Alert archive / New Jersey / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

May 23, 20194 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at May 23, 2019, 3:36 PM EDT for 4 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 24 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: May 23, 2019, 3:36 PM EDT (19:36 UTC)
Expired: May 23, 2019, 4:00 PM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly

Counties Camden County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 19:38 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

Albany, NY (KALY), launched 12:00Z, 7.6 hours before the alert went out and 251 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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 May 23, 3:35 PM EDT, 1 minute earlier.

Area forecast discussion, May 23, 3:35 PM EDT, 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, May 23, 3:26 PM EDT, 10 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

Local storm report, May 23, 11:06 AM EDT, 4 hours 30 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, May 23, 2:11 PM EDT, 1 hour 25 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
211 PM EDT Thu May 23 2019

PAZ054-055-061-062-231845-
Lehigh-Monroe-Northampton-Carbon-
211 PM EDT Thu May 23 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN LEHIGH...
CARBON...MONROE AND WESTERN NORTHAMPTON COUNTIES...

At 211 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Moscow to near Freeland to Coaldale.
Movement was east at 65 mph.

Wind gusts up to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Lehighton, Mount Pocono, Tobyhanna, Palmerton, Jim Thorpe,
Slatington, Nesquehoning, Weatherly, Walnutport, Pocono Pines, Lake
Harmony, Skytop, Tannersville, Long Pond, Kresgeville, Sun Valley,
Reeders, Beltzville State Park, McMichael and Canadensis.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Mount Holly NJ.

LAT...LON 4115 7515 4114 7509 4113 7506 4070 7566
      4070 7582 4074 7576 4083 7590 4091 7599
      4101 7573 4103 7574 4105 7577 4109 7577
      4113 7569 4112 7564 4123 7554 4125 7513
TIME...MOT...LOC 1811Z 258DEG 59KT 4128 7558 4104 7585 4075 7619

MPS

Special weather statement, May 23, 2:24 PM EDT, 1 hour 12 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
224 PM EDT Thu May 23 2019

PAZ054-055-060>062-231900-
Lehigh-Monroe-Northampton-Berks-Carbon-
224 PM EDT Thu May 23 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT BERKS...LEHIGH...
SOUTHEASTERN CARBON...SOUTHWESTERN MONROE AND NORTHWESTERN
NORTHAMPTON COUNTIES...

At 224 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near New Mahoning to Myerstown. Movement
was east at 60 mph.

Wind gusts up to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Allentown, Reading, Lehighton, Wyomissing, Northampton, Palmerton,
Kutztown, Jim Thorpe, Hamburg, Slatington, Fleetwood, Sinking Spring,
Laureldale, Pen Argyl, Womelsdorf, Wind Gap, Bath, Wernersville,
Newmanstown and Walnutport.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Mount Holly NJ.

A severe thunderstorm watch remains in effect until 800 PM EDT for
eastern Pennsylvania.

LAT...LON 4054 7617 4058 7605 4057 7602 4065 7598
      4070 7583 4074 7576 4082 7589 4084 7586
      4098 7514 4026 7587 4027 7608 4036 7621
      4041 7630
TIME...MOT...LOC 1824Z 264DEG 52KT 4080 7588 4035 7633

MPS

Special weather statement, May 23, 2:46 PM EDT, 50 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
246 PM EDT Thu May 23 2019

NJZ001-007>009-PAZ055-061-062-105-231915-
Morris-Hunterdon-Sussex-Warren-Upper Bucks-Lehigh-Monroe-Northampton-
246 PM EDT Thu May 23 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL MORRIS...
NORTHERN HUNTERDON...SUSSEX...WARREN...NORTHEASTERN LEHIGH...
NORTHWESTERN BUCKS...EAST CENTRAL MONROE AND NORTHAMPTON COUNTIES...

At 245 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Bushkill to Pen Argyl to near
Claussville. Movement was east at 60 mph.

Wind gusts up to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Allentown, Easton, Port Jervis, Newton, Montague, Bethlehem, Dover,
Hopatcong, Forks, Emmaus, Northampton, East Stroudsburg,
Hackettstown, Wilson, Wharton, Washington, Rockaway, Blairstown,
Hellertown and Nazareth.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Mount Holly NJ.

A severe thunderstorm watch remains in effect until 800 PM EDT for
eastern Pennsylvania.

