Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 74, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 30, 2011, 4:59 AM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 61 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, 4:59 AM EDT (08:59 UTC)
- Expired
- May 30, 2011, 6:00 AM EDT
- In force
- 61 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 130 km from the middle of the area, began a volume at 09:02 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, 9.0 hours before the alert went out and 152 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.
591
WUUS51 KPHI 300859
SVRPHI
NJC027-037-041-301000-
/O.NEW.KPHI.SV.W.0074.110530T0859Z-110530T1000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
459 AM EDT MON MAY 30 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
THIS INCLUDES THE CITY OF NEWTON...
NORTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 600 AM EDT
* AT 454 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 15 MILES NORTHWEST OF HIGH POINT TO HAINESVILLE TO
FLATBROOKVILLE TO BLAIRSTOWN...AND MOVING EAST AT 40 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
HIGH POINT...FIVE POINTS AND CRANDON LAKES AROUND 505 AM EDT...
BRANCHVILLE AROUND 510 AM EDT...
SUSSEX AND NEWTON AROUND 515 AM EDT...
ANDOVER AROUND 520 AM EDT...
VERNON VALLEY...OGDENSBURG AND LAKE MOHAWK 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 4120 7437 4109 7449 4104 7449 4105 7444
4102 7442 4101 7432 4097 7427 4095 7428
4096 7513 4099 7514 4107 7497 4108 7499
4115 7491 4127 7484 4132 7479 4135 7470
TIME...MOT...LOC 0859Z 270DEG 35KT 4151 7475 4132 7473
4123 7481 4115 7488 4102 7500
$$
HAYES2 follow-up statements
669
WWUS51 KPHI 300920
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
520 AM EDT MON MAY 30 2011
NJC027-037-041-301000-
/O.CON.KPHI.SV.W.0074.000000T0000Z-110530T1000Z/
SUSSEX NJ-WARREN NJ-MORRIS NJ-
520 AM EDT MON MAY 30 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 AM EDT
FOR NORTHEASTERN MORRIS...NORTHERN WARREN AND SUSSEX COUNTIES...
AT 516 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 15 MILES NORTHEAST OF HIGH POINT TO 6 MILES NORTH OF
VERNON VALLEY TO SUSSEX TO ANDOVER...OR ALONG A LINE EXTENDING FROM
20 MILES NORTHEAST OF MONTAGUE TO 15 MILES EAST OF MONTAGUE TO 10
MILES EAST OF MONTAGUE TO 9 MILES NORTHEAST OF NEWTON TO 7 MILES
SOUTHWEST OF NEWTON...MOVING EAST AT 40 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
VERNON VALLEY...LAKE MOHAWK...HAMBURG AND FRANKLIN BY 525 AM EDT...
OGDENSBURG...HOPATCONG AND HIGHLAND LAKE BY 530 AM EDT...
GREEN POND AND LAKE TELEMARK BY 540 AM EDT...
KINNELON BY 550 AM EDT...
LAT...LON 4121 7439 4120 7437 4116 7440 4108 7449
4104 7449 4105 7444 4102 7442 4101 7432
4095 7428 4096 7513 4099 7513 4106 7498
4109 7498 4115 7491 4127 7484 4132 7479
4135 7470
TIME...MOT...LOC 0920Z 270DEG 35KT 4151 7448 4132 7446
4127 7455 4117 7462 4097 7477
$$
HAYES947
WWUS51 KPHI 300955 RRA
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 AM EDT MON MAY 30 2011
NJC027-037-041-301005-
/O.EXP.KPHI.SV.W.0074.000000T0000Z-110530T1000Z/
SUSSEX NJ-WARREN NJ-MORRIS NJ-
555 AM EDT MON MAY 30 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS...NORTHERN
WARREN AND SUSSEX COUNTIES WILL EXPIRE AT 600 AM EDT...
THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND EXITED THE
REGION.
LAT...LON 4121 7439 4120 7437 4116 7440 4108 7449
4104 7449 4105 7444 4102 7442 4101 7432
4095 7428 4096 7513 4099 7513 4106 7498
4109 7498 4115 7491 4127 7484 4132 7479
4135 7470
TIME...MOT...LOC 0955Z 270DEG 35KT 4151 7402 4132 7401
4127 7410 4117 7417 4097 7432
$$
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, 5:11 AM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 64 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 |
Nearby
Severe Thunderstorm Warnings in New Jersey, 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.