Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 180, NWS Philadelphia/Mount Holly

July 27, 2008Middlesex County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2008, 2:18 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 57 min. 2 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 27, 2008, 2:18 PM EDT (18:18 UTC)
Expired
Jul 27, 2008, 3:15 PM EDT
In force
57 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 18:19 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
Jul 27, 2:30 PM EDTTSTM WND DMGNorth Plainfield, NJTREES DOWN.
Jul 27, 2:50 PM EDTHAIL 0.75Woodbridge, NJ

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
Jul 27, 11:26 AM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.3 hours before the alert went out and 134 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 2008-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 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 2008-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
88 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
1310 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
126 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.

000 
WUUS51 KPHI 271819
SVRPHI
NJC023-027-035-271915-
/O.NEW.KPHI.SV.W.0180.080727T1818Z-080727T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
218 PM EDT SUN JUL 27 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  EAST CENTRAL SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 315 PM EDT

* AT 214 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  MIDDLESEX...OR ABOUT NEAR SOMERVILLE...AND MOVING EAST AT 22 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EDISON BY 235 PM...
  COLONIA BY 245 PM...

HAIL UP TO NICKEL SIZE HAS BEEN REPORTED IN FRANKLIN TOWNSHIP IN 
SOMERSET COUNTY WITH THIS STORM. IF YOU ARE IN THE PATH OF THE 
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

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

LAT...LON 4048 7459 4063 7464 4074 7437 4067 7446
      4065 7445 4066 7442 4066 7440 4064 7440
      4059 7444 4060 7430 4059 7428 4060 7424
      4055 7423
TIME...MOT...LOC 1818Z 261DEG 19KT 4057 7449

$$

AMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 11:29 AM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington46 min
Jul 27, 11:41 AM EDTSevere Thunderstorm WarningPHIMonmouth34 min
Jul 27, 11:50 AM EDTSevere Thunderstorm WarningPHISussex, Warren70 min
Jul 27, 12:06 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May54 min
Jul 27, 12:12 PM EDTSpecial Marine WarningPHI63 min
Jul 27, 12:41 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Ocean49 min
Jul 27, 12:44 PM EDTSpecial Marine WarningPHI61 min
Jul 27, 1:18 PM EDTSevere Thunderstorm WarningPHIMonmouth57 min
Jul 27, 1:19 PM EDTSpecial Marine WarningPHI56 min
Jul 27, 1:44 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer61 min
Jul 27, 1:58 PM EDTSevere Thunderstorm WarningPHIMonmouth62 min
Jul 27, 2:00 PM EDTSevere Thunderstorm WarningPHISalem60 min
Jul 27, 2:06 PM EDTAreal Flood AdvisoryPHIMonmouth3 hr
Jul 27, 2:11 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset64 min
Jul 27, 2:14 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer, Monmouth, Ocean61 min
Jul 27, 2:17 PM EDTSevere Thunderstorm WarningPHICamden, Cumberland, Gloucester, Salem58 min
Jul 27, 2:30 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer2 hr
Jul 27, 2:31 PM EDTSevere Thunderstorm WarningPHICumberland, Salem59 min
Jul 27, 2:38 PM EDTSpecial Marine WarningPHI67 min
Jul 27, 2:38 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth, Ocean67 min
Jul 27, 2:44 PM EDTSpecial Marine WarningPHI2 hr
Jul 27, 2:50 PM EDTAreal Flood AdvisoryPHIMiddlesex, Morris, Somerset115 min
Jul 27, 2:52 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth, Ocean53 min
Jul 27, 3:01 PM EDTSpecial Marine WarningPHI119 min
Jul 27, 3:12 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more63 min
Jul 27, 3:41 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean34 min
Jul 27, 3:49 PM EDTSpecial Marine WarningPHI56 min
Jul 27, 4:05 PM EDTSpecial Marine WarningPHI115 min
Jul 27, 4:09 PM EDTSpecial Marine WarningPHI2 hr
Jul 27, 4:15 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May60 min
Jul 27, 4:39 PM EDTSpecial Marine WarningPHI51 min
Jul 27, 4:44 PM EDTSpecial Marine WarningPHI61 min
Jul 27, 5:45 PM EDTSpecial Marine WarningPHI90 min
Jul 27, 5:47 PM EDTSpecial Marine WarningPHI88 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008Every severe thunderstorm 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.