Alert archive / Indiana / Special Weather Statements in 2011

Special Weather Statement, NWS Louisville, KY

October 18, 2011Clark County, Jefferson County, Scott County, Indiana

NWS Louisville, KY issued this special weather statement at Oct 18, 2011, 11:43 AM EDT for Clark County, Jefferson County, Scott County, Indiana. It was in force for 47 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: Oct 18, 2011, 11:43 AM EDT (15:43 UTC)
Expired: Oct 18, 2011, 12:30 PM EDT
In force: 47 min
Issued by: NWS Louisville, KY

Counties Clark County, IN, Jefferson County, IN, Scott County, IN

The radar

The Louisville radar (KLVX), 92 km from the middle of the area, began a volume at 15:45 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, 3.7 hours before the alert went out and 172 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1936 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Oct 18, 11:39 AM EDT, 4 minutes earlier.

Area forecast discussion, Oct 18, 11:39 AM EDT, 4 minutes before

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Hazardous weather outlook, Oct 18, 9:45 AM EDT, 1 hour 58 minutes before

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In the hours before

Special weather statement, Oct 18, 11:43 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
1143 AM EDT TUE OCT 18 2011

INZ078-079-092-181630-
CLARK-JEFFERSON-SCOTT-
1143 AM EDT TUE OCT 18 2011

...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND
NICKEL SIZE HAIL...

AT 1140 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 10 MILES SOUTH OF SCOTTSBURG...AND MOVING
NORTHEAST AT 50 MPH.

OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL RATES OF AROUND ONE
INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...AND
NICKEL SIZE HAIL...ARE EXPECTED WITH THIS STORM.

* THIS STORM WILL ALSO IMPACT...
  SCOTTSBURG...
  GOSHEN AND NABB...
  LEXINGTON AND BLOCHER...
  SWANVILLE AND DEPUTY...
  VOLGA AND WAKEFIELD...

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 3886 8527 3873 8541 3873 8544 3870 8545
      3844 8574 3852 8587 3858 8585 3858 8588
      3860 8588 3883 8566 3883 8562 3885 8562
      3886 8558 3888 8558 3889 8554 3892 8554
      3892 8536
TIME...MOT...LOC 1544Z 220DEG 43KT 3858 8575

MJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 18, 4:05 PM EDT	Severe Thunderstorm Warning	LMK	Allen, Barren	25 min
Oct 18, 4:08 PM EDT	Special Weather Statement	LMK	Green, Metcalfe	37 min
Oct 18, 4:21 PM EDT	Severe Thunderstorm Warning	LMK	Barren, Metcalfe	24 min
Oct 18, 4:25 PM EDT	Special Weather Statement	LMK	Washington	35 min
Oct 18, 4:44 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Green, Marion, Metcalfe, Taylor	31 min
Oct 18, 4:56 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Cumberland, Green, Metcalfe	34 min
Oct 18, 4:59 PM EDT	Special Weather Statement	LMK	Anderson, Boyle, Marion, Mercer, Washington	31 min
Oct 18, 5:04 PM EDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	26 min
Oct 18, 5:15 PM EDT	Severe Thunderstorm Warning	LMK	Boyle, Casey, Marion, Taylor	30 min
Oct 18, 5:29 PM EDT	Special Weather Statement	LMK	Anderson, Boyle, Franklin, Marion, Mercer, Nelson and 4 more	31 min
Oct 18, 5:30 PM EDT	Severe Thunderstorm Warning	LMK	Metcalfe, Monroe	30 min
Oct 18, 5:32 PM EDT	Special Weather Statement	LMK	Adair	28 min
Oct 18, 5:48 PM EDT	Severe Thunderstorm Warning	LMK	Fayette, Scott, Woodford	27 min
Oct 18, 5:49 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Casey, Marion, Taylor	26 min
Oct 18, 6:00 PM EDT	Special Weather Statement	LMK	Adair	15 min
Oct 18, 6:04 PM EDT	Special Weather Statement	LMK	Boyle, Clark, Fayette, Garrard, Jessamine, Lincoln and 2 more	26 min
Oct 18, 6:08 PM EDT	Severe Thunderstorm Warning	LMK	Adair, Russell	37 min
Oct 18, 6:19 PM EDT	Special Weather Statement	LMK	Harrison, Nicholas, Scott	41 min
Oct 18, 6:33 PM EDT	Special Weather Statement	LMK	Boyle	27 min
Oct 18, 6:38 PM EDT	Special Weather Statement	LMK	Casey	22 min
Oct 18, 6:39 PM EDT	Severe Thunderstorm Warning	LMK	Madison	36 min
Oct 18, 7:18 PM EDT	Severe Thunderstorm Warning	LMK	Clark	12 min
Oct 18, 7:40 PM EDT	Special Weather Statement	LMK	Madison	35 min
Oct 18, 7:58 PM EDT	Special Weather Statement	LMK	Madison	32 min

Nearby

Special Weather Statements in Indiana, 2011 Every special weather statement in 2011

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.