Alert archive / New York / Flash Flood Warnings in 2016

Flash Flood Warning 8, NWS New York, NY

August 11, 2016Orange County, New York

NWS New York, NY issued this flash flood warning at Aug 11, 2016, 8:49 PM EDT for Orange County, New York. 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
Aug 11, 2016, 8:49 PM EDT (00:49 UTC)
Expired
Aug 11, 2016, 11:45 PM EDT
In force
3 hr
Issued by
NWS New York, NY
Area
Storm-based polygon
Flood severity
None

County Orange County, NY

The radar

The Albany radar (KENX), 132 km from the middle of the area, began a volume at 00:49 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

Albany, NY (KALY), launched 00:00Z, 0.8 hours before the alert went out and 150 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, Albany, NY at 00:00Z on 2016-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1524 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, Albany, NY at 00:00Z on 2016-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1524 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1207 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

511 
WGUS51 KOKX 120049
FFWOKX
NYC071-120345-
/O.NEW.KOKX.FF.W.0008.160812T0049Z-160812T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
849 PM EDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

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

* UNTIL 1145 PM EDT

* AT 849 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MIDDLETOWN...PORT JERVIS...MONROE...WALDEN...WARWICK...GOSHEN...CHESTER...
  MONTGOMERY...FLORIDA...HARRIMAN...UNIONVILLE...OAKLAND...KIRYAS JOEL...
  WASHINGTONVILLE...MAYBROOK...PINE BUSH...HIGHLAND MILLS...SCOTCHTOWN
  AND CENTRAL VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4150 7472 4150 7448 4157 7442 4163 7425
      4160 7425 4158 7414 4128 7405 4121 7439
      4136 7470 4137 7469 4139 7471 4140 7474
      4143 7474 4143 7476 4145 7476 4146 7475
      4149 7476

$$

BC
2 follow-up statements
867 
WGUS71 KOKX 120213
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
1013 PM EDT THU AUG 11 2016

NYC071-120345-
/O.CON.KOKX.FF.W.0008.000000T0000Z-160812T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ORANGE NY-
1013 PM EDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT FOR
ORANGE COUNTY...

AT 1012 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY
FALLEN. FLASH FLOODING IS OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MIDDLETOWN...PORT JERVIS...MONROE...WALDEN...WARWICK...GOSHEN...CHESTER...
MONTGOMERY...FLORIDA...HARRIMAN...UNIONVILLE...OAKLAND...KIRYAS JOEL...
WASHINGTONVILLE...MAYBROOK...PINE BUSH...HIGHLAND MILLS...SCOTCHTOWN AND
CENTRAL VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4150 7472 4150 7448 4157 7442 4163 7425
      4160 7425 4158 7414 4128 7405 4121 7439
      4136 7470 4137 7469 4139 7471 4140 7474
      4143 7474 4143 7476 4145 7476 4146 7475
      4149 7476

$$

BC
609 
WGUS71 KOKX 120349
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
1148 PM EDT THU AUG 11 2016

NYC071-120358-
/O.EXP.KOKX.FF.W.0008.000000T0000Z-160812T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ORANGE NY-
1148 PM EDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR ORANGE COUNTY HAS EXPIRED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4150 7472 4150 7448 4157 7442 4163 7425
      4160 7425 4158 7414 4128 7405 4121 7439
      4136 7470 4137 7469 4139 7471 4140 7474
      4143 7474 4143 7476 4145 7476 4146 7475
      4149 7476

$$

JM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 8:06 PM EDTSpecial Weather StatementOKXWestchester39 min
Aug 11, 8:37 PM EDTSevere Thunderstorm WarningOKXPutnam38 min
Aug 11, 9:29 PM EDTSmall Craft AdvisoryOKX31 hr
Aug 11, 11:02 PM EDTAreal Flood AdvisoryOKXOrange, Rockland118 min
Aug 12, 4:15 AM EDTExcessive Heat WarningOKXBronx, Kings, Nassau, New York, Orange, Putnam and 5 more65 hr
Aug 12, 1:15 PM EDTSpecial Weather StatementOKXOrange45 min
Aug 12, 2:01 PM EDTSpecial Weather StatementOKXOrange, Putnam, Rockland, Westchester44 min
Aug 12, 2:54 PM EDTSpecial Weather StatementOKXWestchester51 min
Aug 12, 5:23 PM EDTSpecial Marine WarningOKX37 min
Aug 12, 6:39 PM EDTSpecial Weather StatementOKXBronx, Kings, New York, Richmond51 min
Aug 12, 6:57 PM EDTSevere Thunderstorm WarningOKXBronx, Nassau, New York, Queens, Westchester48 min
Aug 12, 7:08 PM EDTSpecial Marine WarningOKX52 min
Aug 12, 7:20 PM EDTSpecial Marine WarningOKX40 min
Aug 12, 7:25 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk37 min
Aug 12, 7:59 PM EDTSpecial Marine WarningOKX31 min

Nearby

Flash Flood Warnings in New York, 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.