Alert archive / Indiana / Winter Storm Warnings in 2017

Winter Storm Warning 2, NWS Northern Indiana

December 11, 2017Elkhart County, LaGrange County, Noble County, Indiana; Cass County, Saint Joseph County, Michigan

NWS Northern Indiana issued this winter storm warning at Dec 11, 2017, 12:53 PM EST for Elkhart County, LaGrange County, Noble County, Indiana; Cass County, Saint Joseph County, Michigan. It took effect at Dec 12, 2017, 1:00 AM EST. It was in force for 21 hr. 7 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 11, 2017, 12:53 PM EST (17:53 UTC)
In effect from
Dec 12, 2017, 1:00 AM EST
Expired
Dec 12, 2017, 10:09 PM EST
In force
21 hr
Issued by
NWS Northern Indiana

Counties Elkhart County, IN, LaGrange County, IN, Noble County, IN, Cass County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 38 km from the middle of the area, began a volume at 17:59 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 12, 9:39 AM ESTSNOW 5Cassopolis, MISTORM TOTAL.
Dec 12, 12:57 PM ESTSNOW 5Bear Lake, INSTORM TOTAL.
Dec 12, 4:20 PM ESTSNOW 2Goshen, INSTORM TOTAL.
Dec 12, 7:40 PM ESTSNOW 5Constantine, MI
Dec 12, 7:40 PM ESTSNOW 64 N Middlebury, IN
Dec 12, 7:40 PM ESTSNOW 9.54 Se Magician Lake, MI
Dec 12, 7:44 PM ESTSNOW 6White Pigeon, MI

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

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 5.9 hours before the alert went out and 215 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, Detroit, MI at 12:00Z on 2017-12-11Temperature 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, Detroit, MI at 12:00Z on 2017-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.1939587897117Sfc1 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
709 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

571 
WWUS43 KIWX 111753
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
1253 PM EST Mon Dec 11 2017

INZ004-005-MIZ077-078-120200-
/O.UPG.KIWX.WS.A.0002.171212T0600Z-171213T1200Z/
/O.NEW.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
1253 PM EST Mon Dec 11 2017

...WINTER STORM WARNING IN EFFECT FROM 1 AM TUESDAY TO 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow possible. Plan on difficult travel
  conditions, including during the morning and evening commute on
  Tuesday. Total snow accumulations of 5 to 9 inches, with
  localized amounts up to 12 inches, are possible. Blowing and
  drifting snow also possible with strong and gusty northwest
  winds.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting between 30 and 40 mph will
  cause areas of blowing and drifting snow making travel
  difficult, especially on east west roads. Snowfall rates of 1 to
  3 inches per hour will be possible within the stronger lake
  effect bands. Whiteout conditions will likely occur in these
  bands.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-120200-
/O.UPG.KIWX.WS.A.0002.171212T0600Z-171213T1200Z/
/O.NEW.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
1253 PM EST Mon Dec 11 2017

...WINTER STORM WARNING IN EFFECT FROM 1 AM TUESDAY TO 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow possible. Plan on difficult travel
  conditions, including during the morning and evening commute on
  Tuesday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are possible. Blowing and 
  drifting snow also possible with strong and gusty northwest 
  winds.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting between 30 and 40 mph will
  cause areas of blowing and drifting snow making travel
  difficult, especially on east west roads. Snowfall rates of 1 to
  3 inches per hour will be possible within the stronger lake
  effect bands. Whiteout conditions will likely occur in these
  bands.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ014-016-120200-
/O.UPG.KIWX.WS.A.0002.171212T0600Z-171213T1200Z/
/O.NEW.KIWX.WW.Y.0002.171212T0600Z-171213T1200Z/
Marshall-Kosciusko-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, and Mentone
1253 PM EST Mon Dec 11 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TUESDAY TO 7 AM
EST WEDNESDAY...

* WHAT...Lake effect snow expected. Plan on slippery road
  conditions, including during the evening commute on Tuesday. In
  addition, some reductions to visibility are expected. Total snow
  accumulations will vary greatly from north to south, with 3 to 5
  inches on average and localized amounts up to 8 inches,
  especially north of Route 30. 

