Frost Advisory 3, NWS Louisville, KY

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Washington County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Woodford County, KY

700 
WWUS73 KLMK 231202
NPWLMK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOUISVILLE KY
802 AM EDT THU APR 23 2015

...AREAS OF FROST LIKELY LATE TONIGHT...

.AREAS OF FROST AND LOCALIZED FREEZING TEMPERATURES WILL BE POSSIBLE
LATE TONIGHT.

INZ076>079-083-084-089>092-KYZ023>025-028>043-045>049-053>057-
232030-
/O.EXP.KLMK.FR.Y.0002.000000T0000Z-150423T1200Z/
/O.CON.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-HARDIN KY-BULLITT KY-JEFFERSON KY-
OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-SCOTT KY-
HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-FAYETTE KY-
BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-MERCER KY-
JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-GARRARD KY-
MADISON KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
JASPER...MARENGO...TELL CITY...CORYDON...NEW ALBANY...
JEFFERSONVILLE...HAWESVILLE...HARDINSBURG...BRANDENBURG...
ELIZABETHTOWN...FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...
LOUISVILLE...LA GRANGE...BEDFORD...NEW CASTLE...SHELBYVILLE...
FRANKFORT...GEORGETOWN...CYNTHIANA...TAYLORSVILLE...
LAWRENCEBURG...VERSAILLES...LEXINGTON...PARIS...CARLISLE...
BARDSTOWN...SPRINGFIELD...HARRODSBURG...NICHOLASVILLE...
WINCHESTER...HODGENVILLE...LEBANON...DANVILLE...LANCASTER...
RICHMOND
802 AM EDT THU APR 23 2015 /702 AM CDT THU APR 23 2015/

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO
9 AM EDT /8 AM CDT/ FRIDAY...
...FROST ADVISORY HAS EXPIRED...

* TEMPERATURES...TEMPERATURES WILL DROP WELL INTO THE 30S LATE
  TONIGHT. A FEW SPOTS MAY DROP BELOW FREEZING FRIDAY MORNING.

* TIMING...FROST IS EXPECTED TO DEVELOP AND PERSIST BETWEEN 3 AM
  AND 8 AM EDT FRIDAY MORNING.

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

KYZ026-027-062>067-074-076>078-081-082-232030-
/O.CON.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
OHIO KY-GRAYSON KY-EDMONSON KY-HART KY-GREEN KY-TAYLOR KY-
CASEY KY-LINCOLN KY-BARREN KY-METCALFE KY-ADAIR KY-RUSSELL KY-
CUMBERLAND KY-CLINTON KY-
INCLUDING THE CITIES OF...BEAVER DAM...LEITCHFIELD...
BROWNSVILLE...MUNFORDVILLE...GREENSBURG...CAMPBELLSVILLE...
LIBERTY...STANFORD...GLASGOW...EDMONTON...COLUMBIA...JAMESTOWN...
BURKESVILLE...ALBANY
802 AM EDT THU APR 23 2015 /702 AM CDT THU APR 23 2015/

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO
9 AM EDT /8 AM CDT/ FRIDAY...

* TEMPERATURES...TEMPERATURES WILL DROP WELL INTO THE 30S LATE 
  TONIGHT. 

* TIMING...FROST IS EXPECTED TO DEVELOP AND PERSIST BETWEEN THE 
  HOURS OF 3 AM AND 8 AM EDT FRIDAY MORNING. 

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

BJS/AMS

802 
WWUS73 KLMK 231921
NPWLMK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOUISVILLE KY
321 PM EDT THU APR 23 2015

...FREEZE WARNING AND AREAS OF FROST LIKELY LATE TONIGHT...

.A COLD AIRMASS COMBINED WITH IDEAL COOLING OVERNIGHT WILL RESULT
IN MANY LOCATIONS DROPPING BELOW FREEZING TONIGHT AS WELL AS
AREAS OF FROST.

