Alert archive / New Jersey / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

April 9, 2019Hunterdon County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Apr 9, 2019, 5:30 PM EDT for Hunterdon County, Somerset County, New Jersey. It was in force for 30 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
Apr 9, 2019, 5:30 PM EDT (21:30 UTC)
Expired
Apr 9, 2019, 6:00 PM EDT
In force
30 min
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 66 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 163 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 2019-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2019-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
714 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Apr 9, 5:00 PM EDT, 30 minutes earlier.

Area forecast discussion, Apr 9, 5:00 PM EDT, 30 minutes before
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</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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Apr 9, 3:28 PM EDT, 2 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
328 PM EDT Tue Apr 9 2019

DEZ001>004-MDZ008-012-015-019-020-NJZ010-012>027-PAZ070-071-101-102-
104-106-101930-
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Somerset-Middlesex-Western Monmouth-
Eastern Monmouth-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean-
Southeastern Burlington-Delaware-Philadelphia-Western Chester-
Eastern Chester-Eastern Montgomery-Lower Bucks-
328 PM EDT Tue Apr 9 2019

This Hazardous Weather Outlook is for central Delaware, northern
Delaware, southern Delaware, northeast Maryland, central New
Jersey, northern New Jersey, southern New Jersey and southeast
Pennsylvania.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-431-450>455-101930-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
328 PM EDT Tue Apr 9 2019

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-007>009-PAZ054-055-060>062-103-105-101930-
Sussex-Warren-Morris-Hunterdon-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Montgomery-Upper Bucks-
328 PM EDT Tue Apr 9 2019

This Hazardous Weather Outlook is for northern New Jersey,
northwest New Jersey, east central Pennsylvania, northeast
Pennsylvania and southeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

There is a chance of thunderstorms this afternoon with wind gusts
over 45 mph possible in the strongest storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Local storm report, Apr 9, 4:24 PM EDT, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
424 PM EDT TUE APR 9 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0410 PM     HAIL             NORTH WHITEHALL TWP     40.69N 75.59W
04/09/2019  M0.70 INCH       LEHIGH             PA   TRAINED SPOTTER

            DIME SIZE HAIL.

0400 PM     HAIL             ALBRIGHTSVILLE          41.01N 75.57W
04/09/2019  M0.25 INCH       CARBON             PA   PUBLIC

            PEA SIZE HAIL.

0420 PM     HAIL             CATASAUQUA              40.65N 75.47W
04/09/2019  M0.70 INCH       LEHIGH             PA   TRAINED SPOTTER

            DIME SIZE HAIL.

0420 PM     HAIL             BETHLEHEM TWP           40.66N 75.33W
04/09/2019  M0.25 INCH       NORTHAMPTON        PA   TRAINED SPOTTER

            PEA SIZE HAIL.

&&

GORSE
Local storm report, Apr 9, 4:26 PM EDT, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
426 PM EDT TUE APR 9 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0423 PM     HAIL             SCIOTA                  40.93N 75.32W
04/09/2019  M0.25 INCH       MONROE             PA   PUBLIC

            PEA SIZE HAIL.

&&

GORSE
Local storm report, Apr 9, 4:48 PM EDT, 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
448 PM EDT TUE APR 9 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0444 PM     HAIL             STILLWATER TWP          41.06N 74.86W
04/09/2019  M0.25 INCH       SUSSEX             NJ   TRAINED SPOTTER

            PEA SIZE HAIL.

&&

GORSE
Special weather statement, Apr 9, 4:59 PM EDT, 31 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
459 PM EDT TUE APR 9 2019

NJZ007-009-PAZ060>062-103-105-092130-
Hunterdon-Warren-Upper Bucks-Lehigh-Western
Montgomery-Northampton-Berks-
459 PM EDT TUE APR 9 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN HUNTERDON...
SOUTHWESTERN WARREN...NORTHEASTERN BERKS...NORTHWESTERN MONTGOMERY...
SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS AND SOUTH CENTRAL
NORTHAMPTON COUNTIES...

At 457 PM EDT, a strong thunderstorm was located over Topton, or 10
miles southwest of Allentown, moving east at 50 mph.

Winds up to 40 mph and pea size hail are possible with this storm.

Locations impacted include...
Allentown, Bethlehem, Emmaus, Quakertown, Byram, Bedminster,
Hellertown, Tinicum, East Greenville, Alpha, Topton, Ferndale,
Frenchtown, Milford, Bally, Bloomsbury, Riegelsville, Pleasant
Valley, Revere and Zionsville.

LAT...LON 4059 7575 4066 7504 4041 7503 4041 7504
      4039 7506 4040 7575
TIME...MOT...LOC 2057Z 268DEG 45KT 4051 7565

PO
Local storm report, Apr 9, 5:23 PM EDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
523 PM EDT TUE APR 9 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0508 PM     HAIL             ZIONSVILLE              40.48N 75.51W
04/09/2019  M0.25 INCH       LEHIGH             PA   PUBLIC

            PEA SIZE HAIL.

0505 PM     HAIL             EMMAUS                  40.53N 75.49W
04/09/2019  M0.70 INCH       LEHIGH             PA   TRAINED SPOTTER

            DIME SIZE HAIL.

&&

GORSE
Special weather statement, Apr 9, 5:30 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
530 PM EDT TUE APR 9 2019

NJZ008>010-PAZ105-106-092200-
Morris-Hunterdon-Somerset-Lower Bucks-Upper Bucks-
530 PM EDT TUE APR 9 2019

...STRONG THUNDERSTORMS WILL AFFECT SOUTH CENTRAL MORRIS...
HUNTERDON...SOMERSET AND NORTH CENTRAL BUCKS COUNTIES...

At 529 PM EDT, strong thunderstorms were located over Ottsville, or
14 miles south of Easton, moving east at 60 mph.

Winds up to 40 mph and pea size hail are possible with this storm.
Go indoors if threatening weather approaches.

Locations impacted include...
New Brunswick, Somerville, Somerset, Bridgewater, Middlesex, Bound
Brook, Manville, Byram, Bedminster, Mendham, Flemington, Tinicum,
High Bridge, Clinton, Peapack And Gladstone, Dublin, Ferndale,
Frenchtown, Lebanon and Milford.

LAT...LON 4043 7456 4041 7474 4042 7475 4042 7480
      4040 7481 4036 7526 4055 7532 4078 7457
      4059 7449 4057 7453 4049 7446
TIME...MOT...LOC 2129Z 260DEG 51KT 4048 7518

PO

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 2:06 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren39 min
Apr 9, 4:07 PM EDTSpecial Weather StatementPHIWarren23 min
Apr 9, 6:43 PM EDTSpecial Weather StatementPHICamden, Gloucester32 min
Apr 9, 3:21 PM EDTSpecial Weather StatementPHIBerks, Lehigh39 min
Apr 9, 4:01 PM EDTSpecial Weather StatementPHIMonroe44 min
Apr 9, 4:59 PM EDTSpecial Weather StatementPHILehigh31 min

Nearby

Special Weather Statements in New Jersey, 2019Every 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.