Alert archive / New Jersey / Areal Flood Advisories in 2017

Areal Flood Advisory 21, NWS Philadelphia/Mount Holly

May 5, 20176 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at May 5, 2017, 1:02 PM EDT for 6 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: May 5, 2017, 1:02 PM EDT (17:02 UTC)
Expired: May 5, 2017, 5:00 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 101 km from the middle of the area, began a volume at 17:04 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, 5.0 hours before the alert went out and 130 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 872 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 289 m²/s²
0-3 km storm-relative helicity: 358 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

684 
WGUS81 KPHI 051702
FLSPHI

Flood Advisory
National Weather Service Mount Holly NJ
102 PM EDT FRI MAY 5 2017

NJC019-021-023-027-035-037-PAC017-052100-
/O.NEW.KPHI.FA.Y.0021.170505T1702Z-170505T2100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-Hunterdon NJ-Sussex NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
Bucks PA-
102 PM EDT FRI MAY 5 2017

The National Weather Service in Mount Holly NJ  has issued a

* Flood Advisory for...
  Morris County in northern New Jersey...
  Southeastern Hunterdon County in northwestern New Jersey...
  Southeastern Sussex County in northwestern New Jersey...
  Northwestern Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  Northern Middlesex County in northern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...

* Until 500 PM EDT

* At 101 PM EDT...Doppler radar indicated heavy rain across portions 
  of the advised area. The rain will cause minor flooding across 
  poor drainage and low lying areas.

Up to about one inch of rain has already fallen. Another inch is 
possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. 

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 4120 7437 4110 7449 4104 7450 4105 7445
      4102 7443 4100 7430 4091 7427 4090 7427
      4091 7433 4083 7433 4076 7438 4075 7436
      4067 7446 4065 7440 4060 7446 4059 7420
      4057 7421 4015 7504 4126 7449

$$

Kruzdlo

1 follow-up statement

031 
WGUS81 KPHI 051911
FLSPHI

Flood Advisory
National Weather Service Mount Holly NJ
311 PM EDT FRI MAY 5 2017

NJC019-021-023-027-035-037-PAC017-051919-
/O.CAN.KPHI.FA.Y.0021.000000T0000Z-170505T2100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-Hunterdon NJ-Sussex NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
Bucks PA-
311 PM EDT FRI MAY 5 2017

...THE FLOOD ADVISORY HAS BEEN CANCELLED FOR MORRIS...SOUTHEASTERN
HUNTERDON...SOUTHEASTERN SUSSEX...NORTHWESTERN MERCER...SOMERSET...
NORTHERN MIDDLESEX AND SOUTHEASTERN BUCKS COUNTIES...

The heavy rain has ended. The advisory has been cancelled.

LAT...LON 4120 7437 4110 7449 4104 7450 4105 7445
      4102 7443 4100 7430 4091 7427 4090 7427
      4091 7433 4083 7433 4076 7438 4075 7436
      4067 7446 4065 7440 4060 7446 4059 7420
      4057 7421 4015 7504 4126 7449

$$

Kruzdlo

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:36 AM EDT	Special Marine Warning	PHI		39 min
May 5, 9:12 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	33 min
May 5, 9:13 AM EDT	Special Marine Warning	PHI		62 min
May 5, 9:30 AM EDT	Special Weather Statement	PHI	Atlantic	30 min
May 5, 9:46 AM EDT	Special Marine Warning	PHI		59 min
May 5, 9:50 AM EDT	Gale Warning	PHI		6 hr
May 5, 9:56 AM EDT	Special Marine Warning	PHI		64 min
May 5, 10:00 AM EDT	Special Weather Statement	PHI	Burlington, Ocean	45 min
May 5, 10:11 AM EDT	Special Marine Warning	PHI		64 min
May 5, 10:33 AM EDT	Special Weather Statement	PHI	Monmouth, Ocean	42 min
May 5, 10:38 AM EDT	Special Marine Warning	PHI		37 min
May 5, 10:47 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	4 hr
May 5, 10:48 AM EDT	Special Weather Statement	PHI	Atlantic	27 min
May 5, 11:00 AM EDT	Special Marine Warning	PHI		60 min
May 5, 11:14 AM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	4 hr
May 5, 11:18 AM EDT	Special Marine Warning	PHI		27 min
May 5, 11:20 AM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth	5 hr
May 5, 11:21 AM EDT	Special Weather Statement	PHI	Monmouth, Ocean	54 min
May 5, 11:32 AM EDT	Special Weather Statement	PHI	Cumberland	43 min
May 5, 11:33 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	4 hr
May 5, 11:54 AM EDT	Special Marine Warning	PHI		66 min
May 5, 12:45 PM EDT	Special Weather Statement	PHI	Monmouth, Ocean	45 min
May 5, 12:53 PM EDT	Special Marine Warning	PHI		67 min
May 5, 12:54 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	4 hr

Nearby

Areal Flood Advisories in New Jersey, 2017 Areal Flood Advisories in Pennsylvania, 2017 Every areal flood advisory in 2017

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.