Alert archive / Maryland / Coastal Flood Advisories in 2017

Coastal Flood Advisory 5, NWS Philadelphia/Mount Holly

April 7, 20175 counties in Maryland

NWS Philadelphia/Mount Holly issued this coastal flood advisory at Apr 7, 2017, 12:38 AM EDT for 5 counties in Maryland. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Apr 7, 2017, 12:38 AM EDT (04:38 UTC)
Expired: Apr 7, 2017, 5:36 AM EDT
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 4.6 hours before the alert went out and 140 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 25 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1348 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this coastal 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 coastal flood advisory went out at Apr 6, 6:38 PM EDT, 6 hours earlier.

Area forecast discussion, Apr 6, 6:38 PM EDT, 6 hours before

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Hazardous weather outlook, Apr 6, 6:39 PM EDT, 5 hours 59 minutes before

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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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 Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 7, 3:46 AM EDT	Gale Warning	PHI		22 hr

Nearby

Coastal Flood Advisories in Maryland, 2017 Every coastal flood 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; the sounding from the Mesonet's radiosonde archive.