Alert archive / Pennsylvania / Special Weather Statements in 2010

Special Weather Statement, NWS Philadelphia/Mount Holly

September 28, 20104 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 28, 2010, 1:23 PM EDT for 4 counties in Pennsylvania. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 28, 2010, 1:23 PM EDT (17:23 UTC)
Expired: Sep 28, 2010, 2:15 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly

Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 137 km from the middle of the area, began a volume at 17:26 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.4 hours before the alert went out and 202 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: 246 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 729 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 308 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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>

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 28, 11:22 AM EDT, 2 hours 1 minute earlier.

Area forecast discussion, Sep 28, 11:22 AM EDT, 2 hours 1 minute 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 28, 11:24 AM EDT, 1 hour 59 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>

In the hours before

Special weather statement, Sep 28, 10:01 AM EDT, 3 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1001 AM EDT TUE SEP 28 2010

PAZ054-055-061-062-281500-
CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA-
1001 AM EDT TUE SEP 28 2010

...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT LEHIGH...
NORTHAMPTON...CARBON AND MONROE COUNTIES...

AT 1000 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH STRONG WIND GUSTS 16 MILES SOUTHWEST OF LEHIGHTON...
MOVING NORTHEAST AT 45 MPH. THE SHOWERS WILL BE NEAR SUMMIT HILL...
EMERALD...SLATINGTON...WALNUTPORT AROUND 1015 AM...JIM THORPE...
LEHIGHTON...WEISSPORT...WEISSPORT EAST AROUND 1020 AM...BELTZVILLE
STATE PARK AND WEATHERLY AROUND 1025 AM.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE SHOWERS.

LAT...LON 4124 7513 4116 7516 4115 7509 4113 7507
      4063 7538 4084 7590 4099 7582 4101 7575
      4105 7579 4111 7576 4114 7570 4113 7564
      4123 7554 4125 7550 4126 7514

HAYES

Special weather statement, Sep 28, 10:17 AM EDT, 3 hours 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1017 AM EDT TUE SEP 28 2010

DEZ001-002-MDZ008-012-015-PAZ067-281515-
CECIL MD-CHESTER PA-KENT MD-KENT DE-NEW CASTLE DE-QUEEN ANNE'S MD-
1017 AM EDT TUE SEP 28 2010

...A SHOWER WITH STRONG WIND GUSTS WILL AFFECT KENT...CECIL...
CHESTER...QUEEN ANNE'S AND NEW CASTLE COUNTIES...

AT 1013 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SHOWER WITH STRONG WIND GUSTS 14 MILES NORTHEAST OF CENTERVILLE...
MOVING NORTH AT 50 MPH. THE SHOWER WILL BE NEAR GALENA...MASSEY...
DELANEY CORNER AROUND 1025 AM...CECILTON...SASSAFRAS AROUND 1030
AM...BOHEMIAS MILLS...WARWICK...CAYOTS...MIDDLETOWN AROUND 1035 AM
AND CHESAPEAKE CITY AROUND 1040 AM.

WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS SHOWER.

LAT...LON 3973 7611 3987 7599 3992 7601 4003 7595
      4011 7594 4026 7566 4020 7556 4013 7551
      4007 7537 3999 7545 3987 7562 3984 7559
      3980 7542 3962 7560 3959 7559 3959 7555
      3913 7585 3920 7607 3972 7585 3973 7614

HAYES

Special weather statement, Sep 28, 10:41 AM EDT, 2 hours 42 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>

Local storm report, Sep 28, 11:55 AM EDT, 1 hour 28 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>

Special weather statement, Sep 28, 12:06 PM EDT, 1 hour 17 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>

Special weather statement, Sep 28, 1:23 PM EDT, 0 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 28, 12:45 AM EDT	Special Weather Statement	PHI	Mercer	30 min
Sep 28, 7:39 AM EDT	Special Weather Statement	PHI	Hunterdon, Somerset, Warren	66 min
Sep 28, 12:06 PM EDT	Special Weather Statement	PHI	Warren	54 min
Sep 28, 3:51 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	84 min
Sep 28, 5:05 PM EDT	Special Weather Statement	PHI	Morris, Sussex	40 min
Sep 28, 8:35 AM EDT	Special Weather Statement	PHI	Berks	55 min
Sep 28, 9:26 AM EDT	Special Weather Statement	PHI	Chester	64 min
Sep 28, 9:29 AM EDT	Special Weather Statement	PHI	Berks	61 min
Sep 28, 9:59 AM EDT	Special Weather Statement	PHI	Chester, Montgomery	61 min
Sep 28, 10:01 AM EDT	Special Weather Statement	PHI	Carbon, Monroe, Northampton	59 min
Sep 28, 10:05 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh, Montgomery	55 min
Sep 28, 10:17 AM EDT	Special Weather Statement	PHI	Chester	58 min
Sep 28, 11:15 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	45 min
Sep 28, 6:13 AM EDT	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's, Talbot	47 min
Sep 28, 7:02 AM EDT	Special Weather Statement	PHI	Caroline	58 min
Sep 28, 8:26 AM EDT	Special Weather Statement	PHI	Queen Anne's, Talbot	64 min
Sep 28, 8:47 AM EDT	Special Weather Statement	PHI	Cecil, Kent	58 min
Sep 28, 9:13 AM EDT	Tornado Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	32 min
Sep 28, 9:44 AM EDT	Tornado Warning	PHI	Cecil, Kent, Queen Anne's, Talbot	31 min
Sep 28, 10:22 AM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	53 min
Sep 28, 10:41 AM EDT	Special Weather Statement	PHI	Caroline	64 min
Sep 28, 7:33 AM EDT	Special Weather Statement	PHI	Kent, New Castle	57 min

Nearby

Special Weather Statements in Pennsylvania, 2010 Every special weather statement in 2010

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.