Alert archive / Kentucky / Areal Flood Warnings in 2021

Areal Flood Warning 1, NWS Jackson, KY

February 27, 20217 counties in Kentucky

NWS Jackson, KY issued this areal flood warning at Feb 27, 2021, 5:28 AM EST for 7 counties in Kentucky. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 27, 2021, 5:28 AM EST (10:28 UTC)
Expired
Feb 27, 2021, 4:31 PM EST
In force
11 hr
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Flood severity
None

Counties Clay County, KY, Knox County, KY, Laurel County, KY, McCreary County, KY, Pulaski County, KY, Wayne County, KY, Whitley County, KY

The radar

The Jackson,KY radar (KJKL), 110 km from the middle of the area, began a volume at 10:27 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 00:00Z, 10.5 hours before the alert went out and 229 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 00:00Z on 2021-02-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2021-02-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 283 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, KY wrote its last area forecast discussion before this areal flood warning went out at Feb 27, 3:51 AM EST, 1 hour 37 minutes earlier.

Area forecast discussion, Feb 27, 3:51 AM EST, 1 hour 37 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, Feb 27, 4:56 AM EST, 32 minutes before
Hazardous Weather Outlook
National Weather Service Jackson KY
456 AM EST Sat Feb 27 2021

KYZ044-050>052-058>060-068-069-079-080-083-084-104-106>109-111-
112-114-281300-
Fleming-Montgomery-Bath-Rowan-Estill-Powell-Menifee-Rockcastle-
Jackson-Pulaski-Laurel-Wayne-McCreary-Elliott-Morgan-Johnson-
Wolfe-Magoffin-Lee-Breathitt-Owsley-
Including the cities of Flemingsburg, Camargo, Jeffersonville,
Mount Sterling, Owingsville, Morehead, Irvine, Ravenna,
Clay City, Stanton, Frenchburg, Brodhead, Mount Vernon, McKee,
Annville, Burnside, Somerset, London, Monticello, Stearns,
Whitley City, Sandy Hook, West Liberty, Paintsville, Campton,
Salyersville, Beattyville, Jackson, and Booneville
456 AM EST Sat Feb 27 2021

...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING...

This hazardous weather outlook is for portions of eastern Kentucky.

.DAY ONE...Today and Tonight.

Heavy rainfall is expected early this morning, mainly south of the
Mountain Parkway. This could lead to some minor flooding.

Heavy rainfall, aided by a few thunderstorms, is expected
tonight. This will lead to a threat for flooding of creeks and
rivers. In addition, flash flooding is also possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Heavy rainfall will continue through Sunday night. A few
thunderstorms are possible through Sunday evening. This will lead
to a threat for flooding of creeks and rivers. In addition, flash
flooding is also possible.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any instances of flooding or
rainfall amounts over an inch through Sunday night.

KYZ085>088-110-113-115>120-281300-
Whitley-Knox-Bell-Harlan-Floyd-Knott-Perry-Clay-Leslie-Letcher-
Martin-Pike-
Including the cities of Corbin, Williamsburg, Barbourville,
Middlesboro, Pineville, Cumberland, Harlan, Prestonsburg,
Wheelwright, Hindman, Pippa Passes, Hazard, Manchester, Hyden,
Jenkins, Whitesburg, Inez, Coal Run, Elkhorn City, Pikeville,
and South Williamson
456 AM EST Sat Feb 27 2021

...FLOOD WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY
MORNING...

This hazardous weather outlook is for portions of eastern Kentucky.

.DAY ONE...Today and Tonight.

Heavy rainfall is expected early this morning. This could lead to
some minor flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Heavy rainfall is expected Sunday and Sunday night. A few
thunderstorms are possible through Sunday evening. This will lead
to a threat for flooding of creeks and rivers. In addition, flash
flooding is also possible.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any instances of flooding or
rainfall amounts over an inch through Sunday night.

KAS/HAL

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 27, 2:29 AM ESTAreal Flood AdvisoryJKLBreathitt, Clay, Jackson, Knox, Laurel, Leslie and 7 more6 hr
Feb 27, 8:43 AM ESTRiver Flood AdvisoryJKLClay36 hr
Feb 27, 8:59 AM ESTAreal Flood WarningJKLBreathitt, Clay, Floyd, Knott, Leslie, Letcher and 4 more8 hr
Feb 27, 1:56 PM ESTRiver Flood WarningJKLOwsley3 days
Feb 27, 1:56 PM ESTRiver Flood WarningJKLEstill6 days
Feb 27, 1:56 PM ESTRiver Flood WarningJKLLee4 days
Feb 27, 6:37 PM ESTAreal Flood AdvisoryJKLClay, Knott, Knox, Laurel, Leslie, Letcher and 1 more3 hr

Nearby

Areal Flood Warnings in Kentucky, 2021Every areal flood warning 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.