Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 44, NWS Philadelphia/Mount Holly

July 3, 2018Burlington County, Camden County, New Jersey; Bucks County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2018, 6:25 PM EDT for Burlington County, Camden County, New Jersey; Bucks County, Philadelphia County, Pennsylvania. It was in force for 50 min. 5 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
Jul 3, 2018, 6:25 PM EDT (22:25 UTC)
Expired
Jul 3, 2018, 7:15 PM EDT
In force
50 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Burlington County, NJ, Camden County, NJ, Bucks County, PA, Philadelphia County, PA

What was reported inside it

TimeReportWhereRemark
Jul 3, 6:30 PM EDTTSTM WND DMGDelran Twp, NJSEVERAL LARGE TREE LIMBS SNAPPED OFF BETWEEN HARTFORD ROAD AND WESTFIELD ROAD
Jul 3, 6:30 PM EDTHAIL 0.88Delran Twp, NJNICKEL TO QUARTER SIZE HAIL; WIND GUSTS ESTIMATED AT 50 MPH; CTG LIGHTNING; SOME STREET FLOODING;
Jul 3, 6:34 PM EDTHAIL 0.75Edgewater Park, NJHAIL UP TO PENNY SIZE REPORTED IN EDGEWATER PARK
Jul 3, 6:38 PM EDTTSTM WND DMGPennsauken, NJNUMEROUS TREES DOWN IN PENNSAUKEN. TIME ESTIMATED FROM RADAR.
Jul 3, 6:40 PM EDTTSTM WND DMG1 E Rancocas, NJTREE DOWN ON INTERSTATE 295 NEAR THE RANCOCAS ROAD EXIT. TIME ESTIMATED BY RADAR.

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, 10.4 hours before the alert went out and 198 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 2018-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 864 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2018-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
864 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

854 
WUUS51 KPHI 032225
SVRPHI
NJC005-007-PAC017-101-032315-
/O.NEW.KPHI.SV.W.0044.180703T2225Z-180703T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
625 PM EDT TUE JUL 3 2018

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  North central Camden County in southern New Jersey...
  Northwestern Burlington County in southern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...
  East central Philadelphia County in southeastern Pennsylvania...

* Until 715 PM EDT.

* At 624 PM EDT, severe thunderstorms were located along a line
  extending from near Burlington to near Ramblewood, moving southeast
  at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Philadelphia, Evesham, Mount Laurel, Willingboro, Lumberton,
  Burlington, Bristol, Mount Holly, Riverside, Palmyra, Beverly,
  Wissinoming, Ramblewood, Cherry Hill Mall, Tacony, Marlton,
  Jacksonville, Andalusia, Holmesburg and Greentree.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3986 7493 3998 7509 4002 7508 4010 7495
      4008 7487 4011 7483 4000 7465
TIME...MOT...LOC 2224Z 293DEG 11KT 4005 7483 3998 7495 

HAIL...<.75IN
WIND...60MPH
 
$$

Meola

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 2:33 PM EDTSpecial Weather StatementPHIUnion27 min
Jul 3, 2:57 PM EDTSpecial Weather StatementPHIMorris63 min
Jul 3, 3:19 PM EDTFlash Flood WarningPHIMorris3 hr
Jul 3, 3:28 PM EDTSpecial Weather StatementPHISalem62 min
Jul 3, 3:30 PM EDTSpecial Weather StatementPHIBurlington60 min
Jul 3, 3:43 PM EDTFlash Flood WarningPHIMorris2 hr
Jul 3, 4:49 PM EDTSpecial Weather StatementPHISomerset56 min
Jul 3, 4:52 PM EDTSpecial Weather StatementPHIMercer53 min
Jul 3, 4:57 PM EDTFlash Flood WarningPHIHunterdon, Somerset114 min
Jul 3, 5:24 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester4 hr
Jul 3, 5:29 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset4 hr
Jul 3, 5:45 PM EDTFlash Flood WarningPHICamden, Gloucester4 hr
Jul 3, 5:47 PM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset2 hr
Jul 3, 5:57 PM EDTSpecial Weather StatementPHIGloucester33 min
Jul 3, 6:03 PM EDTSpecial Weather StatementPHISussex57 min
Jul 3, 6:11 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester49 min
Jul 3, 6:37 PM EDTFlash Flood WarningPHIBurlington, Camden3 hr
Jul 3, 6:46 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester44 min
Jul 3, 6:58 PM EDTFlash Flood WarningPHIBurlington, Camden, Gloucester49 min
Jul 3, 7:03 PM EDTSpecial Weather StatementPHIWarren57 min
Jul 3, 2:15 PM EDTSpecial Weather StatementPHIDelaware30 min
Jul 3, 3:00 PM EDTSpecial Weather StatementPHIPhiladelphia60 min
Jul 3, 3:11 PM EDTFlash Flood WarningPHIMontgomery, Philadelphia50 min
Jul 3, 4:06 PM EDTSpecial Weather StatementPHIMontgomery54 min
Jul 3, 4:30 PM EDTSpecial Weather StatementPHIBucks60 min
Jul 3, 5:30 PM EDTSpecial Weather StatementPHIPhiladelphia30 min
Jul 3, 6:15 PM EDTSpecial Weather StatementPHIChester60 min
Jul 3, 6:18 PM EDTSevere Thunderstorm WarningPHIDelaware, Philadelphia42 min
Jul 3, 6:21 PM EDTSpecial Weather StatementPHIDelaware24 min
Jul 3, 6:40 PM EDTAreal Flood AdvisoryPHIChester, Delaware4 hr
Jul 3, 6:50 PM EDTSpecial Weather StatementPHIDelaware55 min
Jul 3, 6:54 PM EDTSevere Thunderstorm WarningPHIChester, Delaware51 min
Jul 3, 6:58 PM EDTFlash Flood WarningPHIChester, Delaware4 hr
Jul 3, 7:06 PM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia2 hr
Jul 3, 7:22 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery, Philadelphia21 min
Jul 3, 7:35 PM EDTSpecial Weather StatementPHIChester25 min
Jul 3, 7:39 PM EDTSevere Thunderstorm WarningPHIChester51 min
Jul 3, 7:54 PM EDTFlash Flood WarningPHIChester4 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2018Severe Thunderstorm Warnings in Pennsylvania, 2018Every severe thunderstorm warning in 2018

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.