Alert archive / Maryland / Flash Flood Warnings in 2023

Flash Flood Warning 22, NWS Baltimore/Washington

July 16, 20234 counties in Maryland

NWS Baltimore/Washington issued this flash flood warning at Jul 16, 2023, 11:55 AM EDT for 4 counties in Maryland. 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: Jul 16, 2023, 11:55 AM EDT (15:55 UTC)
Expired: Jul 16, 2023, 3:12 PM EDT
In force: 3 hr
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Flood severity: None

Counties Calvert County, MD, Charles County, MD, Prince George's County, MD, Saint Mary's County, MD

The radar

The Sterling radar (KLWX), 83 km from the middle of the area, began a volume at 15:54 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 warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at Jul 16, 9:59 AM EDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jul 16, 9:59 AM EDT, 1 hour 56 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, Jul 16, 10:33 AM EDT, 1 hour 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 Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 15, 8:28 PM EDT	Special Marine Warning	LWX		92 min
Jul 15, 8:44 PM EDT	Areal Flood Warning	LWX	Albemarle, Augusta, Nelson, City of Charlottesville, City of Waynesboro	8 hr
Jul 15, 10:12 PM EDT	Areal Flood Warning	LWX	Fairfax, City of Fairfax	4 hr
Jul 16, 1:03 AM EDT	Special Marine Warning	LWX		36 min
Jul 16, 1:13 AM EDT	Special Marine Warning	LWX		32 min
Jul 16, 1:20 PM EDT	Special Marine Warning	LWX		40 min
Jul 16, 2:39 PM EDT	Special Marine Warning	LWX		55 min
Jul 15, 8:01 PM EDT	Areal Flood Warning	LWX	Allegany, Garrett	98 min
Jul 15, 8:07 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	38 min
Jul 15, 8:15 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	45 min
Jul 15, 8:31 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	44 min
Jul 16, 3:56 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	3 hr

Nearby

Flash Flood Warnings in Maryland, 2023 Every flash flood warning in 2023

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.