Alert archive / New Jersey / Areal Flood Advisories in 2015

Areal Flood Advisory 73, NWS Philadelphia/Mount Holly

June 21, 2015Atlantic County, Cape May County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 21, 2015, 7:21 AM EDT for Atlantic County, Cape May County, Ocean County, New Jersey. It was in force for 114 min.

The area

The counties it named.

The facts

Issued
Jun 21, 2015, 7:21 AM EDT (11:21 UTC)
Expired
Jun 21, 2015, 9:15 AM EDT
In force
114 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Cape May County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 11:24 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 11.4 hours before the alert went out and 186 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, Wallops Is Stn, VA at 00:00Z on 2015-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 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, Wallops Is Stn, VA at 00:00Z on 2015-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 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
261 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 21, 6:25 AM EDT, 56 minutes earlier.

Area forecast discussion, Jun 21, 6:25 AM EDT, 56 minutes before
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Hazardous weather outlook, Jun 21, 6:23 AM EDT, 58 minutes before
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In the hours before

Special weather statement, Jun 21, 1:33 AM EDT, 5 hours 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
133 AM EDT SUN JUN 21 2015

NJZ021>025-210600-
CAPE MAY-ATLANTIC COASTAL CAPE MAY-ATLANTIC-COASTAL
ATLANTIC-CUMBERLAND-
133 AM EDT SUN JUN 21 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL ATLANTIC...CAPE
MAY AND SOUTHEASTERN CUMBERLAND COUNTIES...

AT 133 AM EDT...A STRONG THUNDERSTORM WAS OVER WEST CAPE MAY...OR
OVER CAPE MAY...MOVING NORTH AT 35 MPH.

WIND GUSTS UP TO 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
VINELAND...MILLVILLE...OCEAN CITY...CAPE MAY...CUMBERLAND...NORTH
WILDWOOD...LAUREL LAKE...WILDWOOD CREST...WOODBINE...SEA ISLE CITY...
ESTELL MANOR...AVALON...WEST CAPE MAY...STONE HARBOR...CORBIN CITY...
CAPE MAY COURT HOUSE...SCOTCH BONNET...BRICKSBORO...MARMORA AND PORT
ELIZABETH.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3920 7466 3910 7470 3903 7479 3899 7479
      3893 7489 3893 7497 3896 7496 3897 7494
      3897 7496 3901 7496 3909 7490 3916 7489
      3919 7497 3919 7503 3922 7503 3922 7505
      3941 7502 3927 7458
TIME...MOT...LOC 0533Z 190DEG 28KT 3895 7495

SFJ
Special weather statement, Jun 21, 1:57 AM EDT, 5 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
157 AM EDT SUN JUN 21 2015

NJZ008>010-012>015-019-020-210630-
SOMERSET-MIDDLESEX-MORRIS-MERCER-NORTHWESTERN BURLINGTON-EASTERN
MONMOUTH-WESTERN MONMOUTH-HUNTERDON-OCEAN-
157 AM EDT SUN JUN 21 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN HUNTERDON...
MERCER...MONMOUTH...NORTHWESTERN OCEAN...NORTH CENTRAL BURLINGTON...
SOUTHERN MORRIS...SOMERSET AND MIDDLESEX COUNTIES...

AT 156 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM CLINTON TO NEAR ALLENTOWN...AND MOVING NORTHEAST AT 45
MPH.

BRIEF TORRENTIAL RAINFALL AND WIND GUSTS UP TO 30 MPH ARE POSSIBLE
WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
TRENTON...NEW BRUNSWICK...PERTH AMBOY...LONG BRANCH...MORRISTOWN...
ASBURY PARK...SOMERVILLE...SOMERSET...EDISON...MIDDLETOWN...OLD
BRIDGE...HOWELL...EAST BRUNSWICK...BRIDGEWATER...SOUTH BRUNSWICK...
SAYREVILLE...NORTH BRUNSWICK...MARLBORO...MANALAPAN AND EWING.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4023 7399 4004 7462 4065 7502 4098 7445
      4082 7434 4074 7437 4067 7446 4065 7440
      4060 7446 4060 7421 4056 7421 4050 7428
      4047 7427 4044 7420 4046 7418 4044 7410
      4037 7405 4036 7407 4036 7405 4026 7398
TIME...MOT...LOC 0556Z 240DEG 40KT 4063 7490 4015 7459

SFJ
Local storm report, Jun 21, 2:51 AM EDT, 4 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
251 AM EDT SUN JUN 21 2015

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

0950 PM     TSTM WND GST     TILGHMAN ISLAND         38.71N  76.34W
06/20/2015  M46 MPH          TALBOT             MD   WEATHER FLOW

0955 PM     TSTM WND GST     TILGHMAN ISLAND         38.71N  76.34W
06/20/2015  M48 MPH          TALBOT             MD   WEATHER FLOW

0955 PM     TSTM WND DMG     TILGHMAN ISLAND         38.71N  76.34W
06/20/2015                   TALBOT             MD   911 CALL CENTER

            ELECTRICAL WIRES BLOWN DOWN

1018 PM     TSTM WND GST     STEVENSVILLE            38.98N  76.31W
06/20/2015  M49 MPH          QUEEN ANNES        MD   WEATHER FLOW

1148 PM     MARINE TSTM WIND BRANDYWINE SHOAL NOS    38.99N  75.11W
06/20/2015  M40 MPH          ANZ431             DE   NDBC BUOY

1251 AM     TSTM WND GST     FRANKFORD               38.52N  75.23W
06/21/2015  M63 MPH          SUSSEX             DE   TRAINED SPOTTER

&&

EVENT NUMBER PHI1500293 PHI1500294 PHI1500295 PHI1500296 PHI1500298
PHI1500297

STAFF
Special weather statement, Jun 21, 4:45 AM EDT, 2 hours 36 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 8:31 PM EDTSpecial Weather StatementPHISalem3 hr
Jun 21, 12:18 AM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Cape May, Mercer57 min
Jun 21, 12:42 AM EDTSpecial Marine WarningPHI48 min
Jun 21, 1:06 AM EDTSpecial Weather StatementPHIMercer, Middlesex, Monmouth, Ocean24 min
Jun 21, 1:19 AM EDTSpecial Marine WarningPHI26 min
Jun 21, 1:23 AM EDTSpecial Marine WarningPHI52 min
Jun 21, 1:33 AM EDTSpecial Weather StatementPHICape May27 min
Jun 21, 1:57 AM EDTSpecial Weather StatementPHIHunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset33 min
Jun 21, 3:14 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem4 hr
Jun 20, 10:47 PM EDTSpecial Weather StatementPHIBerks, Chester58 min
Jun 21, 12:47 AM EDTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Jun 21, 1:54 AM EDTAreal Flood AdvisoryPHIBerks, Carbon, Chester, Lehigh, Montgomery4 hr
Jun 20, 9:35 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot55 min
Jun 20, 9:49 PM EDTSevere Thunderstorm WarningPHICecil56 min
Jun 20, 9:57 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's63 min
Jun 20, 10:32 PM EDTSevere Thunderstorm WarningPHICaroline46 min
Jun 21, 4:45 AM EDTSpecial Weather StatementPHIQueen Anne's30 min
Jun 21, 5:12 AM EDTAreal Flood AdvisoryPHICaroline, Cecil, Kent, Queen Anne's, Talbot4 hr

Nearby

Areal Flood Advisories in New Jersey, 2015Every areal flood advisory in 2015

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.