Alert archive / New York / Flash Flood Warnings in 2016

Flash Flood Warning 7, NWS Buffalo, NY

August 11, 2016Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 11, 2016, 3:55 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 4 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, 3:55 PM EDT (19:55 UTC)
Expired
Aug 11, 2016, 7:45 PM EDT
In force
4 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 91 km from the middle of the area, began a volume at 19:55 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.9 hours before the alert went out and 90 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, Buffalo Intl Airport, NY at 12:00Z on 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Buffalo Intl Airport, NY at 12:00Z on 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1216 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

528 
WGUS51 KBUF 111955
FFWBUF
NYC009-013-112345-
/O.NEW.KBUF.FF.W.0007.160811T1955Z-160811T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
355 PM EDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL CATTARAUGUS COUNTY IN WESTERN NEW YORK...
  SOUTHEASTERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK...

* UNTIL 745 PM EDT

* AT 351 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...
  JAMESTOWN...LAKEWOOD...FALCONER...JAMESTOWN WEST...FREWSBURG...
  BUSTI...NEW ALBION AND GERRY.

THIS INCLUDES INTERSTATE 86 BETWEEN EXITS 11 AND 16.
 
LAT...LON 4200 7947 4224 7925 4239 7900 4239 7860
      4224 7882 4200 7914

$$

APFFEL
2 follow-up statements
305 
WGUS71 KBUF 112158
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
558 PM EDT THU AUG 11 2016

NYC009-112200-
/O.CAN.KBUF.FF.W.0007.000000T0000Z-160811T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-
558 PM EDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR WEST CENTRAL CATTARAUGUS COUNTY IS
CANCELLED...

FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4200 7947 4207 7940 4209 7913 4200 7914

$$

NYC013-112345-
/O.CON.KBUF.FF.W.0007.000000T0000Z-160811T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAUTAUQUA NY-
558 PM EDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR
SOUTHEASTERN CHAUTAUQUA COUNTY...

AT 550 PM EDT...AROUND 2 INCHES OF RAIN HAS FALLEN SOUTHWEST OF
JAMESTOWN BETWEEN NIOBE AND KIANTONE THIS AFTERNOON. FLOODING WAS
REPORTED ALONG PORTIONS OF ROUTE 60.  FLOODING IS ALSO POSSIBLE ON
STILLWATER CREEK WHICH IS THE BASIN WHICH MUCH OF THE HEAVY RAIN
FELL INTO. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
KIANTONE AND NIOBE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4200 7947 4207 7940 4209 7913 4200 7914

$$

APFFEL
261 
WGUS71 KBUF 112306
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
706 PM EDT THU AUG 11 2016

NYC013-112315-
/O.CAN.KBUF.FF.W.0007.000000T0000Z-160811T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAUTAUQUA NY-
706 PM EDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN CHAUTAUQUA COUNTY IS
CANCELLED...

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

LAT...LON 4200 7947 4207 7940 4209 7913 4200 7914

$$

THOMAS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 2:50 PM EDTSpecial Weather StatementBUFChautauqua55 min
Aug 11, 5:37 PM EDTSpecial Weather StatementBUFAllegany53 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.