Alert archive / Pennsylvania / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Binghamton, NY

July 12, 2021Bradford County, Pennsylvania

NWS Binghamton, NY issued this flash flood warning at Jul 12, 2021, 8:33 PM EDT for Bradford County, Pennsylvania. It was in force for 3 hr. 3 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 12, 2021, 8:33 PM EDT (00:33 UTC)
Expired: Jul 12, 2021, 11:45 PM EDT
In force: 3 hr
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Flood severity: None

County Bradford County, PA

The radar

The Binghamton radar (KBGM), 73 km from the middle of the area, began a volume at 00:37 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 12, 9:29 PM EDT	FLASH FLOOD	Franklindale, PA	ROADS FLOODED AND A MUDSLIDE.
Jul 12, 10:00 PM EDT	FLASH FLOOD	1 Ese New Albany, PA	ROUTE 220 FLOODED.
Jul 12, 10:00 PM EDT	FLASH FLOOD	Franklindale, PA	ROADS FLOODED.

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 00:00Z, 0.6 hours before the alert went out and 230 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: 23 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

718 
WGUS51 KBGM 130033
FFWBGM
PAC015-130345-
/O.NEW.KBGM.FF.W.0026.210713T0033Z-210713T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
833 PM EDT Mon Jul 12 2021

The National Weather Service in Binghamton has issued a

* Flash Flood Warning for...
  Southern Bradford County in northeastern Pennsylvania...

* Until 1145 PM EDT.

* At 833 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 2 
  inches in 1 hour. Additional rainfall amounts of 2 to 3 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...
  Canton, Wyalusing, New Albany, Overton, South Branch, Monroeton, 
  Franklindale, Le Roy, Sugar Run, Camptown, Grover, West Franklin, 
  Wilmot, Hollenback, Monroe, Alba, Liberty Corners, Evergreen, 
  Durell and Terrytown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4172 7689 4177 7616 4165 7618 4164 7620
      4154 7622 4160 7687

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

$$

NICOSIA

1 follow-up statement

305 
WGUS71 KBGM 130114
FFSBGM

Flash Flood Statement
National Weather Service Binghamton NY
914 PM EDT Mon Jul 12 2021

PAC015-130345-
/O.CON.KBGM.FF.W.0026.000000T0000Z-210713T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bradford PA-
914 PM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT THIS 
EVENING FOR SOUTHERN BRADFORD COUNTY...

At 914 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 2 to 2.5 inches in 1 hour. 
Additional rainfall amounts of 2 to 3 inches are expected in the 
warned area. Flash flooding is ongoing. There were reports of many 
roads flooded, washouts and several homes flooded.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
Canton, Wyalusing, New Albany, Overton, South Branch, Monroeton, 
Franklindale, Le Roy, Sugar Run, Camptown, Grover, West Franklin, 
Wilmot, Hollenback, Monroe, Alba, Liberty Corners, Evergreen, Durell 
and Terrytown.

Towanda Creek and other creeks in southern Bradford County could see 
major flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4172 7689 4177 7616 4165 7618 4164 7620
      4154 7622 4160 7687

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...2-2.5 INCHES IN 1 HOUR

$$

NICOSIA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:17 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	43 min
Jul 12, 8:29 PM EDT	Flash Flood Warning	BGM	Susquehanna, Wayne	2 hr
Jul 12, 8:59 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	46 min
Jul 12, 9:43 PM EDT	Severe Thunderstorm Warning	BGM	Bradford, Susquehanna, Wyoming	47 min
Jul 12, 9:54 PM EDT	Flash Flood Warning Considerable damage threat	BGM	Bradford	2 hr
Jul 12, 10:09 PM EDT	Flash Flood Warning	BGM	Susquehanna, Wyoming	3 hr
Jul 12, 10:28 PM EDT	Special Weather Statement	BGM	Wyoming	32 min
Jul 12, 10:35 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Susquehanna, Wyoming	40 min
Jul 12, 10:59 PM EDT	Areal Flood Advisory	BGM	Wayne	2 hr
Jul 12, 11:09 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Pike, Susquehanna, Wayne	51 min
Jul 12, 11:17 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Susquehanna	118 min
Jul 12, 11:38 PM EDT	Areal Flood Advisory	BGM	Lackawanna, Susquehanna, Wayne	112 min
Jul 12, 11:46 PM EDT	Flash Flood Warning	BGM	Bradford	3 hr
Jul 12, 11:58 PM EDT	Special Weather Statement	BGM	Lackawanna, Wayne	47 min
Jul 13, 12:25 AM EDT	Areal Flood Advisory	BGM	Lackawanna, Luzerne	2 hr
Jul 13, 12:54 AM EDT	Areal Flood Advisory	BGM	Lackawanna, Pike, Wayne	2 hr
Jul 13, 1:33 AM EDT	Areal Flood Advisory	BGM	Lackawanna	81 min
Jul 13, 12:48 PM EDT	Flash Flood Watch	BGM	Bradford, Lackawanna, Luzerne, Susquehanna, Wyoming	11 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2021 Every 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.