Alert archive / Kentucky / Winter Storm Warnings in 2018

Winter Storm Warning 4, NWS Louisville, KY

March 11, 201827 counties in Kentucky; Harrison County, Perry County, Indiana

NWS Louisville, KY issued this winter storm warning at Mar 11, 2018, 1:33 PM EDT for 27 counties in Kentucky; Harrison County, Perry County, Indiana. It took effect at Mar 11, 2018, 8:00 PM EDT. It was in force for 12 hr. 49 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
Mar 11, 2018, 1:33 PM EDT (17:33 UTC)
In effect from
Mar 11, 2018, 8:00 PM EDT
Expired
Mar 12, 2018, 8:00 AM EDT
In force
12 hr
Issued by
NWS Louisville, KY
All 29 counties

Harrison County, IN, Perry County, IN, Anderson County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Casey County, KY, Clark County, KY, Edmonson County, KY, Fayette County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Nelson County, KY, Ohio County, KY, Taylor County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 51 km from the middle of the area, began a volume at 17:34 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
Mar 11, 9:02 PM EDTSNOW 3.52 N Tell City, IN
Mar 11, 9:39 PM EDTSNOW 13 W Perryville, KY
Mar 11, 10:30 PM EDTSNOW 3Derby, IN
Mar 11, 11:30 PM EDTSNOW 2Corydon, IN
Mar 11, 11:30 PM EDTSNOW 5Tell City, INREPORTS OF POWER LINES AND TREES DOWN.
Mar 11, 11:39 PM EDTSNOW 1.52 S Vine Grove, KY
Mar 12, 12:21 AM EDTSNOW 4.51 N Mcquady, KY
Mar 12, 12:29 AM EDTSNOW 4Springfield, KYTWITTER.
Mar 12, 12:45 AM EDTSNOW 53 W Perryville, KY
Mar 12, 1:00 AM EDTSNOW 35 W Lexington, KYREPORTED AT LEXINGTON BLUE GRASS AIRPORT.
Mar 12, 1:02 AM EDTSNOW 32 S Vine Grove, KY
Mar 12, 1:04 AM EDTSNOW 3.8Lawrenceburg, KY
Mar 12, 1:47 AM EDTSNOW 1.5Leitchfield, KY
Mar 12, 2:00 AM EDTSNOW 4.1Lexington, KY
Mar 12, 2:01 AM EDTSNOW 3Elizabethtown, KY
Mar 12, 2:15 AM EDTSNOW 4.53 Nnw Lexington, KYMEASURED ON GRASS.
Mar 12, 3:00 AM EDTSNOW 4.53 Sw Lexington, KY
Mar 12, 3:12 AM EDTSNOW 3.35 Sse Paint Lick, KYSTILL SNOWING HEAVILY ON OLD WALLACETOWN ROAD.
Mar 12, 3:19 AM EDTSNOW 66 Ene Keene, KYSOUTHPOINT AREA OF LEXINGTON. ALSO 6 INCH SNOWFALL REPORTED ON SE SIDE OF LEXINGTON.
Mar 12, 3:35 AM EDTSNOW 4Lawrenceburg, KYSEVERAL REPORTS OF LIMBS COMING DOWN AND POWER OUTAGES DUE TO SNOW.
Mar 12, 4:04 AM EDTSNOW 85 Ese Lexington, KYANDOVER AREA OF LEXINGTON.
Mar 12, 4:55 AM EDTSNOW 7.8Winchester, KY
Mar 12, 5:02 AM EDTSNOW 5.5Perryville, KYREPORTS OF TREES AND POWER LINES DOWN.
Mar 12, 5:36 AM EDTSNOW 10.53 Sse Lexington, KY
Mar 12, 5:38 AM EDTSNOW 6Stanford, KY
Mar 12, 5:54 AM EDTSNOW 82 Wnw Ford, KY
Mar 12, 6:00 AM EDTSNOW 2.54 Nw Liberty, KY
Mar 12, 6:00 AM EDTSNOW 53 Ssw Doe Valley, KY
Mar 12, 6:17 AM EDTSNOW 3Beaver Dam, KY
Mar 12, 6:29 AM EDTSNOW 6.55 Sse Paint Lick, KY
Mar 12, 6:35 AM EDTSNOW 3.91 Wsw Lawrenceburg, KY
Mar 12, 6:44 AM EDTSNOW 56 N Spears, KY
Mar 12, 6:46 AM EDTSNOW 74 E Richmond, KY
Mar 12, 7:00 AM EDTSNOW 23 Se Hillview, KY
Mar 12, 7:00 AM EDTSNOW 2.31 N Danville, KY
Mar 12, 7:00 AM EDTSNOW 33 W Big Spring, KY
Mar 12, 7:00 AM EDTSNOW 4Buffalo, KY
Mar 12, 7:00 AM EDTSNOW 53 Nnw Salvisa, KY
Mar 12, 7:09 AM EDTSNOW 2.54 Sw Leitchfield, KY
Mar 12, 7:09 AM EDTSNOW 5Lawrenceburg, KYSTORM TOTAL.
Mar 12, 7:10 AM EDTSNOW 64 Nw Lexington, KYIN MASTERSON STATION.
Mar 12, 7:18 AM EDTSNOW 5.85 Nw Lexington, KY
Mar 12, 7:19 AM EDTSNOW 11 N Rochester, KY
Mar 12, 7:19 AM EDTSNOW 2.54 Sw Leitchfield, KY
Mar 12, 7:50 AM EDTSNOW 41 N Fort Knox, KYGODMAN ARMY AIRFIELD.
Mar 12, 8:00 AM EDTSNOW 33 Ene Falls Of Rough, KYROUGH RIVER LAKE SRP.
Mar 12, 8:00 AM EDTSNOW 9Paint Lick, KY
Mar 12, 8:00 AM EDTSNOW 9Perryville, KY
Mar 12, 8:05 AM EDTSNOW 95 Ne Keene, KYDRIFTS UP TO 12 INCHES.

