Alert archive / Kentucky / Special Weather Statements in 2012

Special Weather Statement, NWS Louisville, KY

December 9, 20126 counties in Kentucky

NWS Louisville, KY issued this special weather statement at Dec 9, 2012, 10:14 PM EST for 6 counties in Kentucky. It was in force for 41 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 9, 2012, 10:14 PM EST (03:14 UTC)
Expired: Dec 9, 2012, 10:55 PM EST
In force: 41 min
Issued by: NWS Louisville, KY

Counties Bullitt County, KY, Hardin County, KY, Henry County, KY, Nelson County, KY, Shelby County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 64 km from the middle of the area, began a volume at 03:15 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, 3.2 hours before the alert went out and 260 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 69 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 331 m²/s²
0-3 km storm-relative helicity: 382 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 9, 9:56 PM EST, 18 minutes earlier.

Area forecast discussion, Dec 9, 9:56 PM EST, 18 minutes before

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Hazardous weather outlook, Dec 9, 3:49 PM EST, 6 hours 25 minutes before

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In the hours before

Special weather statement, Dec 9, 7:00 PM EST, 3 hours 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
700 PM EST SUN DEC 9 2012

INZ076>079-083-084-089>092-KYZ032-100200-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-TRIMBLE KY-
INCLUDING THE CITIES OF...PAOLI...SALEM...SCOTTSBURG...MADISON...
JASPER...MARENGO...TELL CITY...CORYDON...NEW ALBANY...
JEFFERSONVILLE...BEDFORD
700 PM EST SUN DEC 9 2012 /600 PM CST SUN DEC 9 2012/

...HEAVY RAIN OVER SOUTH-CENTRAL INDIANA COULD CAUSE LOCAL FLOODING...

AN AXIS OF SHOWERS AND THUNDERSTORMS MOVING NORTHEAST OVER MUCH OF
SOUTH-CENTRAL INDIANA WAS CAUSING MODERATE TO HEAVY RAIN EARLY
THIS EVENING. INDIVIDUAL CELLS WITHIN THIS AXIS WERE MOVING OVER THE
SAME LOCATIONS MEANING PROLONGED HEAVY RAINFALL IN SOME AREAS...
ESPECIALLY OVER PARTS OF DUBOIS...ORANGE...WASHINGTON...AND SCOTT
COUNTIES. ADDITIONAL HEAVY RAIN WILL PASS OVER PERRY...CRAWFORD...
HARRISION...FLOYD...CLARK...AND JEFFERSON COUNTIES IN SOUTHERN
INDIANA AT TIMES BETWEEN 7 AND 9 PM EST.

ADDITIONAL SHOWERS AND THUNDERSTORMS WILL MOVE INTO SOUTH-CENTRAL
INDIANA LATER THIS EVENING AS A COLD FRONT APPROACHES. RAINFALL
AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED THIS EVENING.

THIS RAINFALL COULD CAUSE LOCAL TEMPORARY FLOODING OF SOME LOW-
LYING AREAS...UNDERPASSES...AND NEAR CREEKS AND STREAMS. EXPECT
PONDING OF WATER ON MANY ROADS. USE EXTRA CAUTION IF DRIVING!

TWF

Special weather statement, Dec 9, 9:26 PM EST, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
926 PM EST SUN DEC 9 2012

INZ090>092-KYZ024>031-033-034-100320-
BRECKINRIDGE KY-BULLITT KY-CLARK IN-FLOYD IN-GRAYSON KY-HARDIN
KY-HARRISON IN-HENRY KY-JEFFERSON KY-MEADE KY-OHIO KY-OLDHAM
KY-SHELBY KY-
926 PM EST SUN DEC 9 2012

...THUNDERSTORMS WITH CLOUD-TO-GROUND LIGHTNING...HEAVY RAIN...AND
GUSTY WINDS...

AT 917 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A LINE OF THUNDERSTORMS FROM NEW ALBANY TO 8 MILES SOUTHEAST OF
WHITESVILLE...AND MOVING EAST AT 30 TO 40 MPH.

