Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 6, NWS Philadelphia/Mount Holly

May 16, 2015Monroe County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2015, 5:26 PM EDT for Monroe County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 49 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: May 16, 2015, 5:26 PM EDT (21:26 UTC)
Expired: May 16, 2015, 6:15 PM EDT
In force: 49 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Sussex County, NJ, Warren County, NJ, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 21:11 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

Time	Report	Where	Remark
May 16, 5:48 PM EDT	TSTM WND DMG	Stillwater Twp, NJ	WIRES DOWN IN STILLWATER TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.4 hours before the alert went out and 171 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: 903 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 170 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.

860 
WUUS51 KPHI 162126
SVRPHI
NJC037-041-PAC089-162215-
/O.NEW.KPHI.SV.W.0006.150516T2126Z-150516T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
526 PM EDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN WARREN COUNTY IN NORTHWESTERN NEW JERSEY...
  SOUTHWESTERN SUSSEX COUNTY IN NORTHWESTERN NEW JERSEY...
  EAST CENTRAL MONROE COUNTY IN NORTHEASTERN PENNSYLVANIA...

* UNTIL 615 PM EDT

* AT 525 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED NEAR BUSHKILL...OR 13 MILES
  NORTHWEST OF NEWTON...AND MOVING SOUTHEAST AT 25 MPH.

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  FLATBROOKVILLE AND MILLBROOK AROUND 535 PM EDT.
  CRANDON LAKES AROUND 540 PM EDT.
  BRANCHVILLE AND FIVE POINTS AROUND 545 PM EDT.
  NEWTON AND GREENDELL AROUND 600 PM EDT.
  ANDOVER AROUND 605 PM EDT.
  LAKE MOHAWK AROUND 610 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIDDEN
LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4106 7456 4088 7486 4111 7519 4114 7509
      4108 7503 4116 7490 4120 7488 4120 7486
TIME...MOT...LOC 2125Z 310DEG 21KT 4114 7498 

$$

ROBERTSON

1 follow-up statement

324 
WWUS51 KPHI 162155
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 PM EDT SAT MAY 16 2015

NJC037-041-PAC089-162215-
/O.CON.KPHI.SV.W.0006.000000T0000Z-150516T2215Z/
WARREN NJ-SUSSEX NJ-MONROE PA-
555 PM EDT SAT MAY 16 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHEASTERN WARREN...SOUTHWESTERN SUSSEX AND EAST CENTRAL MONROE
COUNTIES...

AT 554 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED OVER FIVE POINTS...OR NEAR NEWTON...
MOVING SOUTHEAST AT 25 MPH.

THIS SEVERE STORM WILL BE NEAR...
  NEWTON AND GREENDELL AROUND 605 PM EDT.
  ANDOVER AROUND 610 PM EDT.
  LAKE MOHAWK AROUND 615 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIDDEN
LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF THESE
STORMS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE 
WEATHER... INCLUDING LARGE HAIL...DESTRUCTIVE STRAIGHT LINE WINDS... 
AND POSSIBLY TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...PREFERABLY 
INTO A BASEMENT...OR AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.

&&

LAT...LON 4106 7456 4088 7486 4111 7519 4114 7509
      4108 7503 4116 7490 4120 7488 4120 7486
TIME...MOT...LOC 2154Z 307DEG 21KT 4106 7486 

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 4:46 PM EDT	Special Weather Statement	PHI	Pike	44 min
May 16, 4:55 PM EDT	Special Weather Statement	PHI	Lehigh	35 min
May 16, 5:09 PM EDT	Special Weather Statement	PHI	Berks, Chester	66 min
May 16, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	39 min
May 16, 5:57 PM EDT	Special Weather Statement	PHI	Berks, Chester, Lehigh, Montgomery	63 min
May 16, 6:03 PM EDT	Areal Flood Advisory	PHI	Monroe	3 hr
May 16, 6:16 PM EDT	Special Weather Statement	PHI	Lehigh	44 min
May 16, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	44 min
May 16, 6:45 PM EDT	Severe Thunderstorm Warning	PHI	Chester	45 min
May 16, 6:55 PM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	3 hr
May 16, 6:58 PM EDT	Special Weather Statement	PHI	Monroe	62 min
May 16, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	26 min
May 16, 7:34 PM EDT	Special Weather Statement	PHI	Bucks	41 min
May 16, 7:35 PM EDT	Special Weather Statement	PHI	Delaware	40 min
May 16, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	50 min
May 16, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	37 min
May 16, 7:15 PM EDT	Tornado Warning	PHI	Morris, Somerset	11 min
May 16, 7:28 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	28 min
May 16, 7:37 PM EDT	Special Weather Statement	PHI	Sussex	23 min
May 16, 7:57 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Monmouth, Morris, Somerset, Sussex	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2015 Severe Thunderstorm Warnings in Pennsylvania, 2015 Every severe thunderstorm warning in 2015

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.