Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly

June 10, 20084 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 10, 2008, 8:11 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 64 min. 3 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 10, 2008, 8:11 PM EDT (00:11 UTC)
Expired
Jun 10, 2008, 9:15 PM EDT
In force
64 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Hunterdon County, NJ, Mercer County, NJ, Morris County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 00:11 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 10, 8:30 PM EDTTSTM WND GST 605 S Flemington, NJ50 TO 60 MPH WIND GUST IN RINGOES
Jun 10, 8:45 PM EDTTSTM WND DMGLawrenceville, NJTREES AND WIRES DOWN IN LAWRENCEVILLE.
Jun 10, 8:50 PM EDTTSTM WND GST 605 S Flemington, NJ50 TO 60 MPH WIND GUST IN RINGOES

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 10, 5:47 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.2 hours before the alert went out and 172 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 00:00Z on 2008-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 447 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, Brookhaven, NY at 00:00Z on 2008-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
447 J/kg
Mixed-layer CIN
-263 J/kg
Mixed-layer LCL
1846 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
51 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 110012
SVRPHI
NJC019-021-027-035-PAC017-110115-
/O.NEW.KPHI.SV.W.0061.080611T0011Z-080611T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
811 PM EDT TUE JUN 10 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN MERCER COUNTY IN CENTRAL NEW JERSEY...
  EXTREME SOUTHWESTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  NORTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...

* UNTIL 915 PM EDT

* AT 810 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  ERWINNA...OR ABOUT 18 MILES SOUTHEAST OF BETHLEHEM...AND MOVING
  NORTHEAST AT 36 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FLEMINGTON AND CLINTON BY 825 PM...
  ANNANDALE BY 830 PM...
  WHITE HOUSE STATION AND LEBANON BY 835 PM...
  BRIDGEWATER AND 6 MILES NORTHWEST OF SOMERVILLE BY 845 PM...
  MARTINSVILLE BY 850 PM...

THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.

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 100 AM WEDNESDAY
MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

LAT...LON 4067 7503 4077 7488 4074 7482 4060 7448
      4054 7455 4049 7448 4039 7462 4032 7466
      4024 7484 4041 7506 4045 7512 4053 7509
      4056 7525
TIME...MOT...LOC 0011Z 243DEG 32KT 4051 7503

$$

GORSE
1 follow-up statement
000 
WWUS51 KPHI 110044
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
843 PM EDT TUE JUN 10 2008

NJC027-PAC017-110053-
/O.CAN.KPHI.SV.W.0061.000000T0000Z-080611T0115Z/
MORRIS NJ-BUCKS PA-
843 PM EDT TUE JUN 10 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BUCKS AND EXTREME
SOUTHWESTERN MORRIS COUNTIES IS CANCELLED...

THE MAIN LINE OF THUNDERSTORMS HAS MOVED OUT OF THE AREA, THEREFORE
THE WARNING HAS BEEN CANCELLED. SOME ADDITIONAL SHOWERS AND 
THUNDERSTORMS HOWEVER WILL AFFECT PARTS OF THE REGION THROUGH THE 
REMAINDER OF THE EVENING HOURS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4039 7462 4032 7466 4025 7483 4037 7488
      4053 7489 4071 7476 4060 7448 4054 7455
      4049 7448
TIME...MOT...LOC 0043Z 243DEG 32KT 4064 7470

$$

NJC019-021-035-110115-
/O.CON.KPHI.SV.W.0061.000000T0000Z-080611T0115Z/
HUNTERDON NJ-SOMERSET NJ-MERCER NJ-
843 PM EDT TUE JUN 10 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHWESTERN MERCER...SOMERSET AND SOUTHEASTERN HUNTERDON
COUNTIES...

AT 840 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE 
HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR 
WHITE HOUSE STATION...OR 18 MILES NORTHWEST OF NEW 
BRUNSWICK...MOVING NORTHEAST AT 37 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MARTINSVILLE AND 8 MILES NORTHWEST OF BOUND BROOK BY 850 PM EDT...

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 100 AM EDT
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4039 7462 4032 7466 4025 7483 4037 7488
      4053 7489 4071 7476 4060 7448 4054 7455
      4049 7448
TIME...MOT...LOC 0043Z 243DEG 32KT 4064 7470

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 8:05 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex55 min
Jun 10, 8:16 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden41 min
Jun 11, 12:33 AM EDTSpecial Marine WarningPHI42 min
Jun 11, 1:59 AM EDTSpecial Marine WarningPHI46 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008Severe Thunderstorm Warnings in Pennsylvania, 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.