Alert archive / Pennsylvania / Areal Flood Advisories in 2020

Areal Flood Advisory 180, NWS Philadelphia/Mount Holly

September 29, 2020Delaware County, Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this areal flood advisory at Sep 29, 2020, 3:26 PM EDT for Delaware County, Pennsylvania; New Castle County, Delaware. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Sep 29, 2020, 3:26 PM EDT (19:26 UTC)
Expired: Sep 29, 2020, 6:10 PM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties New Castle County, DE, Delaware County, PA

The radar

The Philadelphia radar (KDIX), 97 km from the middle of the area, began a volume at 19:28 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 areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Sep 29, 1:41 PM EDT, 1 hour 45 minutes earlier.

Area forecast discussion, Sep 29, 1:41 PM EDT, 1 hour 45 minutes before

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Hazardous weather outlook, Sep 29, 3:54 AM EDT, 11 hours 32 minutes before

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<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.
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The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 28, 9:26 PM EDT	Small Craft Advisory	PHI		60 hr
Sep 29, 4:02 PM EDT	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	3 hr
Sep 29, 6:20 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr

Nearby

Areal Flood Advisories in Pennsylvania, 2020 Areal Flood Advisories in Delaware, 2020 Every areal flood advisory 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.