Alert archive / New York / Flash Flood Warnings in 2012

Flash Flood Warning 3, NWS New York, NY

June 6, 2012Richmond County, New York

NWS New York, NY issued this flash flood warning at Jun 6, 2012, 8:47 PM EDT for Richmond County, New York. It was in force for 23 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: Jun 6, 2012, 8:47 PM EDT (00:47 UTC)
Expired: Jun 6, 2012, 9:10 PM EDT
In force: 23 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Flood severity: None

County Richmond County, NY

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 00:48 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
Jun 6, 8:50 PM EDT	FLASH FLOOD	1 Se Princes Bay, NY	INTERSECTION OF HYLAND BOULEVARD AND CORNELIA AVENUE CLOSED DUE TO FLOODING.

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 00:00Z, 0.8 hours before the alert went out and 118 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: 110 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1106 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 46 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.

976 
WGUS51 KOKX 070047
FFWOKX
NYC085-070145-
/O.NEW.KOKX.FF.W.0003.120607T0047Z-120607T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
847 PM EDT WED JUN 6 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RICHMOND (STATEN ISLAND) COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 945 PM EDT...

* AT 843 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR HUGUENOT...MOVING SOUTHEAST
  AT 5 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.

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 4050 7426 4052 7425 4055 7426 4056 7422
      4058 7422 4060 7411 4058 7410 4056 7409
      4052 7413 4053 7415 4050 7419 4051 7420
      4049 7424

$$

JM

1 follow-up statement

798 
WGUS71 KOKX 070110
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
910 PM EDT WED JUN 6 2012

NYC085-070119-
/O.CAN.KOKX.FF.W.0003.000000T0000Z-120607T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RICHMOND (STATEN ISLAND) NY-
910 PM EDT WED JUN 6 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR RICHMOND (STATEN
ISLAND) COUNTY...

WHILE HEAVY SHOWERS AND THUNDERSTORMS HAVE MOVED OFFSHORE...THERE 
MAY STILL BE SOME AREAS ON STANDING WATER WHERE THERE IS FLOODING. 

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 4050 7426 4052 7425 4055 7426 4056 7422
      4058 7422 4060 7411 4058 7410 4056 7409
      4052 7413 4053 7415 4050 7419 4051 7420
      4049 7424

$$

JM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 8:38 PM EDT	Areal Flood Advisory	OKX	Richmond	37 min
Jun 7, 7:08 PM EDT	Special Weather Statement	OKX	Bronx, Nassau, Queens	37 min

Nearby

Flash Flood Warnings in New York, 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.