Alert archive / Indiana / Winter Storm Warnings in 2017

Winter Storm Warning 5, NWS Northern Indiana

December 8, 2017Marshall County, Starke County, Indiana

NWS Northern Indiana issued this winter storm warning at Dec 8, 2017, 3:58 AM EST for Marshall County, Starke County, Indiana. It took effect at Dec 9, 2017, 1:00 AM EST. It was in force for 21 hr. 3 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 8, 2017, 3:58 AM EST (08:58 UTC)
In effect from
Dec 9, 2017, 1:00 AM EST
Expired
Dec 9, 2017, 9:53 PM EST
In force
21 hr
Issued by
NWS Northern Indiana

Counties Marshall County, IN, Starke County, IN

The radar

The Northern Indiana radar (KIWX), 63 km from the middle of the area, began a volume at 09:02 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 9, 12:15 PM ESTSNOW 21 Sw Plymouth, IN
Dec 9, 4:00 PM ESTSNOW 7.52 Wnw Culver, INSTORM TOTAL SO FAR.
Dec 9, 8:08 PM ESTSNOW 102 Wnw Culver, INFINAL STORM TOTAL. 3 WAS FROM THE AM CLIPPER SYSTEM; THE REST WAS LAKE EFFECT.

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, 9.0 hours before the alert went out and 222 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 2017-12-08Temperature 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 2017-12-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
1517 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

807 
WWUS43 KIWX 080858
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
358 AM EST Fri Dec 8 2017

INZ003-004-MIZ077-081700-
/O.UPG.KIWX.WS.A.0001.171209T0500Z-171210T0500Z/
/O.NEW.KIWX.WS.W.0001.171209T0600Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
358 AM EST Fri Dec 8 2017 /258 AM CST Fri Dec 8 2017/

...WINTER STORM WARNING IN EFFECT FROM 1 AM EST /MIDNIGHT CST/
SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 4 to 7 inches, 
  with localized amounts up to 9 inches, are expected.

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...From 1 AM EST /midnight CST/ Saturday to midnight EST 
  /11 PM CST/ Saturday night.

* 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.

$$

INZ012-014-081700-
/O.NEW.KIWX.WW.Y.0001.171209T1000Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
358 AM EST Fri Dec 8 2017 /258 AM CST Fri Dec 8 2017/

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM EST /4 AM CST/
SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Lake effect snow expected. Plan on slippery road
  conditions. In addition, some reductions to visibility are
  expected. Total snow accumulations of 3 to 5 inches are
  expected. Locally higher amounts are possible depending on the
  location of the heaviest lake effect snow band Saturday.
 
* WHERE...Starke and Marshall Counties.

* WHEN...From 5 AM EST /4 AM CST/ Saturday to midnight EST /11 
  PM CST/ Saturday night.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$
9 follow-up statements
772 
WWUS43 KIWX 081559
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
1059 AM EST Fri Dec 8 2017

INZ003-004-MIZ077-090000-
/O.CON.KIWX.WS.W.0001.171209T0600Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
1059 AM EST Fri Dec 8 2017 /959 AM CST Fri Dec 8 2017/

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM EST /MIDNIGHT
CST/ SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult travel
  conditions. Total snow accumulations of 4 to 7 inches, with
  localized amounts up to 9 inches, are expected. 

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...The snow develops later tonight and continues through
  Saturday evening. The heaviest snow is expected to fall later
  Saturday morning into Saturday afternoon.

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

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.

$$

INZ012-014-090000-
/O.EXT.KIWX.WW.Y.0001.171209T0900Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
1059 AM EST Fri Dec 8 2017 /959 AM CST Fri Dec 8 2017/

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 4 AM EST /3 AM CST/
SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Snow expected. Plan on slippery road conditions. In 
  addition, some reductions to visibility are expected. Total 
  snow accumulations of 3 to 5 inches are expected.

* WHERE...Starke and Marshall Counties.

