Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 149, NWS Philadelphia/Mount Holly

September 16, 20105 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 16, 2010, 6:57 PM EDT for 5 counties in New Jersey. It was in force for 50 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
Sep 16, 2010, 6:57 PM EDT (22:57 UTC)
Expired
Sep 16, 2010, 7:47 PM EDT
In force
50 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ, Cumberland County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 22:59 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
Sep 16, 7:10 PM EDTTSTM WND DMG3 Ene Mays Landing, NJA COUPLE OF TREES KNOCKED DOWN ON VEHICLES IN HAMILTON TOWNSHIP. NO INJURIES REPORTED.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.0 hours before the alert went out and 150 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 2010-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2010-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
361 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.

219 
WUUS51 KPHI 162257
SVRPHI
NJC001-005-009-011-029-170000-
/O.NEW.KPHI.SV.W.0149.100916T2257Z-100917T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
657 PM EDT THU SEP 16 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF ATLANTIC CITY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  EXTREME NORTHWESTERN CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  EAST CENTRAL CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL 800 PM EDT

* AT 655 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE     
  HAIL...AND DAMAGING WINDS TO 60 MPH. THESE STORMS WERE LOCATED     
  ALONG A LINE EXTENDING FROM CHATSWORTH TO EGG HARBOR CITY TO       
  CORBIN CITY...OR ALONG A LINE EXTENDING FROM 20 MILES SOUTHWEST    
  OF TOMS RIVER TO 15 MILES NORTHWEST OF ATLANTIC CITY TO 13 MILES   
  SOUTHEAST OF MILLVILLE...AND MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BAMBER LAKE...WARREN GROVE...NEW GRETNA AND ENGLISH CREEK AROUND
  705 PM EDT...
  BAMBER LAKE...BROOKVILLE...TUCKERTON AND SOMERS POINT AROUND 710 PM
  EDT...
  BEACHWOOD AND TOMS RIVER AROUND 715 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS ARE DANGEROUS STORMS. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO 
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A 
SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3981 7407 3968 7412 3952 7425 3950 7433
      3953 7434 3953 7440 3949 7438 3949 7432
      3947 7429 3945 7429 3936 7440 3929 7452
      3930 7494 3953 7469 3991 7459 4000 7404
TIME...MOT...LOC 2256Z 258DEG 43KT 3984 7449 3955 7456
          3932 7481

$$

GORSE
2 follow-up statements
624 
WWUS51 KPHI 162331
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
731 PM EDT THU SEP 16 2010

NJC009-011-162339-
/O.CAN.KPHI.SV.W.0149.000000T0000Z-100917T0000Z/
CUMBERLAND NJ-CAPE MAY NJ-
731 PM EDT THU SEP 16 2010

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHWESTERN CAPE MAY
AND EAST CENTRAL CUMBERLAND COUNTIES IS CANCELLED...

THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE 
AREA, THEREFORE THE WARNING HAS BEEN CANCELLED.

HOWEVER, SOME ADDITIONAL SHOWERS AND ISOLATED THUNDERSTORMS WILL MOVE
THROUGH THE AREA THIS EVENING.

LAT...LON 3981 7407 3968 7412 3952 7425 3950 7433
      3953 7434 3953 7440 3949 7438 3949 7432
      3947 7429 3945 7429 3936 7440 3929 7452
      3934 7485 3953 7469 3995 7436 4000 7404
TIME...MOT...LOC 2329Z 258DEG 43KT 3992 7399 3963 7406
          3940 7431

$$

NJC001-005-029-170000-
/O.CON.KPHI.SV.W.0149.000000T0000Z-100917T0000Z/
OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
731 PM EDT THU SEP 16 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHEASTERN BURLINGTON...ATLANTIC AND SOUTHERN OCEAN COUNTIES...

AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER 
SIZE HAIL...AND DAMAGING WINDS TO 60 MPH.  THESE STORMS WERE LOCATED 
ALONG A LINE EXTENDING FROM SEASIDE PARK TO SHIP BOTTOM TO 
BRIGANTINE...OR ALONG A LINE EXTENDING FROM 8 MILES EAST OF TOMS 
RIVER TO 23 MILES SOUTH OF TOMS RIVER TO ATLANTIC CITY...MOVING EAST 
AT 50 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3981 7407 3968 7412 3952 7425 3950 7433
      3953 7434 3953 7440 3949 7438 3949 7432
      3947 7429 3945 7429 3936 7440 3929 7452
      3934 7485 3953 7469 3995 7436 4000 7404
TIME...MOT...LOC 2329Z 258DEG 43KT 3992 7399 3963 7406
          3940 7431

$$

GORSE
360 
WWUS51 KPHI 162347
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
747 PM EDT THU SEP 16 2010

NJC001-005-029-162355-
/O.CAN.KPHI.SV.W.0149.000000T0000Z-100917T0000Z/
OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
747 PM EDT THU SEP 16 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BURLINGTON...
ATLANTIC AND SOUTHERN OCEAN COUNTIES IS CANCELLED...

THE LINE OF THUNDERSTORMS THAT PROMPTED THE WARNING ARE MOVING OFF 
THE COAST AND HAVE WEAKENED TO BELOW SEVERE LIMITS. THEREFORE, THE 
WARNING HAS BEEN CANCELLED.

LAT...LON 3981 7407 3968 7412 3952 7425 3950 7433
      3953 7434 3953 7440 3949 7438 3949 7432
      3947 7429 3945 7429 3936 7440 3929 7452
      3934 7485 3953 7469 3995 7436 4000 7404
TIME...MOT...LOC 2345Z 258DEG 43KT 3996 7374 3967 7382
          3944 7407

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 3:46 PM EDTSpecial Weather StatementPHIMorris44 min
Sep 16, 4:36 PM EDTSevere Thunderstorm WarningPHICumberland, Gloucester, Salem54 min
Sep 16, 4:47 PM EDTSpecial Weather StatementPHIMercer, Middlesex, Somerset43 min
Sep 16, 4:55 PM EDTSevere Thunderstorm WarningPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 1 more80 min
Sep 16, 5:14 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem61 min
Sep 16, 5:37 PM EDTSpecial Marine WarningPHI83 min
Sep 16, 5:41 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Monmouth, Ocean64 min
Sep 16, 6:09 PM EDTTornado WarningPHIMonmouth, Ocean36 min
Sep 16, 6:18 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Monmouth and 2 more42 min
Sep 16, 6:21 PM EDTSpecial Marine WarningPHI84 min
Sep 16, 6:58 PM EDTSpecial Marine WarningPHI92 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2010Every severe thunderstorm warning in 2010

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.