Alert archive / Kentucky / Special Weather Statements in 2020

Special Weather Statement, NWS Louisville, KY

August 18, 2020Warren County, Kentucky

NWS Louisville, KY issued this special weather statement at Aug 18, 2020, 6:21 PM CDT for Warren County, Kentucky. It was in force for 24 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: Aug 18, 2020, 6:21 PM CDT (23:21 UTC)
Expired: Aug 18, 2020, 6:45 PM CDT
In force: 24 min
Issued by: NWS Louisville, KY

County Warren County, KY

The radar

The Nashville radar (KOHX), 93 km from the middle of the area, began a volume at 23:21 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, 11.4 hours before the alert went out and 106 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: 28 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1481 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 68 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 Aug 18, 6:06 PM CDT, 15 minutes earlier.

Area forecast discussion, Aug 18, 6:06 PM CDT, 15 minutes before

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Hazardous weather outlook, Aug 18, 2:26 PM CDT, 3 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
326 PM EDT Tue Aug 18 2020

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-191930-
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
326 PM EDT Tue Aug 18 2020 /226 PM CDT Tue Aug 18 2020/

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

.DAY ONE...Tonight.

Scattered to numerous storms are expected through this evening,
especially over southern Indiana and north central Kentucky. Locally
heavy downpours, strong gusty winds and small hail will be the main
threats. Storms will taper off from north to south this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Isolated to scattered thunderstorms will be possible each afternoon
from Wednesday through the weekend, especially across south central
Kentucky. The greatest coverage will be on Friday and Saturday. The
main hazards will be brief heavy rainfall and lightning.

.SPOTTER INFORMATION STATEMENT...

Spotters are welcome to report gusty winds, hail and flooding this
afternoon.

AMS/JML

In the hours before

Local storm report, Aug 18, 5:09 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
609 PM EDT TUE AUG 18 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0324 PM     FLASH FLOOD      1 SSW MARENGO           38.36N 86.35W
08/18/2020                   CRAWFORD           IN   911 CALL CENTER

            WATER OVER SOUTH SR 66.

&&

RAS

Special weather statement, Aug 18, 5:10 PM CDT, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Louisville KY
510 PM CDT Tue Aug 18 2020

KYZ026-061-182245-
Butler-Ohio-
510 PM CDT Tue Aug 18 2020

...A STRONG THUNDERSTORM WILL AFFECT WESTERN BUTLER AND SOUTH CENTRAL
OHIO COUNTIES...

At 509 PM CDT, a strong thunderstorm was located 10 miles west of
Morgantown, moving southeast at 20 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Morgantown, Rochester, South Hill, Huntsville, Shultztown, Mining
City, Aberdeen, Leetown, Harper Crossroads and Logansport.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3726 8697 3734 8687 3722 8660 3705 8682
      3707 8694 3709 8690 3711 8690 3711 8689
      3716 8693 3718 8692 3718 8690 3719 8689
      3719 8691 3722 8690 3723 8692 3724 8691
      3724 8694 3726 8696
TIME...MOT...LOC 2209Z 307DEG 14KT 3722 8687

EBW

Special weather statement, Aug 18, 5:46 PM CDT, 35 minutes before

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Special weather statement, Aug 18, 6:01 PM CDT, 20 minutes before

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Special weather statement, Aug 18, 6:05 PM CDT, 16 minutes before

