Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 158, NWS Philadelphia/Mount Holly

July 29, 2009Atlantic County, Burlington County, Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2009, 6:42 PM EDT for Atlantic County, Burlington County, Camden County, New Jersey. It was in force for 39 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 29, 2009, 6:42 PM EDT (22:42 UTC)
Expired
Jul 29, 2009, 7:21 PM EDT
In force
39 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ

The radar

The Philadelphia radar (KDIX), 26 km from the middle of the area, began a volume at 22:43 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
Jul 29, 6:55 PM EDTTSTM WND DMGTabernacle, NJNUMEROUS BRANCHES DOWN WITH ROAD CLOSURES.

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.

IssuedProductOfficeLasted
Jul 29, 12:49 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 128 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, Phillips Aaf/Abe, MD at 12:00Z on 2009-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1577 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2009-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 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
1577 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 292242
SVRPHI
NJC001-005-007-292345-
/O.NEW.KPHI.SV.W.0158.090729T2242Z-090729T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT WED JUL 29 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 745 PM EDT

* AT 639 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR HAMMONTON...OR 14
  MILES NORTHEAST OF VINELAND...AND MOVING NORTHEAST AT 35 MPH. WINDS 
  OF 57 MPH WERE REPORTED IN VINELAND NEW JERSEY WITH SMALL HAIL AND
  TORRENTIAL RAINS. 


* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ATSION...SHAMONG AND WHARTON STATE FOREST AROUND 650 PM EDT...
  CHATSWORTH...TABERNACLE AND 7 MILES SOUTHEAST OF LEISURETOWNE
  AROUND 655 PM EDT...
  PRESIDENTIAL LAKES AROUND 700 PM EDT...
  BROWNS MILLS AROUND 705 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4010 7468 3980 7441 3956 7471 3977 7501
TIME...MOT...LOC 2241Z 220DEG 62KT 3964 7481

$$

EBERWINE
2 follow-up statements
000 
WWUS51 KPHI 292301
SVSPHI

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

NJC001-007-292311-
/O.CAN.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/
CAMDEN NJ-ATLANTIC NJ-
701 PM EDT WED JUL 29 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ATLANTIC AND
SOUTHEASTERN CAMDEN COUNTIES IS CANCELLED...

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

LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459
TIME...MOT...LOC 2301Z 220DEG 62KT 3990 7452

$$

NJC005-292345-
/O.CON.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/
BURLINGTON NJ-
701 PM EDT WED JUL 29 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR BURLINGTON COUNTY...

AT 701 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR
PRESIDENTIAL LAKES...OR 18 MILES WEST OF TOMS RIVER...MOVING
NORTHEAST AT 35 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459
TIME...MOT...LOC 2301Z 220DEG 62KT 3990 7452

$$

EBERWINE
000 
WWUS51 KPHI 292321
SVSPHI

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

NJC005-292331-
/O.CAN.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/
BURLINGTON NJ-
721 PM EDT WED JUL 29 2009

...THE SEVERE THUNDERSTORM WARNING FOR BURLINGTON COUNTY IS
CANCELLED...

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

LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459
TIME...MOT...LOC 2321Z 220DEG 62KT 4016 7424

$$

EBERWINE-

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 10:15 AM EDTFlash Flood WatchPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more17 hr
Jul 29, 12:55 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Somerset65 min
Jul 29, 1:30 PM EDTAreal Flood AdvisoryPHIMorris, Somerset3 hr
Jul 29, 1:35 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Somerset55 min
Jul 29, 1:56 PM EDTSevere Thunderstorm WarningPHISussex64 min
Jul 29, 2:10 PM EDTTornado WarningPHISussex65 min
Jul 29, 2:21 PM EDTAreal Flood AdvisoryPHIMiddlesex3 hr
Jul 29, 2:32 PM EDTFlash Flood WarningPHISussex6 hr
Jul 29, 2:50 PM EDTFlash Flood WarningPHIMiddlesex4 hr
Jul 29, 3:52 PM EDTFlash Flood WarningPHIMorris, Somerset4 hr
Jul 29, 5:09 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer66 min
Jul 29, 5:48 PM EDTSpecial Marine WarningPHI57 min
Jul 29, 5:55 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Salem4 hr
Jul 29, 6:11 PM EDTSevere Thunderstorm WarningPHICumberland26 min
Jul 29, 6:26 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden, Gloucester38 min
Jul 29, 6:42 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more3 hr
Jul 29, 6:44 PM EDTFlash Flood WarningPHIMiddlesex, Somerset3 hr
Jul 29, 6:50 PM EDTAreal Flood AdvisoryPHIMorris94 min
Jul 29, 7:31 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth30 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2009Every severe thunderstorm warning 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.