Alert archive / Indiana / Winter Storm Warnings in 2019

Winter Storm Warning 3, NWS Indianapolis, IN

December 16, 201918 counties in Indiana

NWS Indianapolis, IN issued this winter storm warning at Dec 16, 2019, 3:55 AM EST for 18 counties in Indiana. It took effect at Dec 16, 2019, 2:00 PM EST. It was in force for 13 hr. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 16, 2019, 3:55 AM EST (08:55 UTC)
In effect from
Dec 16, 2019, 2:00 PM EST
Expired
Dec 17, 2019, 3:15 AM EST
In force
13 hr
Issued by
NWS Indianapolis, IN

Counties Boone County, IN, Clay County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Johnson County, IN, Madison County, IN, Marion County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 15 km from the middle of the area, began a volume at 08:53 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.

What was reported inside it

TimeReportWhereRemark
Dec 16, 5:30 PM ESTSNOW 41 Sse Rockville, INCO-OP OBSERVER STATION ROKI3 ROCKVILLE.
Dec 17, 12:00 AM ESTSNOW 32 S Castleton, IN6 INCH SNOW DEPTH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.9 hours before the alert went out and 191 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 2019-12-16Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2019-12-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.1939587897117136156Sfc1 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
828 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
306 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

793 
WWUS43 KIND 160855
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
355 AM EST Mon Dec 16 2019

INZ037-039-040-043>049-051>057-060-161700-
/O.NEW.KIND.WS.W.0003.191216T1900Z-191217T1200Z/
/O.EXT.KIND.WW.Y.0010.000000T0000Z-191216T1900Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
355 AM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 2 PM EST THIS
AFTERNOON...
...WINTER STORM WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO
7 AM EST TUESDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to
  heavy snow this afternoon into tonight. Some light mixed
  precipitation possible. Additional snowfall accumulations of 3
  to 4 inches, with locally higher amounts possible, expected this
  afternoon and tonight. This, combined with the snow that fell
  Sunday night, will bring storm totals in the 5 to 9 inch range.
  Light ice accumulations area also possible. For the Winter
  Weather Advisory, mixed precipitation is expected. Additional 
  snow accumulations of 1 to 3 inches and ice accumulations of a 
  light glaze.

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

* WHEN...For the Winter Storm Warning, from 2 PM this afternoon 
  to 7 AM EST Tuesday. For the Winter Weather Advisory, until 2 
  PM EST this afternoon.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Slow down and use caution while traveling. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

INZ021-028>031-035-036-038-041-042-061>065-067>072-161700-
/O.CON.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Tipton-Delaware-Randolph-Greene-Monroe-Brown-Bartholomew-Decatur-
Knox-Daviess-Martin-Lawrence-Jackson-Jennings-
Including the cities of Delphi, Flora, Williamsport, 
West Lebanon, Lafayette, West Lafayette, Frankfort, Kokomo, 
Attica, Covington, Veedersburg, Crawfordsville, Tipton, Muncie, 
Winchester, Linton, Bloomfield, Bloomington, Nashville, Columbus,
Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, 
Mitchell, Seymour, Brownstown, and North Vernon
355 AM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Mixed precipitation increasing in intensity by this
  afternoon, transitioning back to snow tonight. Additional
  snowfall accumulations of 1 to 3 inches, with locally higher
  amounts possible, expected this afternoon and tonight. Light ice
  accumulations area also possible.
 
* WHERE...Portions of central, east central, south central, 
  southwest and west central Indiana.

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery and snow covered road conditions. 
  The hazardous conditions will likely impact the Monday morning 
  and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

For more information from the National Weather Service visit
http://weather.gov/ind
5 follow-up statements
354 
WWUS43 KIND 161408
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
908 AM EST Mon Dec 16 2019

INZ037-039-040-043>049-051>057-060-162215-
/O.CON.KIND.WS.W.0003.191216T1900Z-191217T1200Z/
/O.CON.KIND.WW.Y.0010.000000T0000Z-191216T1900Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
908 AM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 7 AM EST TUESDAY...

