Severe Thunderstorm Warning 91, NWS Philadelphia/Mount Holly

Issued

Aug 13, 2013, 7:05 AM EDT (11:05 UTC)

Expired

Aug 13, 2013, 7:45 AM EDT

In force

40 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Counties New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 11:07 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.

330 
WUUS51 KPHI 131105
SVRPHI
DEC003-NJC007-015-033-PAC045-101-131145-
/O.NEW.KPHI.SV.W.0091.130813T1105Z-130813T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
705 AM EDT TUE AUG 13 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  SOUTHEASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  NORTHEASTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  NORTHWESTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 745 AM EDT

* AT 703 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  TALLEYVILLE TO ELSMERE TO BEAR...MOVING NORTHEAST AT 40 MPH. THESE
  STORMS ARE CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WILMINGTON AND ARDEN AROUND 710 AM EDT...
  PENNSVILLE AND PENNS GROVE AROUND 715 AM EDT...
  CHESTER AROUND 720 AM EDT...
  SWARTHMORE AND NETHER PROVIDENCE TOWNSHIP AROUND 725 AM EDT...
  DREXEL HILL AND FOLCROFT AROUND 730 AM EDT...
  YEADON AND EAST LANSDOWNE AROUND 735 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.

DOPPLER RADAR HAS INDICATED SOME 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 ON THE LOWEST
FLOOR.

&&

LAT...LON 3979 7560 4010 7502 4002 7501 3999 7506
      4000 7503 3998 7501 3997 7502 3994 7500
      3977 7508 3961 7557 3962 7558 3969 7552
      3969 7553 3959 7562 3972 7563
TIME...MOT...LOC 1105Z 244DEG 35KT 3980 7556 3974 7556
          3963 7560

$$

FORECASTER:  DRAG

621 
WWUS51 KPHI 131134
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
734 AM EDT TUE AUG 13 2013

DEC003-131143-
/O.CAN.KPHI.SV.W.0091.000000T0000Z-130813T1145Z/
NEW CASTLE DE-
734 AM EDT TUE AUG 13 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE COUNTY
IS CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 3971 7550 3972 7548 3976 7546 3979 7541
      3982 7545 3989 7540 3999 7522 4005 7512
      4005 7511 3997 7511 3977 7508 3963 7556
TIME...MOT...LOC 1133Z 251DEG 25KT 3987 7532 3981 7532
          3970 7536

$$

NJC007-015-033-PAC045-101-131145-
/O.CON.KPHI.SV.W.0091.000000T0000Z-130813T1145Z/
CAMDEN NJ-PHILADELPHIA PA-DELAWARE PA-GLOUCESTER NJ-SALEM NJ-
734 AM EDT TUE AUG 13 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM EDT
FOR NORTHWESTERN SALEM...NORTHWESTERN GLOUCESTER...SOUTHEASTERN
DELAWARE...SOUTHWESTERN PHILADELPHIA AND NORTHWESTERN CAMDEN
COUNTIES...

AT 731 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM EDDYSTONE TO GIBBSTOWN TO BECKETT...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
PHILADELPHIA INTERNATIONAL AIRPORT AND FOLCROFT AROUND 740 AM EDT...
WEST DEPTFORD AND SOUTH PHILADELPHIA AROUND 745 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3971 7550 3972 7548 3976 7546 3979 7541
      3982 7545 3989 7540 3999 7522 4005 7512
      4005 7511 3997 7511 3977 7508 3963 7556
TIME...MOT...LOC 1133Z 251DEG 25KT 3987 7532 3981 7532
          3970 7536

$$

FORECASTER:  DRAG

Severe Thunderstorm Warnings in New Jersey, 2013Severe Thunderstorm Warnings in Pennsylvania, 2013Severe Thunderstorm Warnings in Delaware, 2013Every severe thunderstorm warning in 2013

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.