Alert archive / Pennsylvania / Flash Flood Warnings in 2012

Flash Flood Warning 54, NWS Philadelphia/Mount Holly

September 4, 2012Carbon County, Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 4, 2012, 7:33 PM EDT for Carbon County, Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 6 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: Sep 4, 2012, 7:33 PM EDT (23:33 UTC)
Expired: Sep 5, 2012, 1:30 AM EDT
In force: 6 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Warren County, NJ, Carbon County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 23:33 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
Sep 4, 10:06 PM EDT	FLASH FLOOD	Stroud Twp, PA	WATER ON ROADWAY
Sep 4, 10:55 PM EDT	FLASH FLOOD	Stroudsburg, PA	STANDING WATER ON ROADS AND POOR DRAINAGE AREAS.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.6 hours before the alert went out and 171 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: 869 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

328 
WGUS51 KPHI 042333
FFWPHI
NJC041-PAC025-089-095-050330-
/O.NEW.KPHI.FF.W.0054.120904T2333Z-120905T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
733 PM EDT TUE SEP 4 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WARREN COUNTY...
  SOUTHERN MONROE COUNTY...
  EAST CENTRAL CARBON COUNTY...
  NORTHAMPTON COUNTY...

* UNTIL 1130 PM EDT...

* AT 729 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER EAST CENTRAL CARBON...
  NORTHAMPTON...SOUTHERN MONROE AND WARREN COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO EASTON.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!

PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.

&&

LAT...LON 4079 7553 4090 7560 4098 7544 4108 7507
      4098 7493 4086 7483 4074 7500 4063 7532

$$

FORECASTER: HEAVENER

3 follow-up statements

846 
WGUS71 KPHI 050139
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
939 PM EDT TUE SEP 4 2012

PAC025-095-050149-
/O.CAN.KPHI.FF.W.0054.000000T0000Z-120905T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CARBON PA-NORTHAMPTON PA-
939 PM EDT TUE SEP 4 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHAMPTON AND
EAST CENTRAL CARBON COUNTIES...

THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 4098 7493 4093 7510 4097 7512 4095 7514
      4093 7521 4090 7524 4088 7527 4083 7544
      4094 7552 4096 7549 4108 7507

$$

NJC041-PAC089-050330-
/O.CON.KPHI.FF.W.0054.000000T0000Z-120905T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MONROE PA-
939 PM EDT TUE SEP 4 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
SOUTHERN MONROE AND NORTH CENTRAL WARREN COUNTIES...

AT 934 PM EDT...DOPPLER RADAR ESTIMATES CONTINUE TO INDICATE A
THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER NORTH CENTRAL WARREN AND
SOUTHERN MONROE COUNTIES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED 
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.

&&

LAT...LON 4098 7493 4093 7510 4097 7512 4095 7514
      4093 7521 4090 7524 4088 7527 4083 7544
      4094 7552 4096 7549 4108 7507

$$

FORECASTER: HEAVENER

036 
WGUS71 KPHI 050141
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
941 PM EDT TUE SEP 4 2012

NJC041-PAC025-089-095-050330-
/O.CON.KPHI.FF.W.0054.000000T0000Z-120905T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MONROE PA-CARBON PA-NORTHAMPTON PA-
941 PM EDT TUE SEP 4 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
NORTHERN NORTHAMPTON...EAST CENTRAL CARBON...SOUTHERN MONROE AND
NORTH CENTRAL WARREN COUNTIES...

AT 938 PM EDT...DOPPLER RADAR ESTIMATES CONTINUE TO INDICATE A
THUNDERSTORM PRODUCING VERY HEAVY RAIN.  THIS STORM WAS LOCATED NEAR
EAST STROUDSBURG...OR 22 MILES NORTH OF EASTON...MOVING NORTHEAST AT
30 MPH.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.

&&

LAT...LON 4095 7496 4082 7537 4078 7552 4079 7553
      4090 7560 4098 7544 4108 7507 4098 7493

$$

FORECASTER:PO

332 
WGUS51 KPHI 050311
FFWPHI
NJC041-PAC025-089-095-050530-
/O.EXT.KPHI.FF.W.0054.000000T0000Z-120905T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1111 PM EDT TUE SEP 4 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL WARREN COUNTY...
  SOUTHERN MONROE COUNTY...
  EAST CENTRAL CARBON COUNTY...
  NORTHERN NORTHAMPTON COUNTY...

