Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 112, NWS Philadelphia/Mount Holly

July 9, 2014Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2014, 5:38 PM EDT for Sussex County, Warren County, New Jersey. It was in force for 64 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: Jul 9, 2014, 5:38 PM EDT (21:38 UTC)
Expired: Jul 9, 2014, 6:42 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 117 km from the middle of the area, began a volume at 21:41 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
Jul 9, 6:00 PM EDT	TSTM WND DMG	Blairstown, NJ	A COUPLE OF TREES DOWN IN AND AROUND BLAIRSTOWN.

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
Jul 9, 4:12 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 170 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: 5 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 1145 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 59 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.

499 
WUUS51 KPHI 092138
SVRPHI
NJC037-041-092300-
/O.NEW.KPHI.SV.W.0112.140709T2138Z-140709T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
538 PM EDT WED JUL 9 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 700 PM EDT

* AT 536 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  PAIR OF SEVERE THUNDERSTORMS. THE LEADING STORM WAS NEAR ROSETO...
  MOVING EAST AT 45 MPH. THIS STORM IS CAPABLE OF PRODUCING 
  QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLUMBIA AND BELVIDERE AROUND 545 PM EDT...
  OXFORD AROUND 550 PM EDT...
  BLAIRSTOWN AND HOPE AROUND 555 PM EDT...
  MILLBROOK AND ALLAMUCHY-PANTHER VALLEY AROUND 600 PM EDT...
  GREENDELL AND FIVE POINTS AROUND 605 PM EDT...
  NEWTON AND ANDOVER AROUND 610 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
WEDNESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4126 7450 4113 7445 4097 7464 4092 7465
      4090 7470 4092 7473 4091 7478 4083 7483
      4068 7520 4075 7520 4078 7517 4077 7513
      4082 7509 4085 7509 4086 7505 4099 7513
      4104 7503 4110 7497
TIME...MOT...LOC 2138Z 248DEG 38KT 4091 7519

$$

TFG

2 follow-up statements

056 
WWUS51 KPHI 092219
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
619 PM EDT WED JUL 9 2014

NJC037-041-092300-
/O.CON.KPHI.SV.W.0112.000000T0000Z-140709T2300Z/
WARREN NJ-SUSSEX NJ-
619 PM EDT WED JUL 9 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SUSSEX AND WARREN COUNTIES...

AT 616 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS TO 60 MPH.  THE STRONGEST STORM WAS
LOCATED NEAR OXFORD...OR 14 MILES NORTHEAST OF EASTON...MOVING EAST
AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  GREAT MEADOWS-VIENNA BY 625 PM EDT...
  HACKETTSTOWN AND ALLAMUCHY-PANTHER VALLEY BY 630 PM EDT...
  7 MILES SOUTH OF GREENDELL BY 635 PM EDT...
  STANHOPE AND ANDOVER BY 640 PM EDT...
  HOPATCONG AND 6 MILES SOUTH OF LAKE MOHAWK BY 645 PM EDT...
  9 MILES SOUTH OF OGDENSBURG BY 650 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

STORMS TODAY HAVE HAD A HISTORY OF PRODUCING LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
WEDNESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4113 7445 4097 7464 4092 7465 4090 7470
      4092 7473 4091 7478 4083 7483 4075 7503
      4077 7512 4082 7509 4085 7509 4086 7505
      4099 7513 4126 7450
TIME...MOT...LOC 2219Z 248DEG 38KT 4083 7496

$$

TFG

151 
WWUS51 KPHI 092242
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT WED JUL 9 2014

NJC037-041-092252-
/O.CAN.KPHI.SV.W.0112.000000T0000Z-140709T2300Z/
WARREN NJ-SUSSEX NJ-
642 PM EDT WED JUL 9 2014

...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX AND WARREN COUNTIES IS
CANCELLED...

THE SEVERE THUNDERSTORM IS IN SOUTHWEST MORRIS COUNTY.

LAT...LON 4113 7445 4097 7464 4092 7465 4090 7470
      4092 7473 4091 7478 4083 7483 4075 7503
      4077 7512 4082 7509 4085 7509 4086 7505
      4099 7513 4126 7450
TIME...MOT...LOC 2242Z 248DEG 38KT 4091 7466

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:16 PM EDT	Special Marine Warning	PHI		119 min
Jul 8, 8:21 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Cumberland, Gloucester, Salem	69 min
Jul 8, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	69 min
Jul 8, 8:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	73 min
Jul 8, 9:02 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May, Cumberland	58 min
Jul 8, 9:12 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	63 min
Jul 8, 9:22 PM EDT	Special Marine Warning	PHI		113 min
Jul 8, 9:48 PM EDT	Special Marine Warning	PHI		117 min
Jul 9, 8:52 AM EDT	Small Craft Advisory	PHI		12 hr
Jul 9, 2:48 PM EDT	Special Weather Statement	PHI	Sussex	72 min
Jul 9, 3:25 PM EDT	Special Weather Statement	PHI	Sussex	65 min
Jul 9, 3:28 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	49 min
Jul 9, 6:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris	63 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Every severe thunderstorm warning in 2014

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.