INZ076>079-084-090>092-KYZ025-028>043-045>049-053>057-064>067-077-
078-081-082-240400-
/O.UPG.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
/O.NEW.KLMK.FZ.W.0002.150424T0700Z-150424T1300Z/
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-CRAWFORD IN-
HARRISON IN-FLOYD IN-CLARK IN-MEADE KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-GREEN KY-TAYLOR KY-CASEY KY-LINCOLN KY-
ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
MARENGO...CORYDON...NEW ALBANY...JEFFERSONVILLE...BRANDENBURG...
ELIZABETHTOWN...FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...
LOUISVILLE...LA GRANGE...BEDFORD...NEW CASTLE...SHELBYVILLE...
FRANKFORT...GEORGETOWN...CYNTHIANA...TAYLORSVILLE...
LAWRENCEBURG...VERSAILLES...LEXINGTON...PARIS...CARLISLE...
BARDSTOWN...SPRINGFIELD...HARRODSBURG...NICHOLASVILLE...
WINCHESTER...HODGENVILLE...LEBANON...DANVILLE...LANCASTER...
RICHMOND...GREENSBURG...CAMPBELLSVILLE...LIBERTY...STANFORD...
COLUMBIA...JAMESTOWN...BURKESVILLE...ALBANY
321 PM EDT THU APR 23 2015 /221 PM CDT THU APR 23 2015/

...FREEZE WARNING IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO 9 AM EDT
/8 AM CDT/ FRIDAY...

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO 9 AM EDT
/8 AM CDT/ FRIDAY. THE FROST ADVISORY IS NO LONGER IN EFFECT. 

* TEMPERATURES...UPPER 20S AND LOWER 30S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING AFTER MIDNIGHT
  WITH SUB-FREEZING TEMPERATURES PERSISTING THROUGH AROUND SUNRISE
  FRIDAY MORNING. AREAS OF FROST ARE ALSO EXPECTED.

* IMPACTS...SUB-FREEZING TEMPERATURES AND AREAS OF FROST WILL
  LIKELY KILL SOME CROPS AND SENSITIVE VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. PRECAUTIONS SHOULD BE TAKEN TO PROTECT SENSITIVE
VEGETATION.

&&

$$

KYZ075-240400-
/O.EXA.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
MONROE KY-
INCLUDING THE CITY OF...TOMPKINSVILLE
221 PM CDT THU APR 23 2015

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM CDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM CDT FRIDAY. 

* TEMPERATURES...LOW TO MID 30S.

* TIMING...FROST IS EXPECTED TO DEVELOP AFTER MIDNIGHT AND PERSIST
  THROUGH AROUND SUNRISE FRIDAY MORNING.

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

INZ083-089-KYZ023-024-026-027-062-063-074-076-240400-
/O.CON.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
DUBOIS IN-PERRY IN-HANCOCK KY-BRECKINRIDGE KY-OHIO KY-GRAYSON KY-
EDMONSON KY-HART KY-BARREN KY-METCALFE KY-
INCLUDING THE CITIES OF...JASPER...TELL CITY...HAWESVILLE...
HARDINSBURG...BEAVER DAM...LEITCHFIELD...BROWNSVILLE...
MUNFORDVILLE...GLASGOW...EDMONTON
221 PM CDT THU APR 23 2015

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM CDT
FRIDAY...

* TEMPERATURES...LOW TO MID 30S.

* TIMING...FROST IS EXPECTED TO DEVELOP AFTER MIDNIGHT AND PERSIST
  THROUGH AROUND SUNRISE FRIDAY MORNING.

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

AMS

832 
WWUS73 KLMK 240147
NPWLMK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOUISVILLE KY
947 PM EDT THU APR 23 2015

...FREEZE WARNING AND AREAS OF FROST LIKELY LATE TONIGHT...

.A COLD AIRMASS COMBINED WITH IDEAL COOLING OVERNIGHT WILL RESULT
IN MANY LOCATIONS DROPPING BELOW FREEZING TONIGHT AS WELL AS AREAS
OF FROST.

INZ076>079-084-090>092-KYZ025-028>043-045>049-053>057-064>067-077-
078-081-082-241000-
/O.CON.KLMK.FZ.W.0002.150424T0700Z-150424T1300Z/
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-CRAWFORD IN-
HARRISON IN-FLOYD IN-CLARK IN-MEADE KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-GREEN KY-TAYLOR KY-CASEY KY-LINCOLN KY-
ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
MARENGO...CORYDON...NEW ALBANY...JEFFERSONVILLE...BRANDENBURG...
ELIZABETHTOWN...FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...
LOUISVILLE...LA GRANGE...BEDFORD...NEW CASTLE...SHELBYVILLE...
FRANKFORT...GEORGETOWN...CYNTHIANA...TAYLORSVILLE...
LAWRENCEBURG...VERSAILLES...LEXINGTON...PARIS...CARLISLE...
BARDSTOWN...SPRINGFIELD...HARRODSBURG...NICHOLASVILLE...
WINCHESTER...HODGENVILLE...LEBANON...DANVILLE...LANCASTER...
RICHMOND...GREENSBURG...CAMPBELLSVILLE...LIBERTY...STANFORD...
COLUMBIA...JAMESTOWN...BURKESVILLE...ALBANY
947 PM EDT THU APR 23 2015 /847 PM CDT THU APR 23 2015/

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO
9 AM EDT /8 AM CDT/ FRIDAY...

