Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

May 9, 2021Richland Parish, Louisiana

NWS Jackson, MS issued this special weather statement at May 9, 2021, 1:48 PM CDT for Richland Parish, Louisiana. It was in force for 27 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: May 9, 2021, 1:48 PM CDT (18:48 UTC)
Expired: May 9, 2021, 2:15 PM CDT
In force: 27 min
Issued by: NWS Jackson, MS

County Richland Parish, LA

The radar

The Ft Polk radar (KPOE), 163 km from the middle of the area, began a volume at 18:47 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

Shreveport, LA (KSHV), launched 12:00Z, 6.8 hours before the alert went out and 172 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: 853 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 639 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 490 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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>

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 Jackson, MS wrote its last area forecast discussion before this special weather statement went out at May 9, 1:11 PM CDT, 37 minutes earlier.

Area forecast discussion, May 9, 1:11 PM CDT, 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, May 9, 5:57 AM CDT, 7 hours 51 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>

In the hours before

Special weather statement, May 9, 1:48 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Jackson MS
148 PM CDT Sun May 9 2021

LAZ015-091915-
Richland LA-
148 PM CDT Sun May 9 2021

...A STRONG THUNDERSTORM WILL AFFECT WESTERN RICHLAND PARISH UNTIL
215 PM CDT...

At 148 PM CDT, Meteorologists were tracking a strong thunderstorm
near Buckner, or 12 miles west of Mangham, moving east at 40 mph.

Winds in excess of 40 mph will be possible with this storm.

This strong thunderstorm will be near...
  Alto around 200 PM CDT.
  Mangham, Start and Archibald around 205 PM CDT.
  Rayville around 210 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern Louisiana.

LAT...LON 3233 9201 3236 9201 3242 9198 3245 9195
      3259 9165 3233 9174 3233 9176 3224 9177
      3222 9180 3222 9198 3225 9200 3225 9199
      3226 9200 3227 9199 3228 9202 3229 9203
TIME...MOT...LOC 1848Z 249DEG 33KT 3233 9198

DB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 3:01 PM CDT	Special Weather Statement	JAN	Warren	44 min
May 9, 3:28 PM CDT	Special Weather Statement	JAN	Warren	47 min
May 9, 4:24 PM CDT	Special Weather Statement	JAN	Rankin	36 min
May 9, 2:29 PM CDT	Special Weather Statement	JAN	Madison, Tensas	46 min
May 9, 6:39 PM CDT	Special Weather Statement	JAN	Morehouse	51 min

Nearby

Special Weather Statements in Louisiana, 2021 Every 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.