Alert archive / New Jersey / Flash Flood Warnings in 2013

Flash Flood Warning 56, NWS Philadelphia/Mount Holly

August 13, 20134 counties in New Jersey; Delaware County, Montgomery County, Philadelphia County, Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 13, 2013, 7:54 AM EDT for 4 counties in New Jersey; Delaware County, Montgomery County, Philadelphia County, Pennsylvania; New Castle County, Delaware. It was in force for 8 hr. 9 reports 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: Aug 13, 2013, 7:54 AM EDT (11:54 UTC)
Expired: Aug 13, 2013, 3:45 PM EDT
In force: 8 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 88 km from the middle of the area, began a volume at 11:56 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
Aug 13, 8:05 AM EDT	FLASH FLOOD	Pike Creek, DE	HIGHWAY 7 IS COVERED WITH SEVERAL FEET OF WATER
Aug 13, 8:17 AM EDT	FLASH FLOOD	Newark, DE	FLOODING AT SOUTH CHAPEL STREET AND LOVETT AVE
Aug 13, 9:09 AM EDT	FLASH FLOOD	Pennsauken, NJ	US 130 SOUTHBOUND OF CR 612 AND BROWNING ROAD... 1-2 LANES CLOSED.
Aug 13, 9:12 AM EDT	FLASH FLOOD	Pilesgrove Twp, NJ	NJ 45 ALL LANES CLOSED DUE TO FLOODING NEAR US 40.
Aug 13, 9:16 AM EDT	FLASH FLOOD	Cherry Hill, NJ	FLOODING ON NJ-70 EASTBOUND ALL LANES CLOSED NEAR 673 SPRINGDALE
Aug 13, 9:17 AM EDT	FLASH FLOOD	Gloucester City, NJ	FLOODING ON I-76 NEAR EXIT 1C... ALL LANES CLOSED.
Aug 13, 9:29 AM EDT	FLASH FLOOD	Gloucester City, NJ	1-76 WEST NEAR EXIT 1B NEAR 295.
Aug 13, 9:34 AM EDT	FLASH FLOOD	Newark, DE	SEVERAL ROADS CLOSED THROUGHOUT THE COUNTY.
Aug 13, 9:52 AM EDT	FLASH FLOOD	Glendora, NJ	STATION AVENUE... HADDON HEIGHTS... CLOSED BOTH DIRECTIONS...BLACK HORSE PIKE FLOODED SEVERAL DIRECTIONS

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 11.9 hours before the alert went out and 194 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: 1 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1841 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

331 
WGUS51 KPHI 131154
FFWPHI
DEC003-NJC005-007-015-033-PAC045-091-101-131545-
/O.NEW.KPHI.FF.W.0056.130813T1154Z-130813T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
754 AM EDT TUE AUG 13 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CAMDEN COUNTY...
  SOUTHEASTERN MONTGOMERY COUNTY...
  PHILADELPHIA COUNTY...
  SOUTHERN DELAWARE COUNTY...
  NORTHWESTERN GLOUCESTER COUNTY...
  NORTHERN NEW CASTLE COUNTY...
  WEST CENTRAL BURLINGTON COUNTY...
  NORTHWESTERN SALEM COUNTY...

* UNTIL 1145 AM EDT...

* AT 750 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN MOVING INTO THE AREA FROM THE SOUTHWEST. RAINFALL
  AMOUNTS OF ONE TO THREE INCHES WILL FALL IN A SHORT AMOUNT OF TIME
  WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WILMINGTON...PHILADELPHIA...WOODSTOWN...WOODBURY...CAMDEN AND
  MOORESTOWN.

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 3976 7575 3980 7571 3985 7558 3986 7559
      3985 7541 4021 7513 4011 7496 4005 7497
      4008 7488 4000 7476 3955 7537 3955 7553
      3957 7552 3959 7555 3955 7556 3954 7578
      3967 7579

$$

IOVINO

1 follow-up statement

563 
WGUS51 KPHI 131500
FFWPHI
DEC003-NJC005-007-015-033-PAC045-091-101-131945-
/O.EXT.KPHI.FF.W.0056.000000T0000Z-130813T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1100 AM EDT TUE AUG 13 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CAMDEN COUNTY...
  SOUTHEASTERN MONTGOMERY COUNTY...
  PHILADELPHIA COUNTY...
  SOUTHERN DELAWARE COUNTY...
  NORTHWESTERN GLOUCESTER COUNTY...
  NORTHERN NEW CASTLE COUNTY...
  WEST CENTRAL BURLINGTON COUNTY...
  NORTHWESTERN SALEM COUNTY...

* UNTIL 345 PM EDT...

