Alert archive / Kentucky / Mesoscale Discussions in 2017

Mesoscale Discussion 383

March 30, 201713 counties in Indiana; 34 counties in Kentucky; 22 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2017, 6:40 PM EDT for 13 counties in Indiana; 34 counties in Kentucky; 22 counties in Tennessee. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Mar 30, 2017, 6:40 PM EDT (22:40 UTC)
Expired
Mar 30, 2017, 7:45 PM EDT
In force
65 min
Issued by
the Storm Prediction Center
All 69 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Christian County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Lyon County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Webster County, KY, Benton County, TN, Carroll County, TN, Cheatham County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lewis County, TN, Macon County, TN, Maury County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Rutherford County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Williamson County, TN, Wilson County, TN

The radar

The Ft Campbell radar (KHPX), 49 km from the middle of the area, began a volume at 22:40 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 12:00Z, 10.7 hours before the alert went out and 121 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 2017-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 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 2017-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
35 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 1:31 PM EDTSevere Thunderstorm WatchSPCGibson, Posey7 hr
Mar 30, 1:55 PM EDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Clay, Clinton and 54 more2 hr
Mar 30, 3:03 PM EDTTornado WatchSPCAdams, Bartholomew, Blackford, Boone, Brown, Carroll and 42 more5 hr
Mar 30, 4:27 PM EDTMesoscale DiscussionSPCBlackford, Boone, Brown, Clay, Clinton, Daviess and 36 more33 min
Mar 30, 7:05 PM EDTMesoscale DiscussionSPCAdams, Bartholomew, Blackford, Boone, Brown, Daviess and 31 more55 min
Mar 30, 12:56 PM EDTMesoscale DiscussionSPCBallard, Carlisle, Fulton, Hickman, McCracken64 min

Nearby

Mesoscale Discussions in Kentucky, 2017Mesoscale Discussions in Tennessee, 2017Mesoscale Discussions in Indiana, 2017Every mesoscale discussion in 2017

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.