* WHEN...The snow develops later tonight and continues through
  Saturday evening. The heaviest snow is expected to fall later
  Saturday morning into Saturday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$
890 
WWUS43 KIWX 081912
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
212 PM EST Fri Dec 8 2017

INZ003-004-MIZ077-090315-
/O.CON.KIWX.WS.W.0001.171209T0600Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
212 PM EST Fri Dec 8 2017 /112 PM CST Fri Dec 8 2017/

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM EST /MIDNIGHT
CST/ SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 4 to 7 inches, 
  with localized amounts up to 9 inches, are expected.

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...The snow develops later tonight and continues through
  Saturday evening. The heaviest snow is expected to fall later
  Saturday morning into Saturday afternoon, though there could be
  a lull in the snow during this time.

* ADDITIONAL DETAILS...Winds gusting in excess of 30 mph will
  cause areas of blowing snow and whiteout conditions at times.

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.

$$

INZ005-015-016-MIZ078-090315-
/O.EXB.KIWX.WW.Y.0001.171209T1000Z-171210T0500Z/
Elkhart-Fulton IN-Kosciusko-Cass MI-
Including the cities of Elkhart, Goshen, Nappanee, Rochester, 
Akron, Warsaw, Winona Lake, Syracuse, Mentone, Dowagiac, 
Cassopolis, and Marcellus
212 PM EST Fri Dec 8 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM SATURDAY TO
MIDNIGHT EST SATURDAY NIGHT...

* WHAT...Snow is expected. Plan on slippery road conditions. In 
  addition, some reductions to visibility are expected. Total snow
  accumulations of 2 to 4 inches are expected.

* WHERE...In Indiana, Elkhart, Fulton IN and Kosciusko Counties. 
  In Michigan, Cass MI County.

* WHEN...Snow develops later tonight and continues through 
  Saturday evening. There could be a lull in the snow during the 
  late morning and afternoon. 

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing snow and low visibilities Saturday afternoon and
  evening.

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.

$$

INZ012-014-090315-
/O.CON.KIWX.WW.Y.0001.171209T0900Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
212 PM EST Fri Dec 8 2017 /112 PM CST Fri Dec 8 2017/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM EST /3 AM
CST/ SATURDAY TO MIDNIGHT EST /11 PM CST/ SATURDAY NIGHT...

* WHAT...Snow and blowing snow expected. Plan on slippery road
  conditions. In addition, areas of poor visibility are expected.
  Total snow accumulations of 3 to 6 inches are expected.

* WHERE...Starke and Marshall Counties.

* WHEN...Snow develops later tonight and continues through 
  Saturday evening. There could be a lull in the snow during the 
  late morning and afternoon. 

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing snow and low visibilities Saturday afternoon and
  evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$
563 
WWUS43 KIWX 090857
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
357 AM EST Sat Dec 9 2017

INZ012-014-091700-
/O.UPG.KIWX.WW.Y.0001.171209T0900Z-171210T0500Z/
/O.EXB.KIWX.WS.W.0001.171209T0900Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
357 AM EST Sat Dec 9 2017 /257 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT EST /11 PM CST/
TONIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult travel
  conditions. Total snow accumulations of 4 to 7 inches are 
  expected with locally higher amounts possible.

* WHERE...Starke and Marshall Counties.

* WHEN...Until midnight EST /11 PM CST/ tonight.

* ADDITIONAL DETAILS...Winds gusting as high as 35 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 are expected this afternoon. Visibilities will be near
  zero within the heavier snow bands. US highway 30 will be 
  impacted. 

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.

$$

INZ003-004-MIZ077-091700-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
357 AM EST Sat Dec 9 2017 /257 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
/11 PM CST/ TONIGHT...

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions. Snow accumulations of 5 to 8 inches are
  expected with locally higher amounts possible.

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...Until midnight EST /11 PM CST/ tonight. The heaviest snow
  squalls are expected from late this morning into mid evening. 

