Alert archive / New York / Flash Flood Warnings in 2013

Flash Flood Warning 2, NWS New York, NY

May 11, 20138 counties in New York; 4 counties in New Jersey

NWS New York, NY issued this flash flood warning at May 11, 2013, 4:01 PM EDT for 8 counties in New York; 4 counties in New Jersey. It was in force for 89 min. 1 report 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
May 11, 2013, 4:01 PM EDT (20:01 UTC)
Expired
May 11, 2013, 5:30 PM EDT
In force
89 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 89 km from the middle of the area, began a volume at 20:02 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
May 11, 4:07 PM EDTFLASH FLOODRutherford, NJHACKENSACK STREET WAS CLOSED NEAR ROUTE 17 OFF RAMPS DUE TO FLASH FLOODING. SEVERAL MOTORISTS WERE STRANDED.

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, 8.0 hours before the alert went out and 89 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 2013-05-11Temperature 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 2013-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 284 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1000 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
284 m²/s²
0-3 km storm-relative helicity
293 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.

810 
WGUS51 KOKX 112001
FFWOKX
NJC003-013-017-031-NYC005-047-059-061-081-085-087-119-112130-
/O.NEW.KOKX.FF.W.0002.130511T2001Z-130511T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
401 PM EDT SAT MAY 11 2013

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  QUEENS COUNTY IN SOUTHEAST NEW YORK...
  NORTHERN NASSAU COUNTY IN SOUTHEAST NEW YORK...
  PASSAIC COUNTY IN NORTHEAST NEW JERSEY...
  NEW YORK (MANHATTAN) COUNTY IN SOUTHEAST NEW YORK...
  BRONX COUNTY IN SOUTHEAST NEW YORK...
  WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
  BERGEN COUNTY IN NORTHEAST NEW JERSEY...
  SOUTHEASTERN ESSEX COUNTY IN NORTHEAST NEW JERSEY...
  RICHMOND (STATEN ISLAND) COUNTY IN SOUTHEAST NEW YORK...
  HUDSON COUNTY IN NORTHEAST NEW JERSEY...
  KINGS (BROOKLYN) COUNTY IN SOUTHEAST NEW YORK...
  ROCKLAND COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 530 PM EDT...

* AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. AN AREA OF 
SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAIN IS MOVING THROUGH 
PORTIONS OF NORTHEAST NEW JERSEY AND NEW YORK CITY. RAINFALL RATES 
OF UP TO 1.5 INCHES PER HOUR HAVE BEEN ESTIMATED BY RADAR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4068 7414 4069 7419 4083 7416 4101 7427
      4114 7423 4132 7399 4136 7356 4121 7349
      4110 7372 4098 7365 4085 7376 4085 7366
      4092 7352 4077 7346 4061 7405 4062 7405
      4070 7403 4061 7406 4057 7421

$$

JP
1 follow-up statement
659 
WGUS71 KOKX 112053
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
453 PM EDT SAT MAY 11 2013

NJC003-013-017-031-NYC005-047-059-061-081-085-087-119-112059-
/O.CAN.KOKX.FF.W.0002.000000T0000Z-130511T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROCKLAND NY-KINGS (BROOKLYN) NY-HUDSON NJ-RICHMOND (STATEN ISLAND) 
NY-ESSEX NJ-BERGEN NJ-WESTCHESTER NY-BRONX NY-NEW YORK (MANHATTAN) 
NY-PASSAIC NJ-NASSAU NY-QUEENS NY-
453 PM EDT SAT MAY 11 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR QUEENS...NORTHERN
NASSAU...PASSAIC...NEW YORK (MANHATTAN)...BRONX...WESTCHESTER...
BERGEN...SOUTHEASTERN ESSEX...RICHMOND (STATEN ISLAND)...HUDSON...
KINGS (BROOKLYN) AND ROCKLAND COUNTIES...

THE LINE OF SHOWERS AND THUNDERSTORMS THAT PRODUCED THE HEAVY RAIN 
HAS MOVED EAST OF THE AREA. ANY HIGH WATER WILL LOWER THROUGH THE 
EVENING.

LAT...LON 4068 7414 4069 7419 4083 7416 4101 7427
      4114 7423 4132 7399 4136 7356 4121 7349
      4110 7372 4098 7365 4085 7376 4085 7366
      4092 7352 4077 7346 4061 7405 4062 7405
      4070 7403 4061 7406 4057 7421

$$

JP

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 3:01 PM EDTSpecial Weather StatementOKXBronx, Kings, New York, Richmond, Rockland, Westchester59 min
May 11, 3:08 PM EDTSevere Thunderstorm WarningOKXBronx, Kings, New York, Queens, Richmond52 min
May 11, 3:25 PM EDTAreal Flood AdvisoryOKXBronx, Kings, New York, Queens, Richmond50 min
May 11, 3:25 PM EDTSpecial Marine WarningOKX50 min
May 11, 4:00 PM EDTSevere Thunderstorm WarningOKXBronx, Kings, Nassau, New York, Queens, Richmond and 2 more45 min
May 11, 4:03 PM EDTSpecial Marine WarningOKX42 min
May 11, 4:43 PM EDTAreal Flood AdvisoryOKXSuffolk62 min
May 11, 4:45 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk45 min
May 11, 4:48 PM EDTSpecial Marine WarningOKX57 min
May 11, 6:31 PM EDTSpecial Weather StatementOKXOrange44 min
May 11, 3:06 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Hudson, Passaic, Union54 min

Nearby

Flash Flood Warnings in New York, 2013Flash Flood Warnings in New Jersey, 2013Every flash flood warning in 2013

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.