Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 88, NWS Philadelphia/Mount Holly

June 16, 2008Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 16, 2008, 6:01 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 44 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 16, 2008, 6:01 PM EDT (22:01 UTC)
Expired: Jun 16, 2008, 6:45 PM EDT
In force: 44 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 100 km from the middle of the area, began a volume at 22:02 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

Time	Report	Where	Remark
Jun 16, 6:06 PM EDT	HAIL 0.75	3 Se Allamuchy-Panther, NJ	3/4 INCH HAIL ALONG I-80 NEAR EXIT 25.
Jun 16, 6:20 PM EDT	TSTM WND GST 70	5 Se Hopatcong, NJ	60 TO 70 MPH WINDS NEAR THE KENVIL AREA.
Jun 16, 6:30 PM EDT	TSTM WND DMG	Rockaway, NJ	TREES AND WIRES REPORTED DOWN.

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.

Issued	Product	Office	Lasted
Jun 16, 1:21 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.0 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1192 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 97 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 162202
SVRPHI
NJC027-035-162245-
/O.NEW.KPHI.SV.W.0088.080616T2201Z-080616T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
601 PM EDT MON JUN 16 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTH CENTRAL SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 645 PM EDT

* AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A COUPLE OF SEVERE THUNDERSTORM CELLS CAPABLE OF PRODUCING PENNY
  SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS
  WERE LOCATED NEAR KINNELON...OR ABOUT 7 MILES WEST OF
  PATERSON...AND MOVING EAST AT 25 MPH, AND ANOTHER STORM WAS NEAR
  LAKE HOPATCONG MOVING EAST-NORTHEAST AT 25 MPH..

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHITE
  MEADOW LAKE...WHARTON...VICTORY GARDENS...ROCKAWAY...MOUNTAIN
  LAKES...MORRIS PLAINS...MENDHAM...HANOVER TOWNSHIP...FLORHAM PARK
  AND BERNARDSVILLE

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...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 900 PM MONDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

LAT...LON 4089 7432 4089 7433 4086 7432 4072 7442
      4066 7458 4064 7468 4078 7477 4088 7479
      4091 7463 4099 7450 4099 7431
TIME...MOT...LOC 2201Z 263DEG 70KT 4097 7409

$$

1 follow-up statement

000 
WWUS51 KPHI 162234
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
633 PM EDT MON JUN 16 2008

NJC027-035-162245-
/O.CON.KPHI.SV.W.0088.000000T0000Z-080616T2245Z/
MORRIS NJ-SOMERSET NJ-
633 PM EDT MON JUN 16 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTH CENTRAL SOMERSET AND MORRIS COUNTIES...

AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR LONG VALLEY...MOVING EAST AT 25 TO 30 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT MONDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

LAT...LON 4089 7432 4089 7433 4086 7432 4072 7442
      4066 7458 4064 7468 4078 7477 4088 7479
      4091 7463 4099 7450 4099 7431
TIME...MOT...LOC 2233Z 263DEG 70KT 4104 7327

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 4:59 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	31 min
Jun 16, 5:12 PM EDT	Special Marine Warning	PHI		48 min
Jun 16, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	24 min
Jun 16, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	67 min
Jun 16, 5:48 PM EDT	Special Marine Warning	PHI		27 min
Jun 16, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	37 min
Jun 16, 6:00 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	57 min
Jun 16, 6:06 PM EDT	Special Marine Warning	PHI		84 min
Jun 16, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	36 min
Jun 16, 7:08 PM EDT	Special Marine Warning	PHI		39 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008 Every 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.