Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 75, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 30, 2011, 5:11 AM EDT for 5 counties in New Jersey; 5 counties in Pennsylvania. It was in force for 64 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 30, 2011, 5:11 AM EDT (09:11 UTC)
- Expired
- May 30, 2011, 6:15 AM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 09:11 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 9.2 hours before the alert went out and 191 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
- 264 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
900
WUUS51 KPHI 300911
SVRPHI
NJC019-027-035-037-041-PAC017-025-077-089-095-301015-
/O.NEW.KPHI.SV.W.0075.110530T0911Z-110530T1015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
511 AM EDT MON MAY 30 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF ALLENTOWN...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF EASTON...
SOUTHEASTERN CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
SOUTH CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
MORRIS COUNTY IN NORTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF MORRISTOWN...
NORTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF SOMERVILLE...
HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
SOUTH CENTRAL SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
WARREN COUNTY IN NORTHWEST NEW JERSEY...
NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 615 AM EDT
* AT 507 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM COLUMBIA TO WIND GAP TO SLATINGTON TO WANAMAKERS TO 14
MILES NORTHWEST OF WANAMAKERS...AND MOVING SOUTHEAST AT 40 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
NEFFS...SCHNECKSVILLE...BELFAST AND BATH AROUND 515 AM EDT...
HOPE...PERKASIE...COFFEETOWN AND TATAMY AROUND 520 AM EDT...
WANAMAKERS AND FORKS AROUND 525 AM 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 4089 7433 4054 7456 4044 7482 4034 7525
4037 7537 4051 7564 4068 7590 4073 7579
4077 7576 4085 7543 4097 7513 4094 7427
TIME...MOT...LOC 0910Z 304DEG 35KT 4092 7512 4080 7532
4073 7559 4068 7582 4079 7600
$$
HAYES4 follow-up statements
286
WWUS51 KPHI 300933
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
533 AM EDT MON MAY 30 2011
NJC019-027-035-037-041-PAC017-025-077-089-095-301015-
/O.CON.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
SUSSEX NJ-WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-LEHIGH PA-
NORTHAMPTON PA-CARBON PA-BUCKS PA-MONROE PA-
533 AM EDT MON MAY 30 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR SOUTH CENTRAL MONROE...NORTHWESTERN BUCKS...SOUTHEASTERN
CARBON...NORTHAMPTON...LEHIGH...NORTHERN SOMERSET...HUNTERDON...
MORRIS...WARREN AND SOUTH CENTRAL SUSSEX COUNTIES...
AT 529 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM STANHOPE TO CALIFON TO ALPHA TO RIEGELSVILLE TO
BETHLEHEM TO CLAUSSVILLE TO NEW TRIPOLI...MOVING SOUTHEAST AT 40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
MOUNT ARLINGTON...WHARTON...SPRINGTOWN AND CLAUSSVILLE BY 540 AM
EDT...
VICTORY GARDENS...DOVER...COFFEETOWN AND PLEASANT VALLEY BY 545 AM
EDT...
ANCIENT OAKS AND ALBURTIS BY 550 AM EDT...
LAT...LON 4089 7433 4054 7456 4044 7482 4034 7525
4037 7537 4051 7564 4068 7590 4073 7579
4077 7576 4085 7543 4097 7513 4094 7427
TIME...MOT...LOC 0933Z 304DEG 35KT 4090 7472 4074 7485
4067 7508 4060 7517 4060 7534 4055 7558
4067 7576
$$
HAYES165
WWUS51 KPHI 300955
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 AM EDT MON MAY 30 2011
PAC025-089-301004-
/O.CAN.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
CARBON PA-MONROE PA-
555 AM EDT MON MAY 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MONROE AND
SOUTHEASTERN CARBON COUNTIES IS CANCELLED...
THE STORMS THAT PROMPTED THE WARNING HAVE EXITED THE AREA.
LAT...LON 4089 7433 4055 7456 4044 7483 4034 7526
4037 7537 4050 7559 4063 7551 4097 7507
4094 7427
TIME...MOT...LOC 0954Z 304DEG 35KT 4078 7450 4062 7463
4055 7486 4048 7495 4048 7512 4044 7536
4056 7554
$$
NJC019-027-035-037-041-PAC017-077-095-301015-
/O.CON.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
SUSSEX NJ-WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-LEHIGH PA-
NORTHAMPTON PA-BUCKS PA-
555 AM EDT MON MAY 30 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR NORTHWESTERN BUCKS...NORTHAMPTON...SOUTHEASTERN LEHIGH...NORTHERN
SOMERSET...HUNTERDON...MORRIS...WARREN AND SOUTH CENTRAL SUSSEX
COUNTIES...