LAT...LON 4130 7457 4120 7437 4109 7450 4104 7450
      4105 7445 4103 7443 4080 7458 4046 7519
      4054 7568 4059 7575 4086 7526 4114 7508
      4108 7503 4116 7490 4128 7484 4134 7476
TIME...MOT...LOC 1845Z 275DEG 59KT 4119 7501 4086 7525 4061 7572

MPS

Special weather statement, May 23, 3:08 PM EDT, 28 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
308 PM EDT Thu May 23 2019

DEZ001-NJZ009-PAZ061-070-071-101>106-231945-
New Castle-Hunterdon-Lower Bucks-Upper Bucks-Lehigh-Eastern
Montgomery-Western Montgomery-Delaware-Western Chester-Eastern
Chester-Philadelphia-
308 PM EDT Thu May 23 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN NEW CASTLE...
SOUTHWESTERN HUNTERDON...MONTGOMERY...SOUTHEASTERN LEHIGH...BUCKS...
CHESTER...NORTHWESTERN PHILADELPHIA AND DELAWARE COUNTIES...

At 308 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Zionsville to near Pughtown to near West
Grove. Movement was east at 55 mph.

Wind gusts up to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Philadelphia, Wilmington, West Chester, Norristown, Chester,
Pottstown, Phoenixville, Lansdale, West Norriton, East Norriton,
Coatesville, Emmaus, Westtown, Quakertown, Perkasie, Doylestown,
Byram, Carneys Point, Downingtown and Conshohocken.

If outdoors, consider seeking shelter inside a building.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Mount Holly NJ.

A severe thunderstorm watch remains in effect until 800 PM EDT for
eastern and southeastern Pennsylvania.

LAT...LON 4017 7567 4037 7560 4044 7553 4047 7556
      4053 7554 4055 7536 4054 7533 4056 7530
      4061 7492 4026 7503 3972 7548 3976 7598
TIME...MOT...LOC 1908Z 257DEG 49KT 4048 7552 4018 7563 3983 7589

MPS

Special weather statement, May 23, 3:36 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Mount Holly NJ
336 PM EDT Thu May 23 2019

DEZ001-NJZ008>010-012-013-015-017>019-PAZ070-071-104-106-232000-
New Castle-Camden-Mercer-Morris-Hunterdon-Northwestern
Burlington-Western Monmouth-Somerset-Middlesex-Gloucester-Lower
Bucks-Eastern Montgomery-Philadelphia-Delaware-
336 PM EDT Thu May 23 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN NEW
CASTLE...CAMDEN...MERCER...SOMERSET...SOUTHEASTERN MORRIS...
SOUTHEASTERN HUNTERDON...NORTHERN GLOUCESTER...NORTHWESTERN
BURLINGTON...SOUTHWESTERN MONMOUTH...MIDDLESEX...SOUTHEASTERN
MONTGOMERY...SOUTHEASTERN BUCKS...PHILADELPHIA AND EASTERN DELAWARE
COUNTIES...

At 336 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Peapack And Gladstone to near Richboro to
Chelsea. Movement was east at 55 mph.

Wind gusts up to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Philadelphia, Trenton, Camden, New Brunswick, Perth Amboy,
Morristown, Somerville, Gloucester City, Somerset, Edison, Cherry
Hill, Old Bridge, Bensalem, East Brunswick, Evesham, Bridgewater,
South Brunswick, Sayreville, Mount Laurel and North Brunswick.

If outdoors, consider seeking shelter inside a building.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in Mount Holly NJ.

LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
      4046 7424 4023 7439 3969 7498 3981 7555
      4028 7504 4080 7468 4080 7436 4074 7437
      4067 7446 4066 7445 4066 7441 4065 7440
      4060 7446 4060 7421
TIME...MOT...LOC 1936Z 274DEG 50KT 4074 7467 4028 7499 3987 7544

MPS

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 23, 3:24 AM EDT	Small Craft Advisory	PHI		28 hr
May 23, 2:46 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	29 min
May 23, 5:40 PM EDT	Special Marine Warning	PHI		29 min
May 23, 2:11 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	34 min
May 23, 2:24 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	36 min
May 23, 3:08 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Delaware, Montgomery	37 min
May 23, 5:01 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	37 min
May 23, 5:37 PM EDT	Special Weather Statement	PHI	Sussex	38 min
May 23, 3:53 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	52 min
May 23, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	63 min

Nearby

Special Weather Statements in New Jersey, 2019 Special Weather Statements in Pennsylvania, 2019 Every special weather statement in 2019

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.