Alert archive / Kentucky / Special Weather Statements in 2021

Special Weather Statement, NWS Louisville, KY

August 25, 2021Shelby County, Kentucky

NWS Louisville, KY issued this special weather statement at Aug 25, 2021, 3:16 PM EDT for Shelby County, Kentucky. It was in force for 44 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 25, 2021, 3:16 PM EDT (19:16 UTC)
Expired
Aug 25, 2021, 4:00 PM EDT
In force
44 min
Issued by
NWS Louisville, KY
Hail
0.00 in
Wind
40

County Shelby County, KY

The radar

The Louisville radar (KLVX), 55 km from the middle of the area, began a volume at 19:16 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, 7.3 hours before the alert went out and 196 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 2021-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1234 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 2021-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1234 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
97 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 25, 12:31 PM EDT, 2 hours 45 minutes earlier.

Area forecast discussion, Aug 25, 12:31 PM EDT, 2 hours 45 minutes before
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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 25, 3:27 AM EDT, 11 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Louisville KY
327 AM EDT Wed Aug 25 2021

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-260730-
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
327 AM EDT Wed Aug 25 2021 /227 AM CDT Wed Aug 25 2021/

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

.DAY ONE...Today and Tonight.

Heat indices this afternoon will top out near 103 degrees along and
west of Interstate 65.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Heat index values will generally range from 100 to 105 degrees in
the afternoon Wednesday and Thursday along and west of I-65.

Isolated to widely scattered storms are forecast each afternoon and
evening. Locally heavy rainfall and lightning are the primary storm
hazards. A cold front approaching Monday may bring more widespread
activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely not be needed at least through the
weekend.

KDW/13

In the hours before

Special weather statement, Aug 25, 2:00 PM EDT, 1 hour 16 minutes before
Special Weather Statement
National Weather Service Louisville KY
200 PM EDT Wed Aug 25 2021

INZ077-078-251845-
Washington IN-Scott IN-
200 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of west central Scott
and northeastern Washington Counties through 245 PM EDT...

At 200 PM EDT, Doppler radar was tracking a strong thunderstorm near
Brownstown, moving southeast at 10 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of northeastern
Washington and west central Scott Counties, including the following
locations... New Philadelphia, Kossuth, Plattsburg, Canton,
Harristown and Little York.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3876 8603 3877 8602 3876 8601 3877 8598
      3875 8598 3876 8596 3875 8595 3876 8594
      3875 8592 3875 8590 3873 8588 3874 8585
      3869 8579 3856 8610 3878 8621 3877 8620
      3878 8618 3876 8613 3878 8609
TIME...MOT...LOC 1800Z 326DEG 7KT 3880 8610

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MJ
Special weather statement, Aug 25, 2:07 PM EDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Louisville KY
207 PM EDT Wed Aug 25 2021

KYZ042-043-251830-
Bourbon KY-Nicholas KY-
207 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of east central Bourbon
and southeastern Nicholas Counties through 230 PM EDT...

At 207 PM EDT, Doppler radar was tracking a strong thunderstorm near
Sharpsburg, moving east at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of east central
Bourbon and southeastern Nicholas Counties, including the following
locations... Plum, Sprout, East Union, Weston and Moorefield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3830 8385 3819 8398 3818 8399 3815 8404
      3832 8405 3835 8387 3835 8386 3833 8386
      3833 8385 3834 8384 3832 8385 3831 8383
TIME...MOT...LOC 1807Z 268DEG 13KT 3824 8396

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MJ
Special weather statement, Aug 25, 2:15 PM EDT, 1 hour 1 minute before
Special Weather Statement
National Weather Service Louisville KY
215 PM EDT Wed Aug 25 2021

KYZ037-251900-
Harrison KY-
215 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of Harrison County
through 300 PM EDT...