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause
  areas of blowing and drifting snow making travel difficult or
  impossible, especially on east west roads. Snowfall rates of 1
  to 2 inches per hour are expected this afternoon. Interstates
  94, 80 and 90 will be impacted with near zero visibilities at
  times. These conditions will increase the risk for chain
  reaction accidents. 

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.

$$

INZ005-015-016-MIZ078-091700-
/O.EXT.KIWX.WW.Y.0001.171209T0900Z-171210T0500Z/
Elkhart-Fulton IN-Kosciusko-Cass MI-
Including the cities of Elkhart, Goshen, Nappanee, Rochester, 
Akron, Warsaw, Winona Lake, Syracuse, Mentone, Dowagiac, 
Cassopolis, and Marcellus
357 AM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EST
TONIGHT...

* WHAT...Lake effect snow expected. Plan on slippery road
  conditions. In addition, some reductions to visibility are
  expected. Total snow accumulations of 2 to 5 inches are 
  expected.

* WHERE...In Indiana, Elkhart, Fulton IN and Kosciusko Counties. 
  In Michigan, Cass MI County.

* WHEN...Until midnight EST tonight.

* ADDITIONAL DETAILS...Winds gusting as high as 30 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.

$$
568 
WWUS43 KIWX 091418
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
918 AM EST Sat Dec 9 2017

INZ012-014-092230-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
918 AM EST Sat Dec 9 2017 /818 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
/11 PM CST/ TONIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 4 to 7 inches 
  are expected with locally higher amounts possible.

* WHERE...Starke and Marshall Counties.

* WHEN...Until midnight EST /11 PM CST/ tonight. The heaviest snow
  squalls are expected this afternoon into early this evening. 

* ADDITIONAL DETAILS...Winds gusting as high as 35 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 are expected this afternoon. Visibilities will be near
  zero within the heavier snow bands. US highway 30 will be
  impacted. There may be brief breaks in the snow intensity and
  coverage today. 

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.

$$

INZ003-004-MIZ077-092230-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
918 AM EST Sat Dec 9 2017 /818 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
/11 PM CST/ TONIGHT...

* WHAT...Heavy lake effect snow occurring. Plan on difficult 
  travel conditions. Snow accumulations of 5 to 8 inches are 
  expected with locally higher amounts possible.

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...Until midnight EST /11 PM CST/ tonight. The heaviest snow
  squalls are expected this afternoon into early this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause areas of blowing and drifting snow making travel 
  difficult or impossible, especially on east west roads. 
  Snowfall rates of 1 to 2 inches per hour are expected this 
  afternoon. Interstates 94, 80 and 90 will be impacted with 
  near zero visibilities at times. These conditions will 
  increase the risk for chain reaction accidents.

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.

$$

INZ005-015-016-MIZ078-092230-
/O.CON.KIWX.WW.Y.0001.000000T0000Z-171210T0500Z/
Elkhart-Fulton IN-Kosciusko-Cass MI-
Including the cities of Elkhart, Goshen, Nappanee, Rochester, 
Akron, Warsaw, Winona Lake, Syracuse, Mentone, Dowagiac, 
Cassopolis, and Marcellus
918 AM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST
TONIGHT...

* WHAT...Lake effect snow showers expected. Plan on slippery road
  conditions. In addition, some reductions to visibility are
  expected. Total snow accumulations of 2 to 5 inches are
  expected. The heavier snowfall totals are expected across far
  western portions of Cass, Elkhart, and Kosciusko counties. 
  Snowfall totals may near 6 inches in Fulton County if stronger 
  banding sets up over the area.

* WHERE...In Indiana, Elkhart, Fulton IN and Kosciusko Counties. 
  In Michigan, Cass MI County.

* WHEN...Until midnight EST tonight. 

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing and drifting snow. There will likely be breaks 
  in the snow intensity and coverage today. 

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.

$$
454 
WWUS43 KIWX 091610
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
1110 AM EST Sat Dec 9 2017

INZ012-014-100015-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0500Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
1110 AM EST Sat Dec 9 2017 /1010 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
/11 PM CST/ TONIGHT...

