Alert archive / New Jersey / Areal Flood Advisories in 2011

Areal Flood Advisory 13, NWS Philadelphia/Mount Holly

March 10, 201110 counties in Pennsylvania; 11 counties in New Jersey; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this areal flood advisory at Mar 10, 2011, 1:17 PM EST for 10 counties in Pennsylvania; 11 counties in New Jersey; New Castle County, Delaware. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 10, 2011, 1:17 PM EST (18:17 UTC)
Expired
Mar 10, 2011, 6:13 PM EST
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
All 22 counties

New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 87 km from the middle of the area, began a volume at 18:19 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 12:00Z, 6.3 hours before the alert went out and 189 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 12:00Z on 2011-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2011-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 559 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
559 m²/s²
0-3 km storm-relative helicity
585 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.

710 
WGUS81 KPHI 101817
FLSPHI

FLOOD ADVISORY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
117 PM EST THU MAR 10 2011

DEC003-NJC005-007-015-019-021-023-025-027-035-037-041-PAC011-017-025-
029-045-077-089-091-095-101-110015-
/O.NEW.KPHI.FA.Y.0013.110310T1817Z-110311T0015Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-CAMDEN NJ-
GLOUCESTER NJ-MERCER NJ-MIDDLESEX NJ-DELAWARE PA-PHILADELPHIA PA-
CHESTER PA-MONTGOMERY PA-BERKS PA-LEHIGH PA-NORTHAMPTON PA-CARBON PA-
BUCKS PA-MONROE PA-MONMOUTH NJ-NEW CASTLE DE-BURLINGTON NJ-
117 PM EST THU MAR 10 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
  PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA...
  MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
  BERKS COUNTY IN EASTERN PENNSYLVANIA...
  LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  WESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 715 PM EST

* AT 115 PM EST DOPPLER RADAR INDICATED A BAND OF HEAVY RAIN MOVING 
NORTHWARD THROUGH THE REGION. RAINFALL RATES OVER HALF AN INCH PER 
HOUR HAVE BEEN REPORTED. RAIN WILL CONTINUE OVER THE AREA FOR THE 
NEXT SEVERAL HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

A FLOOD ADVISORY MEANS RIVER OR STREAM FLOWS ARE ELEVATED OR PONDING
OF WATER IN URBAN OR OTHER AREAS IS OCCURRING OR IS IMMINENT.

&&

LAT...LON 4112 7445 4104 7449 4097 7427 4059 7444
      4059 7421 4017 7440 4007 7456 3974 7458
      3964 7499 3978 7543 3968 7553 3973 7614
      4014 7590 4050 7642 4074 7578 4088 7596
      4123 7553 4125 7525 4109 7501 4132 7467

$$

MEOLA/KLINE
1 follow-up statement
026 
WGUS81 KPHI 102313
FLSPHI

FLOOD ADVISORY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
613 PM EST THU MAR 10 2011

DEC003-NJC005-007-015-019-021-023-025-027-035-037-041-PAC011-017-025-
029-045-077-089-091-095-101-102320-
/O.CAN.KPHI.FA.Y.0013.000000T0000Z-110311T0015Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-CAMDEN NJ-
GLOUCESTER NJ-MERCER NJ-MIDDLESEX NJ-DELAWARE PA-PHILADELPHIA PA-
CHESTER PA-MONTGOMERY PA-BERKS PA-LEHIGH PA-NORTHAMPTON PA-CARBON PA-
BUCKS PA-MONROE PA-MONMOUTH NJ-NEW CASTLE DE-BURLINGTON NJ-
613 PM EST THU MAR 10 2011

...THE URBAN AND SMALL STREAM FLOOD ADVISORY HAS BEEN CANCELLED FOR
WESTERN BURLINGTON...NORTHERN NEW CASTLE...SOUTHWESTERN MONMOUTH...
MONROE...BUCKS...CARBON...NORTHAMPTON...LEHIGH...BERKS...
MONTGOMERY...CHESTER...PHILADELPHIA...DELAWARE...MIDDLESEX...
MERCER...NORTHERN GLOUCESTER...CAMDEN...SOMERSET...HUNTERDON...
MORRIS...WARREN AND SUSSEX COUNTIES...

THIS ADVISORY HAS BEEN SUPERSEDED BY THE WARNING ISSUED AT 455 PM.   

LAT...LON 4112 7445 4104 7449 4097 7427 4059 7444
      4059 7421 4017 7440 4007 7456 3974 7458
      3964 7499 3978 7543 3968 7553 3973 7614
      4014 7590 4050 7642 4074 7578 4088 7596
      4123 7553 4125 7525 4109 7501 4132 7467

$$
DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 2:10 AM ESTCoastal Flood AdvisoryPHIDelaware, Philadelphia5 hr
Mar 10, 7:28 AM ESTAreal Flood AdvisoryPHIBerks, Bucks, Chester, Delaware, Lehigh, Monroe and 3 more6 hr
Mar 10, 3:02 PM ESTCoastal Flood WarningPHIDelaware, Philadelphia17 hr
Mar 10, 4:36 PM ESTAreal Flood WarningPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 3 more37 hr
Mar 10, 4:55 PM ESTRiver Flood WarningPHIChester17 hr
Mar 10, 5:17 PM ESTWind AdvisoryPHIDelaware, Philadelphia5 hr
Mar 10, 3:20 AM ESTGale WarningPHI22 hr
Mar 10, 10:33 AM ESTRiver Flood WarningPHINew Castle4 hr

Nearby

Areal Flood Advisories in New Jersey, 2011Areal Flood Advisories in Pennsylvania, 2011Areal Flood Advisories in Delaware, 2011Every areal flood advisory 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.