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.6 hours before the alert went out and 199 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, Nashville Metro, TN at 12:00Z on 2018-03-11Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2018-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

544 
WWUS43 KLMK 111733
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
133 PM EDT Sun Mar 11 2018

...Accumulating Snow This Evening and Tonight...

.Rain will changeover to wet snow across southern Indiana and central
Kentucky this evening, becoming heavy wet snow at times 
overnight. Accumulations of 3 to 6 inches are expected across
central Kentucky with localized higher amounts possible. Across 
far southern Kentucky, north central Kentucky and portions of
southern Indiana, 1 to 4 inches are expected.

KYZ023-024-026>028-053>057-061>067-120800-
/O.UPG.KLMK.WW.Y.0010.180312T0000Z-180312T1200Z/
/O.NEW.KLMK.WS.W.0004.180312T0000Z-180312T1200Z/
Hancock-Breckinridge-Ohio-Grayson-Hardin-Larue-Marion-Boyle-
Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
Hartford, Leitchfield, Elizabethtown, Hodgenville, Lebanon, 
Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
133 PM EDT Sun Mar 11 2018 /1233 PM CDT Sun Mar 11 2018/

...WINTER STORM WARNING IN EFFECT FROM 8 PM EDT /7 PM CDT/ THIS
EVENING TO 8 AM EDT /7 AM CDT/ MONDAY...

* WHAT...Moderate to heavy snow. Total snow accumulations of 3 to
  6 inches are expected with locally higher amounts.

* WHERE...Portions of central Kentucky.

* WHEN...This evening through Monday morning. Heaviest snow
  overnight.

* ADDITIONAL DETAILS...Plan on difficult travel conditions
  including during the morning commute on Monday. Be prepared for
  significant reductions in visibility at times. Expect northeast
  winds gusting 20 to 30 mph at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions 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.

&&

$$

INZ084-089>092-KYZ030>037-043-120800-
/O.EXA.KLMK.WW.Y.0010.180312T0000Z-180312T1200Z/
Crawford-Perry-Harrison-Floyd-Clark-Jefferson-Oldham-Trimble-
Henry-Shelby-Franklin-Scott-Nicholas-
Including the cities of English, Tell City, Corydon, New Albany, 
Jeffersonville, Louisville, La Grange, Bedford, Milton, 
New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, 
and Carlisle
133 PM EDT Sun Mar 11 2018 /1233 PM CDT Sun Mar 11 2018/

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM EDT /7 PM CDT/
THIS EVENING TO 8 AM EDT /7 AM CDT/ MONDAY...

* WHAT...1 to 3 inches of snow are expected.

* WHERE...Portions of southern Indiana and north central Kentucky.

* WHEN...This evening through Monday morning. Heaviest snow
  overnight.

* ADDITIONAL DETAILS...Plan on difficult travel conditions,
  including during the morning commute on Monday. Be prepared for
  reduced visibilities at times. Expect northeast winds gusting 20
  to 30 mph at times.

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.

&&

$$

KYZ025-029-038>042-045>049-070>078-081-082-120800-
/O.CON.KLMK.WW.Y.0010.180312T0000Z-180312T1200Z/
Meade-Bullitt-Spencer-Anderson-Woodford-Fayette-Bourbon-Nelson-
Washington-Mercer-Jessamine-Clark-Logan-Warren-Simpson-Allen-
Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Brandenburg, Shepherdsville, 
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, 
Bardstown, Springfield, Harrodsburg, Nicholasville, Winchester, 
Russellville, Bowling Green, Franklin, Providence, Scottsville, 
Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, 
Burkesville, and Albany
133 PM EDT Sun Mar 11 2018 /1233 PM CDT Sun Mar 11 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM EDT /7 PM
CDT/ THIS EVENING TO 8 AM EDT /7 AM CDT/ MONDAY...

* WHAT...2 to 4 inches of snow expected, with localized higher
  amounts.

* WHERE...Portions of central and south central Kentucky.

* WHEN...This evening through Monday morning. Heaviest snow
  overnight.

* ADDITIONAL DETAILS...Plan on difficult travel conditions,
  including during the morning commute on Monday. Be prepared for
  reduced visibilities at times. Expect northeast winds gusting 20
  to 30 mph at times.

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.

&&

$$

AMS
8 follow-up statements
803 
WWUS43 KLMK 112201
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
601 PM EDT Sun Mar 11 2018

...Accumulating Snow This Evening and Tonight...

.Rain will changeover to wet snow across southern Indiana and
central Kentucky late this afternoon and evening, becoming heavy 
wet snow at times overnight. Accumulations of 4 to 6 inches are 
forecast across central Kentucky with localized higher amounts 
possible. Across far southern Kentucky, north central Kentucky and
portions of southern Indiana, 1 to 4 inches are forecast.

