Alert archive / New Jersey / Flash Flood Warnings in 2008

Flash Flood Warning 17, NWS Philadelphia/Mount Holly

July 6, 2008Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 6, 2008, 3:48 PM EDT for Burlington County, New Jersey. It was in force for 104 min. 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 6, 2008, 3:48 PM EDT (19:48 UTC)
Expired: Jul 6, 2008, 5:32 PM EDT
In force: 104 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

County Burlington County, NJ

The radar

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 19:51 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

Time	Report	Where	Remark
Jul 6, 4:40 PM EDT	FLASH FLOOD	3 Se Tacony, NJ	SEVERAL STREETS QUICKLY FLOODED IN THE PALMYRA AREA.

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, 7.8 hours before the alert went out and 192 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: 61 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 129 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.

000 
WGUS51 KPHI 061948
FFWPHI
NJC005-062245-
/O.NEW.KPHI.FF.W.0017.080706T1948Z-080706T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
348 PM EDT SUN JUL 6 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 645 PM EDT

* AT 343 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED       
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. NEARLY
  TWO INCHES OF RAIN HAS FALLEN IN LUMBERTON TOWNSHIP. SOME AREAS
  IN THE WARNING RECEIVED HEAVY RAIN YESTERDAY AND ARE VULNERABLE 
  TO ADDITIONAL HEAVY RAIN.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JOBSTOWN...
  GEORGETOWN...JACKSONVILLE...WRIGHTSTOWN...WILLINGBORO AND MOUNT
  HOLLY

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.

LAT...LON 4000 7502 4015 7466 3999 7453 3983 7489
TIME...MOT...LOC 1948Z 180DEG 0KT 3998 7476

$$
 
TFG

1 follow-up statement

000 
WGUS71 KPHI 062132
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
531 PM EDT SUN JUL 6 2008

NJC005-062141-
/O.CAN.KPHI.FF.W.0017.000000T0000Z-080706T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLINGTON NJ-
531 PM EDT SUN JUL 6 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN BURLINGTON
COUNTY...

FLOODING THAT OCCURRED IN THE COUNTY HAS ENDED AND THE THUNDERSTORMS
HAVE MOVED OUT OF THE COUNTY.

LAT...LON 4000 7502 4015 7466 3999 7453 3983 7489
TIME...MOT...LOC 2131Z 180DEG 0KT 3998 7476

$$
 
TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 1:57 PM EDT	Special Marine Warning	PHI		86 min
Jul 6, 4:25 PM EDT	Areal Flood Advisory	PHI	Camden, Mercer	72 min
Jul 6, 4:53 PM EDT	Flash Flood Warning	PHI	Mercer	59 min
Jul 6, 5:17 PM EDT	Flash Flood Warning	PHI	Camden	71 min

Nearby

Flash Flood Warnings in New Jersey, 2008 Every flash flood warning in 2008

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.