Alert archive / New Jersey / Flash Flood Warnings in 2014

Flash Flood Warning 29, NWS Philadelphia/Mount Holly

July 10, 2014Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 10, 2014, 7:02 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 3 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 10, 2014, 7:02 PM EDT (23:02 UTC)
Expired
Jul 10, 2014, 10:00 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 96 km from the middle of the area, began a volume at 23:04 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 12:00Z, 11.0 hours before the alert went out and 139 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 2014-07-10Temperature 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 12:00Z on 2014-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.19395878Sfc1 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
1110 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
28 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.

870 
WGUS51 KPHI 102302
FFWPHI
NJC027-035-110200-
/O.NEW.KPHI.FF.W.0029.140710T2302Z-140711T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
702 PM EDT THU JUL 10 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTH CENTRAL SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 1000 PM EDT

* AT 700 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SUCCASUNNA...PARSIPPANY...EAST HANOVER...BUDD LAKE...WHARTON...
  ROCKAWAY...NETCONG...MOUNTAIN LAKES...MORRIS PLAINS...DOVER AND
  BOONTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4079 7436 4073 7437 4068 7445 4067 7472
      4072 7472 4073 7476 4091 7473 4090 7470
      4091 7467 4092 7432 4088 7433 4087 7432
      4084 7432

$$

HEAVENER
1 follow-up statement
659 
WGUS71 KPHI 110009
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
809 PM EDT THU JUL 10 2014

NJC027-035-110016-
/O.CAN.KPHI.FF.W.0029.000000T0000Z-140711T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRIS NJ-SOMERSET NJ-
809 PM EDT THU JUL 10 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL
SOMERSET AND SOUTHERN MORRIS COUNTIES...

LAT...LON 4079 7436 4073 7437 4068 7445 4067 7472
      4072 7472 4073 7476 4091 7473 4090 7470
      4091 7467 4092 7432 4088 7433 4087 7432
      4084 7432

$$

HEAVENER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 8:19 AM EDTSpecial Marine WarningPHI86 min
Jul 10, 8:33 AM EDTSpecial Marine WarningPHI42 min
Jul 10, 8:36 AM EDTSpecial Weather StatementPHICumberland39 min
Jul 10, 9:23 AM EDTFlash Flood WarningPHIAtlantic, Cape May4 hr
Jul 10, 9:55 AM EDTSpecial Weather StatementPHICape May65 min
Jul 10, 3:14 PM EDTFlash Flood WatchPHIAtlantic, Cape May, Cumberland, Salem9 hr
Jul 10, 4:39 PM EDTSpecial Marine WarningPHI96 min
Jul 10, 6:27 PM EDTSpecial Weather StatementPHIMorris63 min

Nearby

Flash Flood Warnings in New Jersey, 2014Every flash flood warning in 2014

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.