Alert archive / Kentucky / Wind Chill Advisories in 2015

Wind Chill Advisory 3, NWS Louisville, KY

February 18, 201549 counties in Kentucky; 10 counties in Indiana

NWS Louisville, KY issued this wind chill advisory at Feb 18, 2015, 2:59 AM CST for 49 counties in Kentucky; 10 counties in Indiana. It took effect at Feb 19, 2015, 9:00 AM CST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Feb 18, 2015, 2:59 AM CST (08:59 UTC)
In effect from
Feb 19, 2015, 9:00 AM CST
Expired
Feb 20, 2015, 9:00 AM CST
In force
24 hr
Issued by
NWS Louisville, KY
All 59 counties

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, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler 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, Logan 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, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY

The radar

The Louisville radar (KLVX), 43 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.0 hours before the alert went out and 205 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 00:00Z on 2015-02-18Temperature 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 00:00Z on 2015-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -110 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
908 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
-110 m²/s²
0-3 km storm-relative helicity
-64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Feb 18, 2:31 AM CST, 28 minutes earlier.

Area forecast discussion, Feb 18, 2:31 AM CST, 28 minutes before
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Hazardous weather outlook, Feb 18, 2:51 AM CST, 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
351 AM EST WED FEB 18 2015

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-190900-
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-OHIO KY-GRAYSON 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-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...PAOLI...SALEM...SCOTTSBURG...MADISON...
JASPER...MARENGO...TELL CITY...CORYDON...NEW ALBANY...
JEFFERSONVILLE...HAWESVILLE...HARDINSBURG...BRANDENBURG...
BEAVER DAM...LEITCHFIELD...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...MORGANTOWN...BROWNSVILLE...MUNFORDVILLE...
GREENSBURG...CAMPBELLSVILLE...LIBERTY...STANFORD...RUSSELLVILLE...
BOWLING GREEN...FRANKLIN...SCOTTSVILLE...GLASGOW...TOMPKINSVILLE...
EDMONTON...COLUMBIA...JAMESTOWN...BURKESVILLE...ALBANY
351 AM EST WED FEB 18 2015 /251 AM CST WED FEB 18 2015/

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM EST /6 PM CST/ THIS
EVENING...

...WIND CHILL ADVISORY IN EFFECT FROM 4 PM EST TODAY UNTIL 7 PM EST THURSDAY...

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

.DAY ONE...TODAY AND TONIGHT.

LIGHT SNOW THIS MORNING AND SCATTERED SNOW SHOWERS THIS AFTERNOON
WILL DROP 1 TO LOCALLY 2 INCHES OF SNOW. WEST WINDS OF 10 TO 20
MPH GUSTING TO 20 TO 30 MPH WILL MAKE IT DANGEROUS TO BE OUTSIDE
FOR AN EXTENDED PERIOD OF TIME THIS AFTERNOON. BY LATE AFTERNOON
WIND CHILLS WILL FALL TO AROUND 10 BELOW ZERO.

INTENSE COLD TONIGHT COMBINED WITH WEST WINDS AROUND 10 MPH WILL
RESULT IN WIND CHILLS OF AT LEAST 15 TO 25 DEGREES BELOW ZERO.

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

ARCTIC HIGH PRESSURE WILL BRING BITTERLY COLD TEMPERATURES AND
WIND CHILLS TO THE REGION THURSDAY THROUGH FRIDAY. LOW
TEMPERATURES FRIDAY MORNING WILL BE IN THE -5 TO -15 RANGE WITH
WIND CHILLS -5 TO -25. THESE TEMPERATURES AND WIND CHILLS POSE A
REAL DANGER TO ANYONE WHO IS OUTSIDE FOR PROLONGED PERIODS OF
TIME!

A STORM SYSTEM COULD BRING A WINTRY MIX TO THE AREA BEGINNING
FRIDAY AFTERNOON. PRECIPITATION MAY START OFF AS SNOW FRIDAY
AFTERNOON/EVENING...THEN BECOME A WINTRY MIX FRIDAY NIGHT...AND
A WINTRY MIX TO RAIN SATURDAY INTO SATURDAY NIGHT.

SOME SNOW AND ICE ACCUMULATIONS ARE POSSIBLE ACROSS THE ENTIRE
AREA WITH THIS SYSTEM. PLEASE STAY UP TO DATE TO THE FORECAST
UPDATES CONCERNING THIS STORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO REPORT SNOWFALL TOTALS TODAY.

13/ZBT

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 18, 7:57 AM CSTSpecial Weather StatementLMKJefferson, Shelby, Spencer58 min
Feb 18, 8:02 AM CSTSpecial Weather StatementLMKGreen, Hart, Larue, Marion, Nelson, Taylor and 1 more58 min
Feb 18, 8:33 AM CSTSpecial Weather StatementLMKAnderson, Fayette, Franklin, Jessamine, Spencer, Woodford87 min
Feb 18, 9:04 AM CSTSpecial Weather StatementLMKAdair, Boyle, Casey, Garrard, Lincoln, Mercer and 1 more56 min
Feb 18, 1:00 PM CSTWind Chill WarningLMKAdair, Allen, Anderson, Barren, Bourbon, Boyle and 43 more20 hr

Nearby

Wind Chill Advisories in Kentucky, 2015Wind Chill Advisories in Indiana, 2015Every wind chill advisory in 2015

Sources

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