Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 94, NWS Philadelphia/Mount Holly

May 29, 20194 counties in New Jersey; 7 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 29, 2019, 5:23 PM EDT for 4 counties in New Jersey; 7 counties in Pennsylvania. It was in force for 34 min. 13 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: May 29, 2019, 5:23 PM EDT (21:23 UTC)
Expired: May 29, 2019, 5:57 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 21:24 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

Time	Report	Where	Remark
May 29, 5:24 PM EDT	TSTM WND DMG	1 Nnw Shillington, PA	DELAYED REPORT OF TREES DOWN ON MUSEUM ROAD BETWEEN LANCASTER AVENUE AND OLD MILL ROAD. TIME ESTIMATED FROM RADAR.
May 29, 5:25 PM EDT	TSTM WND DMG	2 Sse Zionsville, PA	TREE DOWN ONTO WIRES. TIME ESTIMATED FROM RADAR.
May 29, 5:33 PM EDT	TSTM WND DMG	1 Nw Blairstown Twp, NJ	WIRES/TREE DOWN ON THE ROADS.
May 29, 5:34 PM EDT	TSTM WND DMG	2 Ene Robeson Twp, PA	DELAYED REPORT OF DOWNED TREE BLOCKING THE ROADWAY ON CEDAR HILL ROAD NORTH OF COCALICO ROAD. TIME ESTIMATED FROM RADAR.
May 29, 5:35 PM EDT	TSTM WND DMG	2 Sse Marlborough Twp, PA	PHOTO OF A LARGE TREE SNAPPED NEAR THE BASE.
May 29, 5:35 PM EDT	TSTM WND DMG	Boyertown, PA	TREES REPORTED DOWN IN BOYERTOWN. TIME ESTIMATED FROM RADAR.
May 29, 5:38 PM EDT	TSTM WND DMG	Harleysville, PA	MULTIPLE TREES REPORTED DOWN AT THE LANDIS PARKING LOT IN HARLEYSVILLE. TIME ESTIMATED FROM RADAR.
May 29, 5:39 PM EDT	TSTM WND DMG	1 Wsw Stowe, PA	DELAYED REPORT. DOWNED TREE ON ROUTE 724 NEAR THE CHESTER COUNTY LINE. TIME ESTIMATED FROM RADAR.
May 29, 5:40 PM EDT	HAIL 0.25	1 N Colebrookdale Twp, PA
May 29, 5:42 PM EDT	TSTM WND DMG	Vernfield, PA	TREES SNAPPED AND SOME UPROOTED, SHINGLES TORN OFF, BARN ABOUT 1/2 MILE AWAY WAS BLOWN DOWN. ALSO REPORTED HAIL THE SIZE OF NICKELS. TIME ESTIMATED FROM RADAR.
May 29, 5:45 PM EDT	TSTM WND DMG	Sellersville, PA	MULTIPLE TREES DOWN WITH POWER OUTAGES. TIME ESTIMATED FROM RADAR.
May 29, 5:50 PM EDT	TSTM WND DMG	Lower Frederick Twp, PA	HOME REPORTED DAMAGED ON WALNUT LN WITH RESIDENT NEEDING ASSISTANCE TO BE EXTRACTED. TIME ESTIMATED FROM RADAR.
May 29, 5:50 PM EDT	HAIL 1	Richland Twp, PA

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.

Issued	Product	Office	Lasted
May 29, 1:10 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.4 hours before the alert went out and 199 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 415 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -157 m²/s²
0-3 km storm-relative helicity: -76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

103 
WUUS51 KPHI 292123
SVRPHI
NJC019-027-037-041-PAC011-017-029-077-089-091-095-292215-
/O.NEW.KPHI.SV.W.0094.190529T2123Z-190529T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
523 PM EDT Wed May 29 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Western Morris County in northern New Jersey...
  Northern Hunterdon County in northwestern New Jersey...
  Southwestern Sussex County in northwestern New Jersey...
  Warren County in northwestern New Jersey...
  Berks County in eastern Pennsylvania...
  Northwestern Montgomery County in southeastern Pennsylvania...
  Lehigh County in eastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...
  North central Chester County in southeastern Pennsylvania...
  Southeastern Monroe County in northeastern Pennsylvania...
  Northampton County in eastern Pennsylvania...

* Until 615 PM EDT.