CLOUD-TO-GROUND LIGHTNING...HEAVY RAIN REDUCING VISIBILITIES...AND
GUSTY WINDS AROUND 30 MPH...ARE EXPECTED WITH THESE STORMS.

* THESE STORMS WILL ALSO IMPACT...
  VALLEY STATION...
  LOUISVILLE...
  ST. MATTHEWS...
  SHIVELY...
  FORT KNOX...
  WATSON AND CEMENTVILLE...
  RIVER RIDGE AND BELKNAP BEACH...
  RIVER BLUFF AND GOSHEN...
  BROWNSBORO AND SKYLIGHT...
  LAGRANGE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER INDOORS. STAY
TUNED TO NOAA ALL HAZARDS RADIO...WEATHER.GOV/LOUISVILLE ON THE
INTERNET...OR LOCAL MEDIA FOR LATER UPDATES.

&&

LAT...LON 3768 8668 3766 8662 3771 8665 3845 8576
      3845 8511 3757 8608 3757 8682
TIME...MOT...LOC 0221Z 267DEG 36KT 3833 8583 3759 8673

TWF

Special weather statement, Dec 9, 10:14 PM EST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1014 PM EST SUN DEC 9 2012

KYZ025-028>031-033>035-038-045-053-100355-
BULLITT KY-FRANKLIN KY-HARDIN KY-HENRY KY-JEFFERSON KY-LARUE KY-MEADE
KY-NELSON KY-OLDHAM KY-SHELBY KY-SPENCER KY-
1014 PM EST SUN DEC 9 2012

...STRONG THUNDERSTORMS WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
45 MPH WINDS CROSSING CENTRAL KENTUCKY......

AT 909 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES EAST OF NEW
CASTLE TO LOUISVILLE TO 11 MILES WEST OF ELIZABETHTOWN TO 8 MILES
NORTH OF LEITCHFIELD...MOVING EAST AT 35 MPH.

OCCASIONAL LIGHTNING...HEAVY RAIN...AND GUSTY WINDS TO 45 MPH ARE
EXPECTED WITH THESE STORMS.

* THESE STORMS WILL ALSO IMPACT...
  NEW CASTLE...
  TAYLORSVILLE...
  SHEPHERDSVILLE...
  BARDSTOWN...
  SHELBYVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STRONG WINDS WITH THESE STORMS CAN TOPPLE WEAKLY ROOTED TREES AND
DOWN POWER LINES. TAKE PRECAUTIONS NOW TO SECURE TRASH CANS...LAWN
FURNITURE AND OTHER LOOSE OUTDOOR OBJECTS. MOTORISTS IN HIGH PROFILE
VEHICLES SHOULD USE CAUTION.

&&

LAT...LON 3851 8502 3852 8499 3849 8498 3846 8494
      3847 8492 3846 8490 3844 8492 3842 8488
      3838 8488 3835 8477 3809 8514 3772 8551
      3758 8585 3759 8628 3766 8624 3772 8616
      3811 8577 3854 8502
TIME...MOT...LOC 0312Z 268DEG 31KT 3848 8498 3812 8564
          3772 8603 3759 8630

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 9, 8:05 PM EST	Areal Flood Advisory	LMK	Trimble	3 hr
Dec 9, 9:26 PM EST	Special Weather Statement	LMK	Breckinridge, Bullitt, Hardin, Jefferson, Meade, Oldham	54 min
Dec 9, 10:54 PM EST	Special Weather Statement	LMK	Anderson, Franklin, Scott, Spencer	46 min
Dec 9, 11:53 PM EST	River Flood Advisory	LMK	Bourbon	32 hr
Dec 10, 12:43 AM EST	Special Weather Statement	LMK	Green, Taylor	32 min
Dec 10, 1:03 AM EST	Special Weather Statement	LMK	Adair, Metcalfe, Monroe	27 min

Nearby

Special Weather Statements in Kentucky, 2012 Every special weather statement in 2012

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.