Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Louisville, KY

December 6, 20214 counties in Kentucky

NWS Louisville, KY issued this special weather statement at Dec 6, 2021, 4:48 AM EST for 4 counties in Kentucky. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 6, 2021, 4:48 AM EST (09:48 UTC)
Expired
Dec 6, 2021, 5:30 AM EST
In force
42 min
Issued by
NWS Louisville, KY
Hail
0.00 in
Wind
40

Counties Bourbon County, KY, Clark County, KY, Fayette County, KY, Nicholas County, KY

The radar

The Jackson,KY radar (KJKL), 102 km from the middle of the area, began a volume at 09:49 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.8 hours before the alert went out and 132 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, Cncnati-Daytn, OH at 00:00Z on 2021-12-06Temperature 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, Cncnati-Daytn, OH at 00:00Z on 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 432 square meters per square second.19395878Sfc1 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
934 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
432 m²/s²
0-3 km storm-relative helicity
509 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 6, 3:23 AM EST, 1 hour 25 minutes earlier.

Area forecast discussion, Dec 6, 3:23 AM EST, 1 hour 25 minutes before
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Hazardous weather outlook, Dec 6, 3:52 AM EST, 56 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
352 AM EST Mon Dec 6 2021

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-070900-
Orange-Washington-Scott-Jefferson-Dubois-Crawford-Perry-Harrison-
Floyd-Clark-Hancock-Breckinridge-Meade-Ohio-Grayson-Hardin-Bullitt-
Oldham-Trimble-Henry-Shelby-Franklin-Spencer-Anderson-Woodford-
Fayette-Bourbon-Nicholas-Nelson-Mercer-Jessamine-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 Paoli, Salem, Scottsburg, Madison, Jasper,
English, Tell City, Corydon, New Albany, Jeffersonville, Lewisport,
Hawesville, Hardinsburg, Brandenburg, Hartford, Leitchfield,
Elizabethtown, Shepherdsville, Louisville, La Grange, Bedford,
Milton, New Castle, Shelbyville, Frankfort, Georgetown, Cynthiana,
Taylorsville, Lawrenceburg, Versailles, Lexington, Paris, Carlisle,
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
352 AM EST Mon Dec 6 2021 /252 AM CST Mon Dec 6 2021/

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

.DAY ONE...Today and Tonight.

Isolated instances of gusty winds over 40 mph will be possible
through the early morning hours as widespread showers and storms move
through the area ahead of a cold front. Later today, gusts out of the
northwest will range between 25 and 35 mph.

In addition to the gusty winds, locally heavy rainfall early this
morning could lead to a few instances of nuisance flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is potential for minor snow accumulation late Tuesday night
into Wednesday morning. Confidence remains low in amounts, but
overall impacts are expected to be minimal.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed to report instances of heavy rain or gusty
winds early this morning.

BJS

In the hours before

Special weather statement, Dec 5, 11:06 PM EST, 5 hours 42 minutes before
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Special weather statement, Dec 6, 2:02 AM EST, 2 hours 46 minutes before
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Special weather statement, Dec 6, 3:30 AM EST, 1 hour 18 minutes before
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Special weather statement, Dec 6, 4:18 AM EST, 30 minutes before
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Special weather statement, Dec 6, 4:27 AM EST, 21 minutes before
Special Weather Statement
National Weather Service Louisville KY
427 AM EST Mon Dec 6 2021

KYZ028-045-053-054-063>065-061000-
Hart KY-Marion KY-Taylor KY-Nelson KY-Hardin KY-Larue KY-Green KY-
427 AM EST Mon Dec 6 2021

...Strong thunderstorms will impact portions of south central Nelson,
northwestern Green, Larue, southwestern Marion, northern Hart,
northwestern Taylor and southern Hardin Counties through 500 AM
EST/400 AM CST/...

