Alert archive / New Jersey / Tornado Warnings in 2019

Tornado Warning 2, NWS Philadelphia/Mount Holly

April 15, 2019Delaware County, Montgomery County, Philadelphia County, Pennsylvania; New Castle County, Delaware; 4 counties in New Jersey

NWS Philadelphia/Mount Holly issued this tornado warning at Apr 15, 2019, 3:19 AM EDT for Delaware County, Montgomery County, Philadelphia County, Pennsylvania; New Castle County, Delaware; 4 counties in New Jersey. It was in force for 26 min. 8 reports 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
Apr 15, 2019, 3:19 AM EDT (07:19 UTC)
Expired
Apr 15, 2019, 3:45 AM EDT
In force
26 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

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

The radar

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 07:22 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
Apr 15, 3:20 AM EDTTSTM WND GST 601 Ssw Mantua, PA
Apr 15, 3:25 AM EDTTSTM WND GST 64Logan Twp., NJ
Apr 15, 3:26 AM EDTTSTM WND DMG1 Se Point Breeze, PATREES UPROOTED, INCLUDING ONE ONTO A VEHICLE, AND A POWER POLE DOWN IN SOUTH PHILLY. TIME ESTIMATED FROM RADAR.
Apr 15, 3:27 AM EDTTSTM WND GST 63Philadelphia Internatio, PA
Apr 15, 3:27 AM EDTTSTM WND GST 64Philadelphia Internatio, PA
Apr 15, 3:30 AM EDTTSTM WND DMG1 S Center City, PAA TREE WAS UPROOTED IN NORTHERN LIBERTIES.
Apr 15, 3:33 AM EDTTSTM WND DMG1 Sse Whitman Park, NJROOF BLOWN OFF AN APARTMENT BUILDING AT S 8TH STREET AND FERRY AVENUE. TIME ESTIMATED FROM RADAR.
Apr 15, 3:40 AM EDTTSTM WND DMG1 Ssw Haddonfield, NJHALF OF A TREE ROUGHLY 1-2 FEET IN DIAMETER FELL ON A CAR AND FENCE IN A RESIDENTIAL AREA. TIME ESTIMATED FROM RADAR.

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
Apr 15, 1:05 AM EDTTornado WatchSPC5 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 7.3 hours before the alert went out and 207 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, Washington/Dulle, VA at 00:00Z on 2019-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 243 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, Washington/Dulle, VA at 00:00Z on 2019-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 326 square meters per square second.1939587897Sfc1 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
243 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
961 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
326 m²/s²
0-3 km storm-relative helicity
478 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

825 
WFUS51 KPHI 150719
TORPHI
DEC003-NJC005-007-015-033-PAC045-091-101-150745-
/O.NEW.KPHI.TO.W.0002.190415T0719Z-190415T0745Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
319 AM EDT MON APR 15 2019

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Northeastern New Castle County in northern Delaware...
  North central Salem County in southern New Jersey...
  Northwestern Camden County in southern New Jersey...
  Northwestern Gloucester County in southern New Jersey...
  Northwestern Burlington County in southern New Jersey...
  Southeastern Montgomery County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...

* Until 345 AM EDT.
    
* At 318 AM EDT, a severe thunderstorm capable of producing a tornado
  was located near Chester Township, or 8 miles northeast of
  Wilmington, moving northeast at 55 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Philadelphia, Camden, Wilmington, Gloucester City, Cherry Hill,
  Chester, Deptford, West Deptford, Bellmawr, Yeadon, Woodbury,
  Carneys Point, Palmyra, Folcroft, Swarthmore, Paulsboro, Penns
  Grove, Jenkintown, Magnolia and Westville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.

&&

LAT...LON 3966 7541 3983 7556 4015 7514 3990 7491
TIME...MOT...LOC 0718Z 234DEG 48KT 3981 7541 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

MPS
1 follow-up statement
706 
WWUS51 KPHI 150737
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
337 AM EDT MON APR 15 2019

DEC003-NJC005-007-015-033-PAC045-091-101-150747-
/O.EXP.KPHI.TO.W.0002.000000T0000Z-190415T0745Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
Montgomery PA-Philadelphia PA-Delaware PA-
337 AM EDT MON APR 15 2019

...THE TORNADO WARNING FOR NORTHEASTERN NEW CASTLE...NORTH CENTRAL
SALEM...NORTHWESTERN CAMDEN...NORTHWESTERN GLOUCESTER...NORTHWESTERN
BURLINGTON...SOUTHEASTERN MONTGOMERY...PHILADELPHIA AND DELAWARE
COUNTIES WILL EXPIRE AT 345 AM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A tornado watch remains in effect until 700 AM EDT for northern
Delaware...southern New Jersey...and southeastern Pennsylvania.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Mount Holly NJ.