* WHAT...Heavy lake effect snow expected. Plan on difficult 
  travel conditions. Total snow accumulations of 4 to 7 inches 
  are expected with locally higher amounts possible.

* WHERE...Starke and Marshall Counties.

* WHEN...Until midnight EST /11 PM CST/ tonight. The heaviest snow
  squalls are expected this afternoon into early this evening. 

* ADDITIONAL DETAILS...Winds gusting as high as 35 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 are expected this afternoon. Visibilities will be near
  zero within the heavier snow bands. US highway 30 will be
  impacted. There may be brief breaks in the snow intensity and
  coverage today. 

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.

$$

INZ003-004-MIZ077-100015-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0500Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
1110 AM EST Sat Dec 9 2017 /1010 AM CST Sat Dec 9 2017/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EST
/11 PM CST/ TONIGHT...

* WHAT...Heavy lake effect snow occurring. Plan on difficult 
  travel conditions. Snow accumulations of 5 to 8 inches are 
  expected with locally higher amounts possible.

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...Until midnight EST /11 PM CST/ tonight. 

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will 
  cause areas of blowing and drifting snow making travel 
  difficult or impossible, especially on east west roads. 
  Snowfall rates of 1 to 2 inches per hour are expected this 
  afternoon. Interstates 94, 80 and 90 will be impacted with 
  near zero visibilities at times. These conditions will 
  increase the risk for chain reaction accidents.

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.

$$

INZ013-100015-
/O.EXB.KIWX.WW.Y.0001.000000T0000Z-171210T0100Z/
Pulaski-
Including the cities of Winamac, Francesville, and Medaryville
1010 AM CST Sat Dec 9 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM CST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on slippery road
  conditions. Total snow accumulations will range between 1 and 5
  inches, heaviest across northeast Pulaski County. 

* WHERE...Pulaski County.

* WHEN...Until 7 PM CST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing snow. Visibilities may be reduced to near zero at
  times with heavier snow squalls.

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.

$$

INZ005-015-016-MIZ078-100015-
/O.CON.KIWX.WW.Y.0001.000000T0000Z-171210T0500Z/
Elkhart-Fulton IN-Kosciusko-Cass MI-
Including the cities of Elkhart, Goshen, Nappanee, Rochester, 
Akron, Warsaw, Winona Lake, Syracuse, Mentone, Dowagiac, 
Cassopolis, and Marcellus
1110 AM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST
TONIGHT...

* WHAT...Lake effect snow showers expected. Plan on slippery road
  conditions. In addition, some reductions to visibility are
  expected. Total snow accumulations of 2 to 5 inches are
  expected. The heavier snowfall totals are expected across far
  western portions of Cass, Elkhart, and Kosciusko counties. 
  Snowfall totals may near 6 inches in Fulton County if stronger 
  banding sets up over the area.

* WHERE...In Indiana, Elkhart, Fulton IN and Kosciusko Counties. 
  In Michigan, Cass MI County.

* WHEN...Until midnight EST tonight. 

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing and drifting snow. There will likely be breaks 
  in the snow intensity and coverage today. 

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.

$$
281 
WWUS43 KIWX 092013
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
313 PM EST Sat Dec 9 2017

INZ005-016-MIZ078-092115-
/O.CAN.KIWX.WW.Y.0001.000000T0000Z-171210T0500Z/
Elkhart-Kosciusko-Cass MI-
Including the cities of Elkhart, Goshen, Nappanee, Warsaw, 
Winona Lake, Syracuse, Mentone, Dowagiac, Cassopolis, 
and Marcellus
313 PM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

The snow has diminished across the area with only light snow
showers and flurries expected into this evening. 

$$

INZ012-014-100400-
/O.EXT.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
Starke-Marshall-
Including the cities of Knox, North Judson, Bass Lake, Plymouth, 
Bremen, and Culver
313 PM EST Sat Dec 9 2017 /213 PM CST Sat Dec 9 2017/

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM EST /10 PM CST/
THIS EVENING...

