Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 37, NWS Binghamton, NY

July 17, 2021Sullivan County, New York

NWS Binghamton, NY issued this flash flood warning at Jul 17, 2021, 8:41 PM EDT for Sullivan County, New York. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 17, 2021, 8:41 PM EDT (00:41 UTC)
Expired
Jul 17, 2021, 10:34 PM EDT
In force
113 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Sullivan County, NY

The radar

The Albany radar (KENX), 111 km from the middle of the area, began a volume at 00:42 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.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.7 hours before the alert went out and 131 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 2021-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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 2021-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
30 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
630 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

544 
WGUS51 KBGM 180041
FFWBGM
NYC105-180345-
/O.NEW.KBGM.FF.W.0037.210718T0041Z-210718T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
841 PM EDT Sat Jul 17 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Central Sullivan County in central New York...

* Until 1145 PM EDT.

* At 841 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 up to 2 inches are possible in 
  the warned area. 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...
  Monticello, Liberty, Fallsburg, Bethel, Neversink, South 
  Fallsburg, Woodridge, Harris, Maplewood, Hurleyville, Mongaup 
  Valley, Kiamesha, Swan Lake, Loch Sheldrake, Thompsonville, 
  Smallwood, White Lake, Woodbourne, White Sulphur Springs and 
  Parksville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4164 7439 4162 7439 4148 7493 4148 7494
      4167 7505 4195 7462 4188 7445 4175 7458

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

$$

NICOSIA
2 follow-up statements
419 
WGUS71 KBGM 180202
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
1002 PM EDT Sat Jul 17 2021

NYC105-180345-
/O.CON.KBGM.FF.W.0037.000000T0000Z-210718T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sullivan NY-
1002 PM EDT Sat Jul 17 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT THIS 
EVENING FOR CENTRAL SULLIVAN COUNTY...

At 1002 PM EDT, Doppler radar indicated that the heaviest rain has 
weakened and moved east of the warned area. Between 1.5 and 3 inches 
of rain have fallen. Additional rainfall amounts up to 1 inch are 
possible in the warned area. Flash flooding is ongoing or expected 
to begin shortly.

HAZARD...Flash flooding caused by heavy rain.

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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4164 7439 4162 7439 4148 7493 4148 7494
      4167 7505 4195 7462 4188 7445 4175 7458

FLASH FLOOD...RADAR INDICATED

$$

NICOSIA
901 
WGUS71 KBGM 180234
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
1034 PM EDT Sat Jul 17 2021

NYC105-180244-
/O.CAN.KBGM.FF.W.0037.000000T0000Z-210718T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sullivan NY-
1034 PM EDT Sat Jul 17 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL SULLIVAN COUNTY...

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



LAT...LON 4164 7439 4162 7439 4148 7493 4148 7494
      4167 7505 4195 7462 4188 7445 4175 7458

$$

Kistner

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 8:11 PM EDTSpecial Weather StatementBGMDelaware, Sullivan49 min
Jul 17, 8:24 PM EDTFlash Flood WarningBGMSteuben114 min
Jul 17, 8:27 PM EDTFlash Flood WarningBGMOtsego77 min
Jul 18, 12:48 AM EDTAreal Flood AdvisoryBGMSteuben3 hr
Jul 18, 2:22 AM EDTAreal Flood AdvisoryBGMChemung, Steuben2 hr
Jul 18, 11:34 AM EDTAreal Flood AdvisoryBGMDelaware3 hr
Jul 18, 12:19 PM EDTAreal Flood AdvisoryBGMDelaware, Otsego3 hr
Jul 18, 3:41 PM EDTAreal Flood AdvisoryBGMDelaware4 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.