* TEMPERATURES...UPPER 20S AND LOWER 30S.

* TIMING...TEMPERATURES WILL FALL BELOW FREEZING AFTER MIDNIGHT 
  WITH SUB-FREEZING TEMPERATURES PERSISTING THROUGH AROUND 
  SUNRISE FRIDAY MORNING. AREAS OF FROST ARE ALSO EXPECTED. 

* IMPACTS...SUB-FREEZING TEMPERATURES AND AREAS OF FROST WILL 
  LIKELY KILL SOME CROPS AND SENSITIVE VEGETATION. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. PRECAUTIONS SHOULD BE TAKEN TO PROTECT SENSITIVE
VEGETATION.

&&

$$

INZ083-089-KYZ023-024-026-027-062-063-074>076-241000-
/O.CON.KLMK.FR.Y.0003.150424T0700Z-150424T1300Z/
DUBOIS IN-PERRY IN-HANCOCK KY-BRECKINRIDGE KY-OHIO KY-GRAYSON KY-
EDMONSON KY-HART KY-BARREN KY-MONROE KY-METCALFE KY-
INCLUDING THE CITIES OF...JASPER...TELL CITY...HAWESVILLE...
HARDINSBURG...BEAVER DAM...LEITCHFIELD...BROWNSVILLE...
MUNFORDVILLE...GLASGOW...TOMPKINSVILLE...EDMONTON
847 PM CDT THU APR 23 2015

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM CDT
FRIDAY...

* TEMPERATURES...LOW TO MID 30S.

* TIMING...FROST IS EXPECTED TO DEVELOP AFTER MIDNIGHT AND 
  PERSIST THROUGH AROUND SUNRISE FRIDAY MORNING. 

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

AMS/ZT

407 
WWUS73 KLMK 240857
NPWLMK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOUISVILLE KY
457 AM EDT FRI APR 24 2015

INZ076>079-084-090>092-KYZ025-028>043-045>049-053>057-064>067-077-
078-081-082-241300-
/O.CON.KLMK.FZ.W.0002.000000T0000Z-150424T1300Z/
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-CRAWFORD IN-
HARRISON IN-FLOYD IN-CLARK IN-MEADE KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-GREEN KY-TAYLOR KY-CASEY KY-LINCOLN KY-
ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
MARENGO...CORYDON...NEW ALBANY...JEFFERSONVILLE...BRANDENBURG...
ELIZABETHTOWN...FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...
LOUISVILLE...LA GRANGE...BEDFORD...NEW CASTLE...SHELBYVILLE...
FRANKFORT...GEORGETOWN...CYNTHIANA...TAYLORSVILLE...
LAWRENCEBURG...VERSAILLES...LEXINGTON...PARIS...CARLISLE...
BARDSTOWN...SPRINGFIELD...HARRODSBURG...NICHOLASVILLE...
WINCHESTER...HODGENVILLE...LEBANON...DANVILLE...LANCASTER...
RICHMOND...GREENSBURG...CAMPBELLSVILLE...LIBERTY...STANFORD...
COLUMBIA...JAMESTOWN...BURKESVILLE...ALBANY
457 AM EDT FRI APR 24 2015 /357 AM CDT FRI APR 24 2015/

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT /8 AM CDT/
THIS MORNING...

* TEMPERATURES...UPPER 20S AND LOWER 30S.

* TIMING...TEMPERATURES WILL REMAIN NEAR OR JUST BELOW FREEZING
  UNTIL SHORTLY AFTER SUNRISE...EXCEPT IN URBAN AREAS AND ON HIGH
  GROUND. AREAS OF FROST ARE ALSO EXPECTED...MAINLY IN LOW-LYING
  AND RURAL AREAS.