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions. Additional snow accumulations of 2 to 6
  inches will be possible, heaviest across western Marshall and
  eastern Starke counties. 

* WHERE...Starke and Marshall Counties.

* WHEN...Until 11 PM EST /10 PM CST/ this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 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 are expected. Visibilities will be near zero within 
  the heavier snow bands. US highway 30 will be impacted. There 
  may be brief breaks in the snow intensity and coverage today. 

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.

$$

INZ003-004-MIZ077-100400-
/O.EXT.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
La Porte-St. Joseph IN-Berrien-
Including the cities of Michigan City, La Porte, South Bend, 
Mishawaka, New Carlisle, Walkerton, Niles, Benton Harbor, 
St. Joseph, Fair Plain, Benton Heights, Buchanan, 
and Paw Paw Lake
313 PM EST Sat Dec 9 2017 /213 PM CST Sat Dec 9 2017/

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM EST /10 PM CST/
THIS EVENING...

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions. Additional snow accumulations of 3 to 6 
  inches are expected. 

* WHERE...In Indiana, La Porte and St. Joseph IN Counties. In 
  Michigan, Berrien County.

* WHEN...Until 11 PM EST /10 PM CST/ this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph will cause
  areas of blowing and drifting snow making travel difficult or
  impossible, especially on east west roads. Snowfall rates of 1
  to 2 inches per hour are expected. Interstates 94, 80 and 90 
  will be impacted with near zero visibilities at times. These 
  conditions will increase the risk for chain reaction accidents.

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.

$$

INZ015-100300-
/O.EXT.KIWX.WW.Y.0001.000000T0000Z-171210T0300Z/
Fulton IN-
Including the cities of Rochester and Akron
313 PM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 PM EST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on slippery road 
  conditions. In addition, some reductions to visibility are 
  expected. Additional snow accumulations of 1 to 3 inches are 
  expected.

* WHERE...Fulton IN County.

* WHEN...Until 10 PM EST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 30 mph will cause
  patchy blowing and drifting snow. Visibilities may be reduced to
  near zero at times with heavier snow squalls.

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.

$$

INZ013-100100-
/O.CON.KIWX.WW.Y.0001.000000T0000Z-171210T0100Z/
Pulaski-
Including the cities of Winamac, Francesville, and Medaryville
213 PM CST Sat Dec 9 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM CST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on slippery road
  conditions. In addition, some reductions to visibility are
  expected. Additional snow accumulations of 1 to 3 inches will be
  possible, heaviest across northeast Pulaski County. Visibilities
  may be reduced to near zero at times with heavier snow squalls.

* WHERE...Pulaski County.

* WHEN...Until 7 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.

$$
671 
WWUS43 KIWX 092354
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
654 PM EST Sat Dec 9 2017

INZ003-012-100100-
/O.CAN.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
La Porte-Starke-
Including the cities of Michigan City, La Porte, Knox, 
North Judson, and Bass Lake
554 PM CST Sat Dec 9 2017

...WINTER STORM WARNING IS CANCELLED...

Snow had diminished to scattered flurries this evening with no 
additional accumulation expected.

$$

INZ013-100100-
/O.CAN.KIWX.WW.Y.0001.000000T0000Z-171210T0100Z/
Pulaski-
Including the cities of Winamac, Francesville, and Medaryville
554 PM CST Sat Dec 9 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow had diminished to scattered flurries this evening with no 
additional accumulation expected.

$$

INZ014-100400-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
Marshall-
Including the cities of Plymouth, Bremen, and Culver
654 PM EST Sat Dec 9 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM EST THIS
EVENING...

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions this evening. Additional snow accumulations 
  of 1 to 2 inches are expected.

* WHERE...Marshall County.

* WHEN...Through 9 PM EST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 25 mph may cause
  some 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.

$$

INZ004-MIZ077-100400-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
St. Joseph IN-Berrien-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Niles, Benton Harbor, St. Joseph, Fair Plain, 
Benton Heights, Buchanan, and Paw Paw Lake
654 PM EST Sat Dec 9 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM EST THIS
EVENING...