* WHAT...For the Winter Storm Warning, periods of moderate to 
  heavy snow this afternoon into tonight. Some light mixed 
  precipitation possible. Additional snowfall accumulations of 3 
  to 4 inches, with locally higher amounts possible, expected 
  this afternoon and tonight. This, combined with the snow that 
  fell Sunday night, will bring storm totals in the 5 to 9 inch 
  range. Light ice accumulations area also possible. For the 
  Winter Weather Advisory, mixed precipitation is expected. 
  Additional snow accumulations of 1 to 3 inches and ice 
  accumulations of a light glaze.

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

* WHEN...For the Winter Storm Warning, from 2 PM this afternoon 
  to 7 AM EST Tuesday. For the Winter Weather Advisory, until 2 
  PM EST this afternoon.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

Slow down and use caution while traveling.

The latest road conditions for Indiana can be obtained by calling
1 800 2 6 1 7 6 2 3

&&

$$

INZ021-028>031-035-036-038-041-042-061>065-067>072-162215-
/O.CON.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Tipton-Delaware-Randolph-Greene-Monroe-Brown-Bartholomew-Decatur-
Knox-Daviess-Martin-Lawrence-Jackson-Jennings-
Including the cities of Delphi, Flora, Williamsport, 
West Lebanon, Lafayette, West Lafayette, Frankfort, Kokomo, 
Attica, Covington, Veedersburg, Crawfordsville, Tipton, Muncie, 
Winchester, Linton, Bloomfield, Bloomington, Nashville, Columbus,
Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, 
Mitchell, Seymour, Brownstown, and North Vernon
908 AM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Mixed precipitation increasing in intensity by this 
  afternoon, transitioning back to snow tonight. Additional 
  snowfall accumulations of 1 to 3 inches, with locally higher 
  amounts possible, expected this afternoon and tonight. Light 
  ice accumulations area also possible.

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

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery and snow covered road conditions. 
  The hazardous conditions will likely impact the Monday morning 
  and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for Indiana can be obtained by calling
1 800 2 6 1 7 6 2 3

&&

$$

For more information from the National Weather Service visit
http://weather.gov/ind
609 
WWUS43 KIND 161907
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
207 PM EST Mon Dec 16 2019

INZ037-039-040-043>049-051>057-060-170315-
/O.EXP.KIND.WW.Y.0010.000000T0000Z-191216T1900Z/
/O.CON.KIND.WS.W.0003.000000T0000Z-191217T1200Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
207 PM EST Mon Dec 16 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...
...WINTER WEATHER ADVISORY HAS EXPIRED...

* WHAT...Snow and mixed precipitation. Locally heavy snow possible
  at times. Additional snowfall accumulations of 3 to 4 inches,
  expected this afternoon into tonight. This, combined with the
  snow that fell Sunday night, will bring storm totals in the 5 to
  9 inch range. Some light icing is possible.

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

* WHEN...This afternoon to 7 AM EST Tuesday. 

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions will impact the evening commute and may impact
  Tuesday morning's commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

INZ021-028>031-035-036-038-041-042-061>065-067>072-170315-
/O.CON.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-
Tipton-Delaware-Randolph-Greene-Monroe-Brown-Bartholomew-Decatur-
Knox-Daviess-Martin-Lawrence-Jackson-Jennings-
Including the cities of Delphi, Flora, Williamsport, 
West Lebanon, Lafayette, West Lafayette, Frankfort, Kokomo, 
Attica, Covington, Veedersburg, Crawfordsville, Tipton, Muncie, 
Winchester, Linton, Bloomfield, Bloomington, Nashville, Columbus,
Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, 
Mitchell, Seymour, Brownstown, and North Vernon
207 PM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Mixed precipitation increasing in intensity this 
  afternoon, transitioning back to snow tonight. Additional 
  snowfall accumulations of 1 to 3 inches, with locally higher 
  amounts possible, expected this afternoon and tonight. Light ice
  accumulations area also possible.