KYZ025-029-039>041-045>049-120815-
/O.UPG.KLMK.WW.Y.0010.180312T0000Z-180312T1200Z/
/O.EXA.KLMK.WS.W.0004.180312T0000Z-180312T1200Z/
Meade-Bullitt-Anderson-Woodford-Fayette-Nelson-Washington-Mercer-
Jessamine-Clark-
Including the cities of Brandenburg, Shepherdsville, 
Lawrenceburg, Versailles, Lexington, Bardstown, Springfield, 
Harrodsburg, Nicholasville, and Winchester
601 PM EDT Sun Mar 11 2018

...WINTER STORM WARNING IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 2 to 4 
  inches, with localized amounts up to 6 inches, are expected.

* WHERE...Portions of east central and north central Kentucky.

* WHEN...Transition to snow will start in the next couple of hours
  west of the I-65 corridor...with a late evening transition east
  of I-65. Snow should taper off by daybreak Monday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions 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.

&&

$$

KYZ023-024-026>028-053>057-061>067-120815-
/O.CON.KLMK.WS.W.0004.180312T0000Z-180312T1200Z/
Hancock-Breckinridge-Ohio-Grayson-Hardin-Larue-Marion-Boyle-
Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
Hartford, Leitchfield, Elizabethtown, Hodgenville, Lebanon, 
Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
601 PM EDT Sun Mar 11 2018 /501 PM CDT Sun Mar 11 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ MONDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 3 to 6 
  inches, with localized amounts up to 8 inches, are expected.

* WHERE...Portions of east central, north central, northwest and 
  south central Kentucky.

* WHEN...Transition to snow will start in the next couple of hours
  west of the I-65 corridor...with a late evening transition east
  of I-65. Snow should taper off by daybreak Monday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions 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.

&&

$$

INZ076>079-083-120815-
/O.EXB.KLMK.WW.Y.0010.180311T2201Z-180312T1200Z/
Orange-Washington-Scott-Jefferson-Dubois-
Including the cities of Paoli, Salem, Scottsburg, Madison, 
and Jasper
601 PM EDT Sun Mar 11 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 AM EDT MONDAY...

* WHAT...Snow. Snow accumulations of up to one inch are expected.

* WHERE...Orange, Washington, Scott, Jefferson and Dubois 
  Counties.

* WHEN...Light to moderate snow is ongoing now. A brief transition
  to rain is possible through the evening hours. Snow should end
  soon after Midnight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

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.

&&

$$

INZ084-089>092-KYZ030>038-042-043-070>078-081-082-120815-
/O.CON.KLMK.WW.Y.0010.180312T0000Z-180312T1200Z/
Crawford-Perry-Harrison-Floyd-Clark-Jefferson-Oldham-Trimble-
Henry-Shelby-Franklin-Scott-Spencer-Bourbon-Nicholas-Logan-Warren-
Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-
Clinton-
Including the cities of English, Tell City, Corydon, New Albany, 
Jeffersonville, Louisville, La Grange, Bedford, Milton, 
New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana, 
Taylorsville, Paris, Carlisle, Russellville, Bowling Green, 
Franklin, Providence, Scottsville, Glasgow, Tompkinsville, 
Edmonton, Columbia, Jamestown, Burkesville, and Albany
601 PM EDT Sun Mar 11 2018 /501 PM CDT Sun Mar 11 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ MONDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 4 
  inches are expected.

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

* WHEN...Transition to snow will start in the next couple of hours
  west of the I-65 corridor...with a late evening transition east
  of I-65. Snow should taper off around daybreak Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

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.

&&

$$

RJS
176 
WWUS43 KLMK 120120
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
920 PM EDT Sun Mar 11 2018

...Accumulating Snow This Evening and Tonight...

.Winter storm crossing the region this evening. Accumulations of 
4 to 8 inches are forecast across central Kentucky with localized
higher amounts possible. Across far southern Kentucky, north 
central Kentucky and portions of southern Indiana, 1 to 4 inches 
are forecast.

INZ078-079-120230-
/O.CAN.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Scott-Jefferson-
Including the cities of Scottsburg and Madison
920 PM EDT Sun Mar 11 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

The heaviest of the snow has stayed south of the Scott and
Jefferson county. Very light snowfall is possible the rest of the
night, but the threat for impactful snow has ended.

$$

INZ089-090-120600-
/O.UPG.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
/O.EXA.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Perry-Harrison-
Including the cities of Tell City and Corydon
920 PM EDT Sun Mar 11 2018 /820 PM CDT Sun Mar 11 2018/

...WINTER STORM WARNING IN EFFECT UNTIL 8 AM EDT /7 AM CDT/
MONDAY...

* WHAT...Heavy snow. Additional snow accumulations of 1 to 3
  inches are expected. Making for totals 3 to 6 inches.

* WHERE...Perry and Harrison Counties.

* WHEN...Moderate to heavy snow will for continue for the next
  several hours. Slick roads likely will remain to morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions 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.