LAT...LON 3966 7541 3983 7556 4015 7514 3990 7491
TIME...MOT...LOC 0737Z 234DEG 48KT 3994 7518 

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 9:19 PM EDTAreal Flood AdvisoryPHIBerks3 hr
Apr 15, 12:03 AM EDTSpecial Weather StatementPHIMonroe27 min
Apr 15, 1:10 AM EDTSpecial Weather StatementPHISchuylkill50 min
Apr 15, 1:26 AM EDTAreal Flood AdvisoryPHICarbon, Monroe4 hr
Apr 15, 1:28 AM EDTSevere Thunderstorm WarningPHICarbon, Monroe47 min
Apr 15, 1:43 AM EDTAreal Flood AdvisoryPHIBerks4 hr
Apr 15, 1:58 AM EDTSpecial Weather StatementPHIBerks, Carbon, Monroe47 min
Apr 15, 2:21 AM EDTAreal Flood AdvisoryPHILehigh, Northampton4 hr
Apr 15, 2:28 AM EDTSpecial Weather StatementPHIChester32 min
Apr 15, 2:34 AM EDTSpecial Weather StatementPHIBerks, Chester, Lehigh, Northampton41 min
Apr 15, 2:46 AM EDTSevere Thunderstorm WarningPHIDelaware44 min
Apr 15, 3:03 AM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Montgomery, Northampton20 min
Apr 15, 3:11 AM EDTSpecial Weather StatementPHIBucks, Montgomery, Northampton49 min
Apr 15, 3:19 AM EDTWind AdvisoryPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more18 hr
Apr 15, 3:27 AM EDTSevere Thunderstorm WarningPHIBucks, Chester, Montgomery32 min
Apr 15, 3:39 AM EDTSevere Thunderstorm WarningPHIBucks, Philadelphia37 min
Apr 15, 3:59 AM EDTAreal Flood AdvisoryPHIMontgomery4 hr
Apr 15, 3:07 AM EDTSevere Thunderstorm WarningPHIKent, New Castle, Sussex38 min
Apr 15, 3:21 AM EDTTornado WarningPHIKent24 min
Apr 15, 3:28 AM EDTSevere Thunderstorm WarningPHISussex47 min
Apr 15, 3:31 AM EDTTornado WarningPHISussex29 min
Apr 15, 3:36 AM EDTTornado WarningPHIKent, Sussex24 min
Apr 15, 3:41 AM EDTSevere Thunderstorm WarningPHIKent, Sussex64 min
Apr 15, 4:19 AM EDTSpecial Weather StatementPHISussex26 min
Apr 15, 12:31 AM EDTMarine Dense Fog AdvisoryPHI5 hr
Apr 15, 2:47 AM EDTSpecial Marine WarningPHI58 min
Apr 15, 3:00 AM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Apr 15, 3:08 AM EDTSpecial Marine WarningPHI67 min
Apr 15, 3:42 AM EDTSpecial Marine WarningPHI63 min
Apr 15, 3:57 AM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset13 min
Apr 15, 4:16 AM EDTSpecial Marine WarningPHI59 min
Apr 15, 4:40 AM EDTSpecial Marine WarningPHI65 min
Apr 15, 4:47 AM EDTSpecial Weather StatementPHIAtlantic28 min
Apr 15, 5:07 AM EDTSpecial Marine WarningPHI53 min
Apr 15, 5:30 AM EDTCoastal Flood StatementPHIOcean7 hr
Apr 15, 6:59 AM EDTAreal Flood WarningPHIHunterdon4 hr

Nearby

Tornado Warnings in New Jersey, 2019Tornado Warnings in Pennsylvania, 2019Tornado Warnings in Delaware, 2019Every tornado warning in 2019Tornadoes in 2019

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.