Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 110, NWS Philadelphia/Mount Holly

June 26, 2009Burlington County, Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2009, 9:46 PM EDT for Burlington County, Monmouth County, Ocean County, New Jersey. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 26, 2009, 9:46 PM EDT (01:46 UTC)
Expired
Jun 26, 2009, 11:15 PM EDT
In force
89 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 13 km from the middle of the area, began a volume at 01:46 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 2:42 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.8 hours before the alert went out and 227 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, Wallops Is Stn, VA at 00:00Z on 2009-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3375 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, Wallops Is Stn, VA at 00:00Z on 2009-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
3375 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
823 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 270146
SVRPHI
NJC005-025-029-270315-
/O.NEW.KPHI.SV.W.0110.090627T0146Z-090627T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
946 PM EDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL 1115 PM EDT

* AT 945 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE
  HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 
  CLARKSBURG TO MARLTON...AND MOVING SOUTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SIX FLAGS THEME PARK...MARLTON LAKES...WRIGHTSTOWN AND PEMBERTON
  AROUND 950 PM EDT...
  LEISURETOWNE AROUND 955 PM EDT...
  JACKSONS MILLS...WOODRUFF...CASSVILLE AND BROWNS MILLS AROUND 1000
  PM EDT...
  TABERNACLE AROUND 1005 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL...CONTINUOUS 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 3979 7407 3968 7412 3951 7426 3955 7429
      3957 7425 3960 7426 3957 7431 3953 7429
      3973 7475 3978 7481 3981 7492 3987 7493
      3992 7499 4015 7465 4013 7460 4017 7461
      4017 7458 4025 7448 4012 7401
TIME...MOT...LOC 0145Z 295DEG 26KT 4017 7446 3986 7490

$$

SZATKOWSKI
1 follow-up statement
000 
WWUS51 KPHI 270231
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1031 PM EDT FRI JUN 26 2009

NJC025-270238-
/O.CAN.KPHI.SV.W.0110.000000T0000Z-090627T0315Z/
MONMOUTH NJ-
1031 PM EDT FRI JUN 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONMOUTH COUNTY
IS CANCELLED...

LAT...LON 3974 7471 3976 7471 3979 7468 3985 7465
      4000 7461 4003 7439 4005 7431 4007 7424
      4010 7402 3979 7407 3968 7412 3951 7426
      3955 7429 3957 7425 3960 7426 3957 7431
      3953 7429 3970 7468
TIME...MOT...LOC 0228Z 295DEG 26KT 3999 7403 3987 7429

$$

NJC005-029-270315-
/O.CON.KPHI.SV.W.0110.000000T0000Z-090627T0315Z/
OCEAN NJ-BURLINGTON NJ-
1031 PM EDT FRI JUN 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR EASTERN BURLINGTON AND OCEAN COUNTIES...

AT 1027 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE AN AREA OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY
SIZED HAIL. MOST OF THESE STORMS WERE LOCATED FROM LAVALLETTE TO 
BAMBER LAKE...WHILE ISOLATED STORMS WERE BETWEEN FORT DIX AND 
PRESIDENTIAL LAKES. ALL WERE MOVING SOUTHEAST AT 30 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING WAS
OCCURRING WITH THESE STORMS. 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 3974 7471 3976 7471 3979 7468 3985 7465
      4000 7461 4003 7439 4005 7431 4007 7424
      4010 7402 3979 7407 3968 7412 3951 7426
      3955 7429 3957 7425 3960 7426 3957 7431
      3953 7429 3970 7468
TIME...MOT...LOC 0228Z 295DEG 26KT 3999 7403 3987 7429

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 8:55 PM EDTSpecial Marine WarningPHI81 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.