Alert archive / New Jersey / Flash Flood Warnings in 2013

Flash Flood Warning 28, NWS Philadelphia/Mount Holly

June 30, 2013Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 30, 2013, 2:40 PM EDT for Burlington County, New Jersey. 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: Jun 30, 2013, 2:40 PM EDT (18:40 UTC)
Expired: Jun 30, 2013, 6:30 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

County Burlington County, NJ

The radar

The Philadelphia radar (KDIX), 45 km from the middle of the area, began a volume at 18:41 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
Jun 30, 2:45 PM EDT	FLASH FLOOD	Evesham Twp, NJ	SOME ROADWAY FLOODING REPORTED IN EVESHAM TWP.

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, 6.7 hours before the alert went out and 207 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: 298 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1020 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

328 
WGUS51 KPHI 301840
FFWPHI
NJC005-302230-
/O.NEW.KPHI.FF.W.0028.130630T1840Z-130630T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EDT SUN JUN 30 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL BURLINGTON COUNTY...

* UNTIL 630 PM EDT...

* AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER WEST CENTRAL BURLINGTON
  COUNTY IN EVESHAM TOWNSHIP.
 
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 3978 7489 3980 7491 3989 7493 3990 7495
      3993 7498 3994 7498 3979 7481

$$

WARNING WAS TO FILL IN THE GAP IN BURLINGTON COUNTY 
BECAUSE OF A SOFTWARE GLITCH

1 follow-up statement

006 
WGUS71 KPHI 302104 RRA
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
504 PM EDT SUN JUN 30 2013

NJC005-302115-
/O.CAN.KPHI.FF.W.0028.000000T0000Z-130630T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLINGTON NJ-
504 PM EDT SUN JUN 30 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WEST CENTRAL
BURLINGTON COUNTY...

THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.

WATER IS RECEDING...BUT JUST SOME MINOR FLOODING PROBLEMS MAY
CONTINUE FOR AN HOUR OR TWO.

LAT...LON 3978 7489 3980 7491 3989 7493 3990 7495
      3993 7498 3994 7498 3979 7481

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 5:29 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	15 hr
Jun 30, 12:26 PM EDT	Special Weather Statement	PHI	Gloucester	49 min
Jun 30, 1:05 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	55 min
Jun 30, 1:28 PM EDT	Flash Flood Warning	PHI	Camden, Gloucester, Salem	4 hr
Jun 30, 1:45 PM EDT	Areal Flood Advisory	PHI	Burlington	4 hr
Jun 30, 2:32 PM EDT	Flash Flood Warning	PHI	Burlington	4 hr
Jun 30, 3:13 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	4 hr
Jun 30, 4:59 PM EDT	Areal Flood Warning	PHI	Gloucester	9 hr

Nearby

Flash Flood Warnings in New Jersey, 2013 Every flash flood warning in 2013

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.