* At 522 PM EDT, severe thunderstorms were located along a line
  extending from near Greendell to near Birdsboro, moving east at 90
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  Allentown, Reading, Easton, Newton, Bethlehem, Pottstown,
  Phoenixville, Hopatcong, Forks, Emmaus, Wyomissing, Northampton,
  East Stroudsburg, Hackettstown, Quakertown, Perkasie, Wilson,
  Souderton, Bedminster and Wharton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 800 PM EDT for northwestern
New Jersey...and eastern, southeastern and northeastern Pennsylvania.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4109 7504 4109 7500 4114 7492 4103 7448
      4067 7479 4004 7567 4017 7593 4035 7619
TIME...MOT...LOC 2122Z 264DEG 80KT 4102 7482 4032 7576 

HAIL...1.00IN
WIND...60MPH
 
$$

NC

2 follow-up statements

121 
WWUS51 KPHI 292144
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
544 PM EDT Wed May 29 2019

NJC019-027-037-041-PAC089-292154-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-190529T2215Z/
Morris NJ-Hunterdon NJ-Sussex NJ-Warren NJ-Monroe PA-
544 PM EDT Wed May 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN MORRIS...NORTHERN
HUNTERDON...SOUTHWESTERN SUSSEX...WARREN AND SOUTHEASTERN MONROE
COUNTIES IS CANCELLED...

The storms which prompted the warning have weakened.  Therefore, the 
warning has been cancelled.

A tornado watch remains in effect until 800 PM EDT for northwestern
New Jersey...and eastern and southeastern Pennsylvania.

LAT...LON 4068 7561 4049 7506 4004 7567 4017 7593
      4035 7619
TIME...MOT...LOC 2144Z 264DEG 80KT 4106 7422 4037 7516 

$$

PAC011-017-029-077-091-095-292215-
/O.CON.KPHI.SV.W.0094.000000T0000Z-190529T2215Z/
Berks PA-Montgomery PA-Lehigh PA-Bucks PA-Chester PA-Northampton PA-
544 PM EDT Wed May 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR BERKS...NORTHWESTERN MONTGOMERY...SOUTHEASTERN LEHIGH...
NORTHWESTERN BUCKS...NORTH CENTRAL CHESTER AND SOUTH CENTRAL
NORTHAMPTON COUNTIES...

At 544 PM EDT, severe thunderstorms were located along a line
extending from near Ramsey to Robesonia, moving east at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Allentown, Reading, Bethlehem, Pottstown, Phoenixville, Emmaus,
Wyomissing, Quakertown, Perkasie, Souderton, Bedminster, Hellertown,
Birdsboro, Collegeville, Kutztown, Royersford, Fleetwood, Sinking
Spring, Laureldale and Trappe.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 800 PM EDT for northwestern
New Jersey...and eastern and southeastern Pennsylvania.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4068 7561 4049 7506 4004 7567 4017 7593
      4035 7619
TIME...MOT...LOC 2144Z 264DEG 80KT 4106 7422 4037 7516 

HAIL...1.00IN
WIND...60MPH
 
$$

NC

080 
WWUS51 KPHI 292157
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
557 PM EDT Wed May 29 2019

PAC011-017-029-077-091-095-292206-
/O.CAN.KPHI.SV.W.0094.000000T0000Z-190529T2215Z/
Berks PA-Montgomery PA-Lehigh PA-Bucks PA-Chester PA-Northampton PA-
557 PM EDT Wed May 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR BERKS...NORTHWESTERN
MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS...NORTH CENTRAL
CHESTER AND SOUTH CENTRAL NORTHAMPTON COUNTIES IS CANCELLED...
    
The storms which prompted the warning have been moving out of the 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 800 PM EDT for northwestern
New Jersey...and eastern and southeastern Pennsylvania.

