Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 92, NWS Philadelphia/Mount Holly

June 26, 2009Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2009, 4:34 PM EDT for Sussex County, New Jersey. It was in force for 86 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
Jun 26, 2009, 4:34 PM EDT (20:34 UTC)
Expired
Jun 26, 2009, 6:00 PM EDT
In force
86 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 20:37 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 26, 4:55 PM EDTTSTM WND GST 681 Ese High Point, NJ68 MPH WIND MEASURED IN WANTAGE TWP.
Jun 26, 4:56 PM EDTTSTM WND GST 68High Point, NJ68 MPH WIND GUST AT HIGH POINT.

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 26, 2:42 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.6 hours before the alert went out and 158 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 2009-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 2009-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
4 J/kg
Mixed-layer CIN
-380 J/kg
Mixed-layer LCL
1367 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
70 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.

000 
WUUS51 KPHI 262034
SVRPHI
NJC037-262200-
/O.NEW.KPHI.SV.W.0092.090626T2034Z-090626T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
434 PM EDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  THIS INCLUDES THE CITY OF NEWTON...

* UNTIL 600 PM EDT

* AT 432 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 15 MILES NORTHWEST OF HIGH
  POINT TO 10 MILES NORTHWEST OF FLATBROOKVILLE...AND MOVING EAST
  AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  FLATBROOKVILLE AROUND 445 PM EDT...
  HAINESVILLE AROUND 450 PM EDT...
  HIGH POINT...FIVE POINTS AND CRANDON LAKES AROUND 455 PM EDT...
  BRANCHVILLE AROUND 500 PM EDT...
  ANDOVER...SUSSEX AND NEWTON AROUND 505 PM EDT...
  STANHOPE AROUND 515 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS 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 1000 PM EDT 
FRIDAY EVENING.

&&

LAT...LON 4120 7437 4118 7437 4098 7462 4092 7465
      4090 7468 4091 7477 4107 7495 4109 7499
      4110 7499 4115 7491 4127 7484 4132 7479
      4135 7471 4135 7468
TIME...MOT...LOC 2032Z 289DEG 32KT 4147 7487 4118 7511

$$

SZATKOWSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 4:51 PM EDTSevere Thunderstorm WarningPHIWarren69 min
Jun 26, 5:27 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset78 min
Jun 26, 6:39 PM EDTSpecial Marine WarningPHI51 min
Jun 26, 6:41 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Somerset41 min
Jun 26, 6:45 PM EDTSevere Thunderstorm WarningPHIMonmouth30 min
Jun 26, 7:10 PM EDTSevere Thunderstorm WarningPHIBurlington50 min
Jun 26, 7:18 PM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth, Ocean72 min
Jun 26, 7:28 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth, Ocean92 min
Jun 26, 7:45 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester, Ocean65 min
Jun 26, 7:56 PM EDTSpecial Marine WarningPHI64 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2009Every severe thunderstorm warning in 2009

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.