&&

$$

KYZ023>029-039>041-045>049-053>057-061>067-120600-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-Anderson-
Woodford-Fayette-Nelson-Washington-Mercer-Jessamine-Clark-Larue-
Marion-Boyle-Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-
Casey-Lincoln-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
Brandenburg, Hartford, Leitchfield, Elizabethtown, 
Shepherdsville, Lawrenceburg, Versailles, Lexington, Bardstown, 
Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville,
Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
920 PM EDT Sun Mar 11 2018 /820 PM CDT Sun Mar 11 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ MONDAY...

* WHAT...Heavy snow. Additional snow accumulations of 4 to 8 
  inches are expected.

* WHERE...Portions of east central, north central, northwest and 
  south central Kentucky.

* WHEN...Snow is beginning for many locations this hour and will
  continue to just before daybreak Monday.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions 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.

&&

$$

INZ076-077-083-120500-
/O.EXT.KLMK.WW.Y.0010.000000T0000Z-180312T0500Z/
Orange-Washington-Dubois-
Including the cities of Paoli, Salem, and Jasper
920 PM EDT Sun Mar 11 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 1 AM EDT MONDAY...

* WHAT...Snow. Additional snow accumulations of up to an inch are
  expected...bringing totals to 1 to 2 inches.

* WHERE...Orange, Washington and Dubois Counties.

* WHEN...Snow should end before Midnight EDT.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

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.

&&

$$

INZ084-091-092-KYZ030>038-042-043-070>078-081-082-120600-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Crawford-Floyd-Clark-Jefferson-Oldham-Trimble-Henry-Shelby-
Franklin-Scott-Harrison-Spencer-Bourbon-Nicholas-Logan-Warren-
Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-
Clinton-
Including the cities of English, New Albany, Jeffersonville, 
Louisville, La Grange, Bedford, Milton, New Castle, Shelbyville, 
Frankfort, Georgetown, Cynthiana, Taylorsville, Paris, Carlisle, 
Russellville, Bowling Green, Franklin, Providence, Scottsville, 
Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, 
Burkesville, and Albany
920 PM EDT Sun Mar 11 2018 /820 PM CDT Sun Mar 11 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ MONDAY...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches are
  expected. Some locations may get totals to near 4 inches.

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

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

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.

&&

$$

RJS
320 
WWUS43 KLMK 120600
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
200 AM EDT Mon Mar 12 2018

...Snow Continues Through Early Morning...

.Accumulations of 4 to 8 inches are expected across portions of
central and east central Kentucky. The back edge of the snow will
continue moving across the area, and precipitation is expected to
end by daybreak.

INZ089-090-120700-
/O.CAN.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Perry-Harrison-
Including the cities of Tell City and Corydon
200 AM EDT Mon Mar 12 2018 /100 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING IS CANCELLED...

Snow has ended. Some slushy accumulations may linger on secondary
and untreated roadways however.

$$

INZ084-091-092-KYZ032-120700-
/O.CAN.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Crawford-Floyd-Clark-Trimble-
Including the cities of English, New Albany, Jeffersonville, 
Bedford, and Milton
200 AM EDT Mon Mar 12 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended across the area. Some slushy accumulations may
linger on secondary and untreated roadways however.

$$

KYZ023>029-039>041-045>049-053>057-061>067-121200-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-Anderson-
Woodford-Fayette-Nelson-Washington-Mercer-Jessamine-Clark-Larue-
Marion-Boyle-Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-
Casey-Lincoln-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
Brandenburg, Hartford, Leitchfield, Elizabethtown, 
Shepherdsville, Lawrenceburg, Versailles, Lexington, Bardstown, 
Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville,
Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
200 AM EDT Mon Mar 12 2018 /100 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Heavy snow. Additional snow accumulations of 1 to 3 
  inches are expected.

* WHERE...Portions of central Kentucky

* WHEN...Through daybreak.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

&&

$$

KYZ030-031-033>038-042-043-070>078-081-082-121200-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Jefferson-Oldham-Henry-Shelby-Franklin-Scott-Harrison-Spencer-
Bourbon-Nicholas-Logan-Warren-Simpson-Allen-Barren-Monroe-
Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Louisville, La Grange, New Castle, 
Shelbyville, Frankfort, Georgetown, Cynthiana, Taylorsville, 
Paris, Carlisle, Russellville, Bowling Green, Franklin, 
Providence, Scottsville, Glasgow, Tompkinsville, Edmonton, 
Columbia, Jamestown, Burkesville, and Albany
200 AM EDT Mon Mar 12 2018 /100 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional accumulations of 1 inch expected.

* WHERE...Portions of central Kentucky. 

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving.

&&

$$

zt
107 
WWUS43 KLMK 120714
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
314 AM EDT Mon Mar 12 2018

...Snow Continues Through Early Morning...

.Additional accumulation of 1 to locally 2 inches is possible
across portions of central and east central Kentucky through
daybreak. Roads remain snow covered and slick across portions of 
central Kentucky where hazardous to difficult travel has been 
reported.

KYZ023>029-039>041-045>049-053>057-061>067-121200-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-Anderson-
Woodford-Fayette-Nelson-Washington-Mercer-Jessamine-Clark-Larue-
Marion-Boyle-Garrard-Madison-Butler-Edmonson-Hart-Green-Taylor-
Casey-Lincoln-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
Brandenburg, Hartford, Leitchfield, Elizabethtown, 
Shepherdsville, Lawrenceburg, Versailles, Lexington, Bardstown, 
Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville,
Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
314 AM EDT Mon Mar 12 2018 /214 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional snow accumulations of 1 to locally 2
  inches possible. 

