Alert archive / Pennsylvania / Flash Flood Warnings in 2011

Flash Flood Warning 45, NWS Philadelphia/Mount Holly

August 28, 2011Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 28, 2011, 5:17 AM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 10 hr. 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 28, 2011, 5:17 AM EDT (09:17 UTC)
Expired
Aug 28, 2011, 3:15 PM EDT
In force
10 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 136 km from the middle of the area, began a volume at 09:19 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

Brookhaven, NY (KOKX), launched 00:00Z, 9.3 hours before the alert went out and 217 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, Brookhaven, NY at 00:00Z on 2011-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 957 joules per kilogram.LCLEL10008507005003002001001 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, Brookhaven, NY at 00:00Z on 2011-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.19395878Sfc1 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
957 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
269 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.

214 
WGUS51 KPHI 280917
FFWPHI
PAC025-089-281515-
/O.NEW.KPHI.FF.W.0045.110828T0917Z-110828T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
517 AM EDT SUN AUG 28 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 1115 AM EDT...

* AT 512 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  BANDS OF VERY HEAVY RAIN FROM IRENE CONTINUING TO CIRCULATE AND    
  REDEVELOP OVER NEW JERSEY AND EASTERN PENNSYLVANIA.

  THIS FLASH FLOOD WARNING INCLUDES CARBON AND MONROE COUNTIES. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LEHIGHTON  
  AND MOUNT POCONO.

ONE TO THREE AND ONE-HALF INCHES OF RAIN HAVE ALREADY FALLEN ACROSS 
THE WARNED AREA. ADDITIONAL RAINFALL AMOUNTS OF TWO TO THREE INCHES 
ARE EXPECTED THROUGH ABOUT MIDDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4126 7514 4116 7516 4115 7509 4109 7503
      4110 7499 4108 7497 4100 7511 4096 7514
      4086 7531 4078 7570 4074 7576 4081 7590
      4090 7600 4100 7575 4105 7578 4110 7577
      4114 7570 4113 7564 4121 7557 4125 7550

$$

KRUZDLO
1 follow-up statement
333 
WGUS51 KPHI 281447
FFWPHI
PAC025-089-281915-
/O.EXT.KPHI.FF.W.0045.000000T0000Z-110828T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1047 AM EDT SUN AUG 28 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

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

* UNTIL 315 PM EDT...

* AT 1041 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED  
  TO SHOW MODERATE RAIN OVER THE POCONOS FROM TROPICAL STORM IRENE.  
  WHILE THE HEAVIEST RAIN HAS MOVED TO THE NORTH OF THE AREA...      
  LATEST REPORTS INDICATE THAT MANY LOCATIONS HAVE RECEIVED 6 TO 8   
  INCHES OF RAIN SINCE YESTERDAY. RUNOFF FROM THIS EXTREME RAINFALL  
  WILL CONTINUE THROUGHOUT THE DAY TODAY WITH WIDESPREAD FLOODING OF 
  SMALL CREEKS AND STREAMS. MANY ROADWAYS ARE CLOSED AND             
  IMPASSABLE. THIS IS A VERY SERIOUS FLOOD SITUATION. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LEHIGHTON
  AND MOUNT POCONO.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 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!

&&

LAT...LON 4126 7514 4116 7516 4115 7509 4109 7503
      4110 7499 4108 7497 4100 7511 4096 7514
      4086 7531 4078 7570 4074 7576 4081 7590
      4090 7600 4100 7575 4105 7578 4110 7577
      4114 7570 4113 7564 4121 7557 4125 7550

$$
MANNING

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 8:28 PM EDTFlash Flood WarningPHIChester12 hr
Aug 27, 9:29 PM EDTTornado WarningPHIDelaware31 min
Aug 27, 9:43 PM EDTAreal Flood WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton6 hr
Aug 27, 9:58 PM EDTRiver Flood WarningPHIMonroe, Northampton48 hr
Aug 27, 9:58 PM EDTRiver Flood WarningPHIMonroe, Northampton17 hr
Aug 27, 10:14 PM EDTTornado WarningPHIChester, Delaware31 min
Aug 27, 10:23 PM EDTTornado WarningPHIChester, Delaware, Montgomery, Philadelphia37 min
Aug 27, 10:36 PM EDTTornado WarningPHIBucks, Montgomery, Philadelphia24 min
Aug 27, 11:21 PM EDTAreal Flood WarningPHICarbon, Monroe6 hr
Aug 27, 11:22 PM EDTTornado WarningPHIBucks, Montgomery23 min
Aug 27, 11:37 PM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia12 hr
Aug 28, 3:50 AM EDTFlash Flood WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton10 hr
Aug 28, 11:07 AM EDTAreal Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia18 hr
Aug 28, 1:27 PM EDTAreal Flood WarningPHIBerks, Bucks, Lehigh, Montgomery, Northampton8 hr
Aug 28, 3:23 PM EDTAreal Flood WarningPHICarbon, Monroe8 hr
Aug 28, 6:47 PM EDTRiver Flood WarningPHILehigh2 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2011Every flash flood warning in 2011

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.