Alert archive / Pennsylvania / Flash Flood Warnings in 2012

Flash Flood Warning 9, NWS Philadelphia/Mount Holly

May 29, 2012Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at May 29, 2012, 6:23 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 112 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: May 29, 2012, 6:23 PM EDT (22:23 UTC)
Expired: May 29, 2012, 8:15 PM EDT
In force: 112 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Carbon County, PA, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 22:25 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.4 hours before the alert went out and 182 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: 667 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 1153 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

193 
WGUS51 KPHI 292223
FFWPHI
PAC025-089-300015-
/O.NEW.KPHI.FF.W.0009.120529T2223Z-120530T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
623 PM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MONROE COUNTY...
  SOUTHERN CARBON COUNTY...

* UNTIL 815 PM EDT...

* AT 612 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS MOVING OVER SOUTHERN CARBON AND 
  SOUTHERN MONROE COUNTIES.  PORTIONS OF THIS AREA WERE HIT BY
  EXCESSIVE RAIN THIS PAST WEEKEND.  IF MORE THAN 1.2 INCHES OF RAIN
  FALLS IN AN HOUR...FLASH FLOODING WILL OCCUR.  

THE RAIN MAY BRIEFLY ABATE BUT MORE HEAVY SHOWERS AND THUNDERSTORMS
WERE HEADED NORTHEAST AND MAY CONTRIBUTE MORE RUNOFF BETWEEN 7 AND 8 
PM. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LEHIGHTON...BRODHEADSVILLE...SAYLORSBURG...ROSSLAND...STROUDSBURG...
LANSFORD.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 4109 7503 4110 7500 4109 7498 4100 7511
      4093 7519 4093 7521 4086 7530 4078 7568
      4074 7577 4085 7591 4113 7525 4113 7506

$$

DRAG

1 follow-up statement

539 
WGUS71 KPHI 292344
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
744 PM EDT TUE MAY 29 2012

PAC025-089-300015-
/O.CON.KPHI.FF.W.0009.000000T0000Z-120530T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE PA-CARBON PA-
744 PM EDT TUE MAY 29 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR
SOUTHERN CARBON AND SOUTHERN MONROE COUNTIES...

AT 740 PM EDT...DOPPLER RADAR INDICATES THE HEAVIEST RAINS HAVE 
DIMINISHED.  SHOWERS AND EMBEDDED THUNDERSTORMS WILL CONTINUE THIS 
EVENING. 

THE WARNING WILL BE ALLOWED TO EXPIRE AND MAY BE UPDATED LATER THIS 
EVENING WITH A LESSER THREATENING ADVISORY OR WARNING.

A MUDSLIDE HAS BEEN REPORTED IN PALMERTON OF CARBON COUNTY.  

DOPPLER RADAR INDICATES MOST OF THE WARNED AREA RECEIVED ONE HALF TO 
1.5 INCHES OF RAIN THIS EVENING WITH ISOLATED 2.5 INCH AMOUNTS NEAR 
PALMERTON AND NEW MAHONING. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BRODHEADSVILLE...EAST STROUDSBURG...JIM THORPE...LEHIGHTON...
NESQUEHONING...PALMERTON...DELAWARE WATER GAP...ALPINE MOUNTAIN...
ANALOMINK...BELTZVILLE STATE PARK...ECHO LAKE...GILBERT...
HERNYVILLE...JONAS...MECKESVILLE...NEW MAHONING...PENN FOREST
RESERVOIR...REEDERS...ROSSLAND...SAYLORSBURG...SCOTRUN 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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

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 4109 7503 4110 7500 4109 7498 4100 7511
      4093 7519 4093 7521 4086 7530 4078 7568
      4074 7577 4085 7591 4113 7525 4113 7506

$$
DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 12:29 PM EDT	Flash Flood Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	8 hr
May 29, 1:36 PM EDT	Special Weather Statement	PHI	Monroe	54 min
May 29, 1:50 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	115 min
May 29, 5:06 PM EDT	Special Weather Statement	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	114 min
May 29, 5:25 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	95 min
May 29, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	75 min
May 29, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	91 min
May 29, 6:44 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Lehigh, Montgomery	3 hr
May 29, 6:46 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	89 min
May 29, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Montgomery	53 min
May 29, 7:34 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	56 min
May 29, 7:35 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	115 min
May 29, 7:44 PM EDT	Special Weather Statement	PHI	Bucks	61 min

Nearby

Flash Flood Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.