Alert archive / Pennsylvania / Areal Flood Advisories in 2020

Areal Flood Advisory 45, NWS Philadelphia/Mount Holly

June 21, 2020Montgomery County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 21, 2020, 6:44 PM EDT for Montgomery County, Philadelphia County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jun 21, 2020, 6:44 PM EDT (22:44 UTC)
Expired: Jun 21, 2020, 8:57 PM EDT
In force: 2 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 22:47 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.

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 Jun 21, 3:52 PM EDT, 2 hours 52 minutes earlier.

Area forecast discussion, Jun 21, 3:52 PM EDT, 2 hours 52 minutes before

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Hazardous weather outlook, Jun 21, 3:22 PM EDT, 3 hours 22 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 4:14 AM EDT	Dense Fog Advisory	PHI	Atlantic, Burlington, Cape May, Hunterdon, Mercer, Middlesex and 6 more	5 hr
Jun 21, 4:16 AM EDT	Marine Dense Fog Advisory	PHI		10 hr
Jun 21, 5:52 PM EDT	Areal Flood Advisory	PHI	Camden	119 min
Jun 21, 3:38 PM EDT	Areal Flood Advisory	PHI	Sussex	3 hr

Nearby

Areal Flood Advisories in Pennsylvania, 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.