Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 327, NWS Louisville, KY

August 31, 2018Breckinridge County, Hardin County, Meade County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 31, 2018, 3:19 PM CDT for Breckinridge County, Hardin County, Meade County, Kentucky. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 31, 2018, 3:19 PM CDT (20:19 UTC)
Expired: Aug 31, 2018, 3:45 PM CDT
In force: 26 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Breckinridge County, KY, Hardin County, KY, Meade County, KY

The radar

The Louisville radar (KLVX), 29 km from the middle of the area, began a volume at 20:19 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

Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 332 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: 67 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 31, 2:36 PM CDT, 43 minutes earlier.

Area forecast discussion, Aug 31, 2:36 PM CDT, 43 minutes before

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Hazardous weather outlook, Aug 31, 2:38 PM CDT, 41 minutes before

Hazardous Weather Outlook
National Weather Service Louisville KY
338 PM EDT Fri Aug 31 2018

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-011945-
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
338 PM EDT Fri Aug 31 2018 /238 PM CDT Fri Aug 31 2018/

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

.DAY ONE...Late this Afternoon and Tonight.

Isolated to scattered showers and storms are expected into the
evening hours. A few strong storms could contain gusty winds, heavy
rain that could lead to localized flooding issues, and cloud to
ground lightning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Isolated to scattered thunderstorms are forecast Saturday and Sunday.
Brief heavy rain and lightning will be the main threats.

Labor Day through most of the next work week will be above normal for
temperatures and humid, with heat indices possibly nearing 100 each
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotters are welcome to report any heavier rainfall amounts as well
as stronger wind gusts.

RJS/EBW

In the hours before

Special weather statement, Aug 31, 1:18 PM CDT, 2 hours 1 minute before

Special Weather Statement
National Weather Service Louisville KY
218 PM EDT FRI AUG 31 2018

INZ077-311845-
Washington-
218 PM EDT FRI AUG 31 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WASHINGTON
COUNTY...

At 218 PM EDT, a strong thunderstorm was located 8 miles west of
Salem, moving northeast at 15 mph.

Wind gusts of 50 to 55 mph and half inch hail are possible with this
storm.

Locations impacted include...
Campbellsburg, Saltillo, Smedley, Rush Creek Valley, Claysville,
Hitchcock and Prowsville.

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 3857 8623 3859 8630 3868 8629 3871 8613
      3870 8610
TIME...MOT...LOC 1818Z 208DEG 12KT 3863 8625

EBW

Special weather statement, Aug 31, 1:30 PM CDT, 1 hour 49 minutes before

Special Weather Statement
National Weather Service Louisville KY
230 PM EDT FRI AUG 31 2018

INZ079-092-KYZ031-032-311900-
Jefferson-Clark-Oldham-Trimble-
230 PM EDT FRI AUG 31 2018

...STRONG THUNDERSTORM OVER THE OHIO RIVER ABOUT MIDWAY BETWEEN
LOUISVILLE AND MADISON...

At 229 PM EDT, a strong thunderstorm was located 7 miles west of
Bedford. The storm is nearly stationary.

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

Locations impacted include...
Bethlehem, Westport, Oldham, Otto, Paynesville, Chelsea, Hibernia,
Wises Landing, and New Washington.

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

LAT...LON 3846 8544 3853 8563 3867 8552 3854 8532
TIME...MOT...LOC 1829Z 209DEG 4KT 3855 8545

13

Special weather statement, Aug 31, 1:48 PM CDT, 1 hour 31 minutes before

Special Weather Statement
National Weather Service Louisville KY
248 PM EDT FRI AUG 31 2018

INZ076-077-311915-
Orange-Washington-
248 PM EDT FRI AUG 31 2018

...STRONG THUNDERSTORMS OVER NORTHERN ORANGE COUNTY AND MUCH OF
WASHINGTON COUNTY...

At 246 PM EDT, radar indicated strong thunderstorms from near Paoli
to near Salem to near New Providence Town. The storms are nearly
stationary.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Salem, Paoli, Orleans, New Pekin, Stampers Creek, Orangeville,
Campbellsburg, Livonia, Saltillo, and Smedley.

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

LAT...LON 3876 8603 3877 8599 3849 8596 3849 8599
      3842 8600 3849 8622 3849 8650 3869 8667
      3869 8631 3873 8631 3874 8629 3877 8628
      3878 8618 3876 8613 3878 8609
TIME...MOT...LOC 1846Z 141DEG 3KT 3862 8641 3863 8620 3851 8604

13

Special weather statement, Aug 31, 2:09 PM CDT, 1 hour 10 minutes before

Special Weather Statement
National Weather Service Louisville KY
209 PM CDT FRI AUG 31 2018

KYZ026-311945-
Ohio-
209 PM CDT FRI AUG 31 2018

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL OHIO COUNTY...

At 208 PM CDT, a strong thunderstorm was located near Hartford,
moving northeast at 20 mph.

Wind gusts up to 50 mph and pea size hail are possible with this
storm.

Locations impacted include...
Hartford, Beaver Dam, Fordsville, Taffy, Ralph, Magan, Jingo,
Pleasant Ridge, Heflin and Ellmitch.

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

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3760 8699 3763 8695 3762 8692 3764 8689
      3765 8687 3767 8684 3767 8682 3771 8687
      3773 8684 3766 8664 3765 8664 3736 8684
      3745 8704
TIME...MOT...LOC 1908Z 207DEG 19KT 3751 8687

RJS

Special weather statement, Aug 31, 3:06 PM CDT, 13 minutes before

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Special weather statement, Aug 31, 3:15 PM CDT, 4 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 31, 1:30 PM CDT	Special Weather Statement	LMK	Trimble	30 min
Aug 31, 2:09 PM CDT	Special Weather Statement	LMK	Ohio	36 min
Aug 31, 3:06 PM CDT	Special Weather Statement	LMK	Hardin	24 min
Aug 31, 3:15 PM CDT	Special Weather Statement	LMK	Breckinridge	30 min
Aug 31, 4:41 PM CDT	Special Weather Statement	LMK	Bullitt	34 min
Aug 31, 5:27 PM CDT	Special Weather Statement	LMK	Jefferson, Shelby	33 min
Aug 31, 12:25 PM CDT	Special Weather Statement	LMK	Orange	20 min
Aug 31, 12:51 PM CDT	Special Weather Statement	LMK	Washington	24 min
Aug 31, 1:08 PM CDT	Areal Flood Advisory	LMK	Washington	3 hr
Aug 31, 1:10 PM CDT	Special Weather Statement	LMK	Washington	20 min
Aug 31, 1:18 PM CDT	Special Weather Statement	LMK	Washington	27 min
Aug 31, 1:48 PM CDT	Special Weather Statement	LMK	Orange, Washington	27 min
Aug 31, 2:19 PM CDT	Areal Flood Advisory	LMK	Orange, Washington	116 min
Aug 31, 3:50 PM CDT	Areal Flood Advisory	LMK	Clark	3 hr
Aug 31, 5:07 PM CDT	Areal Flood Advisory	LMK	Floyd, Harrison	113 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2018 Every severe thunderstorm warning in 2018

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.