* WHERE...Portions of central Kentucky

* WHEN...Through daybreak.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

&&

$$

KYZ030-031-033>038-042-043-070>078-081-082-121200-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Jefferson-Oldham-Henry-Shelby-Franklin-Scott-Harrison-Spencer-
Bourbon-Nicholas-Logan-Warren-Simpson-Allen-Barren-Monroe-
Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Louisville, La Grange, New Castle, 
Shelbyville, Frankfort, Georgetown, Cynthiana, Taylorsville, 
Paris, Carlisle, Russellville, Bowling Green, Franklin, 
Providence, Scottsville, Glasgow, Tompkinsville, Edmonton, 
Columbia, Jamestown, Burkesville, and Albany
314 AM EDT Mon Mar 12 2018 /214 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional accumulation of around 1 inch expected.

* WHERE...Portions of central Kentucky.

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving.

&&

$$

ZT
442 
WWUS43 KLMK 120720
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
320 AM EDT Mon Mar 12 2018

...Snow Continues Through Early Morning...

.Additional accumulation of 1 to locally 2 inches is possible
across portions of central and east central Kentucky through
daybreak. Roads remain snow covered and slick across portions of
central Kentucky where hazardous to difficult travel has been
reported.

KYZ023>025-120830-
/O.CAN.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Hancock-Breckinridge-Meade-
Including the cities of Lewisport, Hawesville, Hardinsburg, 
and Brandenburg
320 AM EDT Mon Mar 12 2018 /220 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING IS CANCELLED...

Snow has ended but slushy conditions remain possible on some
secondary and untreated roads.

$$

KYZ030-031-033-120830-
/O.CAN.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Jefferson-Oldham-Henry-
Including the cities of Louisville, La Grange, and New Castle
320 AM EDT Mon Mar 12 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended across the area. Some slushy roads may be possible
on secondary and untreated roads. 

$$

KYZ026>029-039>041-045>049-053>057-061>067-121200-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Ohio-Grayson-Hardin-Bullitt-Anderson-Woodford-Fayette-Nelson-
Washington-Mercer-Jessamine-Clark-Larue-Marion-Boyle-Garrard-
Madison-Butler-Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Hartford, Leitchfield, Elizabethtown, 
Shepherdsville, Lawrenceburg, Versailles, Lexington, Bardstown, 
Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville,
Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville, 
Horse Cave, Greensburg, Campbellsville, Liberty, and Stanford
320 AM EDT Mon Mar 12 2018 /220 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional snow accumulations of 1 to locally 2 
  inches possible.

* WHERE...Portions of central Kentucky

* WHEN...Through daybreak.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

&&

$$

KYZ034>038-042-043-070>078-081-082-121200-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Shelby-Franklin-Scott-Harrison-Spencer-Bourbon-Nicholas-Logan-
Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Adair-Russell-
Cumberland-Clinton-
Including the cities of Shelbyville, Frankfort, Georgetown, 
Cynthiana, Taylorsville, Paris, Carlisle, Russellville, 
Bowling Green, Franklin, Providence, Scottsville, Glasgow, 
Tompkinsville, Edmonton, Columbia, Jamestown, Burkesville, 
and Albany
320 AM EDT Mon Mar 12 2018 /220 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional accumulation of around 1 inch expected.

* WHERE...Portions of central Kentucky.

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving.

&&

$$

ZT
838 
WWUS43 KLMK 120844
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
444 AM EDT Mon Mar 12 2018

...Snow Continues Through Early Morning...

.Additional accumulation of 1 to locally 2 inches is possible
across portions of south central and east central Kentucky 
through daybreak. Roads remain snow covered and slick across 
portions of central Kentucky where hazardous to difficult travel 
has been reported.

KYZ026-028-029-120945-
/O.CAN.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Ohio-Hardin-Bullitt-
Including the cities of Hartford, Elizabethtown, 
and Shepherdsville
444 AM EDT Mon Mar 12 2018 /344 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING IS CANCELLED...

Snow has ended though slushy roads remain possible on secondary
and untreated roads.

$$

KYZ034-038-120945-
/O.CAN.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Shelby-Spencer-
Including the cities of Shelbyville and Taylorsville
444 AM EDT Mon Mar 12 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended but slushy roads may be possible on secondary and
untreated roads.

$$

KYZ027-039>041-045>049-053>057-061>067-121200-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Grayson-Anderson-Woodford-Fayette-Nelson-Washington-Mercer-
Jessamine-Clark-Larue-Marion-Boyle-Garrard-Madison-Butler-
Edmonson-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Leitchfield, Lawrenceburg, Versailles, 
Lexington, Bardstown, Springfield, Harrodsburg, Nicholasville, 
Winchester, Hodgenville, Lebanon, Danville, Lancaster, Richmond, 
Morgantown, Brownsville, Horse Cave, Greensburg, Campbellsville, 
Liberty, and Stanford
444 AM EDT Mon Mar 12 2018 /344 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional snow accumulations of 1 to locally 2 
  inches possible.