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

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery and snow covered road conditions. 
  The hazardous conditions will likely impact the Monday morning 
  and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for Indiana can be obtained by calling
1 800 2 6 1 7 6 2 3

&&

$$

For more information from the National Weather Service visit
http://weather.gov/ind
848 
WWUS43 KIND 162102
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
402 PM EST Mon Dec 16 2019

INZ021-028-029-162215-
/O.CAN.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Carroll-Warren-Tippecanoe-
Including the cities of Delphi, Flora, Williamsport, 
West Lebanon, Lafayette, and West Lafayette
402 PM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY IS CANCELLED...

While some light snow is still possible this evening and
overnight, amounts will generally be an inch or less. Motorists
should still keep an eye out for slick spots on roadways.

$$

INZ037-039-040-043>049-051>057-060-170515-
/O.CON.KIND.WS.W.0003.000000T0000Z-191217T1200Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
402 PM EST Mon Dec 16 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Snow and mixed precipitation. Locally heavy snow 
  possible at times. Additional snowfall accumulations of 3 to 4 
  inches, expected this afternoon into tonight. This, combined 
  with the snow that fell Sunday night, will bring storm totals 
  in the 5 to 9 inch range. Some light icing is possible.

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

* WHEN...This afternoon to 7 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions will impact the evening commute and may impact 
  Tuesday morning's commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for Indiana can be obtained by calling
1 800 2 6 1 7 6 2 3

&&

$$

INZ030-031-035-036-038-041-042-061>065-067>072-170515-
/O.CON.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Clinton-Howard-Fountain-Montgomery-Tipton-Delaware-Randolph-
Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-Martin-
Lawrence-Jackson-Jennings-
Including the cities of Frankfort, Kokomo, Attica, Covington, 
Veedersburg, Crawfordsville, Tipton, Muncie, Winchester, Linton, 
Bloomfield, Bloomington, Nashville, Columbus, Greensburg, 
Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, 
Seymour, Brownstown, and North Vernon
402 PM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Mixed precipitation increasing in intensity this
  afternoon, transitioning back to snow tonight. Additional
  snowfall accumulations of up to 3 inches, with amounts over far
  southern Indiana generally an inch or less, with some light ice
  accumulations possible.

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

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery and snow covered road conditions. 
  The hazardous conditions will likely impact the Monday morning 
  and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for Indiana can be obtained by calling
1 800 2 6 1 7 6 2 3

&&

$$

For more information from the National Weather Service visit
http://weather.gov/ind
341 
WWUS43 KIND 170255
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
955 PM EST Mon Dec 16 2019

INZ037-039-040-043>049-051>057-060-171100-
/O.CON.KIND.WS.W.0003.000000T0000Z-191217T1200Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
955 PM EST Mon Dec 16 2019

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Moderate snow, heavy at times, with a small chance for
  mixed precipitation south of Indianapolis. Additional snow 
  accumulations of up to two inches and ice accumulations of a 
  light glaze.

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

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. With overnight
  temperatures dropping into the middle 20s and freezing snow and
  slush on untreated roads, the hazardous conditions will impact 
  the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

INZ030-031-035-036-038-041-042-061>065-067>072-171100-
/O.CON.KIND.WW.Y.0010.000000T0000Z-191217T1200Z/
Clinton-Howard-Fountain-Montgomery-Tipton-Delaware-Randolph-
Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-Martin-
Lawrence-Jackson-Jennings-
Including the cities of Frankfort, Kokomo, Attica, Covington, 
Veedersburg, Crawfordsville, Tipton, Muncie, Winchester, Linton, 
Bloomfield, Bloomington, Nashville, Columbus, Greensburg, 
Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, 
Seymour, Brownstown, and North Vernon
955 PM EST Mon Dec 16 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of up
  to two inches, with ice accumulations of a light glaze possible
  south of Indianapolis.