* UNTIL 130 AM EDT...

* AT 1105 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  ADDITIONAL HEAVY RAIN MOVING INTO THE AREA FROM THE SOUTHWEST.
  ANOTHER INCH OR TWO OF RAIN MAY FALL AT SOME LOCATIONS IN A SHORT
  AMOUNT OF TIME. AS A RESULT...THE FLASH FLOOD WARNING HAS BEEN
  EXTENDED.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BLAIRSTOWN...BRODHEADSVILLE...EAST BANGOR...EAST STROUDSBURG...PEN
  ARGYL...WIND GAP...COLUMBIA...GILBERT...KRESGEVILLE...KUNKLETOWN...
  ROSSLAND...SAYLORSBURG AND STORMVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4095 7496 4082 7537 4078 7552 4079 7553
      4090 7560 4098 7544 4108 7507 4098 7493

$$

IOVINO

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 4, 12:13 AM EDT	Areal Flood Advisory	PHI	Chester	111 min
Sep 4, 3:41 AM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery, Philadelphia	2 hr
Sep 4, 4:00 AM EDT	Flash Flood Warning	PHI	Bucks, Montgomery, Philadelphia	84 min
Sep 4, 12:08 PM EDT	Areal Flood Warning	PHI	Bucks, Montgomery, Philadelphia	4 hr
Sep 4, 12:15 PM EDT	Areal Flood Warning	PHI	Berks, Chester, Delaware, Montgomery, Philadelphia	106 min
Sep 4, 1:47 PM EDT	Flash Flood Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	3 hr
Sep 4, 2:22 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	4 hr
Sep 4, 2:59 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	61 min
Sep 4, 3:11 PM EDT	River Flood Warning	PHI	Delaware	50 min
Sep 4, 3:32 PM EDT	Areal Flood Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	4 hr
Sep 4, 3:40 PM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	4 hr
Sep 4, 4:37 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	3 hr
Sep 4, 5:22 PM EDT	Special Weather Statement	PHI	Philadelphia	53 min
Sep 4, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	65 min
Sep 4, 6:34 PM EDT	Special Weather Statement	PHI	Lehigh	56 min
Sep 4, 7:01 PM EDT	Areal Flood Warning	PHI	Philadelphia	55 min
Sep 4, 7:06 PM EDT	Areal Flood Advisory	PHI	Bucks, Carbon, Lehigh, Monroe, Northampton	114 min
Sep 3, 9:28 PM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	3 hr
Sep 4, 12:05 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Monmouth, Ocean	4 hr
Sep 4, 1:25 AM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	4 hr
Sep 4, 1:34 AM EDT	Flash Flood Warning	PHI	Burlington, Ocean	6 hr
Sep 4, 1:55 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester	4 hr
Sep 4, 3:48 AM EDT	Areal Flood Advisory	PHI	Ocean	3 hr
Sep 4, 4:44 AM EDT	Areal Flood Advisory	PHI	Ocean	2 hr
Sep 4, 4:55 AM EDT	Small Craft Advisory	PHI		47 hr
Sep 4, 6:47 AM EDT	Areal Flood Warning	PHI	Burlington, Ocean	3 hr
Sep 4, 12:39 PM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	56 hr
Sep 4, 1:13 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	62 min
Sep 4, 1:36 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	4 hr
Sep 4, 1:58 PM EDT	Special Weather Statement	PHI	Burlington	62 min
Sep 4, 2:11 PM EDT	Special Weather Statement	PHI	Monmouth	34 min
Sep 4, 3:13 PM EDT	Tornado Warning	PHI	Burlington, Ocean	32 min
Sep 4, 4:13 PM EDT	Areal Flood Advisory	PHI	Burlington, Monmouth, Ocean	54 min
Sep 4, 6:02 PM EDT	Areal Flood Warning	PHI	Burlington	16 hr
Sep 4, 6:30 PM EDT	Tornado Warning	PHI	Burlington, Camden	30 min
Sep 4, 7:15 PM EDT	Special Weather Statement	PHI	Mercer	60 min

Nearby

Flash Flood Warnings in Pennsylvania, 2012 Flash Flood Warnings in New Jersey, 2012 Every flash flood warning in 2012

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.