* WHERE...Portions of central Kentucky

* WHEN...Through daybreak.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

&&

$$

KYZ035>037-042-043-070>078-081-082-121200-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Franklin-Scott-Harrison-Bourbon-Nicholas-Logan-Warren-Simpson-
Allen-Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Frankfort, Georgetown, Cynthiana, Paris, 
Carlisle, Russellville, Bowling Green, Franklin, Providence, 
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, 
Jamestown, Burkesville, and Albany
444 AM EDT Mon Mar 12 2018 /344 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional accumulation of around 1 inch expected.

* WHERE...Portions of central Kentucky.

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving.

&&

$$

ZT
458 
WWUS43 KLMK 121012
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
612 AM EDT Mon Mar 12 2018

...Snow Ending But Difficult Travel Continues...

.Snow is winding down across central and east central Kentucky but
many places are still reporting difficult and hazardous travel due
to slick and snow covered roads. 

KYZ027-045-053-061-062-121115-
/O.CAN.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Grayson-Nelson-Larue-Butler-Edmonson-
Including the cities of Leitchfield, Bardstown, Hodgenville, 
Morgantown, and Brownsville
612 AM EDT Mon Mar 12 2018 /512 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING IS CANCELLED...

Snow has ended but roads may remain slushy through daybreak.

$$

KYZ039>041-046>049-054>057-063>067-121200-
/O.CON.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Anderson-Woodford-Fayette-Washington-Mercer-Jessamine-Clark-
Marion-Boyle-Garrard-Madison-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Lawrenceburg, Versailles, Lexington, 
Springfield, Harrodsburg, Nicholasville, Winchester, Lebanon, 
Danville, Lancaster, Richmond, Horse Cave, Greensburg, 
Campbellsville, Liberty, and Stanford
612 AM EDT Mon Mar 12 2018 /512 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Additional snow accumulations up to 1 inch
  possible.

* WHERE...Portions of central Kentucky

* WHEN...Through daybreak.

* ADDITIONAL DETAILS...Travel will be very difficult to 
  impossible. Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

&&

$$

KYZ035>037-042-043-070>078-081-082-121200-
/O.CON.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Franklin-Scott-Harrison-Bourbon-Nicholas-Logan-Warren-Simpson-
Allen-Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Frankfort, Georgetown, Cynthiana, Paris, 
Carlisle, Russellville, Bowling Green, Franklin, Providence, 
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, 
Jamestown, Burkesville, and Albany
612 AM EDT Mon Mar 12 2018 /512 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT /7 AM
CDT/ THIS MORNING...

* WHAT...Snow. Minor additional snow accumulations possible.

* WHERE...Portions of central Kentucky.

* WHEN...Until 8 AM EDT /7 AM CDT/ Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Be prepared for
slippery roads and limited visibilities, and use caution while
driving.

&&

$$

ZT
006 
WWUS43 KLMK 121207
WSWLMK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Louisville KY
807 AM EDT Mon Mar 12 2018

...WINTER STORM HAS ENDED...


KYZ039>041-046>049-054>057-063>067-121315-
/O.EXP.KLMK.WS.W.0004.000000T0000Z-180312T1200Z/
Anderson-Woodford-Fayette-Washington-Mercer-Jessamine-Clark-
Marion-Boyle-Garrard-Madison-Hart-Green-Taylor-Casey-Lincoln-
Including the cities of Lawrenceburg, Versailles, Lexington, 
Springfield, Harrodsburg, Nicholasville, Winchester, Lebanon, 
Danville, Lancaster, Richmond, Horse Cave, Greensburg, 
Campbellsville, Liberty, and Stanford
807 AM EDT Mon Mar 12 2018 /707 AM CDT Mon Mar 12 2018/

...WINTER STORM WARNING HAS EXPIRED...

Accumulating snowfall has ended over the area. Light snow may
continue over portions of east central Kentucky through mid
morning. Use caution as some roadways remain slick and hazardous.

$$

KYZ035>037-042-043-070>078-081-082-121315-
/O.EXP.KLMK.WW.Y.0010.000000T0000Z-180312T1200Z/
Franklin-Scott-Harrison-Bourbon-Nicholas-Logan-Warren-Simpson-
Allen-Barren-Monroe-Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Frankfort, Georgetown, Cynthiana, Paris, 
Carlisle, Russellville, Bowling Green, Franklin, Providence, 
Scottsville, Glasgow, Tompkinsville, Edmonton, Columbia, 
Jamestown, Burkesville, and Albany
807 AM EDT Mon Mar 12 2018 /707 AM CDT Mon Mar 12 2018/

...WINTER WEATHER ADVISORY HAS EXPIRED...

Accumulating snowfall has ended over the area. Light snow may
continue over portions of east central Kentucky through mid
morning. Use caution as some roadways may be slick and hazardous.

$$

AMS

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 Louisville, KY wrote its last area forecast discussion before this winter storm warning went out at Mar 11, 11:21 AM EDT, 2 hours 12 minutes earlier.

Area forecast discussion, Mar 11, 11:21 AM EDT, 2 hours 12 minutes before
Area Forecast Discussion
National Weather Service Louisville KY
1121 AM EDT Sun Mar 11 2018

.Forecast Update...
Issued at 1110 AM EST Sun Mar 11 2018

Updated the forecast this morning to tweak POPs for today.  Rain
shower activity over western KY should move east into west central
KY/southwest IN late this morning or early afternoon.  Rain looks to
become more widespread across south central KY by mid afternoon with
precipitation overspreading the entire area by this evening.  A
change over from rain to snow should occur late this evening into
the early morning hours.

