Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 127, NWS Philadelphia/Mount Holly

July 26, 2012Hunterdon County, Morris County, Somerset County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 26, 2012, 6:22 PM EDT for Hunterdon County, Morris County, Somerset County, New Jersey; Bucks County, Pennsylvania. It was in force for 83 min. 6 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: Jul 26, 2012, 6:22 PM EDT (22:22 UTC)
Expired: Jul 26, 2012, 7:45 PM EDT
In force: 83 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 22:22 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 26, 7:00 PM EDT	TSTM WND DMG	Flemington, NJ	TREES DOWN NEAR FLEMINGTON
Jul 26, 7:00 PM EDT	TSTM WND GST 55	Chester, NJ	ESTIMATED 50 TO 60 MPH WINDS
Jul 26, 7:06 PM EDT	TSTM WND DMG	Rockaway, NJ	* 3 INJ * TREES DOWN ON HOUSE. 3 INJURED...TWO ADULTS AND ONE INFANT.
Jul 26, 7:08 PM EDT	TSTM WND GST 55	Chester, NJ	ESTIMATED WINDS 50 TO 60 MPH.
Jul 26, 7:21 PM EDT	TSTM WND DMG	4 S Millington, NJ	TREE BRANCHES DOWN ON INTERSTATE 78 AT MILE MARKER 33
Jul 26, 7:45 PM EDT	TSTM WND DMG	Bound Brook, NJ	TREES WIRES 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
Jul 26, 3:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.4 hours before the alert went out and 151 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: 1459 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 160 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.

256 
WUUS51 KPHI 262222
SVRPHI
NJC019-027-035-PAC017-262345-
/O.NEW.KPHI.SV.W.0127.120726T2222Z-120726T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
622 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF MORRISTOWN...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF SOMERVILLE...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  NORTHERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...

* UNTIL 745 PM EDT

* AT 620 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 THE POCONOS TO THE LEHIGH
  VALLEY IN PENNSYLVANIA...AND MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SPRINGTOWN AND PLEASANT VALLEY AROUND 625 PM EDT...
  FERNDALE AND RIEGELSVILLE AROUND 630 PM EDT...
  PIPERSVILLE...OTTSVILLE...BEDMINSTER AND REVERE AROUND 635 PM
  EDT...
  GARDENVILLE AND BYRAM AROUND 640 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
THURSDAY EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4090 7427 4090 7433 4074 7436 4066 7445
      4066 7440 4056 7453 4049 7446 4038 7461
      4038 7472 4042 7477 4034 7486 4034 7493
      4042 7548 4056 7531 4071 7498 4091 7477
      4092 7466 4109 7451 4104 7450 4100 7429
TIME...MOT...LOC 2220Z 283DEG 44KT 4111 7518 4060 7535

$$

IOVINO

1 follow-up statement

857 
WWUS51 KPHI 262307
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
707 PM EDT THU JUL 26 2012

NJC019-027-035-PAC017-262345-
/O.CON.KPHI.SV.W.0127.000000T0000Z-120726T2345Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-
707 PM EDT THU JUL 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHERN BUCKS...SOMERSET...MORRIS AND HUNTERDON COUNTIES...

AT 705 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE 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 HOPATCONG AND FLEMINGTON IN 
NEW JERSEY TO PIPERSVILLE IN PENNSYLVANIA...MOVING EAST AT 50 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  KINNELON...BUTLER...MILLINGTON AND MARTINSVILLE BY 715 PM EDT...
  PEQUANNOCK TOWNSHIP...RIVERDALE...WATCHUNG AND SOMERSET BY 720 PM
  EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
THURSDAY EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4090 7427 4090 7433 4074 7436 4066 7445
      4066 7440 4056 7453 4049 7446 4038 7461
      4038 7472 4042 7477 4034 7486 4034 7493
      4042 7548 4056 7531 4071 7498 4091 7477
      4092 7466 4109 7451 4104 7450 4100 7429
TIME...MOT...LOC 2306Z 283DEG 44KT 4098 7454 4048 7471

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 5:26 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	18 hr
Jul 26, 6:54 AM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	66 min
Jul 26, 7:41 AM EDT	Special Weather Statement	PHI	Sussex, Warren	64 min
Jul 26, 5:46 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	74 min
Jul 26, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex	76 min
Jul 26, 7:28 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	63 min
Jul 26, 7:31 PM EDT	Special Marine Warning	PHI		89 min
Jul 26, 7:37 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Ocean	83 min
Jul 26, 7:58 PM EDT	Special Marine Warning	PHI		2 hr
Jul 26, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	54 min
Jul 26, 6:03 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	42 min
Jul 26, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Northampton	95 min
Jul 26, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia	89 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012 Severe Thunderstorm Warnings in Pennsylvania, 2012 Every severe thunderstorm warning in 2012

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.