Alert archive / Maryland / Winter Weather Advisories in 2017

Winter Weather Advisory 21, NWS Baltimore/Washington

December 9, 2017Baltimore County, Harford County, Maryland

NWS Baltimore/Washington issued this winter weather advisory at Dec 9, 2017, 3:26 AM EST for Baltimore County, Harford County, Maryland. It took effect at Dec 9, 2017, 7:00 AM EST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2017, 3:26 AM EST (08:26 UTC)
In effect from: Dec 9, 2017, 7:00 AM EST
Expired: Dec 9, 2017, 9:00 PM EST
In force: 14 hr
Issued by: NWS Baltimore/Washington

Counties Baltimore County, MD, Harford County, MD

The radar

The Sterling radar (KLWX), 105 km from the middle of the area, began a volume at 08:27 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 winter weather advisory 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 winter weather advisory went out at Dec 8, 3:00 PM EST, 12 hours 26 minutes earlier.

Area forecast discussion, Dec 8, 3:00 PM EST, 12 hours 26 minutes before

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Hazardous weather outlook, Dec 8, 3:50 PM EST, 11 hours 36 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 Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 9, 12:38 AM EST	Small Craft Advisory	LWX		15 hr

Nearby

Winter Weather Advisories in Maryland, 2017 Every winter weather advisory in 2017

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.