Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 252, NWS Louisville, KY

July 20, 2018Barren County, Metcalfe County, Monroe County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 20, 2018, 6:29 PM CDT for Barren County, Metcalfe County, Monroe County, Kentucky. It was in force for 31 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 20, 2018, 6:29 PM CDT (23:29 UTC)
Expired
Jul 20, 2018, 7:00 PM CDT
In force
31 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Barren County, KY, Metcalfe County, KY, Monroe County, KY

The radar

The Nashville radar (KOHX), 102 km from the middle of the area, began a volume at 23:30 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.

What was reported inside it

TimeReportWhereRemark
Jul 20, 6:54 PM CDTHAIL 4Tompkinsville, KYVERIFIED PHOTO ON TWITTER. TIME ESTIMATED FROM RADAR.
Jul 20, 7:00 PM CDTHAIL 1Tompkinsville, KYREPORTED AT TOMPKINSVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 20, 12:37 PM CDTTornado WatchSPC7 hr
Jul 20, 6:22 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.5 hours before the alert went out and 113 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 2018-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 918 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 2018-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.193958Sfc1 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
918 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
766 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.7
Supercell composite
5.7

Open this sounding in Storm Lab

The text

As transmitted.

160 
WUUS53 KLMK 202329 RRA
SVRLMK
KYC009-169-171-210000-
/O.NEW.KLMK.SV.W.0252.180720T2329Z-180721T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
629 PM CDT FRI JUL 20 2018

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Monroe County in south central Kentucky...
  Southeastern Barren County in south central Kentucky...
  Southern Metcalfe County in south central Kentucky...

* Until 700 PM CDT.

* At 629 PM CDT, a severe thunderstorm was located 9 miles northwest
  of Tompkinsville, moving east at 30 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Glasgow, Tompkinsville, Edmonton, Gamaliel, Eighty Eight, Curtis,
  Gum Tree, Harlan Crossroads, Lecta and Willow Shade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A Tornado Watch remains in effect until 200 AM CDT for south central
Kentucky.

LAT...LON 3663 8595 3705 8591 3703 8551 3685 8556
      3687 8558 3687 8560 3684 8558 3682 8558
      3682 8560 3678 8559 3678 8558 3662 8562
TIME...MOT...LOC 2329Z 282DEG 24KT 3679 8583 

