Alert archive / New Jersey / Flash Flood Warnings in 2012

Flash Flood Warning 13, NWS New York, NY

July 28, 2012Bergen County, Essex County, Passaic County, New Jersey

NWS New York, NY issued this flash flood warning at Jul 28, 2012, 3:35 PM EDT for Bergen County, Essex County, Passaic County, New Jersey. It was in force for 115 min. 7 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 28, 2012, 3:35 PM EDT (19:35 UTC)
Expired
Jul 28, 2012, 5:30 PM EDT
In force
115 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

Counties Bergen County, NJ, Essex County, NJ, Passaic County, NJ

The radar

The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 19:36 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

TimeReportWhereRemark
Jul 28, 4:23 PM EDTFLASH FLOOD1 Sse Saddle Brook, NJMARKET ST IMPASSABLE DUE TO FLOODING
Jul 28, 4:40 PM EDTFLASH FLOOD1 Ese Arcola, NJRESCUE BOAT SENT FOR STRANDED MOTORISTS AT RTE 17 NORTH AND RTE 4
Jul 28, 4:47 PM EDTFLASH FLOOD1 Wnw Allwood, NJROUTE 3 WEST BETWEEN BLOOMFIELD AVE AND GS PKWY BLOCKED DUE TO FLOODING
Jul 28, 4:48 PM EDTFLASH FLOODHackensack, NJRESCUE BOAT REQUESTED FOR STRANDED MOTORISTS
Jul 28, 4:55 PM EDTFLASH FLOOD1 Nnw Fort Lee, NJALL LANES BLOCKED ON RTE-46 BETWEEN BERGEN BLVD AND MAIN ST
Jul 28, 4:55 PM EDTFLASH FLOOD1 Ssw Rochelle Park, NJACKERMAN AVE AND SADDLE RIVER RD CLOSED FROM FLOODING
Jul 28, 4:56 PM EDTFLASH FLOODHasbrouck Heights, NJROUTE 17 CLOSED NORTHBOUND AND SOUTHBOUND

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, 7.6 hours before the alert went out and 113 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 2012-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 424 joules per kilogram.LCLLFCEL10008507005003002001001 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 2012-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
424 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
705 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

846 
WGUS51 KOKX 281935
FFWOKX
NJC003-013-031-282130-
/O.NEW.KOKX.FF.W.0013.120728T1935Z-120728T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
335 PM EDT SAT JUL 28 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PASSAIC COUNTY IN NORTHEAST NEW JERSEY...
  SOUTHEASTERN BERGEN COUNTY IN NORTHEAST NEW JERSEY...
  ESSEX COUNTY IN NORTHEAST NEW JERSEY...

* UNTIL 530 PM EDT...

* AT 331 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY DOWNPOURS LIKELY PRODUCING FLASH FLOODING FROM
  THUNDERSTORMS NEAR FAIRFIELD...OR NEAR LINCOLN PARK...MOVING EAST
  AT 20 MPH.

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 4082 7434 4086 7433 4087 7434 4090 7434
      4091 7430 4090 7428 4092 7428 4101 7394
      4099 7389 4082 7399 4082 7402 4078 7414
      4078 7415 4077 7416 4074 7437 4080 7437

$$

PW
2 follow-up statements
750 
WGUS71 KOKX 282045
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
445 PM EDT SAT JUL 28 2012

NJC003-013-031-282130-
/O.CON.KOKX.FF.W.0013.000000T0000Z-120728T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESSEX NJ-BERGEN NJ-PASSAIC NJ-
445 PM EDT SAT JUL 28 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
PASSAIC...SOUTHEASTERN BERGEN AND NORTHERN ESSEX COUNTIES...

AT 441 PM EDT...ADDITIONAL SHOWERS AND EMBEDDED THUNDERSTORMS WILL 
CONTINUE. HOWEVER THE MAIN AREA OF HEAVY RAIN HAS MOVED EAST. 
LINGERING FLOODING CAN STILL BE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
SATURDAY EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY
AND SOUTHEAST NEW YORK.

&&

LAT...LON 4082 7434 4086 7433 4087 7434 4090 7434
      4091 7430 4090 7428 4092 7428 4101 7394
      4099 7389 4082 7399 4082 7402 4078 7414
      4078 7415 4077 7416 4074 7437 4080 7437

$$

PW
265 
WGUS71 KOKX 282127
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
527 PM EDT SAT JUL 28 2012

NJC003-013-031-282136-
/O.EXP.KOKX.FF.W.0013.000000T0000Z-120728T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESSEX NJ-BERGEN NJ-PASSAIC NJ-
527 PM EDT SAT JUL 28 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 530 PM EDT FOR PASSAIC...
SOUTHEASTERN BERGEN AND NORTHERN ESSEX COUNTIES...

THE THUNDERSTORMS HAVE MOVED TO THE EAST OF THE WARNED AREA. AS 
SUCH...NO ADDITIONAL FLASH FLOODING IS EXPECTED AT THIS TIME. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
SATURDAY EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY
AND SOUTHEAST NEW YORK.

LAT...LON 4082 7434 4086 7433 4087 7434 4090 7434
      4091 7430 4090 7428 4092 7428 4101 7394
      4099 7389 4082 7399 4082 7402 4078 7414
      4078 7415 4077 7416 4074 7437 4080 7437

$$

PW

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 1:54 PM EDTSpecial Weather StatementOKXPassaic66 min
Jul 28, 1:58 PM EDTAreal Flood AdvisoryOKXBergen, Passaic92 min
Jul 28, 2:40 PM EDTFlash Flood WarningOKXBergen, Passaic3 hr
Jul 28, 3:17 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Hudson, Passaic58 min
Jul 28, 4:00 PM EDTFlash Flood WarningOKXBergen, Essex, Hudson112 min

Nearby

Flash Flood Warnings in New Jersey, 2012Every flash flood warning in 2012

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.