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

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. With overnight
  temperatures dropping into the middle 20s and freezing snow and
  slush on untreated roads, the hazardous conditions will impact 
  the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

For more information from the National Weather Service visit
http://weather.gov/ind
895 
WWUS43 KIND 170815
WSWIND

URGENT - WINTER WEATHER MESSAGE
National Weather Service Indianapolis IN
315 AM EST Tue Dec 17 2019

INZ037-039-040-043>049-051>057-060-171400-
/O.CAN.KIND.WS.W.0003.000000T0000Z-191217T1200Z/
/O.EXB.KIND.WW.Y.0010.000000T0000Z-191217T1400Z/
Boone-Hamilton-Madison-Vermillion-Parke-Putnam-Hendricks-Marion-
Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Rush-Sullivan-
Including the cities of Lebanon, Zionsville, Fishers, Carmel, 
Noblesville, Anderson, Clinton, Newport, Rockville, Greencastle, 
Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, 
Cumberland, New Castle, Terre Haute, Brazil, Clay City, Spencer, 
Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, 
Rushville, and Sullivan
315 AM EST Tue Dec 17 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM EST THIS
MORNING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Light snow. Freezing rain and drizzle may briefly mix in
  through 5 AM. Additional snow accumulations of up to one inch 
  and ice accumulations of a light glaze.

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

* WHEN...Until 9 AM EST this morning.

* IMPACTS...Plan on slippery road conditions. With early morning
  temperatures dropping into the middle 20s and freezing snow 
  and slush on untreated roads, the hazardous conditions will 
  impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

INZ030-031-035-036-038-041-042-061>065-067>072-171400-
/O.EXT.KIND.WW.Y.0010.000000T0000Z-191217T1400Z/
Clinton-Howard-Fountain-Montgomery-Tipton-Delaware-Randolph-
Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-Martin-
Lawrence-Jackson-Jennings-
Including the cities of Frankfort, Kokomo, Attica, Covington, 
Veedersburg, Crawfordsville, Tipton, Muncie, Winchester, Linton, 
Bloomfield, Bloomington, Nashville, Columbus, Greensburg, 
Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, 
Seymour, Brownstown, and North Vernon
315 AM EST Tue Dec 17 2019

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM EST THIS
MORNING...

* WHAT...Light snow mixed with freezing rain and drizzle. 
  Additional snow accumulations of up to one inch and ice 
  accumulations of a light glaze.

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

* WHEN...Until 9 AM EST this morning.

* IMPACTS...Plan on slippery road conditions. With early morning
  temperatures dropping into the middle 20s and freezing snow 
  and slush on untreated roads, the hazardous conditions will 
  impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for Indiana can be obtained by
calling 1 800 2 6 1 7 6 2 3

&&

$$

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

Ryan

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Dec 16, 3:06 AM EST, 49 minutes earlier.

Area forecast discussion, Dec 16, 3:06 AM EST, 49 minutes before
Area Forecast Discussion
National Weather Service Indianapolis IN
306 AM EST Mon Dec 16 2019

.UPDATE...
The SYNOPSIS...NEAR TERM and SHORT TERM Sections have been updated
below.

&&

.SYNOPSIS...
Issued at 301 AM EST Mon Dec 16 2019

A low pressure system is expected to move through the Ohio Valley
through tonight. In the wake of this system, high pressure is
expected to build in for the rest of the week.

&&

.NEAR TERM /Today and Tonight/...
Issued at 301 AM EST Mon Dec 16 2019

Radar loop and short term model data indicate the steadier snow
should continue to diminish across the area over the next few
hours. Should be a break in the more significant precipitation for
a period this morning, however surface observations indicates
there may be areas of drizzle or freezing drizzle around for much
of the morning hours.

Organized lift from the next wave currently over the southern Plains
is progged by the short term models to begin moving into the
southwest zones by early this afternoon, aided by a 40-50 kt low
level jet nosing into southern Kentucky. Will go with chance PoPs
for mixed precipitation this morning, and go with high PoPs during
the afternoon hours. Forecast soundings suggest the elevated warm
layer will reach into the southern zones later today, but
probably not much farther than that. As a result, will lean
towards more of a rain or mixed precipitation over about the
southern third of the area, with mostly snow farther north.

Will keep PoPs rather high well into the night tonight, as models
suggest a deformation zone may set up over the area for a period
later tonight. Given developing cold advection and lowering
thicknesses, mixed precipitation should tend to change over to
snow over the southern zones during the night.

