Alert archive / New Jersey / Flash Flood Warnings in 2015

Flash Flood Warning 28, NWS Philadelphia/Mount Holly

July 1, 2015Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 1, 2015, 1:39 AM EDT for Sussex County, New Jersey. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 1, 2015, 1:39 AM EDT (05:39 UTC)
Expired
Jul 1, 2015, 5:15 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

County Sussex County, NJ

The radar

The Binghamton radar (KBGM), 146 km from the middle of the area, began a volume at 05:40 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, 5.7 hours before the alert went out and 166 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 2015-07-01Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2015-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
1407 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

246 
WGUS51 KPHI 010539
FFWPHI
NJC037-010915-
/O.NEW.KPHI.FF.W.0028.150701T0539Z-150701T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
139 AM EDT WED JUL 1 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL SUSSEX COUNTY IN NORTHWESTERN NEW JERSEY...

* UNTIL 515 AM EDT
    
* AT 137 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ENTERING THE POCONOS AND WILL PASS INTO SUSSEX 
  COUNTY AFTRE 3 AM.
 
* SOME LOCATIONS THAT WILL EXPERIENCE AT THE LEAST POOR DRAINAGE 
  FLOODING INCLUDE...     
  MONTAGUE...SUSSEX...BRANCHVILLE...HAINESVILLE... 
  PELLETTOWN...FLATBROOKVILLE...FIVE POINTS...HIGH POINT AND CRANDON 
  LAKES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE. IT IS
DIFFICULT AT NIGHT TO JUDGE THE DEPTH OF WATER ON ROADWAYS.

&&

LAT...LON 4127 7451 4099 7486 4110 7497 4116 7490
      4121 7486 4123 7487 4126 7484 4128 7484
      4132 7479 4133 7476 4135 7475 4136 7469

$$
1 follow-up statement
704 
WGUS71 KPHI 010849
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
449 AM EDT WED JUL 1 2015

NJC037-010858-
/O.CAN.KPHI.FF.W.0028.000000T0000Z-150701T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-
449 AM EDT WED JUL 1 2015

...THE FLASH FLOOD WARNING FOR CENTRAL SUSSEX COUNTY IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.

LAT...LON 4127 7451 4099 7486 4110 7497 4116 7490
      4121 7486 4123 7487 4126 7484 4128 7484
      4132 7479 4133 7476 4135 7475 4136 7469

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 8:23 PM EDTAreal Flood AdvisoryPHICamden, Gloucester4 hr
Jun 30, 8:26 PM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Jun 30, 9:16 PM EDTFlash Flood WarningPHISussex5 hr
Jul 1, 12:56 AM EDTSpecial Weather StatementPHISalem94 min
Jul 1, 2:17 AM EDTSevere Thunderstorm WarningPHIGloucester, Salem43 min
Jul 1, 2:50 AM EDTSpecial Weather StatementPHIMercer55 min
Jul 1, 3:26 AM EDTAreal Flood AdvisoryPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more3 hr
Jul 1, 3:37 AM EDTSpecial Weather StatementPHIOcean68 min
Jul 1, 3:39 AM EDTSpecial Marine WarningPHI96 min
Jul 1, 3:49 AM EDTSpecial Marine WarningPHI56 min
Jul 1, 3:49 AM EDTSmall Craft AdvisoryPHI6 hr
Jul 1, 3:49 AM EDTSmall Craft Advisory for Hazardous SeasPHI12 hr
Jul 1, 3:54 AM EDTAreal Flood AdvisoryPHIMorris2 hr

Nearby

Flash Flood Warnings in New Jersey, 2015Every flash flood warning 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.