Alert archive / Indiana / Special Weather Statements in 2020

Special Weather Statement, NWS Louisville, KY

July 20, 2020Dubois County, Indiana

NWS Louisville, KY issued this special weather statement at Jul 20, 2020, 12:30 PM EDT for Dubois County, Indiana. It was in force for 45 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
Jul 20, 2020, 12:30 PM EDT (16:30 UTC)
Expired
Jul 20, 2020, 1:15 PM EDT
In force
45 min
Issued by
NWS Louisville, KY

County Dubois County, IN

The radar

The Evansville,IN radar (KVWX), 65 km from the middle of the area, began a volume at 16:31 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 12:00Z, 4.5 hours before the alert went out and 243 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 12:00Z on 2020-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1474 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2020-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
1474 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1142 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
49 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 Jul 20, 11:24 AM EDT, 1 hour 6 minutes earlier.

Area forecast discussion, Jul 20, 11:24 AM EDT, 1 hour 6 minutes before
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Hazardous weather outlook, Jul 20, 11:33 AM EDT, 57 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
1133 AM EDT Mon Jul 20 2020

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-211545-
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
1133 AM EDT Mon Jul 20 2020 /1033 AM CDT Mon Jul 20 2020/

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

.DAY ONE...This Afternoon and Tonight.

Scattered thunderstorms are expected today, and some may become
strong to severe. Stronger storms will be capable of producing gusty
winds, frequent lightning, and torrential heavy rainfall. Slow
moving storms could create localized flash flooding threat.

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

Scattered thunderstorms will be possible each afternoon and evening.
The main threats with these storms will be locally heavy rainfall,
gusty winds, and lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected.

BTN/EBW/JML

In the hours before

Special weather statement, Jul 20, 12:30 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 1:31 PM EDTSpecial Weather StatementLMKBreckinridge, Nelson44 min
Jul 20, 1:39 PM EDTSpecial Weather StatementLMKNicholas51 min
Jul 20, 1:52 PM EDTSpecial Weather StatementLMKHancock38 min
Jul 20, 2:14 PM EDTSevere Thunderstorm WarningLMKMeade31 min
Jul 20, 2:19 PM EDTSpecial Weather StatementLMKNelson, Washington26 min
Jul 20, 2:24 PM EDTAreal Flood AdvisoryLMKBullitt, Hardin, Nelson2 hr
Jul 20, 2:35 PM EDTSpecial Weather StatementLMKBourbon25 min
Jul 20, 2:42 PM EDTSevere Thunderstorm WarningLMKAnderson, Nelson, Washington33 min
Jul 20, 2:55 PM EDTSpecial Weather StatementLMKBreckinridge, Meade, Ohio35 min
Jul 20, 3:01 PM EDTFlash Flood WatchLMKAdair, Allen, Barren, Boyle, Breckinridge, Butler and 22 more4 hr
Jul 20, 3:19 PM EDTSpecial Weather StatementLMKJefferson26 min
Jul 20, 3:26 PM EDTSevere Thunderstorm WarningLMKJefferson34 min
Jul 20, 3:43 PM EDTSpecial Weather StatementLMKBullitt32 min
Jul 20, 3:49 PM EDTSpecial Weather StatementLMKHardin26 min
Jul 20, 4:11 PM EDTFlash Flood WarningLMKHardin, Nelson111 min
Jul 20, 4:32 PM EDTSpecial Weather StatementLMKBourbon28 min
Jul 20, 4:40 PM EDTSevere Thunderstorm WarningLMKBourbon, Nicholas35 min
Jul 20, 4:54 PM EDTAreal Flood AdvisoryLMKBourbon2 hr
Jul 20, 5:01 PM EDTSpecial Weather StatementLMKHarrison29 min
Jul 20, 5:04 PM EDTSevere Thunderstorm WarningLMKBourbon, Harrison, Nicholas26 min
Jul 20, 5:05 PM EDTFlash Flood WarningLMKBourbon2 hr
Jul 20, 5:57 PM EDTSpecial Weather StatementLMKHarrison18 min
Jul 20, 6:09 PM EDTSpecial Weather StatementLMKAllen36 min
Jul 20, 6:21 PM EDTSpecial Weather StatementLMKMetcalfe24 min
Jul 20, 1:10 PM EDTSpecial Weather StatementLMKCrawford35 min
Jul 20, 2:03 PM EDTSpecial Weather StatementLMKHarrison27 min
Jul 20, 2:46 PM EDTSpecial Weather StatementLMKHarrison29 min

Nearby

Special Weather Statements in Indiana, 2020Every special weather statement in 2020

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.