Alert archive / New York / Flash Flood Warnings in 2012

Flash Flood Warning 4, NWS New York, NY

June 22, 2012Richmond County, New York

NWS New York, NY issued this flash flood warning at Jun 22, 2012, 1:55 PM EDT for Richmond County, New York. It was in force for 56 min. 3 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
Jun 22, 2012, 1:55 PM EDT (17:55 UTC)
Expired
Jun 22, 2012, 2:51 PM EDT
In force
56 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

County Richmond County, NY

The radar

The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 17:57 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
Jun 22, 2:30 PM EDTFLASH FLOODBay Terrace, NYHYLAN BLVD CLOSED AT REID AVE DUE TO FLOODING.
Jun 22, 2:30 PM EDTFLASH FLOODCastleton Corners, NYSLOSSON AVE CLOSED AT TODT HILL RD DUE TO FLOODING.
Jun 22, 2:50 PM EDTFLASH FLOODRossville, NYARDEN AVE CLOSED AT VESPA AVE 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 12:00Z, 5.9 hours before the alert went out and 116 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 2012-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 840 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 2012-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
840 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

797 
WGUS51 KOKX 221755
FFWOKX
NYC085-221930-
/O.NEW.KOKX.FF.W.0004.120622T1755Z-120622T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
155 PM EDT FRI JUN 22 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

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

* UNTIL 330 PM EDT...

* AT 153 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

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.

&&

LAT...LON 4049 7426 4056 7424 4056 7422 4060 7420
      4063 7420 4066 7408 4061 7405 4068 7403
      4069 7401 4057 7395 4056 7401 4058 7402
      4059 7401 4061 7405 4052 7413 4050 7422

$$
1 follow-up statement
830 
WGUS71 KOKX 221851
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
251 PM EDT FRI JUN 22 2012

NYC085-221857-
/O.CAN.KOKX.FF.W.0004.000000T0000Z-120622T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RICHMOND (STATEN ISLAND) NY-
251 PM EDT FRI JUN 22 2012

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

WHILE HEAVY RAIN AND THUNDERSTORMS HAVE MOVED EAST OF THE 
AREA...THERE MAY STILL BE SOME AREAS THAT ARE EXPERIENCING 
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 4049 7426 4056 7424 4056 7422 4060 7420
      4063 7420 4066 7408 4061 7405 4068 7403
      4069 7401 4057 7395 4056 7401 4058 7402
      4059 7401 4061 7405 4052 7413 4050 7422

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 1:51 PM EDTSpecial Marine WarningOKX24 min
Jun 22, 1:56 PM EDTSevere Thunderstorm WarningOKXNassau49 min
Jun 22, 2:08 PM EDTSevere Thunderstorm WarningOKXKings, Queens, Richmond37 min
Jun 22, 2:16 PM EDTAreal Flood AdvisoryOKXBronx, Kings, Nassau, New York, Queens, Suffolk and 1 more89 min
Jun 22, 2:22 PM EDTSpecial Marine WarningOKX23 min
Jun 22, 2:31 PM EDTSpecial Marine WarningOKX61 min
Jun 22, 2:55 PM EDTSpecial Weather StatementOKXNassau35 min
Jun 22, 3:00 PM EDTSpecial Weather StatementOKXNassau60 min
Jun 22, 3:57 PM EDTSpecial Weather StatementOKXRockland63 min
Jun 22, 4:04 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland41 min
Jun 22, 4:46 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland, Westchester34 min
Jun 22, 5:08 PM EDTSevere Thunderstorm WarningOKXRockland, Westchester36 min
Jun 22, 5:27 PM EDTSpecial Marine WarningOKX35 min
Jun 22, 5:43 PM EDTSpecial Weather StatementOKXBronx, New York, Richmond62 min
Jun 22, 5:58 PM EDTSpecial Marine WarningOKX47 min

Nearby

Flash Flood Warnings in New York, 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.