Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 34, NWS Binghamton, NY

July 17, 20214 counties in New York

NWS Binghamton, NY issued this flash flood warning at Jul 17, 2021, 7:23 PM EDT for 4 counties in New York. It was in force for 2 hr. 20 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
Jul 17, 2021, 7:23 PM EDT (23:23 UTC)
Expired
Jul 17, 2021, 9:45 PM EDT
In force
2 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

Counties Broome County, NY, Chenango County, NY, Delaware County, NY, Otsego County, NY

The radar

The Binghamton radar (KBGM), 25 km from the middle of the area, began a volume at 23:24 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
Jul 17, 7:25 PM EDTFLASH FLOOD2 Sse Endwell, NYFLOODING ON VESTAL PARKWAY. PARKING LOTS TAKING ON WATER.
Jul 17, 7:30 PM EDTFLASH FLOODJohnson City, NYWATER OVER ROAD HARRY L AND REYNOLDS ROAD.
Jul 17, 7:34 PM EDTFLOOD1 Ene Binghamton, NYCAR STUCK IN FLOODED INTERSECTION.
Jul 17, 7:37 PM EDTFLOOD1 Wnw Binghamton, NYROAD FLOODED.
Jul 17, 7:53 PM EDTHEAVY RAIN 1.6Nws Binghamton, NYASOS STATION KBGM BINGHAMTON AIRPORT.
Jul 17, 8:00 PM EDTFLOOD1 Ene Binghamton, NYROAD FLOODED.
Jul 17, 8:00 PM EDTFLASH FLOOD1 Nne Gilbertsville, NYCORRECTS PREVIOUS FLASH FLOOD REPORT FROM 1 NNE GILBERTSVILLE. PART OF RT 8 WASHED OUT. REPORTS OF OTHER ROADS IN THE AREA WASHED OUT AS WELL. TIME ESTIMATED BY RADAR.
Jul 17, 8:00 PM EDTFLASH FLOOD1 Sse Oxford, NYBRADLEY HILL. SOCIAL MEDIA PHOTO SENT IN WITH WATER AND MUD FLOWING OVER ROADWAY. APPROXIMATE TIME.
Jul 17, 8:00 PM EDTFLASH FLOOD1 Sse Oxford, NYROAD FLOODED. MUD LEFT ON ROAD.
Jul 17, 8:00 PM EDTFLASH FLOODMorris, NYCORRECTS PREVIOUS FLASH FLOOD REPORT FROM MORRIS. BRIDGE FLOODED. HAY BAILS ARE BLOCKING THE CREEK UNDERPASS. TIME ESTIMATED BY RADAR.
Jul 17, 8:00 PM EDTFLASH FLOODMorris, NYCORRECTS PREVIOUS FLASH FLOOD REPORT FROM MORRIS. FIRE STATION FLOODED OUT. TIME ESTIMATED BY RADAR.
Jul 17, 8:00 PM EDTFLASH FLOODMt Upton, NYALSO IN NEW SOUTH BERLIN. ROADS FLOODED INCLUDING ROUTE 8 IN SEVERAL PLACES.
Jul 17, 8:30 PM EDTHEAVY RAIN 1.242 E Union Center, NYMESONET STATION FW3025 ENDICOTT.
Jul 17, 8:30 PM EDTHEAVY RAIN 1.352 Se Smithville Flats, NYMESONET STATION DW7623 GREENE.
Jul 17, 8:31 PM EDTHEAVY RAIN 1.091 W West Corners, NYMESONET STATION EW5915 ENDICOTT.
Jul 17, 8:31 PM EDTHEAVY RAIN 1.24Polkville, NYMESONET STATION EW0463 NORWICH.
Jul 17, 8:32 PM EDTHEAVY RAIN 1.313 Se Endwell, NYMESONET STATION CW7492 VESTAL.
Jul 17, 8:40 PM EDTHEAVY RAIN 1.134 Sw Binghamton, NYMESONET STATION BING BINGHAMTON.
Jul 17, 8:40 PM EDTHEAVY RAIN 1.592 N Belden, NYMESONET STATION BELD BELDEN.
Jul 17, 9:00 PM EDTHEAVY RAIN 2.032 Ese Binghamton, NY3 HOUR RAINFALL TOTAL.

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

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 11.4 hours before the alert went out and 162 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 12:00Z on 2021-07-17Temperature 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, Albany, NY at 12:00Z on 2021-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
958 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

612 
WGUS51 KBGM 172323
FFWBGM
NYC007-017-025-077-180230-
/O.NEW.KBGM.FF.W.0034.210717T2323Z-210718T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
723 PM EDT Sat Jul 17 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Broome County in central New York...
  Chenango County in central New York...
  West Central Delaware County in central New York...
  West Central Otsego County in central New York...

* Until 1030 PM EDT.

* At 723 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.5 and 1.5 inches of 
  rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 1 to 2 inches are possible in 
  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...
  Binghamton, Johnson City, Endicott, Norwich, Deposit, Greater 
  Binghamton Airport, Vestal, Kirkwood, Conklin, Sidney, Guilford, 
  Sanford, Coventry, Greene, Oxford, Bainbridge, New Berlin, 
  Windsor, Afton and Morris.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

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

&&

LAT...LON 4214 7611 4260 7566 4264 7517 4264 7515
      4232 7541 4200 7539 4200 7543 4200 7544
      4200 7548 4200 7550 4200 7556 4200 7610
      4210 7611 4211 7611 4213 7611

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

$$

NICOSIA
2 follow-up statements
144 
WGUS71 KBGM 180119
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
919 PM EDT Sat Jul 17 2021

NYC007-017-025-077-180230-
/O.CON.KBGM.FF.W.0034.000000T0000Z-210718T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Broome NY-Chenango NY-Delaware NY-Otsego NY-
919 PM EDT Sat Jul 17 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR BROOME, CHENANGO, WEST CENTRAL DELAWARE AND WEST CENTRAL 
OTSEGO COUNTIES...

