Alert archive / Arkansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1036

May 16, 200325 counties in Arkansas; 14 parishes in Louisiana; Panola County, Shelby County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 16, 2003, 8:14 PM CDT for 25 counties in Arkansas; 14 parishes in Louisiana; Panola County, Shelby County, Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 16, 2003, 8:14 PM CDT (01:14 UTC)
Expired
May 16, 2003, 10:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 41 counties

Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Cleveland County, AR, Columbia County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Grant County, AR, Jackson County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Ouachita County, AR, Phillips County, AR, Prairie County, AR, Pulaski County, AR, St. Francis County, AR, Union County, AR, White County, AR, Woodruff County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Panola County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 142 km from the middle of the area, began a volume at 01:15 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.2 hours before the alert went out and 134 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, Shreveport, LA at 00:00Z on 2003-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1901 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, Shreveport, LA at 00:00Z on 2003-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 218 square meters per square second.19395878Sfc1 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
1901 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1440 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
218 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
1.4
Supercell composite
15.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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
May 16, 8:38 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Chicot, Crittenden, Cross, Desha and 10 more97 min
May 16, 9:35 PM CDTTornado WatchSPCArkansas, Ashley, Chicot, Craighead, Crittenden, Cross and 8 more6 hr
May 17, 1:54 AM CDTMesoscale DiscussionSPCChicot66 min
May 17, 4:45 AM CDTTornado WatchSPCChicot5 hr
May 16, 8:00 PM CDTSevere Thunderstorm WatchSPCSabine4 hr
May 17, 6:37 AM CDTMesoscale DiscussionSPCCaldwell, Catahoula, East Carroll, Franklin, LaSalle, Madison and 3 more83 min
May 17, 7:48 AM CDTMesoscale DiscussionSPCCatahoula, LaSalle, Tensas57 min
May 17, 9:20 AM CDTTornado WatchSPCEast Feliciana, Pointe Coupee, Saint Helena, Washington, West Feliciana6 hr
May 17, 1:50 PM CDTMesoscale DiscussionSPCEast Feliciana, Pointe Coupee, Saint Helena, Tangipahoa, Washington, West Feliciana115 min
May 17, 3:00 PM CDTTornado WatchSPCEast Baton Rouge, East Feliciana, Madison, Saint Helena, Tangipahoa, Tensas and 3 more5 hr
May 17, 6:04 PM CDTMesoscale DiscussionSPCEast Baton Rouge, East Feliciana, Saint Helena, Tangipahoa, Washington116 min
May 16, 10:22 PM CDTMesoscale DiscussionSPCBastrop, Brazos, Burleson, Caldwell, Comal, Fayette and 14 more113 min
May 16, 10:30 PM CDTSevere Thunderstorm WatchSPCAustin, Bastrop, Brazos, Burleson, Caldwell, Colorado and 15 more5 hr
May 17, 1:17 AM CDTMesoscale DiscussionSPCColorado, DeWitt, Fort Bend, Gonzales, Lavaca, Wharton and 1 more58 min

Nearby

Mesoscale Discussions in Arkansas, 2003Mesoscale Discussions in Louisiana, 2003Mesoscale Discussions in Texas, 2003Every mesoscale discussion in 2003

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.