Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 130, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 16, 2010, 4:31 PM EDT for 5 counties in New Jersey. It was in force for 59 min. 4 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
- Aug 16, 2010, 4:31 PM EDT (20:31 UTC)
- Expired
- Aug 16, 2010, 5:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 47 km from the middle of the area, began a volume at 20:34 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 |
|---|---|---|---|
| Aug 16, 4:40 PM EDT | TSTM WND DMG | 3 Nw Princeton Junction, NJ | NUMEROUS TREES DOWN IN PRINCETON. |
| Aug 16, 4:55 PM EDT | TSTM WND DMG | 3 Ene Princeton Junctio, NJ | NUMEROUS TREES DOWN IN PLAINSBORO. |
| Aug 16, 5:05 PM EDT | TSTM WND DMG | 3 W Concordia, NJ | LARGE TREE LIMBS DOWN IN CRANBURY TOWNSHIP. |
| Aug 16, 5:25 PM EDT | TSTM WND DMG | 2 Sse Concordia, NJ | LARGE TREE LIMBS DOWN AND PENNY SIZE HAIL REPORTED IN MONROE TOWNSHIP. |
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 |
|---|---|---|---|
| Aug 16, 12:05 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.5 hours before the alert went out and 146 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.
- Mixed-layer CAPE
- 82 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 548 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 229 m²/s²
- 0-3 km storm-relative helicity
- 242 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
817 WUUS51 KPHI 162031 SVRPHI NJC019-021-023-025-035-162130- /O.NEW.KPHI.SV.W.0130.100816T2031Z-100816T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 431 PM EDT MON AUG 16 2010 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN MERCER COUNTY IN CENTRAL NEW JERSEY... WESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY... SOUTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY... SOUTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY... SOUTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY... * UNTIL 530 PM EDT * AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HOPEWELL...OR 11 MILES NORTH OF TRENTON...AND MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PRINCETON AND ROCKY HILL AROUND 445 PM EDT... KENDALL PARK AROUND 500 PM EDT... SOUTH BRUNSWICK AROUND 505 PM EDT... DAYTON AROUND 510 PM EDT... JAMESBURG AND CLEARBROOK PARK AROUND 520 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES GREATEST KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 4044 7419 4017 7426 4031 7487 4049 7483 TIME...MOT...LOC 2031Z 281DEG 16KT 4038 7473 $$ PO
1 follow-up statement
106
WWUS51 KPHI 162108
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
508 PM EDT MON AUG 16 2010
NJC019-021-035-162117-
/O.CAN.KPHI.SV.W.0130.000000T0000Z-100816T2130Z/
HUNTERDON NJ-SOMERSET NJ-MERCER NJ-
508 PM EDT MON AUG 16 2010
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MERCER...SOUTHERN
SOMERSET AND SOUTHEASTERN HUNTERDON COUNTIES IS CANCELLED...
THE SEVERE STORM IS NOW IN SOUTHERN MIDDLESEX COUNTY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT MONDAY
EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4017 7426 4032 7463 4033 7463 4041 7453
4044 7419
TIME...MOT...LOC 2107Z 293DEG 17KT 4031 7451
$$
NJC023-025-162130-
/O.CON.KPHI.SV.W.0130.000000T0000Z-100816T2130Z/
MIDDLESEX NJ-MONMOUTH NJ-
508 PM EDT MON AUG 16 2010
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WESTERN MONMOUTH AND SOUTHERN MIDDLESEX COUNTIES...
AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS
LOCATED NEAR ROSSMOOR...OR 12 MILES SOUTH OF NEW BRUNSWICK...MOVING
SOUTHEAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CLEARBROOK PARK...CONCORDIA...JAMESBURG AND 6 MILES SOUTHWEST OF
HELMETTA BY 515 PM EDT...
8 MILES SOUTHWEST OF SPOTSWOOD BY 520 PM EDT...
MANALAPAN BY 525 PM EDT...
ENGLISHTOWN...YORKETOWN...WEST FREEHOLD AND 6 MILES WEST OF
FREEHOLD BY 530 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4017 7426 4032 7463 4033 7463 4041 7453
4044 7419
TIME...MOT...LOC 2107Z 293DEG 17KT 4031 7451
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 3:03 PM EDT | Special Weather Statement | PHI | Hunterdon | 57 min |
| Aug 16, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon | 27 min |
| Aug 16, 4:27 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex | 63 min |
| Aug 16, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 48 min |
| Aug 16, 5:30 PM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 16, 7:45 PM EDT | Special Weather Statement | PHI | Gloucester, Salem | 60 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2010Every severe thunderstorm warning in 2010
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.