* WHERE...Marshall and Kosciusko Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting between 30 and 40 mph will
  cause areas of blowing and drifting snow making travel
  difficult, especially on east west roads. Snowfall rates of 1 to
  2 inches per hour will be possible within the stronger lake
  effect bands. Whiteout conditions will likely occur in these
  bands.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$

INZ017-018-120200-
/O.NEW.KIWX.WW.Y.0002.171212T0600Z-171213T1200Z/
Whitley-Allen IN-
Including the cities of Columbia City, Tri-Lakes, South Whitley, 
Fort Wayne, and New Haven
1253 PM EST Mon Dec 11 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TUESDAY TO 7 AM
EST WEDNESDAY...

* WHAT...Lake effect snow expected. Plan on slippery road
  conditions, including during the evening commute on Tuesday. In
  addition, some reductions to visibility are expected. Total snow
  accumulations will vary greatly from north to south, with 3 to 5
  inches on average and localized amounts up to 8 inches,
  especially north of Route 30. 

* WHERE...Whitley and Allen IN Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting between 30 and 40 mph will
  cause areas of blowing and drifting snow making travel
  difficult, especially on east west roads. Snowfall rates of 1 to
  2 inches per hour will be possible within the stronger lake
  effect bands. Whiteout conditions will likely occur in these
  bands.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$
7 follow-up statements
114 
WWUS43 KIWX 120237
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
937 PM EST Mon Dec 11 2017

INZ004-005-MIZ077-078-121100-
/O.CON.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
937 PM EST Mon Dec 11 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions, including during the evening commute on 
  Tuesday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are expected.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-121100-
/O.CON.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
937 PM EST Mon Dec 11 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions, including during the evening commute on 
  Tuesday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are expected.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ014-016>018-121100-
/O.CON.KIWX.WW.Y.0002.171212T0600Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
937 PM EST Mon Dec 11 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Lake effect snow expected. Plan on slippery road 
  conditions, including during the evening commute on Tuesday. 
  In addition, some reductions to visibility are expected. Total 
  snow accumulations of 2 to 5 inches, with localized amounts up 
  to 8 inches, are expected.

* WHERE...Marshall, Kosciusko, Whitley and Allen IN Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$
955 
WWUS43 KIWX 120329 CCA 
WSWIWX

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Northern Indiana
1029 PM EST Mon Dec 11 2017

INZ004-005-MIZ077-078-121100-
/O.COR.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
1029 PM EST Mon Dec 11 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Plan on difficult travel
  conditions, including during the morning and evening commute on
  Tuesday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are expected.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-121100-
/O.COR.KIWX.WS.W.0002.171212T0600Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
1029 PM EST Mon Dec 11 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Plan on difficult travel
  conditions, including during the morning and evening commute on
  Tuesday. Total snow accumulations of 5 to 9 inches, with 
  localized amounts up to 12 inches, are expected.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ014-016>018-121100-
/O.CON.KIWX.WW.Y.0002.171212T0600Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
1029 PM EST Mon Dec 11 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TUESDAY TO
7 AM EST WEDNESDAY...

* WHAT...Lake effect snow expected. Plan on slippery road 
  conditions, including during the evening commute on Tuesday. 
  In addition, some reductions to visibility are expected. Total 
  snow accumulations of 2 to 5 inches, with localized amounts up 
  to 8 inches, are expected.

* WHERE...Marshall, Kosciusko, Whitley and Allen IN Counties.

* WHEN...From 1 AM Tuesday to 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will lead
  to considerable blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$
959 
WWUS43 KIWX 120946
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
446 AM EST Tue Dec 12 2017

INZ004-005-MIZ077-078-121800-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
446 AM EST Tue Dec 12 2017

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

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions, including during the morning commute. Snow
  accumulations of 4 to 9 inches, with localized amounts up to 11
  inches, are expected.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-121800-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
446 AM EST Tue Dec 12 2017

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

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions, including during the morning commute. Snow 
  accumulations of 4 to 8 inches, with localized amounts up to 10 
  inches, are expected.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ003-121800-
/O.EXB.KIWX.WW.Y.0002.000000T0000Z-171213T0000Z/
La Porte-
Including the cities of Michigan City and La Porte
346 AM CST Tue Dec 12 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on difficult travel
  conditions, including during the morning commute. In addition,
  reductions to visibility are expected. Snow accumulations of 1
  to 3 inches, with localized amounts up to 5 inches, are 
  expected.