* IMPACTS...SUB-FREEZING TEMPERATURES AND AREAS OF FROST WILL
  DAMAGE OR POSSIBLY KILL SOME CROPS AND SENSITIVE VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. PRECAUTIONS SHOULD BE TAKEN TO PROTECT SENSITIVE
VEGETATION.

&&

$$

INZ083-089-KYZ023-024-026-027-062-063-074>076-241300-
/O.CON.KLMK.FR.Y.0003.000000T0000Z-150424T1300Z/
DUBOIS IN-PERRY IN-HANCOCK KY-BRECKINRIDGE KY-OHIO KY-GRAYSON KY-
EDMONSON KY-HART KY-BARREN KY-MONROE KY-METCALFE KY-
INCLUDING THE CITIES OF...JASPER...TELL CITY...HAWESVILLE...
HARDINSBURG...BEAVER DAM...LEITCHFIELD...BROWNSVILLE...
MUNFORDVILLE...GLASGOW...TOMPKINSVILLE...EDMONTON
357 AM CDT FRI APR 24 2015

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* TEMPERATURES...MID 30S.

* IMPACTS...THE DEVELOPMENT OF FROST AND COLD TEMPERATURES MAY 
  IMPACT BUSINESSES THAT HAVE SENSITIVE VEGETATION AND OUTDOOR 
  FLOWER STANDS AND GARDENS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

RAS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
108 AM EDT Thu Apr 23 2015

...Updated Aviation Discussion...

...Forecast Update...
Updated 925 PM EDT Wed Apr 22 2015

Current forecast remains on track this evening.  NWS observations
and KY Mesonet observations show temperatures in the Bluegrass
dropping into the mid-upper 40s with mainly lower 50s across
southern KY.  Surface winds continue to subside and should continue
to decrease in intensity overnight...becoming light out of the west.

Latest guidance still suggests that temperatures overnight will drop
into the lower-middle 30s across southern Indiana and central
Kentucky.  Patchy frost will be possible in many of the low-lying
and valley areas.  The best chances of widespread frost look to be
across southern Indiana and portions of north-central/east-central
KY where a Frost Advisory is in effect for late tonight.  Still
expect frost to be most prevalent from about 3-4AM through 7-8AM EDT.

Updated 635 PM EDT Wed Apr 22 2015

After coordinating with WFO PAH, ILN, and JKL, we have updated the
forecast to include a Frost Advisory for all of southern Indiana and
portions of central Kentucky tonight.  Latest guidance suggests that
overnight temps will drop into the low-mid 30s across southern
Indiana and portions of central KY.  This combined with clear skies
and some left over moisture will result in frost developing late
tonight.  The best chances of frost will be in the low-lying and
valley locations of southern IN and portions of central KY.  The
highest threat of frost looks to be in areas along and north of the
I-64 corridor with more patchy frost down toward the WK/BG Parkway
corridor.  Some patchy frost will also be possible across southern
KY...especially in the valley locations.  Persons or operations that
have sensitive vegetation out should take frost precautions tonight.

.SHORT TERM (Now through Thursday Night)...
Issued at 246 PM EDT Wed Apr 22 2015

...Potential for Frost Tonight and Frost/Freeze Tomorrow Night...

High pressure moving from northern Missouri to eastern Kentucky
during the short term will keep our weather very quiet.
Temperatures and the possibility of frost are the main concerns.

By 12Z Thursday the high will be centered just off to our west.  As
a result, we'll still have a bit of a gradient overnight, preventing
winds from going calm.  Also, dew point depressions during the
climatologically most likely frost-producing hours will be in the 3
to 5 degree range.  Given this, and after a great deal of
collaboration with surrounding offices, have decided to stick with
patchy frost in most locations tonight.  The usual sheltered spots
may slip briefly below freezing and experience areas of frost.  Will
hold off on an advisory for now, but will mention frost in the HWO
and an SPS.  General low temps will be in the middle 30s (with the
exception of the usual cold spots).

Thursday will be cool but still a nice day with a plenty of sunshine
(maybe some clouds in southern Kentucky) and high temperatures in
the middle 50s to around 60.  There will be a WNW breeze but it
won't be as strong as today and yesterday.

Thursday night the high will move overhead.  The center of the high
will already be to our east by 06Z.  By 12Z we'll have a bit of a
surface gradient and the high center will be in the Appalachians.
So, we expect the coldest temperatures to be in the Blue Grass and
Lake Cumberland areas, where freezing temperatures are within the
realm of possibility.  Frost will also be possible, but, again, the
near-surface air will be quite dry so will just go with "patchy"
frost most areas for now.  Chatted with neighbors about the
possibility of a Freeze Watch for the east, but decided the
confidence level wasn't high enough in central Kentucky to go with
one.  Will highlight instead in an SPS.

