Severe Thunderstorm Warning 187, NWS Philadelphia/Mount Holly

Issued

Aug 9, 2012, 4:57 PM EDT (20:57 UTC)

Expired

Aug 9, 2012, 6:15 PM EDT

In force

78 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Bucks County, PA

The Philadelphia radar (KDIX), 45 km from the middle of the area, began a volume at 20:58 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.

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

668 
WUUS51 KPHI 092057
SVRPHI
NJC005-021-023-025-PAC017-092215-
/O.NEW.KPHI.SV.W.0187.120809T2057Z-120809T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
457 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF TRENTON...
  WEST CENTRAL MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  SOUTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 615 PM EDT

* AT 453 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM NEWTOWN TO LANGHORNE...OR ALONG
  A LINE EXTENDING FROM 8 MILES WEST OF TRENTON TO 9 MILES SOUTHWEST
  OF TRENTON...AND MOVING NORTHEAST AT 15 MPH. NATIONAL WEATHER
  SERVICE DOPPLER RADAR IS CURRENTLY SHOWING A MICROBURST WITH AROUND
  60 MPH IN NORTHWEST MERCER COUNTY.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  FLORENCE...WOODSIDE AND TULLYTOWN AROUND 505 PM EDT...
  YARDLEY AROUND 510 PM EDT...
  EWING AROUND 515 PM EDT...
  PENNINGTON AROUND 520 PM EDT...
  BORDENTOWN AROUND 525 PM EDT...
  TRENTON AROUND 530 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. 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 THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4017 7440 4008 7490 4026 7495 4039 7467
      4039 7464 4039 7462 4038 7462 4039 7459
      4042 7458 4044 7454
TIME...MOT...LOC 2057Z 243DEG 13KT 4027 7488 4018 7489

$$

TFG

514 
WWUS51 KPHI 092146
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
546 PM EDT THU AUG 9 2012

NJC005-021-023-025-PAC017-092215-
/O.CON.KPHI.SV.W.0187.000000T0000Z-120809T2215Z/
MERCER NJ-BUCKS PA-MIDDLESEX NJ-BURLINGTON NJ-MONMOUTH NJ-
546 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR WEST CENTRAL MONMOUTH...NORTH CENTRAL BURLINGTON...SOUTHWESTERN
MIDDLESEX...SOUTHEASTERN BUCKS AND EASTERN MERCER COUNTIES...

AT 540 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PRINCETON JUNCTION TO TULLYTOWN...OR ALONG A LINE
EXTENDING FROM 10 MILES NORTHEAST OF TRENTON TO TRENTON...MOVING EAST
AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WHITE HORSE...MERCERVILLE-HAMILTON SQUARE AND FIELDSBORO BY 550 PM
  EDT...
  BORDENTOWN BY 555 PM EDT...
  MONMOUTH JUNCTION AND EDINBURG BY 600 PM EDT...
  CROSSWICKS AND YARDVILLE-GROVEVILLE BY 605 PM EDT...
  HIGHTSTOWN AND ALLENTOWN BY 615 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. TREES
WERE KNOCKED DOWN IN TRENTON AND A WINDOW AT MERCER COUNTY 
AIRPORT WAS DAMAGED. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS!

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4009 7486 4037 7465 4038 7462 4037 7460
      4038 7458 4038 7451 4017 7440 4017 7441
TIME...MOT...LOC 2145Z 249DEG 14KT 4033 7461 4015 7476

$$ 

TFG

Severe Thunderstorm Warnings in New Jersey, 2012Severe Thunderstorm Warnings in Pennsylvania, 2012Every severe thunderstorm warning in 2012

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.