* WHERE...La Porte County.

* WHEN...Until 6 PM CST this evening.

* ADDITIONAL DETAILS...Winds gusting to 35 to 40 mph will cause
  areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$

INZ014-016>018-121800-
/O.CON.KIWX.WW.Y.0002.000000T0000Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
446 AM EST Tue Dec 12 2017

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

* WHAT...Lake effect snow occurring. Plan on slippery road
  conditions, including during the morning commute. In addition,
  some reductions to visibility are expected. Snow accumulations
  of 2 to 4 inches, with localized amounts up to 5 inches, are 
  expected.

* WHERE...Marshall, Kosciusko, Whitley and Allen IN Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$

MCD
027 
WWUS43 KIWX 121500
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
1000 AM EST Tue Dec 12 2017

INZ004-005-MIZ077-078-122300-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
1000 AM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate to locally heavy lake effect snow 
  occurring. Plan on difficult travel conditions, including the 
  evening commute. Additional snow accumulations will vary greatly
  ranging from a trace of snow to as much as 5 inches, depending 
  on location and duration of snow bands. 

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause
  areas of blowing and drifting snow as well as brief whiteout 
  conditions, especially in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-122300-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
1000 AM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate to locally heavy lake effect snow
  occurring. Plan on difficult travel conditions, including the
  evening commute. Additional snow accumulations will vary greatly
  ranging from a trace of snow to as much as 6 inches, depending 
  on location and duration of snow bands. .

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause
  areas of blowing and drifting snow as well as brief whiteout 
  conditions, especially in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ014-016>018-122300-
/O.CON.KIWX.WW.Y.0002.000000T0000Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
1000 AM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate lake effect snow occurring. Plan on
  difficult travel conditions, including the evening commute.
  Additional snow accumulations will vary greatly ranging from a
  trace of snow to as much as 3 inches, depending on location and
  duration of snow bands.

* WHERE...Marshall, Kosciusko, Whitley and Allen IN Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause
  patchy blowing and drifting snow, as well as brief whiteout
  conditions, especially in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$

INZ003-122300-
/O.CON.KIWX.WW.Y.0002.000000T0000Z-171213T0000Z/
La Porte-
Including the cities of Michigan City and La Porte
900 AM CST Tue Dec 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Bands of moderate lake effect snow occurring. Plan on
  difficult travel conditions, including the evening commute.
  Additional snow accumulations will vary greatly ranging from a
  trace of snow to as much as 3 inches, depending on location and
  duration of snow bands. 

* WHERE...La Porte County.

* WHEN...Until 6 PM CST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will cause
  patchy blowing and drifting snow as well as brief whiteout 
  conditions, especially in rural areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$
031 
WWUS43 KIWX 122042
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
342 PM EST Tue Dec 12 2017

INZ004-005-MIZ077-078-130400-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
342 PM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate to locally heavy lake effect snow
  occurring. Plan on difficult travel conditions, including during
  the evening commute. Additional snow accumulations of one to
  three inches are expected.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-130400-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
342 PM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate to locally heavy lake effect snow 
  occurring. Plan on difficult travel conditions, including during
  the evening commute. Additional snow accumulations of 1 to 3 
  inches are expected.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ014-016>018-130400-
/O.CON.KIWX.WW.Y.0002.000000T0000Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
342 PM EST Tue Dec 12 2017

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

* WHAT...Bands of moderate to locally heavy lake effect snow
  occurring. Plan on slippery road conditions, including during
  the evening commute. In addition, some reductions to visibility
  are expected. Additional snow accumulations of one to two 
  inches are expected.