***Snow Potential for Tonight***

12Z model data starting to come in late this morning is still
indicating good potential for a significant accumulating snowfall
tonight for central KY.  The latest NAM/HRRR/ARW indicate a good
band of potentially 4-6+ inches may fall near or between the KY
parkways.  Still analyzing more data as it comes in but a potential
upgrade to a Winter Storm Warning for portions of central KY is
possible this afternoon.  The northward extent of the Winter Wx
Advisory is under question as well with some of the newest data
indicating 1+ inch snowfall possible as far north as our southern IN
counties along the Ohio River.

Please keep a close eye on the forecast today as it will likely be
changing as we hone in on snowfall amounts and best location for
heavy, banded snowfall tonight.

&&

.Short Term...(Today through Monday)
Issued at 335 AM EDT Sun Mar 11 2018

...Significant Snowfall Accumulations This Evening and Tonight...

An intense late winter storm will bring accumulating snowfall to
parts of central Kentucky later this evening and tonight. The
forecast has significantly changed in the past 24 hours.

Synoptic Overview:

Latest water vapor imagery and 500 mb heights showed a compact
shortwave over southern Nebraska. This system, interacting with a
southern stream system over Texas will result in a strengthening low
pressure system that will move to Tennessee later this evening. As
the two systems begin to phase, strong frontogenesis will occur
northwest of the surface low resulting in a deformation band of
precipitation across portions of Kentucky. Rain will changeover to
wet snow, heavy at times, late this evening. The heaviest snow will
fall overnight before exiting the area Monday morning. Overall, the
10.00z came in reasonable agreement with the major synoptic
features. Differences arose in the heaviest QPF axis and surface
temperatures. A blend of the GFS/GEM/ECMWF were favored for the QPF
location.

Timing:

Rain will spread east across central Kentucky and southwest Indiana
this afternoon, increasing in intensity and coverage by late
afternoon and early evening. As the two systems phase, strong
dynamic cooling in the banded precipitation will allow the air mass
to sufficiently cool for rain to changeover to snow. North/northeast
winds will allow surface temperatures to fall into the low/mid 30s.
The changeover from rain to wet snow is likely to occur between 8p
and 10p with all areas over to all snow between 10p and midnight.

The best forcing and potential for intense snow rates is likely to
be from 11p to 5a between the KY Parkways. This is where 1 inch per
hour rates are possible in the strongest mesoscale banding. Wouldn't
be surprised if a few lightning strikes are observed during this
time too.

The surface low and deformation band snow will begin to move east of
the area between 6a and 8a with a quick west to east end of the
precipitation.

Expected Amounts:

All of the available guidance, from the deterministic and ensemble
members, showed a significant increase in QPF in the 10.00z runs. A
model consensus was used for initialization but increased further in
a narrow gradient where the mesoscale banding is most likely to
occur.

Regarding snow amounts, the forecast will show a swath of 4 to 5
inches across portions of central Kentucky, from near Bowling Green
to Elizabethtown to Richmond. A periphery of 1 to 3 inches lies
tightly around that, including Lexington, Frankfort and extreme
southern Louisville metro suburbs, as well as near the KY/TN border.
Elsewhere across the northern Bluegrass and southern Indiana, little
if any snow is expected.

Pinpointing the inevitable localized higher amounts is tough in
these situations, but the favored areas for 6 (or more) inches would
lie somewhere between the KY Parkways including areas such as
Danville, Campbellsville, and Munfordville.

Confidence:

This is a lower confidence but potential high impact event. While
the model cycle run trend gives confidence in a swath of snow across
the area, the mesoscale band and potential for higher amounts lowers
the confidence. The current forecast lies at or just below the mean
in several of the ensemble members, meaning that there is certainly
potential for higher amounts (some models indicating significantly
higher amounts). In short, there is still uncertainty involved.

Impacts:

Warm ground and rain will initially limit snowfall accumulations but
this should be quickly overcome by the intense but short duration
snowfall. Clumps of wet slushy snow will accumulate on grassy and
elevated surfaces first, then as temperatures cool, secondary and
untreated roads could become snow covered. The heavy snow will
greatly reduce visibility on the roads. If the higher end amounts do
occur, this could put weight on some trees and power lines. Expect
north to northeast wind gusts 20 to 30 mph at times overnight.

While the snow will have mostly ended by the Monday morning commute,
there will still be lingering impacts from the slushy and snow
covered roads. Travelers should plan accordingly.

Headlines:

After coordination with surrounding offices, a Winter Weather
Advisory will be issued for much of central Kentucky. This is a high-
end advisory and will include wording for localized higher amounts
up to 6 inches. Within the advisory, upgrades to a warning are
possible, as later model data hones in on where the higher amounts
are most likely to fall.

.Long Term...(Monday night through Saturday)
Issued at 330 AM EDT Sun Mar 11 2018

In the wake of tonight's system, the upper level pattern for much of
the upcoming work week is expected to feature troughing across the
Great Lakes, Ohio Valley, and mid-Atlantic and ridging through the
intermountain Rockies. In this setup, there will be periodic weather
systems that pivot through the cyclonic flow aloft providing chances
for light precipitation and overall below normal temperatures.