* AT 1052 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  THAT THE HEAVIEST RAIN HAS MOVED OUT OF AREA. HOWEVER...SOME       
  STREAMS IN THE AREA...SUCH AS THE WISSAHICKEN AND                  
  PENNYPACK...REMAIN ABOVE FLOOD STAGE. WITH LIGHTER RAIN POSSIBLE   
  FOR THE NEXT SEVERAL HOURS...THE FLASH FLOOD WARNING HAS BEEN      
  EXTENDED INTO THE AFTERNOON HOURS TO GIVE TIME FOR THESE AND OTHER 
  STREAMS TO DRAIN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 3976 7575 3980 7571 3985 7558 3986 7559
      3985 7541 4021 7513 4011 7496 4005 7497
      4008 7488 4000 7476 3955 7537 3955 7553
      3957 7552 3959 7555 3955 7556 3954 7578
      3967 7579

$$

FORECASTER:JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 2:45 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more	9 hr
Aug 13, 6:23 AM EDT	Severe Thunderstorm Warning	PHI	Salem	67 min
Aug 13, 7:05 AM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	40 min
Aug 13, 7:11 AM EDT	Special Marine Warning	PHI		19 min
Aug 13, 7:16 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	59 min
Aug 13, 7:22 AM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Salem	7 hr
Aug 13, 7:33 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Warren	7 hr
Aug 13, 7:51 AM EDT	Special Marine Warning	PHI		24 min
Aug 13, 7:54 AM EDT	Special Weather Statement	PHI	Camden	66 min
Aug 13, 7:57 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	48 min
Aug 13, 8:20 AM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer	8 hr
Aug 13, 8:36 AM EDT	Special Weather Statement	PHI	Mercer	39 min
Aug 13, 8:44 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Salem	61 min
Aug 13, 8:59 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Camden, Gloucester	7 hr
Aug 13, 9:07 AM EDT	Special Weather Statement	PHI	Cumberland, Salem	38 min
Aug 13, 9:11 AM EDT	Special Weather Statement	PHI	Burlington	49 min
Aug 13, 9:22 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	38 min
Aug 13, 9:26 AM EDT	Special Weather Statement	PHI	Atlantic	34 min
Aug 13, 9:34 AM EDT	Special Marine Warning	PHI		56 min
Aug 13, 9:42 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Hunterdon, Middlesex and 4 more	5 hr
Aug 13, 9:43 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	47 min
Aug 13, 9:49 AM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	56 min
Aug 13, 10:01 AM EDT	Special Weather Statement	PHI	Monmouth	29 min
Aug 13, 10:04 AM EDT	Special Weather Statement	PHI	Ocean	41 min
Aug 13, 10:12 AM EDT	Tornado Warning	PHI	Ocean	33 min
Aug 13, 10:32 AM EDT	Severe Thunderstorm Warning	PHI	Ocean	28 min
Aug 13, 10:39 AM EDT	Special Marine Warning	PHI		66 min
Aug 13, 10:51 AM EDT	Special Weather Statement	PHI	Atlantic	54 min
Aug 13, 11:51 AM EDT	Special Marine Warning	PHI		84 min
Aug 13, 1:10 PM EDT	Special Marine Warning	PHI		65 min
Aug 13, 2:18 PM EDT	Areal Flood Warning	PHI	Burlington, Camden, Gloucester, Salem	9 hr
Aug 13, 3:30 PM EDT	Small Craft Advisory	PHI		24 hr
Aug 13, 5:15 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Montgomery	4 hr
Aug 13, 5:47 AM EDT	Flash Flood Warning	PHI	Chester	4 hr
Aug 13, 6:07 AM EDT	Areal Flood Advisory	PHI	Bucks, Lehigh, Northampton	7 hr
Aug 13, 6:07 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	53 min
Aug 13, 6:20 AM EDT	Areal Flood Advisory	PHI	Bucks, Delaware, Philadelphia	4 hr
Aug 13, 6:32 AM EDT	Tornado Warning	PHI	Chester	43 min
Aug 13, 6:36 AM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery	8 hr
Aug 13, 7:14 AM EDT	Flash Flood Warning	PHI	Berks	4 hr
Aug 13, 7:42 AM EDT	Special Weather Statement	PHI	Philadelphia	48 min
Aug 13, 8:07 AM EDT	River Flood Warning	PHI	Chester	9 hr
Aug 13, 9:50 AM EDT	Flash Flood Warning	PHI	Chester	4 hr
Aug 13, 11:22 AM EDT	River Flood Warning	PHI	Chester, Delaware	16 hr
Aug 13, 6:51 AM EDT	Areal Flood Advisory	PHI	New Castle	7 hr
Aug 13, 7:31 AM EDT	Special Weather Statement	PHI	New Castle	44 min
Aug 13, 8:37 AM EDT	River Flood Warning	PHI	New Castle	4 hr
Aug 13, 11:19 AM EDT	Special Weather Statement	PHI	Kent	56 min
Aug 13, 1:50 PM EDT	River Flood Warning	PHI	New Castle	119 min

Nearby

Flash Flood Warnings in New Jersey, 2013 Flash Flood Warnings in Pennsylvania, 2013 Flash Flood Warnings in Delaware, 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.