At 427 AM EST/327 AM CST/, Doppler radar was tracking strong
thunderstorms along a line extending from near Hodgenville to 12
miles west of Munfordville. Movement was northeast at 50 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Strong thunderstorms will be near...
  Hodgenville around 430 AM EST.
  Munfordville around 335 AM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3731 8613 3732 8615 3734 8612 3733 8612
      3733 8610 3734 8611 3735 8610 3735 8608
      3734 8609 3734 8607 3738 8607 3739 8605
      3739 8603 3740 8603 3759 8575 3761 8524
      3727 8569
TIME...MOT...LOC 0927Z 246DEG 52KT 3754 8572 3734 8611

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

JML
Special weather statement, Dec 6, 4:48 AM EST, 0 minutes before
Special Weather Statement
National Weather Service Louisville KY
448 AM EST Mon Dec 6 2021

KYZ036-037-040>043-049-061030-
Bourbon KY-Scott KY-Woodford KY-Fayette KY-Nicholas KY-Clark KY-
Harrison KY-
448 AM EST Mon Dec 6 2021

...Strong thunderstorms will impact portions of east central
Woodford, southeastern Scott, northern Clark, Bourbon, Nicholas,
Fayette and southeastern Harrison Counties through 530 AM EST...

At 447 AM EST, Doppler radar was tracking strong thunderstorms along
a line extending from near Cynthiana to Dunbar High School. Movement
was east at 60 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Strong thunderstorms will be near...
  Carlisle around 500 AM EST.

Other locations in the path of these storms include Winchester.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3830 8385 3812 8408 3796 8399 3794 8448
      3799 8466 3793 8469 3793 8472 3846 8428
      3848 8413 3846 8410 3843 8400 3842 8400
      3844 8397 3836 8392 3836 8389 3835 8390
      3836 8387 3833 8386 3834 8384
TIME...MOT...LOC 0947Z 261DEG 54KT 3841 8426 3800 8460

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

JML

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 5, 7:42 PM ESTSpecial Weather StatementLMKBarren18 min
Dec 5, 7:45 PM ESTSpecial Weather StatementLMKEdmonson15 min
Dec 5, 8:16 PM ESTSpecial Weather StatementLMKHart29 min
Dec 5, 8:57 PM ESTSpecial Weather StatementLMKGreen33 min
Dec 5, 9:30 PM ESTSpecial Weather StatementLMKGreen, Taylor30 min
Dec 5, 10:26 PM ESTSpecial Weather StatementLMKButler, Grayson34 min
Dec 5, 11:06 PM ESTSpecial Weather StatementLMKEdmonson, Grayson, Hart, Larue54 min
Dec 6, 1:04 AM ESTSevere Thunderstorm WarningLMKBoyle, Marion26 min
Dec 6, 1:36 AM ESTSevere Thunderstorm WarningLMKBoyle, Garrard24 min
Dec 6, 2:02 AM ESTSpecial Weather StatementLMKHancock28 min
Dec 6, 3:30 AM ESTSpecial Weather StatementLMKHenry, Shelby30 min
Dec 6, 4:18 AM ESTSpecial Weather StatementLMKFayette, Scott, Woodford27 min
Dec 6, 4:27 AM ESTSpecial Weather StatementLMKHart, Larue33 min
Dec 6, 4:59 AM ESTSpecial Weather StatementLMKMarion31 min
Dec 6, 5:13 AM ESTSpecial Weather StatementLMKJessamine, Mercer32 min
Dec 6, 5:43 AM ESTTornado WarningLMKLogan17 min
Dec 6, 5:47 AM ESTTornado WarningLMKLogan28 min
Dec 6, 6:04 AM ESTSpecial Weather StatementLMKSimpson26 min
Dec 6, 6:15 AM ESTSpecial Weather StatementLMKWarren30 min
Dec 6, 7:21 AM ESTSpecial Weather StatementLMKCumberland24 min
Dec 6, 7:23 AM ESTSpecial Weather StatementLMKClinton37 min
Dec 6, 7:46 AM ESTSpecial Weather StatementLMKClinton14 min
Dec 6, 8:42 AM ESTAreal Flood AdvisoryLMKTaylor3 hr
Dec 6, 10:36 AM ESTAreal Flood AdvisoryLMKBoyle, Garrard, Marion3 hr
Dec 6, 11:54 AM ESTRiver Flood WarningLMKBourbon23 hr
Dec 6, 1:11 PM ESTRiver Flood AdvisoryLMKFranklin32 hr

Nearby

Special Weather Statements in Kentucky, 2021Every special weather statement in 2021

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.