Appears there is potential for an additional 2-4 inches of snow later
this afternoon and tonight over parts of the area. Reports
indicate that some of the central zones have already received
around 4 inches from the previous wave. May upgrade the advisory
to a warning for a period this afternoon and tonight over some of
the central zones, given what has already fallen, expected
additional accumulations, and the fact that heavier snow will
impact the evening commute. Otherwise, due to the areas of
freezing drizzle expected to linger this morning, will keep the
advisory as is.

Due to thick cloud cover and expected precipitation, will shave a
couple of degrees off of the GFs MOS highs today. The guidance lows
tonight look OK.

&&

.SHORT TERM /Tuesday through Wednesday Night/...
Issued at 301 AM EST Mon Dec 16 2019

Generally dry conditions expected during this period, as surface
highs pressure slides through the local area. May leave a lingering
PoP for light snow over the eastern zones Tuesday morning to cover
any activity that may in the process of exiting the local area.

Progged low level thicknesses suggest the GFS MOS highs for Tuesday
may be too cool. Will cut about a category off of the guidance highs
in that period. The remainder of the periods look OK for now.

&&

.LONG TERM /Thursday through Sunday/...
Issued at 301 AM EST Mon Dec 16 2019

High pressure will remain the predominant weather feature through
much of the extended period with dry conditions and quiet weather
anticipated. A few disturbances aloft will track across the Great
Lakes Friday into Saturday but in the absence of stronger forcing
aloft and deeper moisture...expect just an increase in clouds
over the area as these system pass by to the north.

After the midweek chill...temperatures will recover to near to
even slightly above normal levels into the weekend. Highs in the
lower and mid 30s Thursday will rise into the lower and mid 40s
by the weekend.

&&

.AVIATION /Discussion for 160900Z TAF Update/...
Issued at 301 AM EST Mon Dec 16 2019

Minor adjustments are in order based on current obs but overall
TAFs have the situation well in hand. While snow has largely
ended...IFR conditions and lower linger and will likely continue
to do so for the next few hours.

06Z discussion follows.

Snow bands are moving off to the northeast. Should still see snow
at KLAF and KIND for another hour (KIND) or two (KLAF) before snow
transitions to a wintry mix of snow, sleet and freezing drizzle at
KIND and then just freezing drizzle, and ends altogether at KLAF.
KHUF and KBMG should continue to see off and on freezing drizzle
for a couple of hours before enough dry air arrives to bring
precip to an end. Ceilings should remain IFR or lower through the
overnight for the most part, but cannot rule out a brief period
where the dry air mixes out the lower ceilings before they build
back in at IFR or lower through all of Monday. Snow should move
back in Monday afternoon. Winds will generally be northeasterly
around 7 to 10 kts through the period.

&&

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

&&

SYNOPSIS...JAS
NEAR TERM...JAS
SHORT TERM...JAS
LONG TERM....Ryan
AVIATION...CP/Ryan
Hazardous weather outlook, Dec 15, 4:38 PM EST, 11 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Indianapolis IN
438 PM EST Sun Dec 15 2019

INZ021-028>031-035>049-051>057-060>065-067>072-162145-
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-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Delphi, Flora, Williamsport, West Lebanon,
Lafayette, West Lafayette, Frankfort, Kokomo, Attica, Covington,
Veedersburg, Crawfordsville, Lebanon, Zionsville, Tipton, Fishers,
Carmel, Noblesville, Anderson, Muncie, Winchester, Clinton, Newport,
Rockville, Greencastle, Plainfield, Brownsburg, Danville,
Indianapolis, Greenfield, Cumberland, New Castle, Terre Haute,
Brazil, Clay City, Spencer, Martinsville, Mooresville, Greenwood,
Franklin, Shelbyville, Rushville, Sullivan, Linton, Bloomfield,
Bloomington, Nashville, Columbus, Greensburg, Vincennes, Washington,
Loogootee, Shoals, Bedford, Mitchell, Seymour, Brownstown,
and North Vernon
438 PM EST Sun Dec 15 2019

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: Snow tonight. Snow will be locally heavy this evening into
the early overnight. Freezing drizzle will likely mix in with snow
along and south of Interstate 70 late tonight.