* WHAT...Heavy lake effect snow occurring. Plan on difficult
  travel conditions this evening. Additional snow accumulations of
  1 to 2 inches are expected.

* WHERE...In Indiana, St. Joseph IN County. In Michigan, Berrien 
  County.

* WHEN...Through 11 PM EST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 25 mph may cause
  some 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.

$$

INZ015-100300-
/O.CON.KIWX.WW.Y.0001.000000T0000Z-171210T0300Z/
Fulton IN-
Including the cities of Rochester and Akron
654 PM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

* WHAT...Lake effect snow occurring. Plan on slippery road
  conditions this evening. In addition, some reductions to
  visibility are expected. Additional snow accumulations of up to
  1 inch is expected.

* WHERE...Fulton IN County.

* WHEN...Until 10 PM EST this evening.

* ADDITIONAL DETAILS...Winds gusting as high as 25 mph may cause
  some 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.

$$
413 
WWUS43 KIWX 100213
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
913 PM EST Sat Dec 9 2017

INZ014-100315-
/O.CAN.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
Marshall-
Including the cities of Plymouth, Bremen, and Culver
913 PM EST Sat Dec 9 2017

...WINTER STORM WARNING IS CANCELLED...

Snow had diminished to scattered flurries this evening with no 
additional accumulation expected.

$$

INZ015-100315-
/O.CAN.KIWX.WW.Y.0001.000000T0000Z-171210T0300Z/
Fulton IN-
Including the cities of Rochester and Akron
913 PM EST Sat Dec 9 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow had diminished to scattered flurries this evening with no 
additional accumulation expected.

$$

INZ004-MIZ077-100400-
/O.CON.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
St. Joseph IN-Berrien-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Niles, Benton Harbor, St. Joseph, Fair Plain, 
Benton Heights, Buchanan, and Paw Paw Lake
913 PM EST Sat Dec 9 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM EST THIS
EVENING...

* WHAT...Lake effect snow will diminish to flurries by 11 pm EST.
  Travel conditions will remain difficult. Additional snow 
  accumulations of up to one half inch are expected.

* WHERE...In Indiana, St. Joseph IN County. In Michigan, Berrien 
  County.

* WHEN...Until 11 PM EST this evening.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times east of the MI 140/IN 331 corridor.

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.

$$
034 
WWUS43 KIWX 100253
WSWIWX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Northern Indiana
953 PM EST Sat Dec 9 2017

INZ004-MIZ077-100400-
/O.CAN.KIWX.WS.W.0001.000000T0000Z-171210T0400Z/
St. Joseph IN-Berrien-
Including the cities of South Bend, Mishawaka, New Carlisle, 
Walkerton, Niles, Benton Harbor, St. Joseph, Fair Plain, 
Benton Heights, Buchanan, and Paw Paw Lake
953 PM EST Sat Dec 9 2017

...WINTER STORM WARNING IS CANCELLED...

Snow had diminished to scattered flurries late this evening with 
no additional accumulation expected.

$$

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 Northern Indiana wrote its last area forecast discussion before this winter storm warning went out at Dec 8, 12:34 AM EST, 3 hours 24 minutes earlier.

Area forecast discussion, Dec 8, 12:34 AM EST, 3 hours 24 minutes before
Area Forecast Discussion
National Weather Service Northern Indiana
1234 AM EST Fri Dec 8 2017

.SYNOPSIS...
Issued at 1227 AM EST Fri Dec 8 2017

Partly to mostly clear skies will continue overnight. Low
temperatures will drop down to the teens and low 20s. We'll see
increasing cloud cover throughout the day Friday as a clipper
system approaches the area. Highs will be in the 30s. This system
will bring widespread light snow to the entire area Friday night
into Saturday morning. Most locations will receive between 1 and
3 inches of snow. This will transition to lake effect snow across
northwest Indiana and southwest Lower Michigan Saturday afternoon
into Saturday evening, with locally higher accumulations possible.