AT 550 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM MORRISTOWN TO BRIDGEWATER TO
CLINTON TO FRENCHTOWN TO REVERE TO TRUMBAUERSVILLE TO
MACUNGIE...MOVING SOUTHEAST AT 40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
MADISON...ZIONSVILLE...BEDMINSTER AND PIPERSVILLE BY 600 AM EDT...
COOPERSBURG...LUMBERVILLE...FLAGTOWN AND CLOVERHILL BY 605 AM
EDT...
TRUMBAUERSVILLE AND STOCKTON BY 610 AM EDT...
LAT...LON 4089 7433 4055 7456 4044 7483 4034 7526
4037 7537 4050 7559 4063 7551 4097 7507
4094 7427
TIME...MOT...LOC 0954Z 304DEG 35KT 4078 7450 4062 7463
4055 7486 4048 7495 4048 7512 4044 7536
4056 7554
$$
HAYES474
WWUS51 KPHI 301005
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
605 AM EDT MON MAY 30 2011
NJC037-041-PAC077-095-301015-
/O.CAN.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
SUSSEX NJ-WARREN NJ-LEHIGH PA-NORTHAMPTON PA-
605 AM EDT MON MAY 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHAMPTON...SOUTHEASTERN
LEHIGH...WARREN AND SOUTH CENTRAL SUSSEX COUNTIES IS CANCELLED...
THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND MOVED OUT OF
THE AREA.
LAT...LON 4089 7433 4055 7456 4044 7483 4034 7526
4037 7537 4053 7524 4066 7482 4095 7443
4094 7427
TIME...MOT...LOC 1005Z 304DEG 35KT 4072 7438 4056 7451
4049 7474 4042 7483 4038 7501 4032 7525
4050 7542
$$
NJC019-027-035-PAC017-301015-
/O.CON.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-BUCKS PA-
605 AM EDT MON MAY 30 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR CENTRAL BUCKS...NORTHERN SOMERSET...CENTRAL HUNTERDON AND EASTERN
MORRIS COUNTIES...
AT 603 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF MORRISTOWN
TO MARTINSVILLE TO CLOVERHILL TO SAND BROOK TO LUMBERVILLE TO
SILVERDALE TO 13 MILES NORTHWEST OF PERKASIE...MOVING SOUTHEAST AT
40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
DUBLIN BY 615 AM EDT...
LAT...LON 4089 7433 4055 7456 4044 7483 4034 7526
4037 7537 4053 7524 4066 7482 4095 7443
4094 7427
TIME...MOT...LOC 1005Z 304DEG 35KT 4072 7438 4056 7451
4049 7474 4042 7483 4038 7501 4032 7525
4050 7542
$$
HAYES839
WWUS51 KPHI 301013
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
613 AM EDT MON MAY 30 2011
NJC019-027-035-PAC017-301023-
/O.EXP.KPHI.SV.W.0075.000000T0000Z-110530T1015Z/
MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-BUCKS PA-
613 AM EDT MON MAY 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BUCKS...NORTHERN
SOMERSET...HUNTERDON AND EASTERN MORRIS COUNTIES WILL EXPIRE AT 615
AM EDT...
THE STORMS THAT PROMPTED THE WARNING HAVE EXITED THE AREA.
LAT...LON 4089 7433 4055 7456 4044 7483 4034 7526
4037 7537 4053 7524 4066 7482 4095 7443
4094 7427
TIME...MOT...LOC 1013Z 304DEG 35KT 4067 7429 4051 7443
4044 7466 4037 7475 4034 7493 4028 7517
4046 7534
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 4:39 AM EDT | Special Weather Statement | PHI | Warren | 66 min |
| May 30, 4:54 AM EDT | Special Weather Statement | PHI | Morris, Sussex | 66 min |
| May 30, 4:59 AM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 61 min |
| May 30, 6:04 AM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth, Somerset | 56 min |
| May 30, 6:26 AM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth | 64 min |
| May 30, 6:39 AM EDT | Special Weather Statement | PHI | Ocean | 66 min |
| May 30, 7:38 AM EDT | Special Weather Statement | PHI | Ocean | 22 min |
| May 30, 3:11 AM EDT | Special Weather Statement | PHI | Carbon, Monroe | 64 min |
| May 30, 3:50 AM EDT | Special Weather Statement | PHI | Carbon, Monroe | 55 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011
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.