Alert archive / Louisiana / Flash Flood Watches in 2020

Flash Flood Watch 4, NWS Shreveport, LA

April 21, 20209 counties in Texas; 17 parishes in Louisiana; Columbia County, Lafayette County, Union County, Arkansas

NWS Shreveport, LA issued this flash flood watch at Apr 21, 2020, 2:58 PM CDT for 9 counties in Texas; 17 parishes in Louisiana; Columbia County, Lafayette County, Union County, Arkansas. It took effect at Apr 22, 2020, 2:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Apr 21, 2020, 2:58 PM CDT (19:58 UTC)
In effect from: Apr 22, 2020, 2:00 PM CDT
Expired: Apr 23, 2020, 2:04 AM CDT
In force: 12 hr
Issued by: NWS Shreveport, LA
Flood severity: None

All 29 counties

Columbia County, AR, Lafayette County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle 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, Angelina County, TX, Cherokee County, TX, Harrison County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 48 km from the middle of the area, began a volume at 20:01 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.

What forecasters said that day

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

NWS Shreveport, LA wrote its last area forecast discussion before this flash flood watch went out at Apr 21, 1:04 PM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Apr 21, 1:04 PM CDT, 1 hour 54 minutes before

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Hazardous weather outlook, Apr 21, 11:16 AM CDT, 3 hours 42 minutes before

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</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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Local storm report, Apr 21, 10:00 AM CDT, 4 hours 58 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>
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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 21, 6:11 AM CDT	Special Weather Statement	SHV	Harrison	49 min

Nearby

Flash Flood Watches in Louisiana, 2020 Flash Flood Watches in Texas, 2020 Flash Flood Watches in Arkansas, 2020 Every flash flood watch in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.