Alert archive / Pennsylvania / Flash Flood Warnings in 2021

Flash Flood Warning 59, NWS Binghamton, NY

August 26, 2021Wyoming County, Pennsylvania

NWS Binghamton, NY issued this flash flood warning at Aug 26, 2021, 4:23 PM EDT for Wyoming County, Pennsylvania. It was in force for 101 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
Aug 26, 2021, 4:23 PM EDT (20:23 UTC)
Expired
Aug 26, 2021, 6:04 PM EDT
In force
101 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Wyoming County, PA

The radar

The Binghamton radar (KBGM), 84 km from the middle of the area, began a volume at 20:23 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 12:00Z, 8.4 hours before the alert went out and 237 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 12:00Z on 2021-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 467 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 12:00Z on 2021-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939Sfc1 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
467 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1073 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

491 
WGUS51 KBGM 262023
FFWBGM
PAC131-262315-
/O.NEW.KBGM.FF.W.0059.210826T2023Z-210826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
423 PM EDT Thu Aug 26 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Southwestern Wyoming County in northeastern Pennsylvania...

* Until 715 PM EDT.

* At 423 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. The expected rainfall rate is 1.5 inches in 1 
  hour. Additional rainfall amounts of 1 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...
  Kasson Brook and Stull.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

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

&&

LAT...LON 4149 7623 4151 7614 4148 7605 4138 7609
      4138 7628

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1.5 INCHES IN 1 HOUR

$$

BJT
2 follow-up statements
750 
WGUS71 KBGM 262056
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
456 PM EDT Thu Aug 26 2021

PAC131-262315-
/O.CON.KBGM.FF.W.0059.000000T0000Z-210826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyoming PA-
456 PM EDT Thu Aug 26 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM EDT THIS 
EVENING FOR SOUTHWESTERN WYOMING COUNTY...

At 456 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 3 inches of rain have 
fallen. 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 and streets
         as well as other poor drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Kasson Brook and Stull.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4149 7623 4151 7614 4148 7605 4138 7609
      4138 7628

FLASH FLOOD...RADAR INDICATED

$$

BJT
424 
WGUS71 KBGM 262204
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
604 PM EDT Thu Aug 26 2021

PAC131-262214-
/O.CAN.KBGM.FF.W.0059.000000T0000Z-210826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyoming PA-
604 PM EDT Thu Aug 26 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN WYOMING 
COUNTY...

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

LAT...LON 4149 7623 4151 7614 4148 7605 4138 7609
      4138 7628

$$

BJT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 2:35 PM EDTSpecial Weather StatementBGMSullivan25 min
Aug 26, 3:30 PM EDTSpecial Weather StatementBGMWyoming45 min
Aug 26, 3:34 PM EDTSevere Thunderstorm WarningBGMLuzerne, Wyoming26 min
Aug 26, 3:48 PM EDTSevere Thunderstorm WarningBGMLuzerne, Wyoming57 min
Aug 26, 3:55 PM EDTAreal Flood AdvisoryBGMLuzerne, Wyoming2 hr
Aug 26, 4:33 PM EDTSevere Thunderstorm WarningBGMLuzerne24 min
Aug 26, 4:37 PM EDTSpecial Weather StatementBGMWayne38 min
Aug 26, 5:12 PM EDTSpecial Weather StatementBGMPike33 min
Aug 26, 5:20 PM EDTSevere Thunderstorm WarningBGMPike, Wayne40 min
Aug 26, 5:27 PM EDTSpecial Weather StatementBGMSusquehanna33 min
Aug 26, 5:37 PM EDTSevere Thunderstorm WarningBGMLackawanna, Susquehanna25 min

Nearby

Flash Flood Warnings in Pennsylvania, 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.