Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 84, NWS Philadelphia/Mount Holly

June 24, 2010Cape May County, Cumberland County, New Jersey; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 24, 2010, 5:46 PM EDT for Cape May County, Cumberland County, New Jersey; Kent County, Delaware. It was in force for 59 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
Jun 24, 2010, 5:46 PM EDT (21:46 UTC)
Expired
Jun 24, 2010, 6:45 PM EDT
In force
59 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Kent County, DE, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 53 km from the middle of the area, began a volume at 21:47 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
Jun 24, 6:20 PM EDTTSTM WND DMG1 S Port Norris, NJWIRES DOWN IN COMMERCIAL TWP AND MAURICE RIVER TWP.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 24, 12:28 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 hours before the alert went out and 101 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, Phillips Aaf/Abe, MD at 12:00Z on 2010-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 joules per kilogram.LCLLFCEL10008507005003002001001 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, Phillips Aaf/Abe, MD at 12:00Z on 2010-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.193958Sfc1 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
126 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
1592 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
65 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.

879 
WUUS51 KPHI 242146
SVRPHI
DEC001-NJC009-011-242245-
/O.NEW.KPHI.SV.W.0084.100624T2146Z-100624T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
546 PM EDT THU JUN 24 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN KENT COUNTY IN CENTRAL DELAWARE...
  THIS INCLUDES THE CITY OF DOVER...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAPE MAY...
  SOUTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 645 PM EDT

* AT 541 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  RISING SUN...OR NEAR DOVER...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES SOUTH OF BIVALVE AROUND 620 PM EDT...
  ELDORA AROUND 630 PM EDT...
  GOSHEN AND CAPE MAY COURT HOUSE AROUND 635 PM EDT...
  DENNISVILLE...AVALON...WOODBINE AND 6 MILES NORTH OF SCOTCH BONNET
  AROUND 640 PM EDT...
  SEA ISLE CITY AND SEAVILLE AROUND 645 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.

&&

LAT...LON 3899 7479 3892 7495 3895 7498 3911 7490
      3916 7491 3920 7505 3917 7514 3923 7518
      3929 7527 3926 7540 3909 7540 3905 7535
      3902 7559 3928 7561 3929 7542 3926 7539
      3930 7532 3932 7487 3928 7469 3929 7455
TIME...MOT...LOC 2146Z 267DEG 32KT 3914 7542

$$

KRUZDLO
1 follow-up statement
118 
WWUS51 KPHI 242212
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
612 PM EDT THU JUN 24 2010

DEC001-242222-
/O.CAN.KPHI.SV.W.0084.000000T0000Z-100624T2245Z/
KENT DE-
612 PM EDT THU JUN 24 2010

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL KENT COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR SOUTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHERN NEW JERSEY.

LAT...LON 3920 7464 3907 7471 3902 7479 3899 7479
      3892 7495 3896 7498 3910 7490 3916 7491
      3920 7504 3920 7510 3917 7513 3924 7520
      3930 7532 3932 7487 3927 7471 3929 7455
      3928 7455
TIME...MOT...LOC 2212Z 267DEG 42KT 3915 7493

$$

NJC009-011-242245-
/O.CON.KPHI.SV.W.0084.000000T0000Z-100624T2245Z/
CUMBERLAND NJ-CAPE MAY NJ-
612 PM EDT THU JUN 24 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CAPE MAY AND SOUTHERN CUMBERLAND COUNTIES...

AT 610 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 6 MILES SOUTHWEST OF ELDORA...OR 15 MILES NORTH OF CAPE
MAY...MOVING EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  DENNISVILLE...CAPE MAY COURT HOUSE...WOODBINE AND 6 MILES NORTH OF
  SCOTCH BONNET BY 620 PM EDT...
  SEAVILLE AND AVALON BY 625 PM EDT...
  SEA ISLE CITY BY 630 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR SOUTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHERN NEW JERSEY.

&&

LAT...LON 3920 7464 3907 7471 3902 7479 3899 7479
      3892 7495 3896 7498 3910 7490 3916 7491
      3920 7504 3920 7510 3917 7513 3924 7520
      3930 7532 3932 7487 3927 7471 3929 7455
      3928 7455
TIME...MOT...LOC 2212Z 267DEG 42KT 3915 7493

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 12:36 PM EDTSpecial Weather StatementPHIMorris, Sussex54 min
Jun 24, 1:16 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren59 min
Jun 24, 3:13 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Salem62 min
Jun 24, 3:44 PM EDTSevere Thunderstorm WarningPHISalem76 min
Jun 24, 3:47 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more58 min
Jun 24, 4:04 PM EDTSpecial Marine WarningPHI86 min
Jun 24, 4:15 PM EDTSpecial Weather StatementPHISussex60 min
Jun 24, 4:18 PM EDTSevere Thunderstorm WarningPHICamden, Cumberland, Gloucester, Salem57 min
Jun 24, 4:43 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more62 min
Jun 24, 5:15 PM EDTSpecial Marine WarningPHI60 min
Jun 24, 5:26 PM EDTSpecial Marine WarningPHI2 hr
Jun 24, 6:14 PM EDTSpecial Marine WarningPHI91 min
Jun 24, 6:17 PM EDTSpecial Marine WarningPHI58 min
Jun 24, 7:39 PM EDTSpecial Marine WarningPHI79 min
Jun 24, 2:56 PM EDTSevere Thunderstorm WarningPHINew Castle64 min
Jun 24, 3:29 PM EDTSevere Thunderstorm WarningPHINew Castle61 min
Jun 24, 5:18 PM EDTSevere Thunderstorm WarningPHIKent, Sussex87 min
Jun 24, 6:53 PM EDTSpecial Weather StatementPHISussex67 min
Jun 24, 7:14 PM EDTSevere Thunderstorm WarningPHISussex50 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2010Severe Thunderstorm Warnings in Delaware, 2010Every severe thunderstorm warning in 2010

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.