Alert archive / Kentucky / Flash Flood Warnings in 2010

Flash Flood Warning 16, NWS Jackson, KY

May 12, 2010Fleming County, Rowan County, Kentucky

NWS Jackson, KY issued this flash flood warning at May 12, 2010, 11:12 AM EDT for Fleming County, Rowan County, Kentucky. It was in force for 5 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: May 12, 2010, 11:12 AM EDT (15:12 UTC)
Expired: May 12, 2010, 4:33 PM EDT
In force: 5 hr
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Flood severity: None

Counties Fleming County, KY, Rowan County, KY

The radar

The Jackson,KY radar (KJKL), 80 km from the middle of the area, began a volume at 15:15 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, 3.2 hours before the alert went out and 129 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: 274 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at May 11, 7:19 PM EDT, 15 hours 53 minutes earlier.

Area forecast discussion, May 11, 7:19 PM EDT, 15 hours 53 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, May 11, 5:56 PM EDT, 17 hours 16 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 Jackson, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 10:10 AM EDT	Flash Flood Watch	JKL	Bath, Elliott, Fleming, Montgomery, Rowan	6 hr
May 12, 10:53 AM EDT	Areal Flood Advisory	JKL	Bath, Fleming, Rowan	6 hr
May 12, 12:12 PM EDT	Areal Flood Advisory	JKL	Bath, Elliott, Montgomery, Rowan	4 hr
May 12, 12:49 PM EDT	Severe Thunderstorm Warning	JKL	Bath, Elliott, Morgan, Rowan	41 min
May 12, 1:38 PM EDT	Flash Flood Warning	JKL	Bath, Elliott, Fleming, Montgomery, Rowan	3 hr
May 12, 7:01 PM EDT	Flash Flood Warning	JKL	Bath	3 hr
May 12, 7:25 PM EDT	Severe Thunderstorm Warning	JKL	Bath	35 min

Nearby

Flash Flood Warnings in Kentucky, 2010 Every flash flood warning in 2010

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.