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Special weather statement, Aug 18, 6:21 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 11:34 AM CDT	Special Weather Statement	LMK	Oldham	26 min
Aug 18, 11:40 AM CDT	Special Weather Statement	LMK	Harrison	35 min
Aug 18, 11:47 AM CDT	Special Weather Statement	LMK	Henry	28 min
Aug 18, 12:01 PM CDT	Special Weather Statement	LMK	Shelby	29 min
Aug 18, 12:28 PM CDT	Special Weather Statement	LMK	Trimble	32 min
Aug 18, 12:33 PM CDT	Special Weather Statement	LMK	Shelby	27 min
Aug 18, 12:40 PM CDT	Special Weather Statement	LMK	Nicholas	35 min
Aug 18, 1:02 PM CDT	Special Weather Statement	LMK	Franklin	28 min
Aug 18, 1:07 PM CDT	Special Weather Statement	LMK	Nicholas	23 min
Aug 18, 1:24 PM CDT	Special Weather Statement	LMK	Franklin, Scott, Woodford	36 min
Aug 18, 1:32 PM CDT	Areal Flood Advisory	LMK	Nicholas	3 hr
Aug 18, 1:56 PM CDT	Special Weather Statement	LMK	Harrison	34 min
Aug 18, 2:12 PM CDT	Severe Thunderstorm Warning	LMK	Bourbon, Harrison, Nicholas	58 min
Aug 18, 2:42 PM CDT	Special Weather Statement	LMK	Bourbon	33 min
Aug 18, 2:46 PM CDT	Special Weather Statement	LMK	Anderson	29 min
Aug 18, 2:57 PM CDT	Severe Thunderstorm Warning	LMK	Anderson, Franklin, Shelby, Woodford	33 min
Aug 18, 3:04 PM CDT	Special Weather Statement	LMK	Hancock	41 min
Aug 18, 3:18 PM CDT	Special Weather Statement	LMK	Woodford	27 min
Aug 18, 3:24 PM CDT	Areal Flood Advisory	LMK	Anderson, Franklin, Woodford	3 hr
Aug 18, 3:35 PM CDT	Special Weather Statement	LMK	Jessamine	25 min
Aug 18, 3:49 PM CDT	Areal Flood Advisory	LMK	Meade	3 hr
Aug 18, 4:06 PM CDT	Special Weather Statement	LMK	Meade	24 min
Aug 18, 4:17 PM CDT	Special Weather Statement	LMK	Ohio	28 min
Aug 18, 4:29 PM CDT	Special Weather Statement	LMK	Meade	31 min
Aug 18, 4:46 PM CDT	Special Weather Statement	LMK	Grayson	29 min
Aug 18, 4:52 PM CDT	Special Weather Statement	LMK	Grayson	38 min
Aug 18, 5:10 PM CDT	Special Weather Statement	LMK	Butler	35 min
Aug 18, 5:26 PM CDT	Severe Thunderstorm Warning	LMK	Grayson, Hardin, Hart	34 min
Aug 18, 5:46 PM CDT	Special Weather Statement	LMK	Larue	29 min
Aug 18, 6:01 PM CDT	Special Weather Statement	LMK	Edmonson	29 min
Aug 18, 6:05 PM CDT	Special Weather Statement	LMK	Green	40 min
Aug 18, 6:34 PM CDT	Special Weather Statement	LMK	Green	26 min
Aug 18, 6:42 PM CDT	Special Weather Statement	LMK	Barren	33 min
Aug 18, 11:48 AM CDT	Special Weather Statement	LMK	Jefferson	27 min
Aug 18, 1:16 PM CDT	Special Weather Statement	LMK	Floyd	29 min
Aug 18, 1:28 PM CDT	Special Weather Statement	LMK	Crawford	32 min
Aug 18, 1:33 PM CDT	Special Weather Statement	LMK	Crawford	27 min
Aug 18, 1:45 PM CDT	Areal Flood Advisory	LMK	Crawford, Harrison, Orange, Perry, Washington	3 hr
Aug 18, 1:49 PM CDT	Special Weather Statement	LMK	Floyd	26 min
Aug 18, 2:04 PM CDT	Special Weather Statement	LMK	Harrison	26 min
Aug 18, 2:39 PM CDT	Flash Flood Warning	LMK	Crawford, Harrison, Orange, Washington	2 hr
Aug 18, 2:44 PM CDT	Special Weather Statement	LMK	Dubois	31 min
Aug 18, 3:09 PM CDT	Areal Flood Advisory	LMK	Dubois, Perry	3 hr
Aug 18, 3:10 PM CDT	Special Weather Statement	LMK	Harrison	50 min
Aug 18, 3:38 PM CDT	Special Weather Statement	LMK	Dubois	37 min
Aug 18, 3:41 PM CDT	Special Weather Statement	LMK	Perry	34 min

Nearby

Special Weather Statements in Kentucky, 2020 Every 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.