Alert archive / New York / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS New York, NY

July 8, 2016Orange County, New York; Passaic County, New Jersey

NWS New York, NY issued this flash flood warning at Jul 8, 2016, 3:55 PM EDT for Orange County, New York; Passaic 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 8, 2016, 3:55 PM EDT (19:55 UTC)
Expired
Jul 8, 2016, 6:45 PM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

Counties Passaic County, NJ, Orange County, NY

The radar

The Brookhaven radar (KOKX), 126 km from the middle of the area, began a volume at 19:58 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, 7.9 hours before the alert went out and 126 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 2016-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 387 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 2016-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -67 square meters per square second.1939Sfc1 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
387 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-67 m²/s²
0-3 km storm-relative helicity
-38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

253 
WGUS51 KOKX 081955
FFWOKX
NJC031-NYC071-082245-
/O.NEW.KOKX.FF.W.0001.160708T1955Z-160708T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
355 PM EDT FRI JUL 8 2016

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PASSAIC COUNTY IN NORTHEASTERN NEW JERSEY...
  SOUTHEASTERN ORANGE COUNTY IN SOUTHEASTERN NEW YORK...

* UNTIL 645 PM EDT

* AT 352 PM EDT...DOPPLER RADAR INDICATED NEARLY STATIONARY
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WEST MILFORD...RINGWOOD...WARWICK...AND GREENWOOD LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4120 7436 4144 7437 4128 7407 4124 7410
      4115 7423 4113 7421 4102 7427 4101 7427
      4098 7429 4100 7430 4100 7433 4101 7434
      4100 7435 4101 7435 4101 7438 4104 7444
      4105 7445 4105 7446 4107 7449 4109 7450

$$

JMC
1 follow-up statement
181 
WGUS71 KOKX 082029
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
429 PM EDT FRI JUL 8 2016

NJC031-NYC071-082038-
/O.CAN.KOKX.FF.W.0001.000000T0000Z-160708T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PASSAIC NJ-ORANGE NY-
429 PM EDT FRI JUL 8 2016

...THE FLASH FLOOD WARNING FOR PASSAIC AND SOUTHEASTERN ORANGE
COUNTIES IS CANCELLED...

THE HEAVY RAIN WHICH PROMPTED THE WARNING HAS DIMINISHED. PLEASE
CONTINUE TO HEED ANY REMAINING ROAD CLOSURES DUE TO RESIDUAL
FLOODING.

LAT...LON 4120 7436 4144 7437 4128 7407 4124 7410
      4115 7423 4113 7421 4102 7427 4101 7427
      4098 7429 4100 7430 4100 7433 4101 7434
      4100 7435 4101 7435 4101 7438 4104 7444
      4105 7445 4105 7446 4107 7449 4109 7450

$$

JMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 10:25 PM EDTMarine Dense Fog AdvisoryOKX12 hr
Jul 8, 3:17 PM EDTAreal Flood AdvisoryOKXOrange58 min
Jul 8, 4:34 PM EDTSpecial Weather StatementOKXOrange41 min
Jul 8, 2:59 PM EDTAreal Flood AdvisoryOKXPassaic61 min

Nearby

Flash Flood Warnings in New York, 2016Flash Flood Warnings in New Jersey, 2016Every flash flood warning in 2016

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.