Hazards: Slick and snow covered roads. Reduced visibilities within
heavier snowfall. 2 to 5 inches of snow tonight over central Indiana
with light icing possible along and south of I-70. The heaviest
snowfall will likely be along the I-70 corridor.

Timing: Snow has begun across southern portions of central Indiana
and will overspread the area this evening. The heaviest snowfall is
expected this evening into the early part of the overnight. Any
freezing drizzle will mix in late tonight.

Discussion: A frontal boundary will set up late today over the lower
Ohio Valley and remain nearly stationary into Monday. An intense snow
band will move through central Indiana this evening. Freezing drizzle
will likely mix in with the snow at times tonight along and south of
Interstate 70 and especially across southern portions of central
Indiana.

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

Outlook: Additional light snowfall accumulations likely late Monday
through early Tuesday.

Discussion: After an extended period of little to no precipitation
Monday...a surface wave will track along the front Monday night
bringing another round of snow through much of central Indiana
through Tuesday morning. Additional light snow accumulations of 1 to
possibly as much as 2 inches are possible. Total amounts of 4-7
inches with isolated higher amounts are expected along and either
side of the I-70 corridor.

The Monday morning and evening commutes will be impacted by winter
weather conditions.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report snow and ice accumulations this
evening through Tuesday morning.

&&

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

In the hours before

Local storm report, Dec 15, 11:16 PM EST, 4 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1116 PM EST SUN DEC 15 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1108 PM     SNOW             4 NNW EAGLE CREEK RESER 39.90N 86.33W
12/15/2019  M4.2 INCH        HENDRICKS          IN   PUBLIC

1107 PM     SNOW             2 SW ZIONSVILLE         39.93N 86.30W
12/15/2019  M3.5 INCH        BOONE              IN   PUBLIC

&&
Local storm report, Dec 15, 11:35 PM EST, 4 hours 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1135 PM EST SUN DEC 15 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1124 PM     SNOW             1 NW GREENCASTLE        39.66N 86.85W
12/15/2019  M3.5 INCH        PUTNAM             IN   PUBLIC

&&
Local storm report, Dec 15, 11:47 PM EST, 4 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1147 PM EST SUN DEC 15 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1137 PM     SNOW             4 SE BEECH GROVE        39.69N 86.03W
12/15/2019  M4.6 INCH        MARION             IN   PUBLIC

&&
Local storm report, Dec 16, 1:47 AM EST, 2 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
147 AM EST MON DEC 16 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 AM     SNOW             1 SSE INDIANAPOLIS INT' 39.71N 86.29W
12/16/2019  M4.3 INCH        MARION             IN   OFFICIAL NWS OBS

1200 AM     SNOW             2 S CASTLETON           39.88N 86.05W
12/16/2019  M4.8 INCH        MARION             IN   CO-OP OBSERVER

            0.40 INCH LIQUID EQUIVALENT, 5 INCH SNOW
            DEPTH.

0146 AM     SNOW             2 W GOSPORT             39.35N 86.70W
12/16/2019  M3.3 INCH        OWEN               IN   PUBLIC

&&
Local storm report, Dec 16, 1:48 AM EST, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
148 AM EST MON DEC 16 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1225 AM     SNOW             WESTFIELD               40.05N 86.13W
12/16/2019  M3.5 INCH        HAMILTON           IN   TRAINED SPOTTER

0100 AM     SNOW             3 NE FISHERS            39.98N 85.98W
12/16/2019  M4.1 INCH        HAMILTON           IN   TRAINED SPOTTER

&&
Local storm report, Dec 16, 3:02 AM EST, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
302 AM EST MON DEC 16 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 AM     SNOW             2 N COUNTRY CLUB HEIGHT 40.15N 85.69W
12/16/2019  M3.7 INCH        MADISON            IN   PUBLIC

&&

Nearby

Winter Storm Warnings in Indiana, 2019Every winter storm warning in 2019

Sources

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