Alert archive / New Jersey / Tornado Warnings in 2009

Tornado Warning 8, NWS Philadelphia/Mount Holly

July 29, 2009Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this tornado warning at Jul 29, 2009, 2:10 PM EDT for Sussex County, New Jersey. It was in force for 65 min. 2 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 29, 2009, 2:10 PM EDT (18:10 UTC)
Expired: Jul 29, 2009, 3:15 PM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 144 km from the middle of the area, began a volume at 18:13 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 29, 2:48 PM EDT	TORNADO 2	5 Nne Pellettown, NJ	CONFIRMED EF2 TORNADO. NUMEROUS TREES DOWN. PROPERTY DAMAGE MAINLY TO BARNS AND SILOS. PLEASE REFER TO PHLPNSPHI FOR MORE INFO. MAX WINDS 120 MPH.
Jul 29, 2:50 PM EDT	TSTM WND DMG	5 Nne Pellettown, NJ	TREES DOWN ON RT 23 IN WANTAGE.

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 29, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.2 hours before the alert went out and 165 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: 594 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS51 KPHI 291810
TORPHI
NJC037-291915-
/O.NEW.KPHI.TO.W.0008.090729T1810Z-090729T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
210 PM EDT WED JUL 29 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  THIS INCLUDES THE CITY OF NEWTON...

* UNTIL 315 PM EDT

* THE TORNADO WILL BE NEAR...
  CRANDON LAKES BY 215 PM EDT...
  BRANCHVILLE BY 220 PM EDT...
  HAINESVILLE BY 225 PM EDT...
  6 MILES NORTHWEST OF SUSSEX BY 235 PM EDT...
  HIGH POINT BY 240 PM EDT...
  9 MILES NORTHWEST OF VERNON VALLEY BY 245 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE STORM HAS SHOWN GOOD ROTATION INDICATIVE OF A POSSIBLE TORNADO.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
WEDNESDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN
PENNSYLVANIA.

&&

LAT...LON 4122 7442 4099 7485 4110 7498 4111 7495
      4115 7491 4121 7487 4122 7488 4127 7484
      4132 7479 4135 7471 4135 7468
TIME...MOT...LOC 1809Z 232DEG 30KT 4114 7492

$$

EBERWINE

2 follow-up statements

000 
WWUS51 KPHI 291848
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
248 PM EDT WED JUL 29 2009

NJC037-291915-
/O.CON.KPHI.TO.W.0008.000000T0000Z-090729T1915Z/
SUSSEX NJ-
248 PM EDT WED JUL 29 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM EDT FOR NORTHERN
SUSSEX COUNTY...

AT 241 PM EDT...THE SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR HIGH POINT...OR 6 MILES SOUTHEAST OF MONTAGUE...
MOVING NORTHEAST AT 35 MPH.

THE STORM WILL BE NEAR...
  HIGH POINT BY 250 PM EDT...
  8 MILES NORTHWEST OF VERNON VALLEY BY 255 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
WEDNESDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN
PENNSYLVANIA.

&&

LAT...LON 4124 7446 4114 7469 4119 7480 4125 7481
      4120 7481 4121 7482 4122 7483 4128 7482
      4132 7479 4135 7471 4135 7468
TIME...MOT...LOC 1844Z 232DEG 30KT 4128 7467

$$

EBERWINE

000 
WWUS51 KPHI 291909
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
309 PM EDT WED JUL 29 2009

NJC037-291919-
/O.EXP.KPHI.TO.W.0008.000000T0000Z-090729T1915Z/
SUSSEX NJ-
309 PM EDT WED JUL 29 2009

...THE TORNADO WARNING FOR NORTHERN SUSSEX COUNTY WILL EXPIRE AT 315
PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
WEDNESDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN
PENNSYLVANIA.

LAT...LON 4124 7446 4114 7469 4119 7480 4125 7481
      4120 7481 4121 7482 4122 7483 4128 7482
      4132 7479 4135 7471 4135 7468
TIME...MOT...LOC 1909Z 232DEG 30KT 4141 7445

$$

EBERWINE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 10:15 AM EDT	Flash Flood Watch	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	17 hr
Jul 29, 12:55 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	65 min
Jul 29, 1:30 PM EDT	Areal Flood Advisory	PHI	Morris, Somerset	3 hr
Jul 29, 1:35 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	55 min
Jul 29, 1:56 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	64 min
Jul 29, 2:21 PM EDT	Areal Flood Advisory	PHI	Middlesex	3 hr
Jul 29, 2:32 PM EDT	Flash Flood Warning	PHI	Sussex	6 hr
Jul 29, 2:50 PM EDT	Flash Flood Warning	PHI	Middlesex	4 hr
Jul 29, 3:52 PM EDT	Flash Flood Warning	PHI	Morris, Somerset	4 hr
Jul 29, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	66 min
Jul 29, 5:48 PM EDT	Special Marine Warning	PHI		57 min
Jul 29, 5:55 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Salem	4 hr
Jul 29, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland	26 min
Jul 29, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Gloucester	38 min
Jul 29, 6:42 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more	3 hr
Jul 29, 6:42 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden	39 min
Jul 29, 6:44 PM EDT	Flash Flood Warning	PHI	Middlesex, Somerset	3 hr
Jul 29, 6:50 PM EDT	Areal Flood Advisory	PHI	Morris	94 min
Jul 29, 7:31 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	30 min

Nearby

Tornado Warnings in New Jersey, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.