Alert archive / New Jersey / Flash Flood Warnings in 2014

Flash Flood Warning 24, NWS Philadelphia/Mount Holly

July 3, 20144 counties in New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 3, 2014, 7:44 PM EDT for 4 counties in New Jersey. It was in force for 4 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 3, 2014, 7:44 PM EDT (23:44 UTC)
Expired: Jul 3, 2014, 11:45 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 23:45 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.

What was reported inside it

Time	Report	Where	Remark
Jul 3, 8:05 PM EDT	FLASH FLOOD	Hillsborough, NJ
Jul 3, 8:15 PM EDT	FLASH FLOOD	Somerville, NJ	WATER RESCUE ON SOMERSET ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.7 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 708 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

382 
WGUS51 KPHI 032344
FFWPHI
NJC021-023-027-035-040345-
/O.NEW.KPHI.FF.W.0024.140703T2344Z-140704T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
744 PM EDT THU JUL 3 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF TRENTON...
  NORTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF NEW BRUNSWICK...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF SOMERVILLE...

* UNTIL 1145 PM EDT

* AT 742 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS SHOWING 
  THUNDERSTORMS ACROSS THE WARNED AREA. THESE THUNDERSTORMS WERE   
  PRODUCING HEAVY RAIN. ONE TO THREE INCHES PER HOUR CAN BE EXPECTED 
  WITH THE MOST INTENSE STORMS. THIS AMOUNT OF RAIN IN A ONE HOUR    
  TIME FRAME WILL LEAD TO FLOODING. SOME OF THE FLOODING WILL        
  DEVELOP QUICKLY.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BELLE
  MEAD...SOMERSET...SOCIETY HILL...MILLSTONE...MIDDLESEX...
  MANVILLE...EDISON...COLONIA...BOUND BROOK...NEW BRUNSWICK...
  MILLINGTON...MARTINSVILLE...MADISON AND FLAGTOWN

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 4021 7477 4026 7485 4029 7486 4032 7491
      4038 7484 4038 7480 4042 7480 4043 7475
      4046 7476 4082 7438 4069 7442 4068 7445
      4062 7442 4060 7444 4060 7421

$$

KRUZDLO

1 follow-up statement

693 
WGUS71 KPHI 040149
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
949 PM EDT THU JUL 3 2014

NJC021-023-027-035-040158-
/O.CAN.KPHI.FF.W.0024.000000T0000Z-140704T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER NJ-MORRIS NJ-SOMERSET NJ-MIDDLESEX NJ-
949 PM EDT THU JUL 3 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN
MIDDLESEX...SOMERSET...SOUTH CENTRAL MORRIS AND MERCER COUNTIES...

THE HEAVY RAINS HAVE MOVED OUT OF THE AREA. LOCAL STREAMS WILL RUN 
HIGH FOR AWHILE LONGER AND THERE MAY BE SOME PONDING OF WATER ON 
ROADS. BE CAREFUL IF DRIVING IN THE AFFECTED AREA TONIGHT. 

LAT...LON 4021 7477 4026 7485 4029 7486 4032 7491
      4038 7484 4038 7480 4042 7480 4043 7475
      4046 7476 4082 7438 4069 7442 4068 7445
      4062 7442 4060 7444 4060 7421

$$

PO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 8:07 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	4 hr
Jul 2, 8:08 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	52 min
Jul 2, 8:19 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth	56 min
Jul 2, 8:25 PM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Somerset	4 hr
Jul 2, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	57 min
Jul 2, 8:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean, Salem	67 min
Jul 2, 8:59 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Monmouth, Ocean	4 hr
Jul 2, 9:54 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	44 min
Jul 2, 10:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 2, 10:30 PM EDT	Special Weather Statement	PHI	Atlantic	60 min
Jul 2, 10:38 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	112 min
Jul 2, 10:58 PM EDT	Special Weather Statement	PHI	Burlington	62 min
Jul 2, 11:17 PM EDT	Flash Flood Warning	PHI	Burlington	3 hr
Jul 3, 12:19 AM EDT	Special Marine Warning	PHI		116 min
Jul 3, 12:23 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 12:26 AM EDT	Special Marine Warning	PHI		64 min
Jul 3, 12:41 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland	50 min
Jul 3, 1:00 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	45 min
Jul 3, 1:14 AM EDT	Special Marine Warning	PHI		61 min
Jul 3, 1:19 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	56 min
Jul 3, 1:52 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 3, 1:56 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	53 min
Jul 3, 2:08 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 2:34 AM EDT	Special Weather Statement	PHI	Monmouth	56 min
Jul 3, 5:46 AM EDT	Small Craft Advisory	PHI		54 hr
Jul 3, 1:22 PM EDT	Special Weather Statement	PHI	Warren	38 min
Jul 3, 1:57 PM EDT	Tornado Warning	PHI	Warren	24 min
Jul 3, 2:23 PM EDT	Special Weather Statement	PHI	Sussex	52 min
Jul 3, 3:27 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	41 hr
Jul 3, 4:26 PM EDT	Special Weather Statement	PHI	Warren	49 min
Jul 3, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	60 min
Jul 3, 5:21 PM EDT	Special Weather Statement	PHI	Sussex	54 min
Jul 3, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	55 min
Jul 3, 6:17 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Jul 3, 6:38 PM EDT	Special Weather Statement	PHI	Warren	67 min
Jul 3, 6:42 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 3, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	44 min
Jul 3, 6:47 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Sussex, Warren	58 min
Jul 3, 7:02 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Jul 3, 7:05 PM EDT	Special Weather Statement	PHI	Hunterdon	55 min
Jul 3, 7:14 PM EDT	Special Weather Statement	PHI	Sussex	61 min
Jul 3, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Morris, Somerset	55 min
Jul 3, 7:25 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset, Warren	65 min
Jul 3, 7:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	61 min

Nearby

Flash Flood Warnings in New Jersey, 2014 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.