At 215 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Falmouth, moving southeast at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Cynthiana.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3831 8431 3852 8448 3854 8448 3853 8446
      3854 8443 3857 8441 3858 8422 3857 8420
      3856 8422 3855 8421 3856 8419 3854 8416
      3853 8418 3850 8418 3850 8416 3849 8417
      3848 8415 3848 8413 3846 8411
TIME...MOT...LOC 1815Z 318DEG 15KT 3855 8435

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MJ
Special weather statement, Aug 25, 2:16 PM EDT, 1 hour before
Special Weather Statement
National Weather Service Louisville KY
216 PM EDT Wed Aug 25 2021

KYZ033>035-251900-
Shelby KY-Henry KY-Franklin KY-
216 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of northeastern Shelby,
southeastern Henry and Franklin Counties through 300 PM EDT...

At 216 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles east of New Castle, moving southeast at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Frankfort.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3846 8495 3844 8496 3843 8496 3843 8494
      3846 8493 3845 8491 3844 8493 3842 8488
      3838 8490 3837 8487 3836 8487 3835 8481
      3828 8473 3828 8474 3814 8493 3836 8513
      3848 8497
TIME...MOT...LOC 1816Z 318DEG 15KT 3838 8499

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MJ
Special weather statement, Aug 25, 2:54 PM EDT, 22 minutes before
Special Weather Statement
National Weather Service Louisville KY
254 PM EDT Wed Aug 25 2021

KYZ043-251930-
Nicholas KY-
254 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of eastern Nicholas
County through 330 PM EDT...

At 254 PM EDT, Doppler radar was tracking a strong thunderstorm near
Carlisle, moving southeast at 25 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of eastern Nicholas
County, including the following locations... Sprout, East Union,
Weston, Moorefield, Pleasant Valley and Myers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3830 8385 3821 8396 3827 8407 3842 8395
      3839 8393 3836 8392 3836 8389 3835 8390
      3836 8387 3835 8387 3835 8386 3833 8386
      3834 8384 3832 8385 3831 8383
TIME...MOT...LOC 1854Z 299DEG 23KT 3832 8393

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

MJ
Special weather statement, Aug 25, 3:16 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Louisville KY
316 PM EDT Wed Aug 25 2021

KYZ030-031-034-038-252000-
Jefferson KY-Oldham KY-Shelby KY-Spencer KY-
316 PM EDT Wed Aug 25 2021

...A strong thunderstorm will impact portions of northwestern
Spencer, south central Oldham, western Shelby and east central
Jefferson Counties through 400 PM EDT...

At 316 PM EDT, Doppler radar was tracking a strong thunderstorm near
Middletown, moving east at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Shelbyville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 3827 8513 3802 8525 3810 8544 3811 8543
      3812 8543 3811 8546 3815 8556 3833 8548
TIME...MOT...LOC 1916Z 290DEG 13KT 3822 8544

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MJ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 2:07 PM EDTSpecial Weather StatementLMKNicholas23 min
Aug 25, 2:15 PM EDTSpecial Weather StatementLMKHarrison45 min
Aug 25, 2:16 PM EDTSpecial Weather StatementLMKFranklin44 min
Aug 25, 2:54 PM EDTSpecial Weather StatementLMKNicholas36 min
Aug 25, 2:56 PM EDTAreal Flood AdvisoryLMKNicholas2 hr
Aug 25, 3:49 PM EDTAreal Flood AdvisoryLMKClark, Fayette3 hr
Aug 25, 3:50 PM EDTSpecial Weather StatementLMKFayette25 min
Aug 25, 5:00 PM EDTSpecial Weather StatementLMKGrayson30 min
Aug 25, 5:15 PM EDTSpecial Weather StatementLMKLarue15 min
Aug 25, 5:27 PM EDTSpecial Weather StatementLMKLarue33 min
Aug 25, 5:38 PM EDTSpecial Weather StatementLMKGrayson37 min
Aug 25, 2:00 PM EDTSpecial Weather StatementLMKWashington45 min
Aug 25, 3:48 PM EDTSpecial Weather StatementLMKCrawford27 min
Aug 25, 3:58 PM EDTSpecial Weather StatementLMKFloyd32 min

Nearby

Special Weather Statements in Kentucky, 2021Every special weather statement in 2021

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.