The first of these systems passes through Monday evening. The 10.00z
run of the deterministic models all hint at a wave passing through
IN/OH/KY during the evening hours. Soundings show steepening low to
mid level lapse rates and with some moisture through the DGZ
(usually poorly represented in the large scale models in this setup)
there would be flurries to scattered snow showers across portions of
southern Indiana and central Kentucky, favoring the northern
Bluegrass of Kentucky and southeast Indiana.

The next feature looks to come through Tuesday evening and night.
The dynamics with this one are somewhat stronger and the focus area
for greater lift lies more across the region. Again, with the better
saturation within the DGZ and better lift, there could be measurable
light snowfall to contend with, and this system will need to be
watched.

Temperatures through this period /Monday-Wednesday/ will remain
below normal with highs generally in the 40s (30s on
Tuesday/Wednesday in the Bluegrass) and mornings lows in the 20s.

By later in the week, the trough is forecast to push off the East
Coast and allow a moderation in temperatures. Ridging builds into
the region for Friday and a current model consensus puts highs in
the 50s to even low 60s. Rain chances return by Friday through the
next weekend.

&&

.Aviation...(12Z TAF Issuance)
Issued at 652 AM EDT Sun Mar 11 2018

Precip types and impacts remain a significant challenge in this TAF
set. Expect NE winds to increase through the day as the gradient
tightens around a developing sfc low, with gusts around 20 kt during
the late afternoon and evening. Ceilings steadily drop, with rain
developing mid to late afternoon, then changing over to snow during
the evening. Main impacts will be at BWG and LEX, where fuel-
alternate cig/vis are likely. Heavy snow band will likely produce
IFR conditions but currently expect that to slip in between the two
sites.

SDF and HNB are a lower-confidence forecast, as they remain on the
periphery of the precip shield. Did include TEMPO groups for MVFR
conditions, but fuel-alternate is a real possibility if there is a
northward shift in the storm track.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
IN...None.
KY...Winter Weather Advisory from 8 PM EDT /7 PM CDT/ this evening to
     8 AM EDT /7 AM CDT/ Monday for KYZ023>029-038>042-045>049-
     053>057-061>067-070>078-081-082.

&&

Update...AMS
Short Term...ZT
Long Term...ZT
Aviation...RAS
Hazardous weather outlook, Mar 11, 4:14 AM EDT, 9 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
414 AM EDT Sun Mar 11 2018

KYZ023>029-038>042-045>049-053>057-061>067-070>078-081-082-120815-
Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-Spencer-
Anderson-Woodford-Fayette-Bourbon-Nelson-Washington-Mercer-Jessamine-
Clark-Larue-Marion-Boyle-Garrard-Madison-Butler-Edmonson-Hart-Green-
Taylor-Casey-Lincoln-Logan-Warren-Simpson-Allen-Barren-Monroe-
Metcalfe-Adair-Russell-Cumberland-Clinton-
Including the cities of Lewisport, Hawesville, Hardinsburg,
Brandenburg, Hartford, Leitchfield, Elizabethtown, Shepherdsville,
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Bardstown,
Springfield, Harrodsburg, Nicholasville, Winchester, Hodgenville,
Lebanon, Danville, Lancaster, Richmond, Morgantown, Brownsville,
Horse Cave, Greensburg, Campbellsville, Liberty, Stanford,
Russellville, Bowling Green, Franklin, Providence, Scottsville,
Glasgow, Tompkinsville, Edmonton, Columbia, Jamestown, Burkesville,
and Albany
414 AM EDT Sun Mar 11 2018 /314 AM CDT Sun Mar 11 2018/

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM EDT /7 PM CDT/ THIS
EVENING TO 8 AM EDT /7 AM CDT/ MONDAY...

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Today and Tonight.

Snow will develop across the area this evening, becoming heavy at
times overnight. Through daybreak Monday, 2 to 4 inches are expected
across portions of central Kentucky. Localized higher amounts
possible. See the latest Winter Weather Advisory statement for
details.

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

Hazardous road conditions due to lingering slushy snow will be
possible Monday morning.

Snow showers will be possible Tuesday evening and night.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to report precipitation type and snow amounts this
evening and tonight.

INZ076>079-083-084-089>092-KYZ030>037-043-120815-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Oldham-Trimble-Henry-Shelby-Franklin-Nicholas-
Including the cities of Paoli, Salem, Scottsburg, Madison, Jasper,
English, Tell City, Corydon, New Albany, Jeffersonville, Louisville,
La Grange, Bedford, Milton, New Castle, Shelbyville, Frankfort,
Georgetown, Cynthiana, and Carlisle
414 AM EDT Sun Mar 11 2018 /314 AM CDT Sun Mar 11 2018/

This hazardous weather outlook is for portions of south central
Indiana and Central Kentucky.

.DAY ONE...Today and Tonight.

Rain will changeover to light snow overnight. Accumulations, if at
all, are expected to be under 1/2 inch.

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

Snow showers will be possible Tuesday evening and night.

.SPOTTER INFORMATION STATEMENT...

Spotters are asked to report snowfall totals this evening and
tonight.

ZT

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 11, 3:59 AM EDTWinter Weather AdvisoryLMKAdair, Allen, Anderson, Barren, Bourbon, Boyle and 43 more28 hr

Nearby

Winter Storm Warnings in Kentucky, 2018Winter Storm Warnings in Indiana, 2018Every winter storm warning in 2018

Sources

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