Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 37, NWS Philadelphia/Mount Holly

May 19, 20197 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 19, 2019, 10:27 PM EDT for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 48 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
May 19, 2019, 10:27 PM EDT (02:27 UTC)
Expired
May 19, 2019, 11:15 PM EDT
In force
48 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 02:27 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
May 19, 2:36 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.5 hours before the alert went out and 134 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, Brookhaven, NY at 00:00Z on 2019-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 61 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, Brookhaven, NY at 00:00Z on 2019-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.193958Sfc1 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
61 J/kg
Mixed-layer CIN
-284 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

668 
WUUS51 KPHI 200227
SVRPHI
NJC019-021-023-025-027-029-035-PAC017-200330-
/O.NEW.KPHI.SV.W.0037.190520T0227Z-190520T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1027 PM EDT Sun May 19 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northern Ocean County in southern New Jersey...
  Southern Morris County in northern New Jersey...
  Eastern Hunterdon County in northwestern New Jersey...
  Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...

* Until 1130 PM EDT.

* At 1025 PM EDT, thunderstorms...some of them possibly severe, were 
  moving through far eastern Bucks County in Pennsylvania and 
  Hunterdon County in western New Jersey. These thunderstorms were 
  moving east at 45 MPH and will be moving through New Jersey 
  through the late evening hours. 

  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...
  Toms River, Trenton, New Brunswick, Perth Amboy, Long Branch,
  Morristown, Asbury Park, Somerville, Sandy Hook, Somerset, Edison,
  Lakewood, Middletown, Old Bridge, Jackson, Howell, East Brunswick,
  Bridgewater, South Brunswick and Sayreville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In addition to large hail and damaging winds, frequent cloud to 
ground lightning is occurring with these storms. Move indoors 
immediately. Remember, if you can hear thunder, you are close enough 
to be struck by lightning.

&&

LAT...LON 4007 7404 4006 7412 4004 7405 4003 7405
      4006 7454 4019 7470 4013 7477 4020 7502
      4089 7479 4092 7474 4084 7433 4067 7446
      4065 7440 4060 7446 4060 7421 4047 7427
      4042 7401 4048 7401 4047 7399 4044 7398
TIME...MOT...LOC 0225Z 282DEG 39KT 4031 7478 

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

JJM
2 follow-up statements
655 
WWUS51 KPHI 200305
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1105 PM EDT Sun May 19 2019

NJC019-021-027-029-PAC017-200314-
/O.CAN.KPHI.SV.W.0037.000000T0000Z-190520T0330Z/
Ocean NJ-Morris NJ-Hunterdon NJ-Mercer NJ-Bucks PA-
1105 PM EDT Sun May 19 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OCEAN...SOUTHERN
MORRIS...EASTERN HUNTERDON...MERCER AND SOUTHEASTERN BUCKS COUNTIES
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4055 7425 4050 7426 4050 7428 4045 7423
      4036 7426 4043 7460 4051 7477 4058 7471
      4068 7453 4065 7452 4067 7446 4065 7441
      4060 7446 4060 7421
TIME...MOT...LOC 0304Z 274DEG 39KT 4065 7416 4045 7430 

$$

NJC023-025-035-200330-
/O.CON.KPHI.SV.W.0037.000000T0000Z-190520T0330Z/
Somerset NJ-Monmouth NJ-Middlesex NJ-
1105 PM EDT Sun May 19 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR CENTRAL SOMERSET...NORTH CENTRAL MONMOUTH AND MIDDLESEX
COUNTIES...

At 1104 PM EDT, severe thunderstorms were located along a line
extending from Port Richmond to Sayreville, moving east at 45 mph.

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

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old Bridge,
East Brunswick, Bridgewater, Sayreville, North Brunswick, Carteret,
Middlesex, Bound Brook, Manville, Matawan, Millstone, Flagtown,
Colonia, Brownville and Belle Mead.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4055 7425 4050 7426 4050 7428 4045 7423
      4036 7426 4043 7460 4051 7477 4058 7471
      4068 7453 4065 7452 4067 7446 4065 7441
      4060 7446 4060 7421
TIME...MOT...LOC 0304Z 274DEG 39KT 4065 7416 4045 7430 

HAIL...0.75IN
WIND...60MPH
 
$$

Staarmann
517 
WWUS51 KPHI 200315
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1115 PM EDT Sun May 19 2019

NJC023-025-035-200325-
/O.CAN.KPHI.SV.W.0037.000000T0000Z-190520T0330Z/
Somerset NJ-Monmouth NJ-Middlesex NJ-
1115 PM EDT Sun May 19 2019

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SOMERSET...NORTH
CENTRAL MONMOUTH AND MIDDLESEX COUNTIES IS CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4055 7425 4050 7426 4050 7428 4045 7423
      4036 7426 4043 7460 4051 7477 4058 7471
      4068 7453 4065 7452 4067 7446 4065 7441
      4060 7446 4060 7421
TIME...MOT...LOC 0308Z 282DEG 39KT 4064 7410 4044 7424 

$$

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 9:46 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Morris, Somerset, Warren44 min
May 19, 10:34 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more3 hr
May 19, 11:41 PM EDTSevere Thunderstorm WarningPHIWarren53 min
May 20, 1:03 AM EDTSpecial Weather StatementPHIMorris, Warren57 min
May 19, 8:14 PM EDTSpecial Weather StatementPHILehigh46 min
May 19, 8:35 PM EDTTornado WarningPHIBerks25 min
May 19, 8:37 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh, Montgomery38 min
May 19, 8:43 PM EDTFlash Flood WarningPHIBerks3 hr
May 19, 9:09 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton51 min
May 19, 9:29 PM EDTFlash Flood WarningPHIBerks, Bucks, Lehigh, Montgomery, Northampton4 hr
May 19, 10:48 PM EDTFlash Flood WarningPHIBerks117 min
May 19, 11:00 PM EDTSevere Thunderstorm WarningPHIBerks, Carbon, Lehigh, Monroe, Northampton60 min
May 19, 11:15 PM EDTFlash Flood WarningPHICarbon, Lehigh, Monroe, Northampton3 hr
May 19, 11:54 PM EDTSevere Thunderstorm WarningPHILehigh, Northampton39 min
May 20, 12:57 AM EDTAreal Flood AdvisoryPHIBerks3 hr
May 20, 1:21 AM EDTAreal Flood AdvisoryPHIBerks, Montgomery3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019Severe Thunderstorm Warnings in Pennsylvania, 2019Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.