Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 55, NWS Binghamton, NY

August 22, 2021Madison County, New York

NWS Binghamton, NY issued this flash flood warning at Aug 22, 2021, 8:52 PM EDT for Madison County, New York. It was in force for 3 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
Aug 22, 2021, 8:52 PM EDT (00:52 UTC)
Expired
Aug 23, 2021, 12:00 AM EDT
In force
3 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Madison County, NY

The radar

The Binghamton radar (KBGM), 77 km from the middle of the area, began a volume at 00:52 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

TimeReportWhereRemark
Aug 22, 10:00 PM EDTFLASH FLOOD1 W Eaton, NYFLOODING ALONG ROUTE 26 IN EATON.
Aug 22, 10:00 PM EDTFLASH FLOOD1 W Georgetown, NYFLOODING ON ROUTE 26 IN GEORGETOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.9 hours before the alert went out and 153 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, Albany, NY at 00:00Z on 2021-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Albany, NY at 00:00Z on 2021-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 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
757 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
376 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

948 
WGUS51 KBGM 230052
FFWBGM
NYC053-230400-
/O.NEW.KBGM.FF.W.0055.210823T0052Z-210823T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
852 PM EDT Sun Aug 22 2021

The National Weather Service in Binghamton has issued a

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

* Until midnight EDT.

* At 852 PM EDT, Doppler radar indicated tropical 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. 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...
  Morrisville, Nelson, Lebanon, Georgetown, Erieville, Pierceville, 
  South Lebanon, De Ruyter, Eaton, West Eaton and Sheds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4297 7563 4283 7557 4274 7556 4273 7587
      4290 7587

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

$$

JAB
1 follow-up statement
412 
WGUS71 KBGM 230249
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
1049 PM EDT Sun Aug 22 2021

NYC053-230400-
/O.CON.KBGM.FF.W.0055.000000T0000Z-210823T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Madison NY-
1049 PM EDT Sun Aug 22 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT 
FOR SOUTHWESTERN MADISON COUNTY...

At 1049 PM EDT, the public reported heavy rain and areas of flooding 
across the warned area. Between 1.5 and 2.5 inches of rain have 
fallen. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Public reported.

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...
  Morrisville, Nelson, Lebanon, Georgetown, Erieville, Pierceville, 
  South Lebanon, De Ruyter, Eaton, West Eaton and Sheds.

Water over Route 26 was reported in the Georgetown area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4297 7563 4283 7557 4274 7556 4273 7587
      4290 7587

FLASH FLOOD...OBSERVED

$$

JAB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 8:27 PM EDTAreal Flood AdvisoryBGMBroome, Chenango, Madison8 hr
Aug 22, 9:09 PM EDTFlash Flood WarningBGMChenango3 hr
Aug 22, 9:40 PM EDTAreal Flood AdvisoryBGMBroome, Cortland3 hr
Aug 22, 10:46 PM EDTAreal Flood AdvisoryBGMTioga, Tompkins2 hr
Aug 23, 12:13 AM EDTAreal Flood WarningBGMMadison3 hr
Aug 23, 12:13 AM EDTAreal Flood WarningBGMChenango3 hr

Nearby

Flash Flood Warnings in New York, 2021Every 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.