Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 241, NWS Philadelphia/Mount Holly

October 19, 20074 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 19, 2007, 11:36 PM EDT for 4 counties in New Jersey. It was in force for 54 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
Oct 19, 2007, 11:36 PM EDT (03:36 UTC)
Expired
Oct 20, 2007, 12:30 AM EDT
In force
54 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Burlington County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 03:35 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

TimeReportWhereRemark
Oct 19, 11:44 PM EDTTSTM WND DMGOceanport, NJLARGE TREE LIMBS AND WIRES KNOCKED DOWN.

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 00:00Z, 3.6 hours before the alert went out and 133 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2007-10-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 323 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2007-10-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 205 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
323 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
205 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 200336
SVRPHI
NJC005-023-025-029-200430-
/O.NEW.KPHI.SV.W.0241.071020T0336Z-071020T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1136 PM EDT FRI OCT 19 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  SOUTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1230 AM EDT

* AT 1131 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM JAMESBURG TO CLARKSBURG TO PRESIDENTIAL
  LAKES...OR ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF NEW
  BRUNSWICK TO 17 MILES EAST OF TRENTON TO 24 MILES SOUTH OF
  TRENTON...AND MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MORGANVILLE...MATAWAN...MARLBORO AND JACKSON BY 1145 PM EDT...
  MIDDLETOWN...HOLMDEL...HOWELL AND LINCROFT BY 1150 PM EDT...
  BAMBER LAKE AND COLLINGWOOD PARK BY 1155 PM EDT...

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.

WIND DAMAGE WITH THIS STORM MIGHT OCCUR WELL AHEAD OF ANY RAIN OR 
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. 
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS.

LAT...LON 4034 7396 3979 7408 3979 7413 3982 7410
      3992 7409 3980 7417 3981 7474 4024 7448
      4027 7450 4046 7446 4044 7420 4045 7411
      4041 7402 4042 7399 4045 7401 4045 7397
      4034 7395
TIME...MOT...LOC 0336Z 272DEG 38KT 4037 7434 4015 7439
          3989 7455

$$
 
TFG
1 follow-up statement
000 
WWUS51 KPHI 200405
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1204 AM EDT SAT OCT 20 2007

NJC023-200414-
/O.CAN.KPHI.SV.W.0241.000000T0000Z-071020T0430Z/
MIDDLESEX NJ-
1204 AM EDT SAT OCT 20 2007

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MIDDLESEX COUNTY
IS CANCELLED...

THE LINE OF SEVERE STORMS HAS MOVED SOUTHEAST OF THE AREA.

LAT...LON 4034 7396 4013 7402 3979 7408 3979 7413
      3982 7410 3992 7409 3980 7417 3986 7464
      4025 7428 4044 7418 4045 7411 4041 7402
      4042 7399 4045 7401 4045 7397 4034 7395
TIME...MOT...LOC 0404Z 272DEG 38KT 4040 7400 4015 7412
          3984 7456

$$

NJC005-025-029-200430-
/O.CON.KPHI.SV.W.0241.000000T0000Z-071020T0430Z/
MONMOUTH NJ-OCEAN NJ-BURLINGTON NJ-
1204 AM EDT SAT OCT 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR EAST CENTRAL BURLINGTON...NORTHERN OCEAN AND EASTERN MONMOUTH
COUNTIES...

AT 1201 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE AND A GUST FRONT ASSOCIATED WITH SEVERE 
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS TO 60 MPH.  THESE 
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LEONARDO TO 
FARMINGDALE TO PRESIDENTIAL LAKES...OR ALONG A LINE EXTENDING FROM 
14 MILES SOUTHEAST OF STATEN ISLAND TO 26 MILES SOUTH OF PERTH AMBOY 
TO 28 MILES SOUTH OF TRENTON...MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ELBERON...WEST BELMAR...WANAMASSA AND SPRING LAKE HEIGHTS BY 1210
  AM EDT...
  POINT PLEASANT BEACH...BAMBER LAKE...SILVER RIDGE AND POINT PLEASANT
  BEACH BY 1215 AM EDT...
  TOMS RIVER AND SOUTH TOMS RIVER BY 1220 AM EDT...

WIND DAMAGE WITH THIS STORM COULD OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

LAT...LON 4034 7396 4013 7402 3979 7408 3979 7413
      3982 7410 3992 7409 3980 7417 3986 7464
      4025 7428 4044 7418 4045 7411 4041 7402
      4042 7399 4045 7401 4045 7397 4034 7395
TIME...MOT...LOC 0404Z 272DEG 38KT 4040 7400 4015 7412
          3984 7456

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 19, 10:20 PM EDTSpecial Marine WarningPHI55 min
Oct 19, 10:53 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Morris, Somerset49 min
Oct 19, 11:15 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset41 min
Oct 19, 11:33 PM EDTSpecial Marine WarningPHI57 min
Oct 19, 11:38 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Cape May, Ocean67 min
Oct 19, 11:42 PM EDTSpecial Marine WarningPHI63 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2007Every severe thunderstorm warning in 2007

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.