LAT...LON 4068 7561 4049 7506 4004 7567 4017 7593
      4035 7619
TIME...MOT...LOC 2155Z 264DEG 80KT 4108 7389 4040 7483 

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 8:23 PM EDT	Tornado Warning	PHI	Warren	37 min
May 28, 8:30 PM EDT	Tornado Warning	PHI	Morris, Sussex	30 min
May 28, 8:34 PM EDT	Special Marine Warning	PHI		41 min
May 28, 8:35 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	55 min
May 28, 8:37 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	25 min
May 28, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset, Sussex, Warren	61 min
May 28, 8:50 PM EDT	Areal Flood Advisory	PHI	Cape May	78 min
May 28, 8:59 PM EDT	Special Marine Warning	PHI		61 min
May 28, 9:33 PM EDT	Areal Flood Advisory	PHI	Morris, Somerset	63 min
May 28, 9:47 PM EDT	Special Marine Warning	PHI		43 min
May 28, 9:52 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	23 min
May 28, 9:57 PM EDT	Special Marine Warning	PHI		44 min
May 28, 10:03 PM EDT	Special Weather Statement	PHI	Atlantic	12 min
May 28, 10:28 PM EDT	Special Marine Warning	PHI		58 min
May 28, 10:30 PM EDT	Special Weather Statement	PHI	Ocean	45 min
May 28, 10:33 PM EDT	Special Weather Statement	PHI	Burlington	27 min
May 28, 10:34 PM EDT	Special Weather Statement	PHI	Monmouth	26 min
May 28, 11:00 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	30 min
May 28, 11:07 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	38 min
May 28, 11:21 PM EDT	Special Marine Warning	PHI		39 min
May 28, 11:35 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	25 min
May 28, 11:57 PM EDT	Special Marine Warning	PHI		48 min
May 29, 3:18 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 7 more	18 hr
May 29, 3:10 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	65 min
May 29, 3:38 PM EDT	Tornado Warning	PHI	Hunterdon	37 min
May 29, 3:43 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	4 hr
May 29, 3:43 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	47 min
May 29, 4:04 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	41 min
May 29, 4:09 PM EDT	Severe Thunderstorm Warning	PHI	Warren	51 min
May 29, 4:13 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	47 min
May 29, 4:16 PM EDT	Severe Thunderstorm Warning	PHI	Warren	27 min
May 29, 4:27 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	51 min
May 29, 4:28 PM EDT	Special Weather Statement	PHI	Morris	32 min
May 29, 4:35 PM EDT	Special Weather Statement	PHI	Sussex	25 min
May 29, 4:37 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Ocean	53 min
May 29, 4:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	67 min
May 29, 5:01 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris	29 min
May 29, 5:03 PM EDT	Special Marine Warning	PHI		57 min
May 29, 5:14 PM EDT	Flash Flood Warning	PHI	Hunterdon, Morris, Sussex, Warren	3 hr
May 29, 5:27 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	4 hr
May 29, 5:33 PM EDT	Tornado Warning	PHI	Burlington, Mercer, Monmouth	27 min
May 29, 5:39 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more	66 min
May 29, 5:45 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Sussex, Warren	30 min
May 29, 6:01 PM EDT	Special Marine Warning	PHI		59 min
May 29, 6:02 PM EDT	Special Weather Statement	PHI	Salem	28 min
May 29, 6:06 PM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	4 hr
May 29, 6:06 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	24 min
May 29, 6:29 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	61 min
May 29, 6:35 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester, Ocean	3 hr
May 29, 6:35 PM EDT	Special Marine Warning	PHI		55 min
May 29, 7:08 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cumberland, Gloucester, Salem	52 min
May 29, 7:12 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more	3 hr
May 29, 7:15 PM EDT	Special Marine Warning	PHI		60 min
May 29, 7:25 PM EDT	Special Marine Warning	PHI		65 min
May 29, 7:33 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	42 min
May 29, 7:35 PM EDT	Special Marine Warning	PHI		85 min
May 28, 9:17 PM EDT	River Flood Warning	PHI	Chester	101 min
May 29, 2:19 PM EDT	Special Weather Statement	PHI	Lehigh	41 min
May 29, 2:26 PM EDT	Special Weather Statement	PHI	Montgomery	34 min
May 29, 2:30 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	60 min
May 29, 2:48 PM EDT	Special Weather Statement	PHI	Monroe	27 min
May 29, 2:59 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	46 min
May 29, 3:17 PM EDT	Tornado Warning	PHI	Bucks, Lehigh	28 min
May 29, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe, Northampton	46 min
May 29, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	46 min
May 29, 3:43 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	62 min
May 29, 4:18 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	42 min
May 29, 4:42 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	48 min
May 29, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Chester, Lehigh, Montgomery, Northampton	40 min
May 29, 4:55 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	4 hr
May 29, 5:08 PM EDT	Tornado Warning	PHI	Bucks, Montgomery	27 min
May 29, 5:49 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery, Philadelphia	41 min
May 29, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	53 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Severe Thunderstorm Warnings in New Jersey, 2019 Every severe thunderstorm warning 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.