* WHERE...Marshall, Kosciusko, Whitley and Allen IN Counties.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$

INZ003-130000-
/O.CON.KIWX.WW.Y.0002.000000T0000Z-171213T0000Z/
La Porte-
Including the cities of Michigan City and La Porte
242 PM CST Tue Dec 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on slippery road 
  conditions, including during the evening commute. In addition, 
  some reductions to visibility are expected. Additional snow 
  accumulations of up to one inch are expected.

* WHERE...La Porte County.

* WHEN...Until 6 PM CST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for lake effect snow means lake effect
snow is forecast that will make travel difficult in some areas.
Use caution when traveling. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

$$
957 
WWUS43 KIWX 130056
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
756 PM EST Tue Dec 12 2017

INZ014-016>018-130200-
/O.CAN.KIWX.WW.Y.0002.000000T0000Z-171213T1200Z/
Marshall-Kosciusko-Whitley-Allen IN-
Including the cities of Plymouth, Bremen, Culver, Warsaw, 
Winona Lake, Syracuse, Mentone, Columbia City, Tri-Lakes, 
South Whitley, Fort Wayne, and New Haven
756 PM EST Tue Dec 12 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

$$

INZ004-005-MIZ077-078-130900-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
St. Joseph IN-Elkhart-Berrien-Cass MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, Paw Paw Lake, 
Dowagiac, Cassopolis, and Marcellus
756 PM EST Tue Dec 12 2017

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

* WHAT...Heavy lake effect snow occurring, including during the
  morning commute on Wednesday. Additional accumulations up to one
  inch are expected.

* WHERE...In Indiana, St. Joseph IN and Elkhart Counties. In 
  Michigan, Berrien and Cass MI Counties.

* WHEN...Until 7 AM EST Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

INZ006-008-MIZ079-130900-
/O.CON.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
Lagrange-Noble-St. Joseph MI-
Including the cities of Lagrange, Topeka, Shipshewana, 
Kendallville, Ligonier, Albion, Sturgis, Three Rivers, 
White Pigeon, and Mendon
756 PM EST Tue Dec 12 2017

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

* WHAT...Heavy lake effect snow occurring. Plan on difficult 
  travel conditions. Additional snow accumulations of up to one 
  inch are expected.

* WHERE...In Indiana, Lagrange and Noble Counties. In Michigan, 
  St. Joseph MI County.

* WHEN...Until 7 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 25 mph will 
  cause patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy lake effect snow means
significant amounts of lake effect snow are forecast that will
make travel very hazardous or impossible. If you must travel,
keep an extra flashlight, food, and water in your vehicle in case
of an emergency. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$
414 
WWUS43 KIWX 130309
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
1009 PM EST Tue Dec 12 2017

INZ004>006-008-MIZ077>079-130415-
/O.CAN.KIWX.WS.W.0002.000000T0000Z-171213T1200Z/
St. Joseph IN-Elkhart-Lagrange-Noble-Berrien-Cass MI-
St. Joseph MI-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Elkhart, Goshen, Nappanee, Lagrange, Topeka, 
Shipshewana, Kendallville, Ligonier, Albion, Niles, 
Benton Harbor, St. Joseph, Fair Plain, Benton Heights, Buchanan, 
Paw Paw Lake, Dowagiac, Cassopolis, Marcellus, Sturgis, 
Three Rivers, White Pigeon, and Mendon
1009 PM EST Tue Dec 12 2017

...WINTER STORM WARNING IS CANCELLED...

The threat for significant additional snow accumulation has ended.
Scattered flurries will end by 1 AM EST Wednesday.

$$

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 11, 3:41 AM ESTWinter Storm WatchIWXElkhart, LaGrange, Marshall, Noble9 hr
Dec 11, 3:58 AM ESTGale WarningIWX36 hr
Dec 11, 12:53 PM ESTWinter Weather AdvisoryIWXAllen, Marshall, Whitley31 hr
Dec 11, 3:44 PM ESTLakeshore Flood AdvisoryIWX24 hr

Nearby

Winter Storm Warnings in Indiana, 2017Winter Storm Warnings in Michigan, 2017Every winter storm warning in 2017

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.