Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 41, NWS Binghamton, NY

July 20, 2021Steuben County, New York

NWS Binghamton, NY issued this flash flood warning at Jul 20, 2021, 8:49 PM EDT for Steuben 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 20, 2021, 8:49 PM EDT (00:49 UTC)
Expired: Jul 20, 2021, 11:30 PM EDT
In force: 3 hr
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Flood severity: None

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 112 km from the middle of the area, began a volume at 00:50 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 20, 9:17 PM EDT	FLASH FLOOD	2 S Cameron Mills, NY	TRACY CREEK IS FLOODING NEAR TRACY CREEK RD AND RICHTMEYER RD.

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, 0.8 hours before the alert went out and 138 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: 1459 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -176 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

600 
WGUS51 KBGM 210049
FFWBGM
NYC101-210345-
/O.NEW.KBGM.FF.W.0041.210721T0049Z-210721T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
849 PM EDT Tue Jul 20 2021

The National Weather Service in Binghamton has issued a

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

* Until 1145 PM EDT.

* At 849 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 2.5 inches of 
  rain have fallen. 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...
  Campbell, Painted Post, Thurston, Cameron, Savona, West Cameron, 
  Coopers Plains, Gang Mills, Risingville, Cameron Mills and North 
  Cameron.

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.

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 4226 7745 4228 7719 4217 7707 4209 7740
      4214 7747

FLASH FLOOD...RADAR INDICATED

$$

Kistner

2 follow-up statements

826 
WGUS71 KBGM 210140
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
940 PM EDT Tue Jul 20 2021

NYC101-210345-
/O.CON.KBGM.FF.W.0041.000000T0000Z-210721T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben NY-
940 PM EDT Tue Jul 20 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT THIS 
EVENING FOR SOUTHEASTERN STEUBEN COUNTY...

At 940 PM EDT, Law enforcement has reported county route 80 near the 
route 110 intersection was flooded. Between 2.5 and 3 inches of rain 
has fallen and another thunderstorm is moving into the area. Flash 
flooding is ongoing.

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...
  Campbell, Painted Post, Thurston, Cameron, Savona, West Cameron, 
  Coopers Plains, Gang Mills, Risingville, Cameron Mills and North 
  Cameron.

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.

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

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 4226 7745 4228 7719 4217 7707 4209 7740
      4214 7747

FLASH FLOOD...RADAR INDICATED

$$

Kistner

149 
WGUS71 KBGM 210330
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
1130 PM EDT Tue Jul 20 2021

NYC101-210340-
/O.CAN.KBGM.FF.W.0041.000000T0000Z-210721T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben NY-
1130 PM EDT Tue Jul 20 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN STEUBEN 
COUNTY...

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

LAT...LON 4226 7745 4228 7719 4217 7707 4209 7740
      4214 7747

$$

Kistner

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:05 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Delaware, Madison, Otsego and 1 more	55 min
Jul 20, 8:28 PM EDT	Flash Flood Warning	BGM	Chenango, Otsego	2 hr
Jul 20, 8:31 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chemung, Schuyler, Tioga, Tompkins	59 min
Jul 20, 8:58 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Otsego	45 min
Jul 20, 9:28 PM EDT	Flash Flood Warning	BGM	Broome, Chenango	3 hr
Jul 20, 9:28 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware, Tioga	62 min
Jul 20, 9:36 PM EDT	Special Weather Statement	BGM	Steuben	24 min
Jul 20, 9:59 PM EDT	Special Weather Statement	BGM	Steuben	31 min
Jul 20, 10:28 PM EDT	Special Weather Statement	BGM	Chemung	32 min
Jul 20, 10:54 PM EDT	Flash Flood Warning	BGM	Chemung	3 hr

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.