Alert archive / Maryland / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 178, NWS Baltimore/Washington

August 9, 2013Calvert County, Charles County, Saint Mary's County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 9, 2013, 7:27 PM EDT for Calvert County, Charles County, Saint Mary's County, Maryland. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 9, 2013, 7:27 PM EDT (23:27 UTC)
Expired: Aug 9, 2013, 8:30 PM EDT
In force: 63 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon

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

The radar

The Sterling radar (KLWX), 94 km from the middle of the area, began a volume at 23:29 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 severe thunderstorm 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 severe thunderstorm warning went out at Aug 9, 2:37 PM EDT, 4 hours 50 minutes earlier.

Area forecast discussion, Aug 9, 2:37 PM EDT, 4 hours 50 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, Aug 9, 4:44 PM EDT, 2 hours 43 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
Aug 9, 2:20 PM EDT	Special Marine Warning	LWX		85 min
Aug 9, 3:48 PM EDT	Special Marine Warning	LWX		117 min
Aug 9, 4:37 PM EDT	Special Marine Warning	LWX		83 min
Aug 9, 5:34 PM EDT	Special Marine Warning	LWX		86 min
Aug 9, 5:37 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Prince William	38 min
Aug 9, 5:42 PM EDT	Special Marine Warning	LWX		93 min
Aug 9, 6:48 PM EDT	Special Marine Warning	LWX		117 min
Aug 9, 7:06 PM EDT	Special Marine Warning	LWX		84 min
Aug 9, 7:14 PM EDT	Severe Thunderstorm Warning	LWX	King George	46 min
Aug 9, 7:29 PM EDT	Special Marine Warning	LWX		91 min
Aug 9, 4:03 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	5 hr
Aug 9, 6:51 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Saint Mary's	39 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2013 Every severe thunderstorm warning in 2013

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.