Alert archive / New Jersey / Areal Flood Advisories in 2018

Areal Flood Advisory 206, NWS Philadelphia/Mount Holly

August 7, 2018Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 7, 2018, 2:24 PM EDT for Sussex County, New Jersey. It was in force for 78 min.

The area

The counties it named.

The facts

Issued
Aug 7, 2018, 2:24 PM EDT (18:24 UTC)
Expired
Aug 7, 2018, 3:42 PM EDT
In force
78 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 18:25 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.4 hours before the alert went out and 156 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2018-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1115 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2018-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1115 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
982 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
2 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 areal 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 areal flood advisory went out at Aug 7, 12:27 PM EDT, 1 hour 57 minutes earlier.

Area forecast discussion, Aug 7, 12:27 PM EDT, 1 hour 57 minutes before
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Hazardous weather outlook, Aug 7, 12:28 PM 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>
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In the hours before

Special weather statement, Aug 7, 2:13 PM EDT, 11 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 Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 12:19 PM EDTHeat AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more6 hr
Aug 7, 3:31 PM EDTHeat AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more26 hr
Aug 7, 4:27 PM EDTSpecial Weather StatementPHISussex48 min
Aug 7, 5:07 PM EDTSpecial Weather StatementPHISussex53 min
Aug 7, 5:46 PM EDTSpecial Weather StatementPHIMorris, Sussex59 min
Aug 7, 4:07 PM EDTSpecial Weather StatementPHIMonroe38 min
Aug 7, 4:44 PM EDTSpecial Weather StatementPHIMonroe61 min
Aug 7, 4:48 PM EDTSpecial Weather StatementPHILehigh57 min
Aug 7, 5:32 PM EDTSpecial Weather StatementPHIBerks58 min
Aug 7, 5:41 PM EDTSpecial Weather StatementPHILehigh49 min
Aug 7, 6:21 PM EDTSpecial Weather StatementPHILehigh54 min
Aug 7, 6:25 PM EDTSpecial Weather StatementPHIBerks65 min
Aug 7, 2:13 PM EDTSpecial Weather StatementPHISussex47 min

Nearby

Areal Flood Advisories in New Jersey, 2018Every areal flood advisory in 2018

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; radar from the NEXRAD Level II archive.