Alert archive / New York / Flash Flood Warnings in 2015

Flash Flood Warning 25, NWS Buffalo, NY

August 10, 2015Wayne County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 10, 2015, 6:16 PM EDT for Wayne County, New York. It was in force for 3 hr. 2 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
Aug 10, 2015, 6:16 PM EDT (22:16 UTC)
Expired
Aug 10, 2015, 9:15 PM EDT
In force
3 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Wayne County, NY

The radar

The Ft Drum radar (KTYX), 116 km from the middle of the area, began a volume at 22:16 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
Aug 10, 6:23 PM EDTFLASH FLOODLyons, NYCANEL STREET CLOSED.
Aug 10, 6:25 PM EDTFLASH FLOODClyde, NYGLASGOW STREET CLOSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.3 hours before the alert went out and 153 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 2015-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2015-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1535 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
37 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.

636 
WGUS51 KBUF 102216
FFWBUF
NYC117-110115-
/O.NEW.KBUF.FF.W.0025.150810T2216Z-150811T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
616 PM EDT MON AUG 10 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN WAYNE COUNTY IN WESTERN NEW YORK...

* UNTIL 915 PM EDT
    
* AT 614 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM 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...
  NEWARK...LYONS AND CLYDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4318 7672 4303 7672 4302 7705 4326 7696

$$

APFFEL
2 follow-up statements
575 
WGUS71 KBUF 102347
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
747 PM EDT MON AUG 10 2015

NYC117-110115-
/O.CON.KBUF.FF.W.0025.000000T0000Z-150811T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE NY-
747 PM EDT MON AUG 10 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHEASTERN WAYNE COUNTY...

AT 744 PM EDT...DOPPLER RADAR ESTIMATES INDICATED THAT AS MUCH AS 
TWO TO THREE INCHES OF RAIN HAVE FALLEN ACROSS THE WARNED 
AREA...WITH OCCASIONAL SHOWERS EXPECTED TO PRODUCE ADDITIONAL 
RAINFALL ACROSS THE AREA THIS EVENING. FLASH FLOODING IS EXPECTED TO 
BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
LYONS...CLYDE...AND SAVANNAH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4318 7672 4303 7672 4302 7705 4326 7696

$$

JJR
020 
WGUS71 KBUF 110045
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
845 PM EDT MON AUG 10 2015

NYC117-110053-
/O.CAN.KBUF.FF.W.0025.000000T0000Z-150811T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE NY-
845 PM EDT MON AUG 10 2015

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

CALLS TO AREA LAW ENFORCEMENT INDICATE THAT FLOOD WATERS HAVE 
RECEDED...AND ARE NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR 
PROPERTY...SO THE FLASH FLOOD WARNING HAS BEEN CANCELLED. PLEASE 
CONTINUE TO HEED ANY LEFTOVER ROAD CLOSURES.

LAT...LON 4318 7672 4303 7672 4302 7705 4326 7696

$$

JJR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 3:08 PM EDTFlash Flood WarningBUFWayne6 hr
Aug 10, 3:24 PM EDTSpecial Weather StatementBUFLewis51 min
Aug 10, 3:56 PM EDTSpecial Weather StatementBUFMonroe49 min
Aug 10, 4:31 PM EDTSpecial Marine WarningBUF59 min
Aug 10, 4:43 PM EDTSpecial Weather StatementBUFWayne47 min
Aug 10, 5:15 PM EDTSpecial Marine WarningBUF60 min
Aug 10, 5:15 PM EDTSpecial Weather StatementBUFWyoming45 min
Aug 10, 5:17 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Wyoming43 min
Aug 10, 5:22 PM EDTSevere Thunderstorm WarningBUFCayuga, Wayne53 min
Aug 10, 6:01 PM EDTFlash Flood WarningBUFErie, Genesee, Wyoming3 hr

Nearby

Flash Flood Warnings in New York, 2015Every flash flood warning in 2015

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.