Alert archive / Kentucky / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 306, NWS Louisville, KY

August 25, 2023Jefferson County, Shelby County, Spencer County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Aug 25, 2023, 7:39 PM EDT for Jefferson County, Shelby County, Spencer County, Kentucky. It was in force for 36 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 25, 2023, 7:39 PM EDT (23:39 UTC)
Expired
Aug 25, 2023, 8:15 PM EDT
In force
36 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Jefferson County, KY, Shelby County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 52 km from the middle of the area, began a volume at 23:41 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, 11.7 hours before the alert went out and 199 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, Cncnati-Daytn, OH at 12:00Z on 2023-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3167 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, Cncnati-Daytn, OH at 12:00Z on 2023-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 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
3167 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
1.9
Supercell composite
11.3

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 25, 7:35 PM EDT, 4 minutes earlier.

Area forecast discussion, Aug 25, 7:35 PM EDT, 4 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Aug 25, 3:34 PM EDT, 4 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
334 PM EDT Fri Aug 25 2023

KYZ042-043-049-056-057-066-067-078-082-261945-
Bourbon-Nicholas-Clark KY-Garrard-Madison-Casey-Lincoln-Russell-
Clinton-
334 PM EDT Fri Aug 25 2023 /234 PM CDT Fri Aug 25 2023/

...HEAT ADVISORY IN EFFECT UNTIL 11 PM EDT /10 PM CDT/ THIS
EVENING...

This Hazardous Weather Outlook is for east central Kentucky and
south central Kentucky.

.DAY ONE...This afternoon and tonight.

The combination of hot temperatures and high dewpoints will result
in dangerous heat indices for much of the region. For more
information regarding this hazard, please refer to our latest heat
products in effect.

Additionally, isolated storms may develop this evening. A few of
them could be strong to severe, with gusty winds being the main
threat.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

GENERAL STORM MOTION OF THE DAY:

Storms this evening will move toward the southeast around 15 to 20
mph.

Any users of this storm motion must be aware that thunderstorm activity
can be erratic and constantly evolving.  Please use this with caution
and be prepared for changing conditions.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

INZ076>079-083-084-089>092-KYZ023>041-045>048-053>055-061>065-
070>077-081-261945-
Orange-Washington IN-Scott IN-Jefferson IN-Dubois-Crawford-Perry-
Harrison IN-Floyd-Clark IN-Hancock-Breckinridge-Meade-Ohio-Grayson-
Hardin-Bullitt-Jefferson KY-Oldham-Trimble-Henry-Shelby-Franklin-
Scott KY-Harrison KY-Spencer-Anderson-Woodford-Fayette-Nelson-
Washington KY-Mercer-Jessamine-Larue-Marion-Boyle-Butler-Edmonson-
Hart-Green-Taylor-Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-
Adair-Cumberland-
334 PM EDT Fri Aug 25 2023 /234 PM CDT Fri Aug 25 2023/

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 11 PM EDT /10 PM CDT/ THIS
EVENING...

This Hazardous Weather Outlook is for Indiana, south central
Indiana, east central Kentucky, north central Kentucky, northwest
Kentucky and south central Kentucky.

.DAY ONE...This afternoon and tonight.

The combination of hot temperatures and high dewpoints will result
in dangerous heat indices for much of the region. For more
information regarding this hazard, please refer to our latest heat
products in effect.

Additionally, isolated storms may develop this evening. A few of
them could be strong to severe, with gusty winds being the main
threat.

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

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

GENERAL STORM MOTION OF THE DAY:

Storms this evening will move toward the southeast around 15 to 20
mph.

Any users of this storm motion must be aware that thunderstorm activity
can be erratic and constantly evolving.  Please use this with caution
and be prepared for changing conditions.

&&

More information, along with other weather, hydrological and
climate information can be found, at weather.gov/louisville.

