Alert archive / New Jersey / Coastal Flood Watches in 2011

Coastal Flood Watch 4, NWS Philadelphia/Mount Holly

September 8, 2011Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this coastal flood watch at Sep 8, 2011, 5:30 AM EDT for Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It took effect at Sep 8, 2011, 10:00 PM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Sep 8, 2011, 5:30 AM EDT (09:30 UTC)
In effect from: Sep 8, 2011, 10:00 PM EDT
Expired: Sep 8, 2011, 11:42 AM EDT
In force
Issued by: NWS Philadelphia/Mount Holly

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 09:30 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 00:00Z, 9.5 hours before the alert went out and 217 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: 4 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 439 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 176 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 watch 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 watch went out at Sep 8, 4:43 AM EDT, 47 minutes earlier.

Area forecast discussion, Sep 8, 4:43 AM EDT, 47 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, Sep 8, 5:26 AM EDT, 4 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.

Issued	Product	Office	Counties	Lasted
Sep 7, 9:42 PM EDT	River Flood Warning	PHI	Morris	42 hr
Sep 7, 11:32 PM EDT	Areal Flood Advisory	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 4 more	3 hr
Sep 8, 1:25 AM EDT	Flash Flood Warning	PHI	Cumberland, Gloucester, Salem	7 hr
Sep 8, 2:26 AM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer	6 hr
Sep 8, 3:15 AM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer, Morris, Somerset, Sussex, Warren	6 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Morris, Somerset	7 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Bergen, Morris, Passaic	36 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Somerset	18 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Middlesex, Somerset	36 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Mercer	18 hr
Sep 8, 4:01 AM EDT	River Flood Warning	PHI	Burlington	15 hr
Sep 8, 4:58 AM EDT	Flash Flood Warning	PHI	Middlesex, Monmouth, Ocean	3 hr
Sep 8, 5:30 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester	8 hr
Sep 8, 5:30 AM EDT	Coastal Flood Advisory	PHI	Cumberland, Salem	17 hr
Sep 8, 8:36 AM EDT	Areal Flood Warning	PHI	Burlington, Camden, Cumberland, Gloucester, Hunterdon, Mercer and 1 more	16 hr
Sep 8, 9:53 AM EDT	Areal Flood Warning	PHI	Hunterdon, Mercer, Morris, Somerset	24 hr
Sep 8, 9:58 AM EDT	Areal Flood Warning	PHI	Morris	7 days
Sep 8, 11:12 AM EDT	River Flood Warning	PHI	Sussex, Warren	8 hr
Sep 8, 11:42 AM EDT	Coastal Flood Warning	PHI	Burlington, Camden, Gloucester	15 hr
Sep 8, 12:36 PM EDT	Flash Flood Warning	PHI	Cumberland, Salem	2 hr
Sep 8, 1:15 PM EDT	Special Weather Statement	PHI	Cumberland	60 min
Sep 8, 5:08 PM EDT	River Flood Warning	PHI	Morris, Somerset	16 hr
Sep 7, 8:11 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Sep 7, 8:24 PM EDT	Areal Flood Warning	PHI	Montgomery	6 hr
Sep 7, 9:32 PM EDT	Special Weather Statement	PHI	Berks	118 min
Sep 7, 9:38 PM EDT	River Flood Warning	PHI	Montgomery	13 hr
Sep 8, 12:13 AM EDT	Areal Flood Warning	PHI	Berks	24 hr
Sep 8, 3:41 AM EDT	River Flood Warning	PHI	Lehigh, Northampton	7 hr
Sep 8, 3:49 AM EDT	River Flood Warning	PHI	Monroe	7 hr
Sep 8, 5:48 AM EDT	River Flood Warning	PHI	Monroe	34 hr
Sep 8, 9:32 AM EDT	Areal Flood Warning	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Montgomery	15 hr
Sep 8, 3:14 PM EDT	River Flood Warning	PHI	Lehigh, Northampton	13 hr
Sep 8, 9:23 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	4 hr
Sep 8, 1:51 PM EDT	Areal Flood Advisory	PHI	Caroline, Queen Anne's, Talbot	6 hr
Sep 8, 3:53 PM EDT	Flash Flood Warning	PHI	Caroline	4 hr
Sep 8, 4:27 PM EDT	Special Weather Statement	PHI	Caroline	63 min
Sep 8, 7:41 PM EDT	Areal Flood Warning	PHI	Caroline	14 hr

Nearby

Coastal Flood Watches in New Jersey, 2011 Coastal Flood Watches in Pennsylvania, 2011 Every coastal flood watch in 2011

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.