Alert archive / New York / Flash Flood Warnings in 2012

Flash Flood Warning 14, NWS New York, NY

July 28, 2012Bergen County, Essex County, Hudson County, New Jersey; 6 counties in New York; Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this flash flood warning at Jul 28, 2012, 4:00 PM EDT for Bergen County, Essex County, Hudson County, New Jersey; 6 counties in New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 112 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: Jul 28, 2012, 4:00 PM EDT (20:00 UTC)
Expired: Jul 28, 2012, 5:52 PM EDT
In force: 112 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Flood severity: None

Counties Greater Bridgeport Planning Region, CT, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 79 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

Time	Report	Where	Remark
Jul 28, 5:14 PM EDT	FLASH FLOOD	Bronx River Houses, NY	TWO LANES BLOCKED ON BRONX RIVER PKWY BETWEEN 174TH AND 177TH ST

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 79 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: 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.

214 
WGUS51 KOKX 282000
FFWOKX
CTC001-NJC003-013-017-NYC005-047-059-061-081-119-282200-
/O.NEW.KOKX.FF.W.0014.120728T2000Z-120728T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
  QUEENS COUNTY IN SOUTHEAST NEW YORK...
  NORTHWESTERN NASSAU COUNTY IN SOUTHEAST NEW YORK...
  NEW YORK (MANHATTAN) COUNTY IN SOUTHEAST NEW YORK...
  BRONX COUNTY IN SOUTHEAST NEW YORK...
  WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
  SOUTHEASTERN BERGEN COUNTY IN NORTHEAST NEW JERSEY...
  SOUTHERN ESSEX COUNTY IN NORTHEAST NEW JERSEY...
  HUDSON COUNTY IN NORTHEAST NEW JERSEY...
  KINGS (BROOKLYN) COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 600 PM EDT...

* AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM
  STAMFORD TO RIVERDALE TO ORANGE...OR ALONG A LINE EXTENDING FROM
  STAMFORD TO BERGENFIELD TO MILLBURN...MOVING EAST SOUTHEAST AT 20
  MPH. RAINFALL RATES IN EXCESS OF TWO INCHES PER HOUR ARE EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4075 7432 4083 7399 4101 7393 4107 7371
      4107 7338 4100 7361 4090 7375 4084 7376
      4087 7370 4085 7366 4090 7364 4092 7357
      4092 7352 4088 7350 4064 7373 4063 7405
      4070 7401 4065 7410

$$

PW

1 follow-up statement

249 
WGUS71 KOKX 282152
FFSOKX

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

CTC001-NJC003-013-017-NYC005-047-059-061-081-119-282201-
/O.CAN.KOKX.FF.W.0014.000000T0000Z-120728T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KINGS (BROOKLYN) NY-HUDSON NJ-ESSEX NJ-BERGEN NJ-WESTCHESTER NY-
BRONX NY-NEW YORK (MANHATTAN) NY-NASSAU NY-QUEENS NY-FAIRFIELD CT-
552 PM EDT SAT JUL 28 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME SOUTHERN
FAIRFIELD...QUEENS...NORTHWESTERN NASSAU...NEW YORK (MANHATTAN)...
BRONX...WESTCHESTER...SOUTHEASTERN BERGEN...SOUTHERN ESSEX...HUDSON
AND KINGS (BROOKLYN) COUNTIES...

THE HEAVIER SHOWERS AND THUNDERSTORMS HAVE MOVED TO THE EAST OF THE 
WARNED AREA. 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 4075 7432 4083 7399 4101 7393 4107 7371
      4107 7338 4100 7361 4090 7375 4084 7376
      4087 7370 4085 7366 4090 7364 4092 7357
      4092 7352 4088 7350 4064 7373 4063 7405
      4070 7401 4065 7410

$$

PW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 1:54 PM EDT	Special Weather Statement	OKX	Passaic	66 min
Jul 28, 1:58 PM EDT	Areal Flood Advisory	OKX	Bergen, Passaic	92 min
Jul 28, 2:40 PM EDT	Flash Flood Warning	OKX	Bergen, Passaic	3 hr
Jul 28, 3:17 PM EDT	Areal Flood Advisory	OKX	Bergen, Essex, Hudson, Passaic	58 min
Jul 28, 3:35 PM EDT	Flash Flood Warning	OKX	Bergen, Essex, Passaic	115 min
Jul 28, 8:41 AM EDT	Areal Flood Advisory	OKX	Nassau	2 hr
Jul 28, 8:43 AM EDT	Areal Flood Advisory	OKX	Suffolk	2 hr
Jul 28, 8:49 AM EDT	Areal Flood Advisory	OKX	Suffolk	116 min
Jul 28, 12:16 PM EDT	Areal Flood Advisory	OKX	Orange, Putnam	59 min
Jul 28, 12:47 PM EDT	Flash Flood Warning	OKX	Orange	3 hr
Jul 28, 1:03 PM EDT	Special Weather Statement	OKX	Orange	42 min
Jul 28, 1:08 PM EDT	Severe Thunderstorm Warning	OKX	Orange	37 min
Jul 28, 1:25 PM EDT	Areal Flood Advisory	OKX	Putnam	95 min
Jul 28, 1:48 PM EDT	Special Weather Statement	OKX	Putnam	57 min
Jul 28, 2:20 PM EDT	Areal Flood Advisory	OKX	Westchester	85 min
Jul 28, 2:44 PM EDT	Flash Flood Warning	OKX	Putnam, Westchester	3 hr
Jul 28, 2:58 PM EDT	Special Marine Warning	OKX		47 min
Jul 28, 5:04 PM EDT	Areal Flood Advisory	OKX	Nassau, Suffolk	116 min
Jul 28, 6:43 PM EDT	Special Weather Statement	OKX	Orange	62 min
Jul 28, 3:41 PM EDT	Areal Flood Advisory	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	2 hr
Jul 28, 4:34 PM EDT	Flash Flood Warning	OKX	Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region	116 min

Nearby

Flash Flood Warnings in New York, 2012 Flash Flood Warnings in New Jersey, 2012 Flash Flood Warnings in Connecticut, 2012 Every 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.