Alert archive / Pennsylvania / Areal Flood Warnings in 2025

Areal Flood Warning 16, NWS Philadelphia/Mount Holly

May 16, 2025Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood warning at May 16, 2025, 9:16 PM EDT for Philadelphia County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 16, 2025, 9:16 PM EDT (01:16 UTC)
Expired: May 17, 2025, 12:10 AM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

County Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 01:17 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 warning 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 warning went out at May 16, 8:03 PM EDT, 1 hour 13 minutes earlier.

Area forecast discussion, May 16, 8:03 PM EDT, 1 hour 13 minutes before

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In the hours before

Local storm report, May 16, 7:37 PM EDT, 1 hour 39 minutes before

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<head>
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  <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.
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      <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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Local storm report, May 16, 7:39 PM EDT, 1 hour 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.
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Local storm report, May 16, 7:41 PM EDT, 1 hour 35 minutes before

<!doctype html>
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<head>
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  <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>

Local storm report, May 16, 8:01 PM EDT, 1 hour 15 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
801 PM EDT Fri May 16 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0705 PM     Tstm Wnd Dmg     2 S Bethel              38.54N 75.62W
05/16/2025                   Sussex             DE   Broadcast Media

            Extensive tree damage including downed trees
            on Rd 493. Time estimated from radar.

&&

ZC

Local storm report, May 16, 8:05 PM EDT, 1 hour 11 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
805 PM EDT Fri May 16 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0640 PM     Tstm Wnd Dmg     Royal Oak               38.71N 76.19W
05/16/2025                   Talbot             MD   Public

            Picture of a snapped tree sent via social
            media. Time estimated from radar.

&&

ZC

Local storm report, May 16, 8:42 PM EDT, 34 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
842 PM EDT Fri May 16 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     Tstm Wnd Dmg     Laurel                  38.56N 75.57W
05/16/2025                   Sussex             DE   911 Call Center

            Numerous trees and wires down across the
            west side of Laurel. Time estimated from
            radar.

&&

ZC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 1:57 AM EDT	Small Craft Advisory	PHI		64 hr
May 17, 4:26 AM EDT	Special Marine Warning	PHI		64 min
May 16, 8:46 PM EDT	Areal Flood Warning	PHI	Bucks	3 hr

Nearby

Areal Flood Warnings in Pennsylvania, 2025 Every areal flood warning in 2025

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.