Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 60, NWS Binghamton, NY

August 27, 2021Steuben County, New York

NWS Binghamton, NY issued this flash flood warning at Aug 27, 2021, 2:28 PM EDT for Steuben County, New York. It was in force for 4 hr. 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
Aug 27, 2021, 2:28 PM EDT (18:28 UTC)
Expired
Aug 27, 2021, 6:30 PM EDT
In force
4 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 99 km from the middle of the area, began a volume at 18:28 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 27, 2:40 PM EDTFLASH FLOOD4 E Campbell, NYWATER OVER DRY RUN ROAD.
Aug 27, 4:00 PM EDTFLASH FLOOD1 Ese Cameron Mills, NYWATER OVER COUNTY ROAD 22.
Aug 27, 4:10 PM EDTFLASH FLOOD0.7 Nw Cameron, NYWATER OVER COUNTY ROAD 199 NEAR MCMASTER ROAD.

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, 6.5 hours before the alert went out and 148 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 2021-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 321 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 2021-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
321 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

129 
WGUS51 KBGM 271828
FFWBGM
NYC101-272230-
/O.NEW.KBGM.FF.W.0060.210827T1828Z-210827T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
228 PM EDT Fri Aug 27 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Southern Steuben County in central New York...

* Until 630 PM EDT.

* At 228 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 2 
  inches in 1 hour. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Corning, Bath, Campbell, Canisteo, Painted Post, Addison, 
  Woodhull, Hornby, Jasper, Thurston, Cameron, Savona, Greenwood, 
  Hartsville, West Cameron, Coopers Plains, Gang Mills, Erwins, 
  Meads Creek and Cameron Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4222 7697 4214 7703 4209 7712 4206 7722
      4211 7773 4226 7773 4233 7733 4228 7710
      4227 7710 4227 7699 4223 7697

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2 INCHES IN 1 HOUR

$$

JAB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 1:54 PM EDTAreal Flood AdvisoryBGMSchuyler, Steuben2 hr
Aug 27, 4:23 PM EDTAreal Flood AdvisoryBGMBroome, Cortland, Tioga, Tompkins3 hr
Aug 27, 4:28 PM EDTAreal Flood AdvisoryBGMSteuben3 hr
Aug 27, 6:27 PM EDTAreal Flood AdvisoryBGMBroome, Delaware2 hr

Nearby

Flash Flood Warnings in New York, 2021Every flash flood warning in 2021

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.