Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 22, NWS Binghamton, NY

July 12, 2021Steuben County, New York

NWS Binghamton, NY issued this flash flood warning at Jul 12, 2021, 4:38 PM EDT for Steuben County, New York. It was in force for 77 min. 2 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 12, 2021, 4:38 PM EDT (20:38 UTC)
Expired: Jul 12, 2021, 5:55 PM EDT
In force: 77 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Flood severity: None

County Steuben County, NY

The radar

The Buffalo radar (KBUF), 130 km from the middle of the area, began a volume at 20:42 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, 5:00 PM EDT	FLASH FLOOD	2 E Young Hickory, NY	ROADS FLOODED AND WASHED OUT.
Jul 12, 5:15 PM EDT	FLASH FLOOD	1 Wnw Greenwood, NY	ROADS FLOODED.

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, 8.6 hours before the alert went out and 127 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: 524 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

598 
WGUS51 KBGM 122038
FFWBGM
NYC101-122330-
/O.NEW.KBGM.FF.W.0022.210712T2038Z-210712T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Binghamton has issued a

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

* Until 730 PM EDT.

* At 438 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 2 to 3 inches are possible in 
  the warned area. Flash flooding is 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...
  Jasper, Troupsburg, Greenwood, Young Hickory, Willeyville and West 
  Greenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4221 7761 4220 7749 4200 7749 4200 7750
      4200 7751 4200 7775 4211 7775 4212 7774
      4213 7774 4221 7774

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

$$

DJN

1 follow-up statement

866 
WGUS71 KBGM 122155
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
555 PM EDT Mon Jul 12 2021

NYC101-122205-
/O.CAN.KBGM.FF.W.0022.000000T0000Z-210712T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben NY-
555 PM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN 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 4221 7761 4220 7749 4200 7749 4200 7750
      4200 7751 4200 7775 4211 7775 4212 7774
      4213 7774 4221 7774

$$

DJN

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, 1:11 AM EDT	Flash Flood Warning	BGM	Cayuga, 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, 4:50 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.