Alert archive / New Jersey / Flash Flood Warnings in 2019

Flash Flood Warning 40, NWS Philadelphia/Mount Holly

July 5, 2019Burlington County, Monmouth County, Ocean County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 5, 2019, 3:57 PM EDT for Burlington County, Monmouth County, Ocean County, New Jersey; Bucks County, Pennsylvania. It was in force for 4 hr. 1 report 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
Jul 5, 2019, 3:57 PM EDT (19:57 UTC)
Expired
Jul 5, 2019, 7:27 PM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Burlington County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 23 km from the middle of the area, began a volume at 20:00 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

TimeReportWhereRemark
Jul 5, 4:52 PM EDTHEAVY RAIN 2.24Whitesbog, NJSTORM TOTAL RAINFALL.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.0 hours before the alert went out and 172 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 2019-07-05Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2019-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 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
1384 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

018 
WGUS51 KPHI 051957
FFWPHI
NJC005-025-029-PAC017-060000-
/O.NEW.KPHI.FF.W.0040.190705T1957Z-190706T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
357 PM EDT Fri Jul 5 2019

The National Weather Service in Mount Holly NJ has issued a

* Flash Flood Warning for...
  Northwestern Ocean County in southern New Jersey...
  Northern Burlington County in southern New Jersey...
  Southwestern Monmouth County in central New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...

* Until 800 PM EDT.

* At 356 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between one and two inches of 
  rain have already fallen. Flash flooding is expected to begin 
  shortly in the areas of heaviest rain.

* Some locations that could experience flooding include...
  Willingboro, Lumberton, Florence, Burlington, Bristol, Mount Holly,
  Riverside, Bordentown, Presidential Lakes Estates, Lakehurst,
  Beverly, Tullytown, Pemberton, Wrightstown, Florence-Roebling,
  Cedar Glen West, Jacksonville, Georgetown, Crosswicks and
  Presidential Lakes.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3982 7439 4002 7502 4019 7476 4015 7472
      4017 7470 4018 7471 4018 7469 4014 7462
      4014 7459 4015 7459 4005 7426

$$

MPS
2 follow-up statements
125 
WGUS71 KPHI 052216
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
616 PM EDT Fri Jul 5 2019

NJC005-025-029-PAC017-060000-
/O.CON.KPHI.FF.W.0040.000000T0000Z-190706T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ocean NJ-Burlington NJ-Monmouth NJ-Bucks PA-
616 PM EDT Fri Jul 5 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR
NORTHWESTERN OCEAN...NORTHERN BURLINGTON...SOUTHWESTERN MONMOUTH AND
SOUTHEASTERN BUCKS COUNTIES...

At 614 PM EDT, Doppler radar indicated that the heavy rain across 
the warned area has ended. Between one and two inches of rain fall 
across the warned area, resulting in flash flooding. 

Some locations that could experience flooding include...
Willingboro, Lumberton, Florence, Burlington, Bristol, Mount Holly,
Riverside, Bordentown, Presidential Lakes Estates, Lakehurst,
Beverly, Tullytown, Pemberton, Wrightstown, Florence-Roebling, Cedar
Glen West, Jacksonville, Georgetown, Crosswicks and Presidential
Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3982 7439 4002 7502 4019 7476 4015 7472
      4017 7470 4018 7471 4018 7469 4014 7462
      4014 7459 4015 7459 4005 7426

$$

MPS
989 
WGUS71 KPHI 052327
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
727 PM EDT Fri Jul 5 2019

NJC005-025-029-PAC017-052336-
/O.CAN.KPHI.FF.W.0040.000000T0000Z-190706T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ocean NJ-Burlington NJ-Monmouth NJ-Bucks PA-
727 PM EDT Fri Jul 5 2019

...THE FLASH FLOOD WARNING FOR NORTHWESTERN OCEAN...NORTHERN
BURLINGTON...SOUTHWESTERN MONMOUTH AND SOUTHEASTERN BUCKS COUNTIES IS
CANCELLED...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3982 7439 4002 7502 4019 7476 4015 7472
      4017 7470 4018 7471 4018 7469 4014 7462
      4014 7459 4015 7459 4005 7426

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 3:27 AM EDTHeat AdvisoryPHIBurlington, Camden, Gloucester, Mercer11 hr
Jul 5, 2:48 PM EDTExcessive Heat WarningPHIBurlington, Camden, Gloucester, Mercer28 hr
Jul 5, 3:23 PM EDTAreal Flood AdvisoryPHIBurlington4 hr
Jul 5, 3:24 PM EDTAreal Flood AdvisoryPHIBurlington, Ocean36 min
Jul 5, 4:08 PM EDTAreal Flood AdvisoryPHICamden4 hr
Jul 5, 5:05 PM EDTAreal Flood AdvisoryPHICamden, Gloucester3 hr
Jul 5, 5:54 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester39 min
Jul 5, 6:19 PM EDTAreal Flood AdvisoryPHIBerks, Bucks, Chester, Montgomery119 min

Nearby

Flash Flood Warnings in New Jersey, 2019Flash Flood Warnings in Pennsylvania, 2019Every flash flood warning in 2019

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.