Dew points have fallen into the 20s the past couple of days in some
locations, especially across northern Kentucky and southern
Indiana.  Dry air mix-down techniques suggest Td could fall into the
teens Thursday afternoon especially along and north of I-64
resulting in relative humidity values possibly as low as 20%.

Thanks to PAH, IND, ILN, JKL, and OHX for coord.

.LONG TERM (Friday through Wednesday)...
Issued at 250 PM EDT Wed Apr 22 2015

The focus in the long term period is on the shower/thunderstorm
chances Saturday, with the potential for a few stronger storms in
the afternoon across south-central Kentucky.

Friday, the lower Ohio Valley region will be split between a
departing upper trough across the mid-Atlantic as a new shortwave
trough crosses into the central Plains. A brief period of ridging
will set up for the day locally and at the surface, high pressure
will be moving off to the east. After a chilly start, readings will
rebound to the low/mid 60s by afternoon under a mix of sun and
clouds. Overall, another seasonably cool day for the area.

Southerly return ahead of the next upper shortwave trough will bring
increasing moisture from the Gulf late Friday evening. Warm
advection/isentropic lift picks up after 00z to our west and by 06z
Saturday is likely to have spread into the western/southwestern
portions of the forecast area at which rain showers will be
possible. Early Saturday morning the nose of the 850 mb moisture
transport is positioned to our south but there should be sufficient
lift/forcing for showers and potentially some elevated thunderstorms
across the area as pieces of upper level energy move west to east
across Kentucky.

That wave of showers/storms would move off to the south/east during
the morning hours, then potentially setting up for additional
showers/thunderstorms during the afternoon for portions of the area.
There remains some model differences in where the surface low
pressure sets up and how much of the forecast area is pushed into
the warm sector Saturday afternoon. A trend in the models is for the
low to be a bit further north, which could bring a larger portion of
south central KY into the warm sector.

Models are showing moderate amounts of instability to develop during
the afternoon hours across TN into portions of south-central KY,
with SBCAPE values of 1500 to 2000 J/kg. Meanwhile, a BWG sounding
for Saturday afternoon shows very impressive low/mid level lapse
rates, upwards of 8.5 to 9C/km. This results in a fat CAPE profile,
with a large percentage in the hail growth zone. Hodographs were
also impressive, showing 0-6km bulk shear of 40-50 kts. Overall,
soundings would support a hail/wind threat if storms materialize.

SPC Day 4 outlook /Saturday/ alluded to the potential for strong to
severe storms on the tongue of instability across the TN and lower
OH river valleys. Still many questions remain about the placement of
the synoptic features, but something to watch closely if the trend
is for more of the area to be in the warm sector Saturday afternoon.

There is likely to be a decent temperature gradient across the area
as well, ranging from the upper 50s in the north to the low/mid 70s
closer to the TN border. In between, tricky high temperature
forecast but will go with generally mid/upper 60s at this point.

Sunday is trending toward a cooler but drier day as the area is
under northwest flow and surface high pressure builds in from the
northwest. Expect a mix of sun/clouds, potentially breezy north
winds and seasonably cool temperatures in the 60s.

Going into next week, models are struggling with a split flow
pattern with the 22.12z guidance showing a closed 500 mb low forming
across the southern states. The timing/placement of these features
leaves a lot to be desired at this point so for now will side with a
model consensus. Plan on seasonably cool temperatures to continue
with highs in the mid/upper 60s and lows in the 40s. While it
doesn't appear to be a washout each day, showers will be possible
Monday through Wednesday with the higher /30 percent/ chances
confined to southern Kentucky.

&&

.AVIATION (06Z TAF Update)...
Updated at 107 AM EDT Thu Apr 23 2015

High pressure will continue to build into the region through today
resulting in VFR conditions. Only real concern will be stronger NW
winds later in the morning through the afternoon between 10 and 20
mph gusting up to around 25 mph at times. BWG will be the only TAF
site to see some Sct clouds around 10 K feet.

Forecaster Confidence
=====================
Ceilings  : High
Visibility: High
Winds     : High
=====================

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...FROST ADVISORY until 8 AM EDT /7 AM CDT/ this morning FOR
     KYZ023>025-028>043-045>049-053>057.