HAIL...1.25IN
WIND...60MPH
 
$$

DM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 4:30 AM CDTSpecial Weather StatementLMKOldham30 min
Jul 20, 5:38 AM CDTSpecial Weather StatementLMKFranklin, Scott, Shelby52 min
Jul 20, 7:42 AM CDTSpecial Weather StatementLMKHenry33 min
Jul 20, 8:17 AM CDTSpecial Weather StatementLMKHenry28 min
Jul 20, 8:35 AM CDTAreal Flood AdvisoryLMKFranklin, Scott115 min
Jul 20, 8:50 AM CDTSpecial Weather StatementLMKNicholas, Scott40 min
Jul 20, 9:29 AM CDTSpecial Weather StatementLMKBourbon, Scott31 min
Jul 20, 11:54 AM CDTSevere Thunderstorm WarningLMKMeade51 min
Jul 20, 12:53 PM CDTSevere Thunderstorm WarningLMKTrimble37 min
Jul 20, 12:57 PM CDTSpecial Weather StatementLMKScott33 min
Jul 20, 1:20 PM CDTSevere Thunderstorm WarningLMKJefferson70 min
Jul 20, 1:20 PM CDTTornado WarningLMKTrimble25 min
Jul 20, 1:21 PM CDTSevere Thunderstorm WarningLMKHardin, Meade24 min
Jul 20, 1:44 PM CDTSevere Thunderstorm WarningLMKBullitt, Hardin, Jefferson, Meade34 min
Jul 20, 2:01 PM CDTAreal Flood AdvisoryLMKJefferson3 hr
Jul 20, 2:09 PM CDTSevere Thunderstorm WarningLMKBullitt, Jefferson, Shelby, Spencer36 min
Jul 20, 2:16 PM CDTSpecial Weather StatementLMKBullitt29 min
Jul 20, 2:17 PM CDTSpecial Weather StatementLMKShelby28 min
Jul 20, 2:23 PM CDTSevere Thunderstorm WarningLMKBullitt, Nelson, Spencer52 min
Jul 20, 2:34 PM CDTAreal Flood AdvisoryLMKScott3 hr
Jul 20, 2:38 PM CDTSevere Thunderstorm WarningLMKAnderson, Franklin, Scott, Shelby, Woodford37 min
Jul 20, 2:39 PM CDTTornado WarningLMKBullitt, Nelson51 min
Jul 20, 2:44 PM CDTSevere Thunderstorm WarningLMKHarrison, Nicholas, Scott31 min
Jul 20, 2:51 PM CDTSevere Thunderstorm WarningLMKAnderson, Fayette, Jessamine, Scott, Woodford39 min
Jul 20, 2:55 PM CDTSevere Thunderstorm WarningLMKBourbon, Scott, Woodford20 min
Jul 20, 2:58 PM CDTSevere Thunderstorm WarningLMKAnderson, Nelson, Spencer, Washington62 min
Jul 20, 3:08 PM CDTSevere Thunderstorm WarningLMKBourbon, Harrison, Nicholas37 min
Jul 20, 3:14 PM CDTTornado WarningLMKMercer, Nelson, Washington25 min
Jul 20, 3:19 PM CDTSevere Thunderstorm WarningLMKClark, Fayette, Jessamine, Madison26 min
Jul 20, 3:27 PM CDTFlash Flood WarningLMKHarrison3 hr
Jul 20, 3:29 PM CDTAreal Flood AdvisoryLMKFayette3 hr
Jul 20, 3:33 PM CDTSpecial Weather StatementLMKLarue27 min
Jul 20, 3:36 PM CDTSevere Thunderstorm WarningLMKAnderson, Mercer, Washington, Woodford24 min
Jul 20, 3:44 PM CDTAreal Flood AdvisoryLMKBourbon3 hr
Jul 20, 3:44 PM CDTSevere Thunderstorm WarningLMKMarion, Nelson, Washington46 min
Jul 20, 3:52 PM CDTSevere Thunderstorm WarningLMKClark, Fayette, Jessamine, Madison38 min
Jul 20, 3:59 PM CDTSpecial Weather StatementLMKLarue31 min
Jul 20, 3:59 PM CDTSevere Thunderstorm WarningLMKAnderson, Fayette, Garrard, Jessamine, Mercer, Washington and 1 more31 min
Jul 20, 4:09 PM CDTAreal Flood AdvisoryLMKClark, Fayette, Jessamine, Madison, Mercer, Woodford3 hr
Jul 20, 4:12 PM CDTTornado WarningLMKMarion, Nelson, Washington26 min
Jul 20, 4:20 PM CDTSevere Thunderstorm WarningLMKGarrard, Madison25 min
Jul 20, 4:21 PM CDTSevere Thunderstorm WarningLMKLarue, Marion, Taylor54 min
Jul 20, 4:26 PM CDTSpecial Weather StatementLMKAnderson34 min
Jul 20, 4:30 PM CDTSevere Thunderstorm WarningLMKBoyle, Garrard, Jessamine, Madison, Mercer30 min
Jul 20, 4:34 PM CDTSpecial Weather StatementLMKJessamine26 min
Jul 20, 4:37 PM CDTSevere Thunderstorm WarningLMKBoyle, Mercer, Washington38 min
Jul 20, 4:49 PM CDTSevere Thunderstorm WarningLMKGarrard, Madison26 min
Jul 20, 4:56 PM CDTSpecial Weather StatementLMKMarion34 min
Jul 20, 4:57 PM CDTSpecial Weather StatementLMKWashington33 min
Jul 20, 5:01 PM CDTSevere Thunderstorm WarningLMKAnderson, Nelson, Washington17 min
Jul 20, 5:02 PM CDTSpecial Weather StatementLMKHart28 min
Jul 20, 5:05 PM CDTSevere Thunderstorm WarningLMKLarue, Marion, Washington40 min
Jul 20, 5:15 PM CDTSpecial Weather StatementLMKGarrard, Madison30 min
Jul 20, 5:18 PM CDTSevere Thunderstorm WarningLMKCasey, Lincoln, Marion42 min
Jul 20, 5:19 PM CDTSpecial Weather StatementLMKBourbon26 min
Jul 20, 5:24 PM CDTSevere Thunderstorm WarningLMKAdair, Green, Metcalfe36 min
Jul 20, 5:29 PM CDTTornado WarningLMKCasey, Lincoln61 min
Jul 20, 5:30 PM CDTAreal Flood AdvisoryLMKClark, Garrard, Jessamine, Madison3 hr
Jul 20, 5:43 PM CDTSevere Thunderstorm WarningLMKAdair, Casey, Green, Taylor32 min
Jul 20, 5:45 PM CDTSevere Thunderstorm WarningLMKBoyle, Casey, Marion, Washington30 min
Jul 20, 5:52 PM CDTSevere Thunderstorm WarningLMKCumberland, Metcalfe, Monroe38 min
Jul 20, 5:56 PM CDTSevere Thunderstorm WarningLMKAdair, Cumberland, Metcalfe49 min
Jul 20, 6:06 PM CDTSevere Thunderstorm WarningLMKBoyle, Casey, Lincoln, Marion, Taylor24 min
Jul 20, 6:08 PM CDTSevere Thunderstorm WarningLMKTrimble37 min
Jul 20, 6:15 PM CDTSevere Thunderstorm WarningLMKAdair, Green, Taylor30 min
Jul 20, 6:18 PM CDTSevere Thunderstorm WarningLMKOldham27 min
Jul 20, 6:24 PM CDTSevere Thunderstorm WarningLMKAdair, Clinton, Cumberland, Monroe, Russell36 min
Jul 20, 6:29 PM CDTSevere Thunderstorm WarningLMKBoyle, Casey, Garrard, Lincoln31 min
Jul 20, 6:34 PM CDTSevere Thunderstorm WarningLMKOldham26 min
Jul 20, 6:42 PM CDTSevere Thunderstorm WarningLMKAdair, Taylor33 min
Jul 20, 6:45 PM CDTSevere Thunderstorm WarningLMKOldham15 min
Jul 20, 6:54 PM CDTSevere Thunderstorm WarningLMKMeade23 min
Jul 20, 6:55 PM CDTSevere Thunderstorm WarningLMKOldham, Shelby35 min
Jul 20, 6:59 PM CDTSevere Thunderstorm WarningLMKAdair, Clinton, Cumberland, Metcalfe, Monroe, Russell46 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2018Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.