At 919 PM EDT, Doppler radar indicated that the heaviest rain has 
moved well east of the warned area. Between 1 and 2.5 inches of rain 
has fallen. Flash flooding is ongoing or expected to begin shortly 
as runoff from earlier heavy rain continues.

HAZARD...Flash flooding caused by heavy rain.

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...
  Binghamton, Johnson City, Endicott, Norwich, Deposit, Greater 
  Binghamton Airport, Vestal, Kirkwood, Conklin, Sidney, Guilford, 
  Sanford, Coventry, Greene, Oxford, Bainbridge, New Berlin, 
  Windsor, Afton and Morris.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

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

&&

LAT...LON 4214 7611 4260 7566 4264 7517 4264 7515
      4232 7541 4200 7539 4200 7543 4200 7544
      4200 7548 4200 7550 4200 7556 4200 7610
      4210 7611 4211 7611 4213 7611

FLASH FLOOD...RADAR INDICATED

$$

NICOSIA
236 
WGUS71 KBGM 180145
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
945 PM EDT Sat Jul 17 2021

NYC007-017-025-077-180155-
/O.CAN.KBGM.FF.W.0034.000000T0000Z-210718T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Broome NY-Chenango NY-Delaware NY-Otsego NY-
945 PM EDT Sat Jul 17 2021

...FLASH FLOOD WARNING IS CANCELLED FOR BROOME, CHENANGO, WEST 
CENTRAL DELAWARE AND WEST CENTRAL OTSEGO COUNTIES...

The heavy rain has ended. Please continue to heed remaining road 
closures.

A Flash Flood Watch remains in effect until 200 AM EDT for portions 
of central New York and northeast Pennsylvania.

LAT...LON 4214 7611 4260 7566 4264 7517 4264 7515
      4232 7541 4200 7539 4200 7543 4200 7544
      4200 7548 4200 7550 4200 7556 4200 7610
      4210 7611 4211 7611 4213 7611

$$

DJN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 9:39 AM EDTSpecial Weather StatementBGMSchuyler, Steuben, Yates36 min
Jul 17, 12:42 PM EDTSpecial Weather StatementBGMOtsego48 min
Jul 17, 1:29 PM EDTSpecial Weather StatementBGMOtsego31 min
Jul 17, 1:32 PM EDTAreal Flood AdvisoryBGMOtsego98 min
Jul 17, 2:04 PM EDTSevere Thunderstorm WarningBGMSteuben56 min
Jul 17, 2:14 PM EDTAreal Flood AdvisoryBGMSteuben110 min
Jul 17, 2:27 PM EDTTornado WarningBGMSteuben33 min
Jul 17, 2:57 PM EDTSevere Thunderstorm WarningBGMSteuben48 min
Jul 17, 3:05 PM EDTAreal Flood AdvisoryBGMSteuben115 min
Jul 17, 3:20 PM EDTAreal Flood AdvisoryBGMDelaware, Sullivan117 min
Jul 17, 3:42 PM EDTSpecial Weather StatementBGMSchuyler33 min
Jul 17, 3:50 PM EDTAreal Flood AdvisoryBGMDelaware86 min
Jul 17, 3:59 PM EDTSpecial Weather StatementBGMDelaware46 min
Jul 17, 4:01 PM EDTAreal Flood AdvisoryBGMChemung, Schuyler, Steuben, Tompkins63 min
Jul 17, 4:16 PM EDTSpecial Weather StatementBGMTompkins29 min
Jul 17, 4:30 PM EDTSevere Thunderstorm WarningBGMTompkins45 min
Jul 17, 4:55 PM EDTFlash Flood WarningBGMDelaware, Sullivan4 hr
Jul 17, 4:57 PM EDTSevere Thunderstorm WarningBGMBroome, Cortland, Tioga, Tompkins33 min
Jul 17, 5:12 PM EDTAreal Flood AdvisoryBGMBroome, Chemung, Cortland, Schuyler, Tioga, Tompkins55 min
Jul 17, 5:21 PM EDTSpecial Weather StatementBGMDelaware24 min
Jul 17, 5:23 PM EDTSevere Thunderstorm WarningBGMBroome67 min
Jul 17, 5:24 PM EDTSevere Thunderstorm WarningBGMTioga, Tompkins27 min
Jul 17, 5:28 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Cortland47 min
Jul 17, 5:36 PM EDTSevere Thunderstorm WarningBGMChenango, Delaware, Otsego39 min
Jul 17, 6:06 PM EDTAreal Flood AdvisoryBGMBroome, Chemung, Chenango, Cortland, Tioga94 min
Jul 17, 6:14 PM EDTSevere Thunderstorm WarningBGMChenango31 min
Jul 17, 6:20 PM EDTTornado WarningBGMChenango, Otsego25 min
Jul 17, 6:29 PM EDTSevere Thunderstorm WarningBGMSullivan28 min
Jul 17, 6:39 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Delaware, Tioga36 min
Jul 17, 6:59 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Tioga34 min
Jul 17, 7:06 PM EDTAreal Flood AdvisoryBGMBroome, Chenango, Delaware, Otsego2 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.