Alert archive / New York / Flash Flood Warnings in 2017

Flash Flood Warning 21, NWS Binghamton, NY

July 20, 20174 counties in New York; Bradford County, Susquehanna County, Pennsylvania

NWS Binghamton, NY issued this flash flood warning at Jul 20, 2017, 3:51 PM EDT for 4 counties in New York; Bradford County, Susquehanna County, Pennsylvania. It was in force for 6 hr. 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 20, 2017, 3:51 PM EDT (19:51 UTC)
Expired: Jul 20, 2017, 9:45 PM EDT
In force: 6 hr
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Flood severity: None

Counties Broome County, NY, Chemung County, NY, Steuben County, NY, Tioga County, NY, Bradford County, PA, Susquehanna County, PA

The radar

The Binghamton radar (KBGM), 48 km from the middle of the area, began a volume at 19:51 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, 4:17 PM EDT	FLASH FLOOD	Athens, PA	SIGNIFICANT AMOUNT OF WATER ACROSS THE ROAD
Jul 20, 4:17 PM EDT	FLASH FLOOD	Athens, PA	SIGNIFICANT AMOUNT OF WATER ACROSS THE ROAD.

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, 7.9 hours before the alert went out and 202 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: 2004 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

877 
WGUS51 KBGM 201951
FFWBGM
NYC007-015-101-107-PAC015-115-210145-
/O.NEW.KBGM.FF.W.0021.170720T1951Z-170721T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
351 PM EDT THU JUL 20 2017

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Western Broome County in central New York...
  Chemung County in central New York...
  Tioga County in central New York...
  Southeastern Steuben County in central New York...
  Northwestern Susquehanna County in northeastern Pennsylvania...
  Northern Bradford County in northeastern Pennsylvania...

* Until 945 PM EDT
  
* At 350 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area.

* Some locations that will experience flooding include...
  Chemung, Binghamton, Elmira, Vestal, Johnson City, Endicott,
  Southport, Barton, Big Flats and Horseheads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4234 7592 4189 7582 4172 7689 4200 7692
      4200 7713 4211 7716

$$

MSE

1 follow-up statement

998 
WGUS71 KBGM 202103
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
503 PM EDT THU JUL 20 2017

NYC007-015-101-107-PAC015-115-202112-
/O.CAN.KBGM.FF.W.0021.000000T0000Z-170721T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Broome NY-Chemung NY-Tioga NY-Steuben NY-Susquehanna PA-Bradford PA-
503 PM EDT THU JUL 20 2017

...THE FLASH FLOOD WARNING FOR WESTERN BROOME...CHEMUNG...TIOGA...
SOUTHEASTERN STEUBEN...NORTHWESTERN SUSQUEHANNA AND NORTHERN BRADFORD
COUNTIES IS CANCELLED...

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

LAT...LON 4234 7592 4189 7582 4172 7689 4200 7692
      4200 7713 4211 7716

$$

MSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 1:52 PM EDT	Flash Flood Watch	BGM	Cayuga, Cortland, Madison, Oneida, Onondaga, Schuyler and 4 more	3 hr
Jul 20, 1:57 PM EDT	Severe Thunderstorm Warning	BGM	Steuben	63 min
Jul 20, 2:57 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Steuben	33 min
Jul 20, 3:00 PM EDT	Areal Flood Advisory	BGM	Steuben	6 hr
Jul 20, 3:11 PM EDT	Areal Flood Advisory	BGM	Chemung, Schuyler, Steuben, Tompkins, Yates	6 hr
Jul 20, 3:19 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Schuyler, Tioga, Tompkins	26 min
Jul 20, 3:28 PM EDT	Flash Flood Warning	BGM	Chemung, Schuyler, Steuben, Tioga, Tompkins	3 hr
Jul 20, 3:44 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chemung, Tioga	46 min
Jul 20, 4:30 PM EDT	Areal Flood Advisory	BGM	Broome	6 hr
Jul 20, 5:44 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	46 min
Jul 20, 5:51 PM EDT	Areal Flood Advisory	BGM	Sullivan	3 hr
Jul 20, 3:29 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	61 min
Jul 20, 4:16 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	14 min
Jul 20, 4:28 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Lackawanna, Susquehanna, Wyoming	32 min
Jul 20, 4:47 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne, Wyoming	28 min
Jul 20, 4:59 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming	46 min
Jul 20, 5:12 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	48 min
Jul 20, 5:15 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming	3 hr
Jul 20, 5:42 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	63 min
Jul 20, 6:29 PM EDT	Severe Thunderstorm Warning	BGM	Pike	16 min

Nearby

Flash Flood Warnings in New York, 2017 Flash Flood Warnings in Pennsylvania, 2017 Every flash flood warning in 2017

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.