy of -12 is likely
safe...but we may give it a run.

&&

.SHORT TERM /Monday through Wednesday/...
Issued at 336 PM EST Sun Dec 31 2017

Forecast challenges focus primary on temperatures and wind chills as
central Indiana and the Midwest remain firmly under the grips of an
exceptionally cold airmass.

The upper level pattern over the contiguous U S will change little
through the short term as the upper trough remains anchored over the
eastern part of the country...aided by pieces of energy aloft
maintaining an amplified look. At the surface...high pressure with a
strength exceeding 1050mb will track from the northern Plains to the
Tennessee Valley through the period modifying as it does so. This
will keep a dry...bitterly cold...polar origin airmass locked in
over the region through most of the period.

The only exception to the dry weather will come Wednesday as model
guidance hinting at an upper wave with a frontal boundary at the
surface passing through the region. While forcing aloft is generally
weak...presence of any forcing along with a brief period where the
DGZ depth sets up at around 150mb argues for introducing a low pop
for snow in the afternoon. Suspect the recent trend of models
playing catchup in the 24-48 hours ahead of these systems continues
here and the potential for a light accumulating snow similar to the
one earlier this morning could be in the cards. Something to watch
in the coming few days.

Temps...the primary story through the short term will be the cold
which looks exceptionally impressive. 850mb temps below 20C through
Monday will modify slowly through the end of the period. Continued
recent trend of fully undercutting all guidance through the entire
period...especially at night. Monday night will likely be the
coldest night as lows falling to -15 to -10 are common north of I-
70. Temps will begin to recover somewhat Tuesday night and Wednesday
as warm advection develops ahead of the aforementioned front before
dropping again for late week as a renewed surge of bitterly cold air
dives into the region. The potential to approach the coldest high on
record on New Year's Day for Indy remains on the table. The record
is 2 from 1928...and we are forecasting that as a high.

The Wind Chill Advisory will remain in effect through Tuesday over
the entire area and will likely need to be eventually extended
through Tuesday night. Confidence is growing in the potential need
for an upgrade to a Wind Chill Warning in northwest counties Monday
through Tuesday. After collaboration with neighboring NWS
offices...have elected to hold off on an upgrade at this time. That
may be considered with the forecast package overnight or on
Monday.

&&

.LONG TERM /Wednesday Night through Sunday/...
Issued at 215 PM EST Sun Dec 31 2017

Continued cold can be expected for much of the long term period,
although not quite as severe as that expected over the short term.

There is some indication in the models that the large scale trough
over the eastern portion of the country will finally eject
eastward and allow upper level flow to become more zonal late in
the period, which would allow temperatures to moderate somewhat.
Unfortunately, this may be temporary and come with a low pressure
system producing precipitation, perhaps in the form of light snow,
followed by another Arctic high beyond the end of the long term.

Made minor downward adjustments to blends at times, but overall
the initialization performed decently.

Some question as to potential for a few light snow showers early
in the long term as sharply cyclonic flow in place across the area
and a few waves skirt the region moving through the overall flow
Wednesday night into Thursday. Will keep out for now and monitor,
as there is some indication that between these waves and a long
lake enhanced fetch, some snow showers may get into the area
during that time frame.

&&

.AVIATION /Discussion for the 010800Z IND Taf update/...

VFR Conditions continue. No significant changes to the ongoing
TAF. GOES16 continues to show clear skies across Central Indiana
and surface analysis shows strong arctic high pressure over
Missouri and Nebraska building across the region. Cold NW surface
flow continues.

Previous Discussion Below

/Discussion for the 010600Z TAFS/...
Issued at 1138 PM EST Sun Dec 31 2017

Satellite indicates some residual cloud patches based around 050
over the area that had originated over Lake Michigan. These cloud
patches will probably linger into the early morning hours before
dissipating.

Otherwise, unrestricted visibility expected at the terminals
through midday Monday. Surface winds 290-320 degrees at 5-8 kts
overnight will increase to 10-13 kts by midday Monday.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Wind Chill Advisory until 7 PM EST Tuesday for INZ021-028>031-
035>049-051>057-060>065-067>072.

&&

SYNOPSIS...Ryan
NEAR TERM...Ryan/JAS
SHORT TERM...Ryan
LONG TERM...Nield
AVIATION...JAS/JP
Hazardous weather outlook, Dec 31, 3:55 PM EST, 11 hours 43 minutes before
Hazardous Weather Outlook
National Weather Service Indianapolis IN
355 PM EST Sun Dec 31 2017

INZ021-028>031-035>049-051>057-011000-
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-
Including the cities of Lafayette, Frankfort, Kokomo,
Crawfordsville, Anderson, Muncie, Indianapolis, Terre Haute,
and Shelbyville
355 PM EST Sun Dec 31 2017

This hazardous weather outlook is for central Indiana.

.DAY ONE...This Afternoon and Tonight.

Outlook: Bitterly cold conditions expected tonight.

Hazards: Lows will fall below zero overnight with wind chills of
-15 to -25. A Wind Chill Advisory is in effect.

Timing: Cold temperatures and wind chills through tonight.

Discussion: A bitterly cold air mass will remain across the area
region today and tonight as high pressure builds in to welcome in
2018.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Outlook: Bitterly cold air is expected across Central Indiana this
week. Dangerously cold wind chills of -25 to -15 degrees...possibly
lower at times...are expected through Tuesday. Cold air will linger
across the region all week. A chance for light snow will next come
Wednesday afternoon as a weak upper level wave tracks through the
area.

Discussion: Cold Arctic high pressure will extend from the northern
Plains into the Ohio Valley this week allowing an arctic air mass to
remain across the region much of the week with below normal
temperatures.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

INZ060>065-067>072-011000-
Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-Martin-
Lawrence-Jackson-Jennings-
Including the cities of Bloomington, Columbus, Vincennes, Bedford,
and Seymour
355 PM EST Sun Dec 31 2017

This hazardous weather outlook is for central Indiana.

.DAY ONE...This Afternoon and Tonight.

Outlook: Bitterly cold conditions expected tonight.

Hazards: Lows will fall below zero overnight with wind chills of
-10 to -20. A Wind Chill Advisory will go into effect at 7 pm tonight.

Timing: Cold temperatures and wind chills through tonight.

Discussion: A bitterly cold air mass will remain across the area
region today and tonight as high pressure builds in to welcome in
2018.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Outlook: Very cold air is expected across Central Indiana this week.
Dangerously cold wind chills of -25 to -15 degrees are expected
through Tuesday. Cold air will linger across the region all week.

Discussion: Cold Arctic high pressure will extend from the northern
Plains into the Ohio Valley this week allowing an arctic air mass to
remain across the region much of the week with below normal
temperatures.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

Ryan

Nearby

Wind Chill Warnings in Indiana, 2018Every wind chill warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.