&&

.SHORT TERM...(This Evening through Friday)
Issued at 248 PM EST Thu Dec 7 2017

Leftover light lake effect snow showers and flurries, mainly north of
US 20 in far nrn IN/lower MI, will continue to diminish in coverage
and intensity late this afternoon into early this evening. This
will occur as inversion heights lower in response to drying/subsidence
and gradual low level backing. Little additional accumulations/impacts
are anticipated. Dry and continued chilly otherwise into tonight and
Friday...with sunny skies tomorrow morning giving away to increasing
afternoon clouds across nw IN/lower MI in advance of the next
shortwave.

&&

.LONG TERM...(Friday Night through Thursday)
Issued at 248 PM EST Thu Dec 7 2017

An active northwest flow regime will remain in place into this
weekend and next week thanks to a highly amplified western NOAM
ridge/eastern NOAM upper trough +PNA configuration. The result will
be a continuation of below normal temps and several opportunities
for snow (and lake effect snow) as several vort lobes rotate
southeast through the Great Lakes and Ohio Valley.

The first mid level shortwave will impact the local area later
Friday night into Saturday morning. This feature continues to look
rather impressive as it drops almost due south from the Arctic Cycle
with pv intrusion deep to near 700 mb. Associated mid level
DCVA/100-150m 5H height falls will elicit a period of stronger
isentropic ascent (40 kts of cross isobaric flow) along and in
advance of system sfc trough later Friday night through mid
morning Saturday morning. A period of light snow will accompany
this forcing, though amounts should generally be limited to 1-3"
given limited moisture return and rather quick west to east
progression of this large scale synoptic forcing. Snow showers
will likely persist into the late morning and early afternoon
under the vort max, with heavier/brief bursts possible given
steepening low-mid level lapse rates under cold(er) pocket aloft.
Roads will likely be slick in many locations during this time.
Will continue to cover possible impacts through social media and
HWO for now.

Attention later Saturday morning through Saturday evening will turn
to possible significant lake enhanced/effect snow into our nnw
flow lake belts. A single band or a couple stronger multi-bands
look to set up set up as nnw flow parallels the long axis of the
lake resulting in strong frictional/thermal convergence over
eastern Lake MI, especially morning through early afternoon given
deeper layer synoptic support. Good omega and super- saturation
with respect to ice within the dendritic growth zone (per latest
fcst soundings) continues to hint at the potential for decent
flake size/snow-to-liquid ratios wherever shallow convection
organizes (possibly offset some by stronger winds). Brief Lake
Superior/long Lake MI connection and sufficient thermodynamics
(lake-800 mb differentials in the 20s/inversion heights 7-10
kft/0-2km theta-e lapse rates to -2 k/km) are also in place even
into the aftn/eve as any synoptic moisture/support exits off to
the east. So, the potential is definitely there for a headline
level event. However, the obvious uncertainties at this fcst range
are where exactly better banding materializes (pivots) and if the
diurnal component/disruption and stronger boundary layer flow
keeps activity more cellular. With that said think there is enough
confidence and model agreement to issue a Winter Storm Watch (>50%
confidence) for LaPorte/St Joe IN/Berrien counties later Friday
night through Saturday evening. Opted to leave surrounding
counties (Starke/Marshall/Elkhart/Cass MI) out of a watch for now
as not as confident in persistence of LES and warning level
impacts. Anticipate these areas needing at least a SPS or advisory
at some point.

The pattern remains relentless into next week as several
more clipper systems move through with snow chances (followed by
heavier lake effect snow?) and reinforcing shots of cold air. The
upper wave on Monday and another LES event in its wake Monday
night/Tuesday looks to be the next clipper system to watch.
The responsible pv anomaly appears to have a more pronounced low-
mid level thermal gradient and slightly better moisture to work
with around Monday. This could result in another 1-3" or more type
swath of snow (mainly along/north of US 30 per latest
guidance)...possibly followed by another LES event.

