Alert archive / New York / Flash Flood Watches in 2021

Flash Flood Watch 13, NWS Binghamton, NY

October 29, 2021Chemung County, Steuben County, New York; Bradford County, Pennsylvania

NWS Binghamton, NY issued this flash flood watch at Oct 29, 2021, 2:55 PM EDT for Chemung County, Steuben County, New York; Bradford County, Pennsylvania. It took effect at Oct 29, 2021, 5:00 PM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Oct 29, 2021, 2:55 PM EDT (18:55 UTC)
In effect from
Oct 29, 2021, 5:00 PM EDT
Expired
Oct 30, 2021, 2:07 AM EDT
In force
9 hr
Issued by
NWS Binghamton, NY
Flood severity
None

Counties Chemung County, NY, Steuben County, NY, Bradford County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.9 hours before the alert went out and 177 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, Buffalo Intl Airport, NY at 12:00Z on 2021-10-29Temperature 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, Buffalo Intl Airport, NY at 12:00Z on 2021-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
815 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

084 
WGUS61 KBGM 291855
FFABGM

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Binghamton NY
255 PM EDT Fri Oct 29 2021

NYZ022-024-PAZ038-300300-
/O.NEW.KBGM.FF.A.0013.211029T2100Z-211030T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben-Chemung-Bradford-
Including the cities of Elmira, Hornell, Sayre, Corning, and Towanda
255 PM EDT Fri Oct 29 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

The National Weather Service in Binghamton has issued a

* Flash Flood Watch for portions of central New York and northeast 
  Pennsylvania, including the following areas, in central New York, 
  Chemung and Steuben. In northeast Pennsylvania, Bradford.

* Through late tonight.

* Steady, occasionally locally heavy rain begins to move into the 
  area this evening, continuing through the night. Totals in excess 
  of an inch are possible in the Watch area by early Saturday 
  morning.

* Given recent heavy rain, streams and rivers are running high. 
  Smaller creeks and streams could quickly over-top their banks 
  where heavy rain occurs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

HLC
2 follow-up statements
055 
WGUS61 KBGM 300136
FFABGM

Flood Watch
National Weather Service Binghamton NY
936 PM EDT Fri Oct 29 2021

NYZ022-024-PAZ038-300900-
/O.CON.KBGM.FF.A.0013.000000T0000Z-211030T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben-Chemung-Bradford-
Including the cities of Elmira, Hornell, Sayre, Corning, and Towanda
936 PM EDT Fri Oct 29 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM EDT SATURDAY...

The Flash Flood Watch continues for

* Portions of central New York and northeast Pennsylvania, including 
  the following areas, in central New York, Chemung and Steuben. In 
  northeast Pennsylvania, Bradford.

* Until 5 AM EDT Saturday.

* Steady, occasionally locally heavy rain continuing through the 
  night. Totals in excess of an inch are possible in the Watch area 
  by early Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

MWG
433 
WGUS61 KBGM 300607
FFABGM

Flood Watch
National Weather Service Binghamton NY
207 AM EDT Sat Oct 30 2021

NYZ022-024-PAZ038-300715-
/O.CAN.KBGM.FF.A.0013.000000T0000Z-211030T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Steuben-Chemung-Bradford-
Including the cities of Elmira, Hornell, Sayre, Corning, and Towanda
207 AM EDT Sat Oct 30 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of central New York and northeast 
Pennsylvania, including the following areas, in central New York, 
Chemung and Steuben. In northeast Pennsylvania, Bradford has been 
cancelled.

The Flash Flood Watch is cancelled. While flash flooding is no 
longer expected to pose a threat, there is still water and in some 
cases debris on several roadways. Please continue to heed any 
remaining road closures. Streams remain elevated as well.

$$

BJG

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 29, 7:17 PM EDTAreal Flood AdvisoryBGMChemung, Schuyler, Steuben, Yates4 hr

Nearby

Flash Flood Watches in New York, 2021Flash Flood Watches in Pennsylvania, 2021Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive.