Alert archive / Kentucky / Special Weather Statements in 2012

Special Weather Statement, NWS Louisville, KY

April 4, 2012Oldham County, Kentucky

NWS Louisville, KY issued this special weather statement at Apr 4, 2012, 2:52 PM EDT for Oldham County, Kentucky. It was in force for 23 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: Apr 4, 2012, 2:52 PM EDT (18:52 UTC)
Expired: Apr 4, 2012, 3:15 PM EDT
In force: 23 min
Issued by: NWS Louisville, KY

County Oldham County, KY

The radar

The Louisville radar (KLVX), 71 km from the middle of the area, began a volume at 18:52 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 12:00Z, 6.9 hours before the alert went out and 176 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: 405 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 820 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Apr 4, 1:25 PM EDT, 1 hour 27 minutes earlier.

Area forecast discussion, Apr 4, 1:25 PM EDT, 1 hour 27 minutes before

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Hazardous weather outlook, Apr 4, 4:29 AM EDT, 10 hours 23 minutes before

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In the hours before

Special weather statement, Apr 4, 2:52 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
252 PM EDT WED APR 4 2012

KYZ031-041915-
OLDHAM-
252 PM EDT WED APR 4 2012

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...PENNY
SIZE HAIL...AND 40 MPH WINDS SLOWLY MOVING SOUTHEAST ACROSS OLDHAM
COUNTY...

AT 248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 7 MILES NORTHWEST OF LA GRANGE...OR JUST SOUTH
OF WESTPORT...AND MOVING EAST AT 15 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING...PENNY SIZE HAIL...AND GUSTY
WINDS OF AROUND 35 TO 40 MPH...ARE EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  LA GRANGE...
  RUSSELL CORNER AND BUCKNER...
  CENTERFIELD...
  LIRO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/LOUISVILLE ON THE INTERNET...OR LOCAL MEDIA FOR LATER
UPDATES AND POSSIBLE WARNINGS.

&&

LAT...LON 3850 8533 3849 8531 3846 8535 3844 8533
      3841 8532 3832 8539 3839 8561 3846 8554
      3847 8550 3851 8547 3852 8544
TIME...MOT...LOC 1851Z 288DEG 16KT 3844 8547

JSD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 8:07 PM EDT	Areal Flood Advisory	LMK	Garrard, Madison	71 min
Apr 4, 3:15 PM EDT	Special Weather Statement	LMK	Bourbon	30 min
Apr 4, 4:17 PM EDT	Special Weather Statement	LMK	Shelby	13 min
Apr 4, 5:03 PM EDT	Areal Flood Advisory	LMK	Scott	3 hr
Apr 4, 5:03 PM EDT	Special Weather Statement	LMK	Jessamine	27 min
Apr 4, 5:17 PM EDT	Special Weather Statement	LMK	Anderson	13 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.