&&

.AVIATION...(For the 06Z TAFS through 06Z Friday Night)
Issued at 1227 AM EST Fri Dec 8 2017

VFR Conditions prevail through the TAF period, with the primary
concern being increasing southwesterly winds Friday afternoon ahead
of the incoming clipper system. Expect increasing clouds towards the
later end of the period, with maybe some light snow at KSBN around 4-
6Z Friday night. Greater snow impacts are expected just beyond the
TAF period, but will cover more about that in the next update.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Winter Storm Watch from late tonight through Saturday evening
     for INZ003-004.

MI...Winter Storm Watch from late tonight through Saturday evening
     for MIZ077.

OH...NONE.
LM...Small Craft Advisory until 5 PM EST Saturday for LMZ043-046.

&&

SYNOPSIS...MCD
SHORT TERM...Steinwedel
LONG TERM...Steinwedel
AVIATION...MCD

Visit us at www.weather.gov/iwx

Follow us on Facebook...Twitter...and YouTube at:
www.facebook.com/NWSNorthernIndiana
www.twitter.com/nwsiwx
www.youtube.com/NWSNorthernIndiana
Hazardous weather outlook, Dec 7, 2:22 PM EST, 13 hours 36 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Northern Indiana
222 PM EST Thu Dec 7 2017

INZ003-004-MIZ077-081930-
La Porte-St. Joseph IN-Berrien-
255 PM EST Thu Dec 7 2017 /155 PM CST Thu Dec 7 2017/

This hazardous weather outlook is for portions of southwest Michigan
and northern Indiana.

.DAY ONE...This afternoon and Tonight

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A Winter Storm Watch is in effect late Friday evening through
Saturday evening.

Another system may bring additional snow and impacts to travel Monday
into Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

INZ005-012-014-MIZ078-081930-
Elkhart-Starke-Marshall-Cass MI-
255 PM EST Thu Dec 7 2017 /155 PM CST Thu Dec 7 2017/

This hazardous weather outlook is for portions of southwest Michigan
and northern Indiana.

.DAY ONE...This afternoon and Tonight

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Snow is expected late Friday night into Saturday morning with a
transition to lake effect snow showers Saturday afternoon and
evening. Snowfall amounts through Saturday morning will likely be
between 1 and 3 inches. Additional accumulations are possible
Saturday afternoon and evening. Amounts will vary depending on where
an intense lake effect snow band sets up and how far inland it moves.
Northwest Winds of 15 to 20 mph are possible as well on Saturday.

Another system may bring additional snow and impacts to travel Monday
into Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

INZ006>009-013-015>018-020-022>027-032>034-MIZ079>081-OHZ001-002-004-
005-015-016-024-025-081930-
Lagrange-Steuben-Noble-De Kalb-Pulaski-Fulton IN-Kosciusko-Whitley-
Allen IN-White-Cass IN-Miami-Wabash-Huntington-Wells-Adams-Grant-
Blackford-Jay-St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-
Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
255 PM EST Thu Dec 7 2017 /155 PM CST Thu Dec 7 2017/

This hazardous weather outlook is for portions of northern Indiana...
southwest Michigan and northwest Ohio.

.DAY ONE...This afternoon and Tonight

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Light snow may impact travel late Friday night into Saturday morning.
Snowfall totals are expected to range between 1 and 3 inches.

Another system may bring additional light snow and impacts to travel
Monday into Tuesday...mainly along and north of US 30.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

LMZ043-046-081930-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
255 PM EST Thu Dec 7 2017

This hazardous weather outlook is for portions of The Nearshore
Waters of Southeastern Lake Michigan.

.DAY ONE...This afternoon and Tonight

Conditions hazardous to small craft are expected to continue into
tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Conditions hazardous to small craft are expected for much of this
period.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 8, 3:47 AM ESTGale WatchIWX7 hr
Dec 8, 3:58 AM ESTWinter Weather AdvisoryIWXElkhart, Fulton, Marshall, Pulaski, Starke41 hr
Dec 8, 11:04 AM ESTGale WarningIWX35 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.