Alert archive / New Jersey / Areal Flood Advisories in 2013

Areal Flood Advisory 66, NWS Philadelphia/Mount Holly

June 28, 2013Mercer County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 28, 2013, 1:01 AM EDT for Mercer County, Somerset County, New Jersey. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Jun 28, 2013, 1:01 AM EDT (05:01 UTC)
Expired
Jun 28, 2013, 5:39 AM EDT
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Mercer County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 05:04 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, 5.0 hours before the alert went out and 159 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 00:00Z on 2013-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 349 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 00:00Z on 2013-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
349 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
637 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.8

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 Jun 28, 12:01 AM EDT, 1 hour earlier.

Area forecast discussion, Jun 28, 12:01 AM EDT, 1 hour before
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Hazardous weather outlook, Jun 28, 12:03 AM EDT, 58 minutes before
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In the hours before

Special weather statement, Jun 27, 7:19 PM EDT, 5 hours 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
719 PM EDT THU JUN 27 2013

NJZ007>010-PAZ062-280015-
HUNTERDON NJ-MORRIS NJ-NORTHAMPTON PA-SOMERSET NJ-WARREN NJ-
719 PM EDT THU JUN 27 2013

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT HUNTERDON...
NORTHEASTERN NORTHAMPTON...SOMERSET...SOUTHERN MORRIS AND WARREN
COUNTIES...

AT 717 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
RIEGELSVILLE TO HOPEWELL...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. THESE STORMS WILL BE NEAR PHILLIPSBURG AROUND 730 PM...
ROXBURG AROUND 740 PM...BELVIDERE AROUND 750 PM...HOPE AROUND 800
PM...BLAIRSTOWN AROUND 810 PM AND SUCCASUNNA AROUND 820 PM.

LAT...LON 4101 7487 4091 7477 4092 7473 4090 7470
      4092 7466 4080 7441 4040 7473 4042 7475
      4042 7477 4069 7528 4106 7498

FORECASTER: AMC
Special weather statement, Jun 27, 8:06 PM EDT, 4 hours 55 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
806 PM EDT THU JUN 27 2013

NJZ012-013-015-018>020-022-026-027-PAZ106-280100-
ATLANTIC NJ-CAMDEN NJ-COASTAL OCEAN NJ-LOWER BUCKS PA-MERCER NJ-
MIDDLESEX NJ-NORTHWESTERN BURLINGTON NJ-OCEAN NJ-
SOUTHEASTERN BURLINGTON NJ-WESTERN MONMOUTH NJ-
806 PM EDT THU JUN 27 2013

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT BURLINGTON...CENTRAL
ATLANTIC...OCEAN...SOUTH CENTRAL MIDDLESEX...SOUTHEASTERN BUCKS...
SOUTHEASTERN CAMDEN...SOUTHEASTERN MERCER AND SOUTHWESTERN MONMOUTH
COUNTIES...

AT 805 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
WILLINGBORO TO MAYS LANDING...MOVING NORTHEAST AT 35 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
THESE STORMS WILL BE NEAR FLORENCE AROUND 820 PM...CROSSWICKS AROUND
830 PM...WINDSOR AROUND 840 PM...CONCORDIA AROUND 850 PM AND
MANALAPAN AROUND 900 PM.

LAT...LON 3971 7412 3930 7478 4004 7497 4039 7440
      3987 7411 3978 7418 3972 7415 3977 7415
      3984 7409 3977 7408

FORECASTER: AMC
Special weather statement, Jun 27, 8:18 PM EDT, 4 hours 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
818 PM EDT THU JUN 27 2013

NJZ001-007>010-012-015-280130-
HUNTERDON NJ-MERCER NJ-MIDDLESEX NJ-MORRIS NJ-SOMERSET NJ-SUSSEX NJ-
WARREN NJ-
818 PM EDT THU JUN 27 2013

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL MERCER...
EASTERN WARREN...MORRIS...NORTHEASTERN HUNTERDON...SOMERSET...
SOUTHERN SUSSEX AND WESTERN MIDDLESEX COUNTIES...

AT 814 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM GREAT
MEADOWS-VIENNA TO BRIDGEWATER TO LAWRENCEVILLE...MOVING NORTHEAST AT
20 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
THESE STORMS WILL BE NEAR BLAIRSTOWN...PRINCETON NORTH...PRINCETON
JUNCTION...AND LONG VALLEY AROUND 830 PM...MONMOUTH JUNCTION...
HEATHCOTE...BUDD LAKE...AND BERNARDSVILLE AROUND 840 PM...SUCCASUNNA
AND MILLSTONE AROUND 850 PM.

LAT...LON 4098 7440 4071 7439 4067 7445 4067 7443
      4067 7439 4060 7444 4060 7439 4041 7439
      4021 7473 4054 7472 4085 7506 4089 7507
      4122 7484

FORECASTER: AMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:04 PM EDTFlash Flood WarningPHIHunterdon, Mercer, Somerset4 hr
Jun 27, 8:06 PM EDTSpecial Weather StatementPHIAtlantic, Burlington, Ocean54 min
Jun 27, 8:18 PM EDTSpecial Weather StatementPHIMercer, Middlesex, Morris, Somerset, Sussex, Warren72 min
Jun 27, 10:00 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more3 hr
Jun 27, 10:48 PM EDTAreal Flood WarningPHISomerset4 hr
Jun 28, 4:23 PM EDTSpecial Weather StatementPHICamden, Gloucester52 min
Jun 28, 4:46 PM EDTSpecial Marine WarningPHI44 min
Jun 28, 4:55 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester65 min
Jun 28, 5:49 PM EDTFlash Flood WarningPHICamden, Gloucester, Salem4 hr
Jun 28, 5:57 PM EDTSevere Thunderstorm WarningPHIBurlington48 min
Jun 28, 6:13 PM EDTSpecial Weather StatementPHIOcean62 min
Jun 27, 8:50 PM EDTAreal Flood AdvisoryPHICarbon3 hr
Jun 27, 10:04 PM EDTRiver Flood WarningPHIChester6 hr
Jun 28, 3:19 PM EDTSevere Thunderstorm WarningPHIChester41 min
Jun 28, 3:33 PM EDTAreal Flood AdvisoryPHIChester, Delaware117 min
Jun 28, 6:04 PM EDTSpecial Weather StatementPHICarbon56 min
Jun 28, 6:21 PM EDTFlash Flood WarningPHICarbon4 hr
Jun 28, 6:43 PM EDTFlash Flood WarningPHIMonroe4 hr
Jun 28, 7:32 PM EDTAreal Flood AdvisoryPHILehigh, Northampton3 hr
Jun 28, 4:20 PM EDTSevere Thunderstorm WarningPHINew Castle55 min
Jun 28, 4:27 PM EDTTornado WarningPHINew Castle33 min
Jun 28, 5:09 PM EDTFlash Flood WarningPHINew Castle11 hr
Jun 28, 6:09 PM EDTSevere Thunderstorm WarningPHISussex96 min
Jun 28, 6:48 PM EDTRiver Flood WarningPHINew Castle9 hr
Jun 28, 6:48 PM EDTRiver Flood WarningPHINew Castle8 hr

Nearby

Areal Flood Advisories in New Jersey, 2013Every areal flood advisory in 2013

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.