Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 63, NWS Binghamton, NY

August 29, 2021Seneca County, New York

NWS Binghamton, NY issued this flash flood warning at Aug 29, 2021, 2:17 PM EDT for Seneca 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 29, 2021, 2:17 PM EDT (18:17 UTC)
Expired
Aug 29, 2021, 5:30 PM EDT
In force
3 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Seneca County, NY

The radar

The Binghamton radar (KBGM), 103 km from the middle of the area, began a volume at 18:18 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, 6.3 hours before the alert went out and 144 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 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 580 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 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
580 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

225 
WGUS51 KBGM 291817
FFWBGM
NYC099-292130-
/O.NEW.KBGM.FF.W.0063.210829T1817Z-210829T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
217 PM EDT Sun Aug 29 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  West Central Seneca County in central New York...

* Until 530 PM EDT.

* At 217 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 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...
  Seneca Falls, Kendaia, Fayette, Mac Dougall, Rose Hill and East 
  Varick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 4276 7697 4280 7698 4281 7697 4282 7698
      4283 7698 4284 7697 4286 7698 4287 7698
      4287 7696 4291 7676 4277 7674 4273 7694
      4274 7694 4276 7695

FLASH FLOOD...RADAR INDICATED

$$

DJP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 3:27 PM EDTSpecial Weather StatementBGMSeneca33 min
Aug 29, 3:37 PM EDTSevere Thunderstorm WarningBGMCayuga, Seneca53 min
Aug 29, 4:19 PM EDTSevere Thunderstorm WarningBGMCayuga, Cortland, Madison, Onondaga28 min
Aug 29, 5:36 PM EDTSpecial Weather StatementBGMYates39 min
Aug 29, 5:51 PM EDTAreal Flood AdvisoryBGMSchuyler, Steuben, Yates114 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.