13

In the hours before

Special weather statement, Aug 25, 6:39 PM EDT, 1 hour before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Aug 25, 6:52 PM EDT, 47 minutes before
Preliminary Local Storm Report
National Weather Service Louisville KY
652 PM EDT Fri Aug 25 2023

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

0625 PM     Tstm Wnd Dmg     1 E Lexington           38.05N 84.49W
08/25/2023                   Fayette            KY   Broadcast Media

            Multiple reports of power lines down in
            Lexington.

&&

CSG
Local storm report, Aug 25, 7:07 PM EDT, 32 minutes before
Preliminary Local Storm Report
National Weather Service Louisville KY
707 PM EDT Fri Aug 25 2023

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

0605 PM     Tstm Wnd Dmg     Georgetown              38.21N 84.55W
08/25/2023                   Scott              KY   Broadcast Media

            Multiple reports of trees down across
            Georgetown and Scott County. Power outages
            also reported across the county. Time
            estimated from radar.

&&

CSG
Special weather statement, Aug 25, 7:10 PM EDT, 29 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Aug 25, 7:16 PM EDT, 23 minutes before
Preliminary Local Storm Report
National Weather Service Louisville KY
716 PM EDT Fri Aug 25 2023

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

0640 PM     Tstm Wnd Gst     3 N Mt. Eden            38.09N 85.14W
08/25/2023  M83 MPH          Shelby             KY   Mesonet

            KY Mesonet site WADD measured 83 mph wind
            gust.

&&

CSG
Special weather statement, Aug 25, 7:33 PM EDT, 6 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 3:26 PM EDTSpecial Weather StatementLMKNicholas34 min
Aug 25, 4:45 PM EDTSpecial Weather StatementLMKNicholas45 min
Aug 25, 5:00 PM EDTSevere Thunderstorm WarningLMKNicholas15 min
Aug 25, 5:14 PM EDTSpecial Weather StatementLMKScott31 min
Aug 25, 5:25 PM EDTSpecial Weather StatementLMKHarrison35 min
Aug 25, 5:35 PM EDTSevere Thunderstorm WarningLMKBourbon, Harrison, Nicholas25 min
Aug 25, 5:41 PM EDTSevere Thunderstorm WarningLMKBourbon, Fayette, Franklin, Scott, Woodford34 min
Aug 25, 5:54 PM EDTSevere Thunderstorm WarningLMKBourbon, Clark, Fayette, Jessamine, Nicholas36 min
Aug 25, 6:08 PM EDTSpecial Weather StatementLMKHenry, Shelby, Trimble37 min
Aug 25, 6:16 PM EDTSevere Thunderstorm WarningLMKAnderson, Franklin, Henry, Scott, Shelby, Woodford29 min
Aug 25, 6:23 PM EDTSpecial Weather StatementLMKClark, Jessamine, Madison37 min
Aug 25, 6:34 PM EDTSpecial Weather StatementLMKJefferson26 min
Aug 25, 6:39 PM EDTSpecial Weather StatementLMKAnderson, Fayette, Franklin, Oldham, Scott, Shelby and 2 more36 min
Aug 25, 6:44 PM EDTSevere Thunderstorm WarningLMKAnderson, Fayette, Woodford31 min
Aug 25, 6:56 PM EDTSevere Thunderstorm Warning Considerable damage threatLMKAnderson, Franklin, Mercer, Shelby, Spencer, Washington34 min
Aug 25, 7:10 PM EDTSpecial Weather StatementLMKAnderson, Boyle, Garrard, Jefferson, Jessamine, Lincoln and 6 more35 min
Aug 25, 7:13 PM EDTSevere Thunderstorm WarningLMKAnderson, Mercer, Nelson, Spencer, Washington32 min
Aug 25, 7:50 PM EDTSevere Thunderstorm WarningLMKBullitt, Nelson, Spencer25 min
Aug 25, 5:27 PM EDTSpecial Weather StatementLMKJefferson48 min
Aug 25, 6:26 PM EDTSpecial Weather StatementLMKDubois34 min
Aug 25, 7:33 PM EDTSpecial Weather StatementLMKFloyd27 min
Aug 25, 7:59 PM EDTSpecial Weather StatementLMKFloyd31 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2023Every severe thunderstorm warning in 2023

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.