Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 20, NWS Binghamton, NY

July 12, 2021Cayuga County, Seneca County, Tompkins County, New York

NWS Binghamton, NY issued this flash flood warning at Jul 12, 2021, 1:11 AM EDT for Cayuga County, Seneca County, Tompkins County, New York. It was in force for 3 hr. 1 report 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 12, 2021, 1:11 AM EDT (05:11 UTC)
Expired: Jul 12, 2021, 4:15 AM EDT
In force: 3 hr
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Flood severity: None

Counties Cayuga County, NY, Seneca County, NY, Tompkins County, NY

The radar

The Binghamton radar (KBGM), 74 km from the middle of the area, began a volume at 05:11 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

Time	Report	Where	Remark
Jul 12, 1:55 AM EDT	FLOOD	1 Nw Edgewater, NY	WATER COVERING ROUTE 38.

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 00:00Z, 5.2 hours before the alert went out and 173 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 947 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

170 
WGUS51 KBGM 120511
FFWBGM
NYC011-099-109-120815-
/O.NEW.KBGM.FF.W.0020.210712T0511Z-210712T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
111 AM EDT Mon Jul 12 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Cayuga County in central New York...
  Southeastern Seneca County in central New York...
  Northwestern Tompkins County in central New York...

* Until 415 AM EDT.

* At 111 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2 inches of 
  rain have fallen. Additional rainfall amounts up 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...
  Owasco, Covert, Genoa, Ledyard, Trumansburg, Moravia, Interlaken, 
  King Ferry, Venice Center, Scipio Center, Cascade, Casowasco, 
  Kidders, Sheldrake, Montville, East Venice, East Genoa, Lake 
  Ridge, Lansingville and Merrifield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4270 7671 4273 7667 4285 7645 4277 7634
      4268 7642 4254 7664 4256 7676 4262 7680

FLASH FLOOD...RADAR INDICATED

$$

BJT

2 follow-up statements

775 
WGUS71 KBGM 120608
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
208 AM EDT Mon Jul 12 2021

NYC011-099-109-120815-
/O.CON.KBGM.FF.W.0020.000000T0000Z-210712T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cayuga NY-Seneca NY-Tompkins NY-
208 AM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM EDT EARLY THIS 
MORNING FOR CAYUGA, SOUTHEASTERN SENECA AND NORTHWESTERN TOMPKINS 
COUNTIES...

At 208 AM EDT, Doppler radar indicated heavy rain across the warned 
area. Between 1.5 and 2.5 inches of rain have fallen. Flash flooding 
is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  Owasco, Covert, Genoa, Ledyard, Trumansburg, Moravia, Interlaken, 
  King Ferry, Venice Center, Scipio Center, Cascade, Casowasco, 
  Kidders, Sheldrake, Montville, East Venice, East Genoa, Lake 
  Ridge, Lansingville and Merrifield.

Heavy rain has ended across the warned area, but persistent runoff 
will allow some roads to remain flooded into the early morning hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4270 7671 4273 7667 4285 7645 4277 7634
      4268 7642 4254 7664 4256 7676 4262 7680

FLASH FLOOD...RADAR INDICATED

$$

BJT

741 
WGUS71 KBGM 120807
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
407 AM EDT Mon Jul 12 2021

NYC011-099-109-120817-
/O.EXP.KBGM.FF.W.0020.000000T0000Z-210712T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cayuga NY-Seneca NY-Tompkins NY-
407 AM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 415 AM EDT EARLY THIS MORNING 
FOR CAYUGA, SOUTHEASTERN SENECA AND NORTHWESTERN TOMPKINS COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

A Flash Flood Watch remains in effect until 1200 PM EDT Monday for a 
portion of central New York.

LAT...LON 4270 7671 4273 7667 4285 7645 4277 7634
      4268 7642 4254 7664 4256 7676 4262 7680

$$

MJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:29 PM EDT	Areal Flood Advisory	BGM	Chenango, Delaware, Otsego	51 min
Jul 11, 9:20 PM EDT	Flash Flood Warning	BGM	Chenango, Delaware, Otsego	2 hr
Jul 12, 12:33 AM EDT	Areal Flood Advisory	BGM	Cayuga, Schuyler, Seneca, Tompkins	3 hr
Jul 12, 1:41 AM EDT	Areal Flood Advisory	BGM	Cayuga, Cortland, Onondaga	3 hr
Jul 12, 4:44 AM EDT	Areal Flood Advisory	BGM	Oneida	3 hr
Jul 12, 5:16 AM EDT	Areal Flood Warning	BGM	Oneida	3 hr
Jul 12, 5:22 AM EDT	Areal Flood Warning	BGM	Madison, Onondaga	118 min
Jul 12, 5:31 AM EDT	Areal Flood Advisory	BGM	Sullivan	3 hr
Jul 12, 6:06 AM EDT	Flash Flood Warning	BGM	Sullivan	3 hr
Jul 12, 9:22 AM EDT	River Flood Warning	BGM	Delaware	4 hr
Jul 12, 10:58 AM EDT	Flash Flood Watch	BGM	Broome, Chemung, Chenango, Delaware, Steuben, Sullivan and 1 more	15 hr
Jul 12, 4:08 PM EDT	Areal Flood Advisory	BGM	Steuben	30 min
Jul 12, 4:38 PM EDT	Flash Flood Warning	BGM	Steuben	77 min
Jul 12, 4:50 PM EDT	Areal Flood Advisory	BGM	Steuben	65 min
Jul 12, 5:12 PM EDT	Areal Flood Advisory	BGM	Broome, Chemung, Chenango, Tioga	108 min
Jul 12, 5:19 PM EDT	Special Weather Statement	BGM	Broome	41 min
Jul 12, 6:37 PM EDT	Flash Flood Warning	BGM	Broome, Tioga	3 hr
Jul 12, 7:05 PM EDT	Flash Flood Warning	BGM	Chemung, Tioga	3 hr
Jul 12, 7:45 PM EDT	Tornado Warning	BGM	Delaware	30 min

Nearby

Flash Flood Warnings in New York, 2021 Every 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.