IN...FROST ADVISORY until 8 AM EDT /7 AM CDT/ this morning FOR
     INZ076>079-083-084-089>092.

&&

Update.........MJ
Short Term.....13
Long Term......ZT
Aviation.......BJS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
640 PM EDT WED APR 22 2015

INZ076>079-083-084-089>092-KYZ023>025-028>043-045>049-053>057-232245-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-CRAWFORD IN-
PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-BRECKINRIDGE KY-
MEADE KY-HARDIN KY-BULLITT KY-JEFFERSON KY-OLDHAM KY-TRIMBLE KY-
HENRY KY-SHELBY KY-FRANKLIN KY-SCOTT KY-HARRISON KY-SPENCER KY-
ANDERSON KY-WOODFORD KY-FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-
WASHINGTON KY-MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-
BOYLE KY-GARRARD KY-MADISON KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
JASPER...MARENGO...TELL CITY...CORYDON...NEW ALBANY...
JEFFERSONVILLE...HAWESVILLE...HARDINSBURG...BRANDENBURG...
ELIZABETHTOWN...FORT KNOX...MOUNT WASHINGTON...SHEPHERDSVILLE...
LOUISVILLE...LA GRANGE...BEDFORD...NEW CASTLE...SHELBYVILLE...
FRANKFORT...GEORGETOWN...CYNTHIANA...TAYLORSVILLE...LAWRENCEBURG...
VERSAILLES...LEXINGTON...PARIS...CARLISLE...BARDSTOWN...
SPRINGFIELD...HARRODSBURG...NICHOLASVILLE...WINCHESTER...
HODGENVILLE...LEBANON...DANVILLE...LANCASTER...RICHMOND
640 PM EDT WED APR 22 2015 /540 PM CDT WED APR 22 2015/

...FROST ADVISORY IN EFFECT FROM 3 AM EDT /2 AM CDT/ TO 8 AM EDT
/7 AM CDT/ THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL INDIANA AND
PORTIONS OF CENTRAL KENTUCKY.

.DAY ONE...TONIGHT.

PATCHY FROST IS EXPECTED LATE TONIGHT ACROSS SOUTHERN INDIANA AND
PORTIONS OF CENTRAL KENTUCKY. A FROST ADVISORY IS IN EFFECT FOR
LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SOME LOCATIONS IN THE BLUE GRASS AND LAKE CUMBERLAND AREAS MAY DIP
SLIGHTLY BELOW FREEZING FRIDAY MORNING.

A STORM SYSTEM WILL MOVE ACROSS THE REGION LATE FRIDAY NIGHT INTO
SATURDAY...BRINGING A CHANCE OF THUNDERSTORMS. ANY STORM COULD
PRODUCE CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH AT LEAST FRIDAY.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT WEATHER.GOV/LOUISVILLE.

KYZ026-027-061>067-070>078-081-082-232245-
OHIO KY-GRAYSON KY-BUTLER KY-EDMONSON KY-HART KY-GREEN KY-TAYLOR KY-
CASEY KY-LINCOLN KY-LOGAN KY-WARREN KY-SIMPSON KY-ALLEN KY-BARREN KY-
MONROE KY-METCALFE KY-ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY-
INCLUDING THE CITIES OF...BEAVER DAM...LEITCHFIELD...MORGANTOWN...
BROWNSVILLE...MUNFORDVILLE...GREENSBURG...CAMPBELLSVILLE...LIBERTY...
STANFORD...RUSSELLVILLE...BOWLING GREEN...FRANKLIN...SCOTTSVILLE...
GLASGOW...TOMPKINSVILLE...EDMONTON...COLUMBIA...JAMESTOWN...
BURKESVILLE...ALBANY
640 PM EDT WED APR 22 2015 /540 PM CDT WED APR 22 2015/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SOME LOCATIONS IN THE BLUE GRASS AND LAKE CUMBERLAND AREAS MAY DIP
SLIGHTLY BELOW FREEZING FRIDAY MORNING.

A STORM SYSTEM WILL MOVE ACROSS THE REGION LATE FRIDAY NIGHT INTO
SATURDAY...BRINGING A CHANCE OF THUNDERSTORMS. ANY STORM COULD
PRODUCE CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH AT LEAST FRIDAY.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT WEATHER.GOV/LOUISVILLE.

13/MJ/ZBT